Sea level gas separator of oil well effluent with incorporated emergency measures upon a well blow-out

Abstract

A modular Sea Level Gas Separator of Oil Well Effluent (SLGOE) unit is devised to prevent damage to the riser/conductor, as well as precluding the gas entrainment reaching the rig, upon a well blow-out. The effluent, after a blow-out, is let into gas-separator tank of the unit, entering as a down-flow, whereby instantaneous separation of the gases is effectuated. Massively clustered top outlets let off the rising gases to a distant destination. An immensely pressured gas entrainment is attenuated by enormous receptive volume of the multiple upstream outlets of the tanks, the containing volume and pressure of a gas being inversely proportional. The gas entrainment is further precluded to entrain into the down-streaming oil of the tanks, reaching a different destination. When the drilling conductor is breached, an oil separator tank separates the oil from admixed water, whereby the pollution of oceanic water is also precluded.

Claims

1. A preferred prototype model of a Sea Level Gas Separator of Oil Well Effluent' (SLGOE) unit, structured in a rig vicinity about the oceanic surface, wherein the unit and its accessories are devised to prevent a damage to the structures deployed within a margine riser, as also they prevent a giant entrainment of inflammable gases entereing the rig upon a failure of the BOP, the SLGOE unit embodying the means and methods as set forth below- (a) the SLGOE unit incorporating a gas separator tank, and an oil passage' tank, the tanks arranged in a stepwise manner within a modular, so as to facilitate an effluent flow from the gas separator tank to a lower level oil passage tank, by forces of gravity, (b) following a blow-out, the effluent from within a marine riser is diverted to an oil diversion tubing terminating as an inlet tube of the gas separator tank of the SLGOE unit, (c) the gas separator tank having said inlet tube entering about its top, for the effluent to be down-flowing to its bottom, (d) the gaseous elements instantly separating from the down-flowing effluent, subject to be collecting about the top of the tank, (e) the gas separator tank having wide gas outlet tubes clustered about the top, to be instantly diverting the gas to gas receptacles positioned away from the rig, the exceeding volume of the gas outlet tubes dissipating exceeding pressure of the gas entrainment, (f) the gas separator tank having an oil-dispersion device, said oil-dispersion device having an oil-dispersion coil positioned nearer to the tank's bottom oil column, (g) the gas separator tank having bottom perforations devised wider than the well's production tubing, for the oil to be flowing to the lower oil passage tank, (h) the oil passage tank having the oil entereing through its top to be down-flowing to its bottom, (i) the oil passage tank having wide gas-outlet-tubes clustered about the top of the tank, said gas-outlet-tubes also reaching the gas receptacles positioned away from the rig, (j) the oil passage tank having a siphoning tube, to be entering the rig as an oil-collection tube, or entering oil collection receptacles in a destination away from the rig, (k) the prototype SLGOE unit is incorporated into the well's oil collection system as two discrete functional models stationed in the rig vicinity, to be functioning as: (i) an Emergency operational SLGOE unit (the EOS unit)wherein the SLGOE unit, connected to the well's marine riser distal to the BOP, is operational upon a well-blow out, separating the gaseous elements and diverting to distant destination; (2) a multi-operational SLGOE unit (the MOS unit)wherein the SLGOE unit is operational at all times, separating the gaseous elements, and diverting to distant destination, as a routine, and upon a well-blow out, (l) as the SLGOE unit is devised to preclude gas entrainment reaching the rig confines upon a well blow out, it is incorporated into the oil collection system when drilling of a down hole is reaching its completion. and amenable for a kick from an oil containment, and as an alternative thereof, the riser strings can be manufactured with the diversion tubing incorporated into its interior walls, to be operative when needed, (m) the tanks of the SLGOE unit are equipped to be having a video monitoring device(s) of solar battery power source, the video device positioned with a lens side down-tilted incline, accessing the tanks about the top through an automated window door, (n) the siphoning principle, being devised as a function exclusively directed to the oil within the oil passage tank, the gas separator tank is completely alienated from such natural drawing force, whereby its gaseous components are not drawn into the down-stream oil collection system, (o) the terminal gas receptacles with provisions for one way outlet valves, let out gases under high pressure threshold, so that back pressure is not built un in the SLGOE units, (p) the SLGOE unit is structured as a SLGOE modular unit capsule of different preconfigured sizes with provisions fora door access, and fire-safe devices of enveloping burlaps, surface sprinklers, water jetting corridors, wind-blowing fans fitted to a scant exoskeleton, and a water-sealed pathway to the rig, (q) wherein there is a breach in the well's drilling conductor with at least partial cessation of the SLGOE functioning, the scheme of effluent diversion further including an oil-separator of the water-admixed effluent tank, subject to separating admixed ocean waters of the effluent, and furthermore preventing the oil polluting oceanic ecosystem.

2. (canceled)

3. the prototype SLGOE unit of claim 1, is configured to be structured as a SLGOE modular unit capsule, said modular capsule made of preconfigured sizes, with provisions as below: (a) the modular capsule, with its provisions for inlet and outlet tubing temporarily capped, is deployed about the ocean surface of the rig vicinity, (b) a stepwise positioning of the multiple tanks of the SLGOE unit is configured within the modular capsule, in a manner that the effluent flows from one tank to another by forces of gravity, (c) the SLGOE modular unit encompassing the gas separator tank, and the oil passage tank, is made of steel, and stationed at a lower horizontal level than the well's diversion tubing, terminating as an inlet tube of the gas separator tank, (d) the modular resists perturbations of the oceanic weathers, its barge-like base structuring resisting any upheavals to stay in an upright positioning, (e) the modular is either erected on a single leg, or anchored to the rig by units of metal wrings below the surface water, the strings anchored to a leg of the rig in a hemi-hammock like arrangement, each metal string made of sturdy metal rods that prevent sideward bending or sinking of the strings, so as to maintain their desired axial length, precluding the modular approaching closer to the rig, (f) the multiple units of the strings fan out towards the modular where they make a grid, with an atop metal board stationing the modular, (g) the strings and the modular are supported by submerged metal/concrete blocks with locked in air columns, the concrete blocks in turn connected to bottom metal strings originating from the leg and radiating upwards, (h) as an alternative thereof, a submerged anchor serves as a base support to the modular wherein: (i) the anchor is affixed to the rig's reinforced leg structure, the anchor's air-locking metal frame obviating strain upon the leg; (ii) the anchor-columns rise in an incline to terminate as a modular, platform made of an air-locking metal block; (iii) the anchor is stabilized by hoisting ropes of metal that perpendicularly course from the leg, a lower of the hoisting ropes substituted by an unit of double metal strings, the metal string made of sturdy metal rods that prevent sideward bending or sinking of the strings; (iv) submerged air-locking metal blocks stabilized by the hoisting ropes underneath the surface water, make a pathway to the rig.

4. The preferred prototype embodiment of the Subsea Level Gas Separator of Oil Well Effluent (SLGOE) unit of claim 1, wherein incorporated into the top of the gas separator tank is an oil disperser unit, exemplified as a spiked coil device made of steel, said oil disperser unit having means and methods as below (a) the oil disperser unit is made up of (i) a dispersion coil device of radially connected concentric circles; (ii) a central supporting vertical rod of the dispersion coil device, the rod fitted to a top structure of the tank, and (iii) a motion control device outside the too of the tank, facilitating axial motion of said central supporting rod, (b) the dispersion coil optionally has a lamp shade like configuration with a minimal incline, (c) the concentric circles of the dispersion coil are connected by two radially positioned members in equidistance, (d) the the dispersion coil is devised to having axial motion downward and upward in pre-configured intervals as a continuum, or as required when an outflow block to the tank is suspected, (e) the concentric circles of the dispersion coil having downward extensions with knife-like cutting edges about the bottom, said cutting edges having spiked projections in strategic places that correspond to the positional configuration of the bottom perforations of the tank, each spike having a diameter optimally smaller than the perforations, (f) in a downward thrust, the spikes of the coil disrupt the blocks to the bottom perforations of the tank, whereas the cutting edges of its circles severe oil globs about the bottom of the tank, (g) the bottom extensions of the circles located nearer to the center are structured longer if a lamp shade configuration is elected, whereby the lower ends of the bottom extensions are in a same horizontal plane, so that all the spikes pass through the bottom perforations of the tank, in the axial downward motion of the device, (h) the lengthy supporting rod of the dispersion device positions the dispersion coil nearer the surface of the bottom oil column, shortening its motion and time to reach the sieved bottom of the tank, (i) the concentric circles of the dispersion coil are sufficiently spaced, whereby the solid components of the effluent may not settle about the spaces, and the separated gaseous elements easily ascend to the top of the tank, (j) the bottom perforations of the tank are structured oblong, to allow easy passage of the solid/semisolid effluent, (k) the axial motion of the supporting rod of the coil device conforms to external controls structured outside the tank, and positioned inside the modular enclosure.

5. The preferred prototype embodiment of the SLGOE unit of claim of 1, wherein the prototype modular SLGOE unit is set forth as: (1) an Emergency operational SLGOE unit (an EOS unit) within the rig vicinity, connected to the well's annulus A and functions to separate the diverted oil-gas effluent, when the production tubing is damaged with or without damage to the well's marine riser; (2) a multi-operational SLGOE unit (a MOS unit), within the rig vicinity, wherein it functions to separate oil-gas effluent on a regular basis and also after a well blow-out, receiving the blown-out effluent from the damaged production tubing, with or without a damage to the well's marine riser, the details of said operations arc as set forth below (1) the EOS unit (a) the drilling conductor and the marine riser are closed from the rig by an air tight closure of any size and configuration, with provisions to undo, said closure located about the rig level, (b) a sturdy production tubing shield envelopes the production tubing up to the rig level serving to protect the deployed structures of the riser upon a blow out; (ii) a wide effluent diversion tube starts in the bottom of the annulus A and rises to a level above the surface water, where it emerges from the riser and the conductor to enter the gas separator tank of the EOS unit about the rig site, (iii) the course of the diversion tube with multiple converging tubules is set forth to adapt to the structural complexity of the riser interior, whereby the deployed structures within the riser are protected from being otherwise blown off by a pressured gas entrainment; (iv) the diversion tube is normally closed by one way outlet valves about its emerging site from the riser, said outlet valves opening upon moderate pressure; (v) the common gas collection tube leaving the EOS unit's modular has similar one way outlet valves opening upon moderate pressure; (vi) the atmospheric air is normally not contained, in the modular the tanks, the gas receptacles, and the tubular system of the EOS unit, after they are evacuated initially to be replaced by oxygen free air, (c) following tubing, effluent enters the production tubing shield (PTS) to then be flowing into the diversion tubing to reach the EOS unit; (ii) Following damage to the PTSwith the rig level closure sealing the riser and the conductor from the rig, the pressured effluent is forced into the diversion tubing to reach the EOS unit, wherein by gaseous separation within the tanks, the gas entrainment is attenuated, with the oil and gas reaching their separate destinations; (iii) following damage to production tubing the effluent finds its way also to the rig level through a partially damaged production tubing, however bypasses the rig flow through the MOS unit, for eliminating its gaseous components to be then returned, (iv) wherein a production tubing is not yet installed, the blown out effluent, whether of single or of admixed element(s), entering only the diversion tubing, (d) following damage to the riser with the well's drilling conductor intact, and the rig level closure sealing the riser and the conductor: (i) the effluent flows into the diversion tubing to reach the EOS unit, wherein by gaseous separation within the tanks, the gas entrainment is attenuated, with the components of oil and gas reaching separate destinations; (ii) the effluent finds its way into a Partially damaged production tubing, however bypasses the rig to flow through the MOS unit, for eliminating its gaseous components to be then returned to the rig, the events not different from those wherein only the production tubing is damaged, (e) following damage to the drilling conductor, the damaged production tubing, the riser and the conductor communicate with the ocean water, and the effluent's flow through both the production tubing and the diversion tubing stop, the pressure and fluid level within the riser and the conductor equalizing with ocean waters, though some flow through the production tubing may continue, the set forth mechanical forces being partially operable, (f) wherein there is damage to the drilling conductor and the effluent is flowing into the ocean waters: (i) a strong rubber sheath with its top hardware is articulated with and cemented to the complimentary hardware located all around the drilling conductor at different strategic levels, the chosen higher level of the conductor hardware deemed to surpass all the breaches to the conductor; (ii) a bottom level hardware about the bottom edges of the rubber sheath, surpassing the diameter of disruption (DOD) about the ocean grounds, is cemented to the ocean floor, while the liquid column within the conductor/riser is suctioned out from the rig level; (iii) following, the well is sealed with a pneumatic sealer, followed by a permanent structuring of a NEW INNERMOST REPARATIVE CASING to seal all the leaks including those to the distant ocean craters, (2) the MOS unit the MOS unit located in the rig vicinity, though otherwise similar as a prototype model, is multi-operational as set forth below (a) the MOS unit receives the effluent directly from the production tubing/oil collection system, however, initially by-passing the rig, (b) it receives the well effluent at all times, to separate its gaseous elements, and additionally, it receives the effluent after a blow-out, as part of the blown-out effluent, apart from flowing into the annulus A, also flows through the production tubing to the rig level, (c) separated gas either entrained or not, reaches a distant destination. (d) separated oil returns to the rig, transiting through an oil tank wherein oil at high pressure threshold is let out through massive pipe with one way valves, (e) the atmospheric air is initially not contained in the modular, the tanks, the tubular system, and the gas receptacles of the MOS unit, after they are evacuated and replaced by oxygen free air,

6. With a breach in the drilling conductor with at least partial cessation of the SLGOE unit functions, an Oil-separator of water-admixed effluent as in claim 1, is devised to separate the water of the admixed effluent, wherein said oil separator tank has means and methods, as below (a) following a breach to the drilling conductor, with the fluid column and the pressure within the riser equalizing with ocean waters, a window closure with a built in outflow tubing is deployed to replace an existing window closure of the drilling conductor (without an outlet tubing 1), the outflow tubing with merging tubules starting from the bottom space between the conductor and the riser, to divert the water admixed effluent to said Oil-separator tank, by syphoning means; (b) subject to relative densities of the two liquid bodies concerned, the water settles to the bottom of the oil-separator tank, whereas the oil rises to the top, as the admixed effluent enters the tank through aside inflow tube near the top of the tank; (c) about midway level of the tank, the oil leaves through an oil-outlet, whereas from the bottom, the water flows back into the ocean, whereas the inflow from the side tube is configured as a tempered merging into the top column, thereby preventing undue perturbations about the settled layers of differing densities; (d) additionally, a similar outflow tubing with a smaller window closure and a terminal dipping lower than the surface water, starts from the top space between the conductor and the riser, to also enter the Oil-separator tank, (e) the outflowing water into the ocean is periodically tested and controlled, for its hydrocarbon content; (f) wherein a leg is elected for the stationing of the EOS and MOS units, the oil-separator tank can be stationed along with, (g) the outflow tubing are clustered with other tubing also exiting from the riser and the conductor, so that only their too strings have such outlet provisions.

Description

DRAWINGS

[0015] FIG. 1: The drawing illustrating The Schematic of a Sea Level Gas-Separator of Oil Well Effluent - a model designed to separate the components of gas from the liquid and semisolid crude of petroleum analogs. The FIG. 1 also illustrates an incorporated dispersion-device, designed to disrupt the semisolid effluent blocking the flow from a gas-separator tank.

[0016] FIG. 2The drawing of The Scheme of Effluent Diversion to Sea Level Gas-Separators of Oil Well Effluent upon a well blow out.

[0017] FIG. 3: The drawing illustrating The Schematic of Oil-Disperser as a spiked Coil-Devicea model to be incorporated in a gas-separator tank of a Sea Level Gas Separator of Oil Well Effluent unit, said device configured to disrupt the semisolid effluent occasionally blocking the out-flow from a gas-separator tank.

[0018] FIG. 4: The drawing illustrating The Scheme of the Positional Disposition of a Sea Level Gas-Separator of Oil Well Effluent about the rig site.

[0019] FIG. 5: The drawing illustrating The Oil-Separator Tank of the Blown out Well Effluent with Admixed Ocean Waters.

DETAILED DESCRIPTION OF THE INVENTION

[0020] The following is a detailed elaboration of what was earlier briefed in the section foregoing, about the model of Sea Level Gas Separator of Oil Well Effluent (SLGOE) Unit, illustrated in FIG. 1. An effluent herein is generally defined as an emanation from the admixed formation of an oil containment, substantially in its natural form, containing gaseous hydrocarbons like methane, and the liquid and semisolid crude of petroleum analogs, extracted in such natural state, usually through a conduit of production tubing. It is the aim of the device to be functional even before the production tubing is installed, as catastrophic events can happen at this time of well construction, as was exemplified in the event of the Deep water Horizon oil well blow-out under construction. The SLGOE is structured within a shell of a modular unit' (the latter shown in the FIG. 4) situated at a safe distance thereof, but within the vicinity of a rig. The SLGOE is particularly designed to separate the gaseous elements from the liquid and semisolid crude of petroleum analogs, and to mitigate a Blow-Out Preventer's (BOP) occasional failures to resist a giant entrainment of inflammable gases under high pressure finding its way into a rig. The devised operations of the SLGOE unit is not to resist the gas under tremendous pressure, but to instantly dissipate it, by a scheme of gas diversion altogether, whereby relatively gas-free elements of petroleum analogs will reach the oil-collection receptacles about the rig site. The SLGOE unit herein described is a general outline of an exemplary prototype model, wherein technological needs known to the industry may be additionally incorporated/implemented.

[0021] FIG. 1, as illustrated, shows an SLGOE model which is simple in its operation, but is devised to be, as can be seen in the drawing, contrastingly different from the basic model of flow-control by a valve mechanism, said difference pursued, because said valve mechanism at times failed to contain, and let out the inflammable gases under high pressure. The valves are proven ingenious inventions, however, in certain set ups as in oil wells, occasionally with immense pressures not elsewhere encountered, the valves inherently lack provisions thereof, to resist such pressuresan example, that nature's might is yet to be conquered, despite the growing technological sophistications. The valves are probably better suited to resist pressures originating from within narrow caliber conduits, such as a production tubing, at least in few instances of unexpected pressures. However, when an innermost casing conforms to an oil conduit, as(1) before a well completion to its last functional detail, a situation similar to Deep Water Horizon Oil Well blow out, and (2) in high production wells, when high flow is planned, without the well destined for an incorporated production tubingthe needed resistance of the BOP to be exerted in both instances, is against a well containment under greatest of pressures. It can be compared to a narrow door controlling a main entry vs. wide gates fully open, when the flood of onslaught is naturally through a higher dimension. Most, though not all BOP failures probably happened/happen under such circumstance, if not for unrecognized technological failures. Henceforth, it is prudent that yet another mechanism in conjunction be set forth in place, to mitigate BOP failures and the resulting calamity, especially for a so far insurmountable situational calamity, before a well completion.

[0022] To accomplish the foregoing function, the SLGOE model is configured as two separate entities, structurally and functionally similar, yet geared to different events or situations, such as:

[0023] (1) Emergency Operational SLGOE (EOS) unit, situated in the rig site, and

[0024] (2) Routine and Emergency Operational SLGOE unit, that is, a Multi-operational SLGOE (MOS) unit, also situated in the rig site.

[0025] (1) The Emergency Operational SLGOE (EOS) unitthe EOS model set forth about the rig site becomes functional when there is BOP failure with well blow out. In this instance, there is a possible damage to the structures about the well head, with the oil finding its way into the ocean waters, which implies that the marine riser and the drilling conductor are disrupted. In fact, in Deep water Horizon oil well blow out there was a total wipe out of the well head structures. The original application (U.S. Pat. No. 9,175,549) described means and methods to deal with such situation, wherein the well bore can be easily accessed (and needs to be accessed) for immediate containment measures.

[0026] However, this CIP enumerates the means and methods wherein the well head structures are structurally intact, but breached significantly that there is an oil leak into the ocean waters that can get progressively worse due to the ocean water finding its way into the oil containment, rising its pressure.

[0027] (2) A Multi-operational SLGOE (MOS) unitthis SLGOE model, also located about the rig site at a safe distance, is functional at all times, as moderate sized gas entrainment that the BOP is not designed to prevent, can still cause rig fire, if exposed to an ignition spark, not preventable about the venue of a rig. Additionally, despite a structural breach in the production tubing/collection system about the well head with substantial leak, significant part of the oil-gas effluent, being under tremendous pressure, can still find its way into the rig, through the collection system. Hence, the oil collection system reaching the rig, is routinely by-passed to the in-vicinity MOS unit, and oil returned to the rig after the gaseous elements are separated. It implies, when there is a blow-out, what is reaching the rig, similarly by-passes it, to return after the pressured gaseous elements are separated, thereof ensuring safety to the crew.

[0028] Both the units, as functional units in different circumstances, however structurally similar, are elaborated in the following.

(1) The Emergency Operational SLGOE (EOS) Unit

[0029] To make the description better comprehensible, both the FIGS. 1 and 2 are herein simultaneously described. The FIG. 1 illustrates the prototype SLGOE model, whereas the FIG. 2 depicts different extents of situational calamities about the well site, to separate the nature and course of events accordingly, to delineate what the difference could be in each event, with the SLGOE unit incorporated into the system. To start with, a basic prototype model of a SLGOE unit with a dispersion device, as in FIG. 1, is described in the following. There are only subtle differences between the EOS and MOS units and they pertain to the orientation/structuring of their inlets and outlets that need individual attention to be paid, where ever they are specified.

A Prototype Model of the SLGOE Unit with a Dispersion Device

[0030] The FIG. 1, not drawn to scale, illustrates the schematic model of a Subsea Level Gas Separator of Oil Well Effluent (SLGOE), named as Sumathi Paturu SLGOE model. FIG. 1 shows an oil diversion tube 400 diverting the well effluent from the source to the SLGOE unit. The said tube 400 is structured to be leading into a moderately large metal (preferably steel) gas separation tank 404, entering through its top, as its inlet tube 406. The bottom of the tank 404 has sieve-like perforations 76, whereas the top of the tank 404 is fitted with widely configured gas outlet tubes 78, clustered all through the available space. Such an arrangement of voluminous out flow of the gaseous components is highly efficacious, when a giant gas bubble is encountered. The tank contains a relatively smaller additional compartment 82 below its sieved bottom, said compartment fitted with a large bottom outlet tube 84, its diametric configuration devised to be wider than the well's incorporated production tubing. The bottom perforations 76 of the tank are in a strategically configured concentric whorl arrangement, designed to filter the effluent to prevent occasional blocks to the bottom outlet tube 84, by large globs of semisolid effluent. However, the perforations 76 in turn can be blocked by semisolid effluent, and hence the gas separator tank 404 has provision for a dispersion device (FIG. 3) 583 that disrupts the semisolid effluent. The dispersion device is detailed subsequently.

[0031] The oil effluent entering the gas separation tank 404 at its top, through the inlet tube 406, down-flows into the spacious milieu of the tank. Such down-flow of the effluent instantly separates the gaseous components that will reach to the top of the tank. The liquid effluent with the incorporated semi solid oil components, flows down to the bottom of the tank 404, wherefrom it finds its way through the wide perforations 76 in the bottom of the tank, to the compartments 82 below. The compartment 82 fitted with an outlet tube 84 lets the oil out continuously from the bottom. The natural up-flow of the instantly separated gaseous components of the effluent, leading into a cluster of large sized gas outlet tubes 78, are diverted into a separate gas collection system. The bottom oil outlet tube 84 from the tank 404 is diverted into an oil passage tank 424, located yet at a lower level, wherein the oil from the tube 84 flows in from the top. The oil passage tank 424 is also fitted with widely configured cluster of gas outlet tubes 74 in the top (to also join the gas collection system), whereby any remaining gaseous components of significance can be further separated, such separation also deemed instantaneous, as was in the gas separation tanks 404. From the oil passage tank 424, through a tube 428, oil is returned through oil collection tube 430, into the oil collection system about the rig by mechanical means thereof. Such means, for example, are aided by laws of hydraulics, conforming to the siphoning principle. In this instance, the tube 428 originates from the bottom liquid column of the oil passage tank 424 to reach a higher level about the rig site. This incorporated model of oil passage tank completely alienates the gas separation tank 404 from the natural drawing force (the latter as an effect of the siphoning principle), whereby the gaseous components will not be otherwise sucked into the down-stream liquid oil collection system, from within the gas separation tank. Such drawing force created by the siphoning principle is exclusively directed to the effluent within the oil passage tank 424, in effect, returning the oil to higher levels.

[0032] The instantly separated gaseous elements about the top of the tanks enter the gas collection system with great ease. As most of the gaseous elements originate in the top of the tanks to start with, only some separated lower down, it is an added advantage in the devised model, wherein the separation of gaseous elements is deemed instantaneous, the encountered gases like methane being lighter than the atmospheric air. However, atmospheric air that contains oxygen, is not part of the milieu of the EOS tank, as will be explained subsequently. In the devised model, even with regard to a liquid gusher, its force is attenuated by the said instant separation of the gases, whatever be their proportion (as yet deemed to be contributing to the force). The gas collection system connected to specially devised receptacles, have provisions thereof, to deal with gases under high pressure.

[0033] A transition tank, located at a lower level, to receive the well effluent first, and then to direct it to the gas-separator tank 404, can also be incorporated into the MOS unit, to buffer the transition, and further to make needed interventions smoother.

[0034] The unique plan of gaseous separation in the devised model - the gas collection tubes 74 and 78 are not only large but are fully clustered, as mentioned, occupying all the available space of the top of the tanks. Such arrangement of voluminous gas out flow from the tanks is highly efficacious facilitating such exceeding volume to instantly dissipate the exceeding pressure of a gas entrainment (the volume and pressure within a gas containment being inversely proportional), that the descent of even a very high pressured giant bubble reaching the bottom of the tank, is unlikely (as most of the gaseous elements originate in the top of the tank to start with). In a giant gas entrainment, there needs no separation of the gaseous elements. However, the gas entrainment needs to be instantly diverted to the top of the tank, which, precisely due to its massive size compounded by its massive pressure, otherwise could instantly entrain into the downstream oil-outlet, and then into the rig. Additionally, the effluent inlet tube is only one, whereas the equally sized gas outlet tubes upstream are many more, the generally encountered inflammable gas methane being exceedingly light, naturally rising to the top. The terminal gas receptacles should also have a one way valve that lets out the gas at a moderately high pressure thresholds, so that a back pressure will not build up in the SLGOE unit. The gas is also continuously let out by a land collection system so that a high pressure is never built up in the gas receptacles.

A Well Blow Out and Emergency Scheme of Effluent Diversion to EOS Unit

[0035] The schematic of a well blow outFIG. 2 is a schematic illustration of a well blow out, not drawn to scale. It shows the well head structures breached, but structurally in place. It shows the well head 510, and the BOP 512. The BOP is connected to the marine riser 518 that is reaching the rig level 536. FIG. 2 also shows the drilling conductor 520, and the production tubing 514. While the well is not under construction, the annulus A 524 is shown to be closed from the rig by a circular barrier 530 that is tightened by a wedged structure 526 of the riser 518, creating a nested configuration. The barrier 530 is fixed in position by hardware provisions 534, affixed to the riser. The barrier 530 can be removed, if the well needs to be worked on, by un joining the joint structure 568 of the production tubing 514, unbolting the riser hardware 534, releasing the barrier-hold 532, and lifting up the barrier 530, that had encircled around the production tubing 514 and tightened by a rubber washer. The annulus-A barrier 530 is located above the level of the ocean surface 528, meaning, it is closer to rig level.

[0036] A wide effluent diversion tube 400 starts in the bottom of the annulus A 524, and rises to a level above the surface water 528, where it emerges from the riser 518 and the conductor 520, to reach the EOS unit about the rig site, to enter the gas separator tank, 404. The diversion tube 400 is devised to have many small inlet tubes 516 in its course through the riser. As the riser's structuring can be complex, the diversion tube 400 can course along the walls of the riser, and can be linear or convoluted, thereby adapting to the structural complexity of the riser interior. FIG. 2 also shows the returning carrier tubes from the EOS unit, the oil only tube 430, reaching the rig travelling outside the riser/conductor. The gas only tube 562, reaches the terminal gas receptacles in a safe distance away from the rig. The diversion tube 400 can be normally closed by one way outlet valves that open upon moderate pressure. By a relatively larger size of the diversion tubing 400, a larger proportion of the blown-out effluent (that can be solely gaseous elements) within the annulus A tend to enter it at all levels through many of its small inlet tubes 516, whereby the structures within the riser 518 are protected from being otherwise blown off from their deployed sites, by the pressured effluent/gas entrainment. In the case of the EOS unit, the gas collection tube that leaves the EOS unit's modular shell also contain one way outlet valves that open upon moderate pressure, so that the atmospheric air is not normally contained within the tanks and the tubular system, once the air is evacuated initially, to fill the system with oxygen free air.

[0037] The extent of a well blow-outthe structural breach about the well head depends upon the severity of the blow out. In mild cases only the production tubing 514 would be breached (540), whereas with increasing severity, the riser 518 can sustain damage (544), followed by the damage (546) of

With Deployed Diversion Tubing, the Following Consequences may be Expected

[0038] 1. Following damage to production tubing 514, with the barrier 530 sealing the annulus A from the rig, the pressured effluent will be forced into the diversion tubing 400, to reach the EOS unit, where gaseous separation is achieved. With the force of the gas entrainment attenuated, the oil and gas reach their destinations separately. The effluent will find its way also through the production tubing 514, and reaches the rig level (see FIG. 4) 536, but by-passes it to flow through the MOS unit 34 for eliminating its gaseous components to then be returned to the rig 536, if there is any extent of non-gaseous components. In a situation where the production tubing 514 is not yet installed, the blown out effluent, whether of single or of admixed element(s), will enter only the diversion tubing 400 to reach the EOS unit, and the FIG. 2 should be read as lacking in the structure of production tubing numbered as 514, and the barrier 530 needs to be viewed as without a provisions for the passage of a production tubing 514.

[0039] 2. Following damage to the riser 518, as long as the conductor is intact, the effluent will still flow into the diversion tubing 400 (to reach the EOS unit), as well as the production tubing 514, the latter reaching the rig level MOS unit, with the events not different from those in the foregoing section 1.

[0040] 3. Following damage to the drilling conductor 520, the annulus A communicates with the ocean water, and the flows through both the production tubing 514 and the diversion tubing 400 (the latter situated above the ocean surface) stop, as the pressure and fluid level within the annulus A is equalized with ocean waters, unless the effluent is exceptionally pressured. Some flow through the production tubing 514 may continue, because of the mechanical forces set forth in place being partially operable.

[0041] Oil flow into the ocean watersunhindered, the oil spill into the ocean can be incessant, progressively turning into a spewing geyser. FIG. 2 also shows immediate temporary measures, though not all encompassing. In this instance, the surface structures are intact, with the well bore and the well's innermost casing not easily accessible to seal with a pneumatic sealer (the EPSE or SSE), described in the original specification. A strong rubber sheath 558 with its top hardware 548 can be articulated with complimentary hardware 564 located all around the drilling conductor, at different strategic levels. The chosen level of the complimentary hardware 564 of the conductor is deemed to surpass all the breaches (546) to the conductor 520. The bottom level hardware 560 of the rubber sheath can be burrowed into the ocean floor and cemented. The top approximation with the conductor 520 is also cemented to create a water seal. The oil company should store few rubber sheaths to suit different heights. Meanwhile, preparations can be made to access the well to seal with the pneumatic sealer, followed by a permanent structuring of NEW INNERMOST CASING to seal all the leaks, as described in the original specification. It is aimed that the rubber sheath 558 is also sized to surpass the Diameter of Disruption (DOD) on the ocean grounds, though it may not be possible at all times. After the rubber sheath 558 is cemented creating a water seal, the liquid column within the conductor/riser is suctioned out from the rig level so that a relatively liquid free annulus A is created to work on the well bore. It is impossible to stop ocean water finding its way through the brcaches of the innermost casement, from distant ocean craters, until the time a NEW INNERMOST REPARATIVE CASING is cemented, but the water can be constantly suctioned out to create a workable milieu, while also a pneumatic sealer (the EPSE/SSE) blocks the effluent from below.

[0042] Finding the highest level of the breaches about the Conductor by color seeping techniquelarge visible breaches can be easily identified. At the level from where they are not perceptible, to identify them, under ware night-vision video cameras are installed for few feet above this level, also with surrounding brightly illuminated lights. Solid blocks of a pastel color (preferably pink and yellow), are dropped from the rig into the space between the riser and conductor, whereas the video cameras detect the highest level where the color seeps through the conductor into the ocean waters. If the first attempt fails, a different brighter color (red, dark green or dark blue) is used the second time, to detect a suspicious higher level of the breach. The oil company can also employ sophisticated methods like sonar flow-detecting devices, directed to the suspicious confined areas.

(2) The Multi-Operational SLGOE (MOS) Unit

[0043] The MOS unit 34, illustrated in FIG. 4, is shown to be structured within a modular 32 and otherwise exemplifies the typical structural disposition of either the MOS unit or the EOS unit in the rig vicinity, about the surface waters. The MOS unit, multipurpose in its function, receives the effluent directly from the production tubing 514/oil collection system, initially by-passing the rig 536, as was earlier specified. The inlet tube 24, in its structure and functions is similar to the prototype model SLGOE unit's diversion tube described earlier. The MOS unit, as specified, receives the well effluent all the time, to separate its gaseous elements. Additionally, it also receives the effluent after a blow-out, as it was mentioned that part of the blown-out effluent, apart from flowing into the annulus A, also flows through the production tubing 514 to the rig level. Separated oil returns to the rig through the outlet tube 26, whereas the up flowing gas reaches a destination at a safe distance through an outlet gas pipe 40. The gas pipe 40 is the very large common pipe for all the merging gas outlet pipes 78 and 74 of the tanks, in the earlier described prototype SLGOE unit. If a leg is elected to station the EOS and MOS units,

[0044] The disposition of a prototype SLOGE modular in the rig vicinity - the SLOGE modular 32, shown in FIG. 4 not drawn to scale, can be erected on a single leg, or anchored to the rig by units of metal strings below the surface water 52. In the latter plan, they are anchored to the leg 54 of the rig in a hemi-hammock like arrangement. Each metal string unit has two strings. Each string is made of sturdy but narrow metal rods or poles (about 2-3 cm diameter) 38. In each unit, the adjacent metal rods 38 of a string are connected by a linkage ring, wherein said rings of one string are connected to the centers of the rods 38 of an adjacent string, as shown in FIG. 4, wherein, it may be noted, that the strings are shown with exaggerated dimensions and details including that of the linkage ring, only to clarify the structure. The arrangement prevents the strings from sideward bending or sinking, so as to maintain their desired axial length, thereby the modular 32 precluded from floating closer to the rig. The units of coupled strings are multiple, that fan out towards the modular 32, where they have perpendicularly structured strings to make a grid, with atop metal board 36 resting on the grid. The rods can be many meters long, wherein the originators are direct extensions from the leg 54 with no linkage or ring connections, being connected by bolting hardware. Underneath, the strings are supported by floating (air-locking) metal/concrete blocks 42, with locked in air column 48. There are three such rows of concrete blocks 42 that are similarly linked like the metal rods, and also in turn connected to the metal rods 38. One column of concrete blocks 42 lay underneath the center of the metal board 36, whereas the other two lay on either end. In the bottom, the concrete blocks are furthermore connected to smaller metal strings 46, the latter similar as those in the top in their structure. The smaller metal strings 46 also originate from the leg 54, and tangentially radiate upwards towards the concrete blocks 42, however, with no bending, whereby they keep the concrete blocks in destined position, curtailing their tendency to float to the surface. It is important that the air-locking concrete blocks 42 stay under water, not to be exposed to heat, in the event of a rig fire. The modular 32 structured above the metal board 36, has desired accessing and protective amenities like a door, a corridor, multiple enveloping burlap sheet coverings, and smoke-fire-alarm activated surface fans and sprinklers (studded in a sparse framework of exoskeleton), along with a burlap enveloped sprinkler-studded pathway leading to the rig, with powerful jets of water emanating from the edges of the pathway, or else, a .sup.th foot submerged pathway, the latter with no erected raising structures. Powerful jets of water emanate from the exterior of the modular corridors about the level of the surface waters, to keep away spreading oil/fire on the ocean waters, upon a rig fire. The length of the rods can he configured very long that only few of them are incorporated. The modular 32 can be floating or partially submerged, and as an alternative thereof, can be erected also on a single large submerged air-locking concrete block, the latter also steadied by smaller metal strings 46, as many variations and options are possible in the devised plan. As mentioned, this structural plan is applicable to the EOS unit also. Obviously, the EOS and MOS units can be installed adjacently, if a single leg structuring is planned, or else, they have to be anchored to different legs to evenly distribute the load, only in case it is not an undue strain upon the legs of the rig, especially during adverse oceanic weathers.

[0045] The gas receptacles at a safe distance away can be similarly anchored to the leg 54. The terminal gas pipe 562 from the EOS unit will also be reaching such similar destination.

The Oil-Separator of the Water Admixed Effluent

[0046] When there is breach in the drilling conductor 520 with oil flowing into the ocean contaminating the ecosystem, there can be an optional on-off mechanism, to minimize such oil flow into the ocean waters. In this option, an on-off outflow tubing 570 starts in the marine riser 518, just below the surface level 528 of the ocean waters, to reach an oil-separator tank 571 (shown in FIG. 5), also located in the vicinity of the rig. It operates by siphoning principle that can be switched on, when there is breach to the drilling conductor 520 and the fluid column within the riser equalizes with ocean waters. As there is a substantial admixture of oil and water in this context, the oil-separator tank 571 separates the oil from the ocean water to a reasonable extent. Due to relative densities of the two liquid bodies concerned, the water 572 settles to the bottom of the tank 571 whereas the oil 573 rises to the top, as the admixed effluent 574 enters the tank from the on-off outflow tubing 570, entering the tank as a side inflow tube 575, situated nearer to the top of the tank. On the opposite side, about the midway level of the tank, oil 573 leaves the tank through an oil-outlet 576, whereas from the bottom, the water 572 flows back through water-outlet 579 into the ocean 528. The inflow and outflows are controlled by flow clamps to maintain the fluid level within the tank 571 in such a manner that the inflow from the side tube 575 is not a down-flow, but a tempered merging into the top column, so that there are no undue perturbations in the settled layers of different densities. As the incoming ocean water can be of enormous volume, separation in this manner facilitates its return to the ocean with no significant contamination, and oil collected with no significant water admixed. The process can be continued until the rubber sheath 558 is deployed outside the conductor, and if it is deferred by the oil company, until the pneumatic sealer (the EPSE or the SSE) is stationed within the well bore. Due to the positioning of the on-off tubing 570 at the top of the riser 518 below and very near to the surface level 528 of the ocean waters, the tubing 570 tends to be preserved, though shut off during a well blow out. It can optionally have smaller merging tubules. The space between the conductor 520 and the riser 518 can also have a similar on-off tubing 542 starting from the bottom space and having smaller merging tubules at different levels, wherein the tube 542 joins the tube 570 at any level feasible. This facilitates more ocean water to be let out than the tubing 570 can singly accomplish. The tubing 542 not subject to direct force, also tends to be preserved upon a blow-out. The outflowing water 572, into the ocean, can be periodically tested and controlled, for its hydrocarbon content. If a leg is elected for the EOS and MOS units, the oil-separator tank 571 can be also stationed along with. Though the outlets in FIG. 2 are shown to be scattered at different places, it is easily planned that they all are clustered to be nearby each other, so that only one string of the riser and conductor may have such outlet provisions.

The Video Monitoring of the Gas Separator Tanks

[0047] In any model of the SLGOE unit, the gas separator and the oil passage tanks will be provided with a video device and/or a sonar device to monitor the state of affairs within the tanks, and are designed to be operated by a solar battery power source. The video device located within the modular 32 just as the tanks are, is best devised as a night-vision model. Each tank is structured to have an air-tight glass window (that the EOS unit will not let in the atmospheric oxygen) near its top (in a side away from the oil inlet tube), whereas the video facing the window, is positioned with a downward incline of its lens side. The window door opens only to the interior of the tank, with the opening mechanism similar to the conventional automated doors, wherein an opened door when left ajar, closes automatically after few seconds. The video when needs to document the tank's interior, its projectile structure moves forwards to push on a control button designed to opening the window door. The lens tubular then zooms forwards, while the camera moves in all directions picturing the tank. When stopped, the lens tubular moves back, and the instrument retreats, as the window door closes in few seconds. It needs an immediate follow-through, that an additional video device also installed within the modular documents that the tank's window-door is properly shut, after the video device retreats. The devised mechanism facilitates a clear picturing of the tank each time, without the camera lens smeared by the down flowing oil/gaseous elements of the tank. As the whole SLGOE unit is within a modular unit, momentarily opening the tank window, would not lead to any undue consequences thereof.

The Spiked Dispersion Coil Device

[0048] Optimally, the gas-separator tank 404 of the SLGOE has a dispersion coil unit 581, the latter illustrated in Figure-3. The coil unit 581 is made up of (a) a dispersion coil device 583 of radially connected concentric circles, preferably in steel, (b) a central supporting vertical rod 589, the latter fitted to a top structure of the tank 404, and (c) a motion control device of said central supporting rod 589. The dispersion coil 583 optionally has a lamp shade like configuration with a minimal incline. The coil 583 moves up and down while operational (when a block to the down-streaming flow from the tanks 404 is noted, or suspected). It can also be operational in continuum at preset intervals, that is, at about every 3-5 minute intervals, in effect conforming to 4-5 axial motions each time, each axial motion including a complete downward and upward movement. The concentric circles 587 of the dispersion coil 583 have knife-like cutting edges about the bottom (not shown in the drawing), whereas said cutting edges also have spiked projections 590 in strategic places that correspond to the positional configurations of the whorled bottom perforations 76 of the tank. In a downward thrust, the spikes 590 of the coil disrupt the blocks to the bottom perforations 76 of the tank, whereas the bottom cutting edges of the concentric circles 587 severe large globs of oil at the bottom of the tank, thereby the dispersion coil 583 serving a dual purpose. The cross sectional dimensions of the spikes 590 are devised to be similar, but optimally smaller than the perforations 76, as, in the axial downward motion of the device 583, all the spikes 590 are designed to pass through the perforations 76. In conformity to such function, the knife like bottom extensions of the circles 587 located nearer to the center, are structured longer, if a lamp shade configuration is elected, whereby their lower ends are in a same horizontal plane, and all the spikes are designed to pass through the perforations of the tank, in the axial downward motion of the device.

[0049] In this preferred configuration, as seen in the FIG. 3, the spaces 591 between the concentric circles 587 are wide, and there are only two radially positioned members 592 in equidistance, connecting the circles, whereby the semisolid crude of the effluent will not settle on the top surface of the dispersion device 583. It further facilitates an easy ascent of gases that are separated in the bottom level of the tank. The bottom perforations 76 are devised to be oblong rather than round, such structuring facilitating better passage through, of the semisolid effluent. With the unit as structured, a continuous oil flow down-stream is always ensured. The dispersion device 583 is normally positioned in the bottom level of the tank 404 just above its oil column, so that while set to be operational, the movement of the coil as well as the time needed for said movement to reach the sieved bottom of the tank, are brief. The control device for the axial up-and-down motion of the central supporting rod 589 of the dispersion device is positioned outside, about the top of the tank (but the whole dispersion coil unit 581 along with the motion control device is securely protected within a shell of a modular), whereby the axial motion of the rod conforms to external controls (not shown in the drawing).

The Modular Protective Enclosure of the SLGOE Unit

[0050] In view of the utmost functional importance of the SLGOE unit, it is prudent that the whole unit is in an enclosed protective structure. It is easily actuated by structuring the unit in a modular capsule of pre-configured sizes. With all the inlets and outlets capped, the modular 32 is deployed in its destined reception site above the metal board 36 in the vicinity of the rig. The needed stepwise incline of the tanks is configured within the modular capsule, whereby the base of the modular itself conforms to a horizontal structuring, for its easy and secure stationing.

[0051] The modular is structured with retractile wheels (hooded caster wheels) to its bottom, for its precise stationing. The earlier described video and/or sonar monitoring devices are incorporated into the modular also, in addition to their incorporation about the tanks. It is a better provision that the modular also has a bullet-proof glass window, protected outside by a bolted metal window. The solar equipment power sourcing these monitoring devices is structured outside the modular (with protective enclosure), ensuring the needed sun exposure. The modular unit is equipped with conventional hooked and ringed structures, strategically placed about its outer shell, for bottom cementing at strategic places, needed of its secure stationing. Such detachable yet strong anchoring allows a replacement of the unit, when needed. The modular also has helium sacs 57 secured all through its roof, so that it resists perturbations of the oceanic weathers, apart from its barge-like base structuring resisting any upheavals, to stay in an upright positioning. Other details are specified in the section The multi-operational SLGOE (MOS) unit. Threading in entirety, of the unit's tubing system, is as described at the end of this discussion.

[0052] The whole SLGOE modular unit is stationed at a lower level than the originating diversion tubing 400 and 24. The tanks of the unit as configured, can be set forth fairly closer to each other, that the modular unit as a whole would be less space occupying

[0053] THE VULCANIZED RUBBER AS THE STRUCTURAL CONSTITUENTit can be noted that all the rubber washers or any assembly devices of rubber, incorporated in the oil gas separator unit, and in the modular unit, are made of vulcanized rubber, the only type that can resist the degrading attack of the petroleum analogs.

The Utilitarian Merits of the Invention and the Precautionary Measures to be Incorporated

[0054] The proposed models as a whole, by any standard, encompass simpler methods to separate the regularly encountered oil gas mixture, or occasionally encountered greater amount of admixed gas under significant pressure. The target is to mitigate the dangerous calamities of gas entrainment, rather than for 100% refining measures of oil gas separation that is otherwise pursued by the oil production plants engaged in exclusive crude-oil separation (the Oil Refineries) by means of a highly involved process of Fractional Distillation.

[0055] For the BOP to control pressures involving most powerful of ruptures, in all high volume wells where such events can be reasonably expected, it is a worth trying option to divide the oil line into multiple outlet conduits within the innermost casing and each outlet conduit structured to pass through its own stack of BOP, wherein each stack can tackle the divided power of the gusher, reduced to half, or to one third of its strength. It implies, it is a good practice to never allow a production casing (the innermost casing) to be a functioning oil-conduit in high volume wells, a practice that takes out at the outset, probably an unrecognized brewing recipe for danger. It is of suspect, that the catastrophic events had historically happened when the oil companies had indulged in such ambitious though undesirable practice, or else, they must have had happened before the well completion to its last functional detail.

[0056] Other incidental utilitarian advantage for the oil companies is - claiming a substantial amount of gaseous components of the well effluent, instead of the oil refineries doing so. Why it is substantial is, once the effluent is thrown into the milieu of the tanks (including the oil passage tank), the gaseous elements can only rise up to the tank to be let off in entirety. Only small bubbles intimately admixed with semisolid effluent are left to be separated by the oil refineries. These seemingly unwanted elements are highly utilitarian for other purposes that the gas companies can also invest in, which probably they are already doing to some extent, as indeed they extracted these from the underwater oil containments.

The Instant Joint Configurations and Closing Caps

[0057] The invention further envisions a model of tubing, and methods of instant system joining or closing, for all future units, or as a replacement-tubing for existing units. Said tubing is structured to have a deep threaded configuration on the inside or the outside, traversing the entire lengths. Inner threading is better (though manufacturing is more involved), as outer threading can collect sediment and lose its precision, and needs cleaning with a firm bristled brush. The treading of the tubing, small or lengthy, can involve the well and its vicinity, the rig, the air tubing, and finally the appended tubing structures of costly equipment, facilitating instant joining or closing of a compromised or broken system, aided by means of [0058] (1) Instant joint-structuresthese are devised to be shaped as I, T, J, L, C, U, Y etc. with similar inner or outer threading as the tubing itself, to be inserted for system joining, when a conduit line is broken. The working of the joint-structures conforms to a sliding screw, aided by two or more conjoining I shaped tubing with complimentary threading on the opposite side. The conjoining I tubing have their threaded outer diameter smaller than the threaded inner diameter of the involved tubing system and devised joint configurations, or else, their threaded inner diameter larger than the threaded outer diameter of said complimentary tubing. When a conjoining I tubing alone is suffice, it is inserted all by itself, as a sliding screw. The functionally uninvolved middle part of the joint-structure is enlarged externally for handling, even by robotic maneuvers.

[0059] (2) Closing capsthey have complimentary threading to their stems (i.e. having a smaller dimension and outer threading, if the tubular system has an inner threading, and the vice versa), for closing a system, when system joining is of no option. The functionally uninvolved external part of the stem terminal enlarges to double the size or more, ending in a sturdy and massive closing cap, to resist enormous pressure at times exerted by the tubular system at the terminal, and the massive cap with similarly sized distal stem is amenable to robotic maneuvers. Simple closing caps with complimentary threading are used to temporarily seal one end of a severed tubing while the other severed end is worked on.

[0060] How to find the source of gas/oil leak and mending itabout the oil-tubing of the rig confines and outside, oil/gas sensing equipment are placed at equidistance, each numbered, defining its territory. When leak occurs following a tubular damage, its territorial equipment rings its alarm first, though other alarms ring later, as the leak spreads. The devised computer soft-ware notes the timing, however, the one that first rang, is the source (unless the leaks are multiple). The leak is confirmed by the adjacent alarms that rang immediately following. The computer sets forth the chronology, for an instant information. The security crew familiar with all the numbered territories, should deploy emergently the instant joint structures. The production tubing within the well has its own pneumatic plugging device, the Emergency Plugging Oil Conduit (EPOC), disclosed in the original application (U.S. Pat. No. 9,175,549), deployed after a well blow-out with total wipe-out of well-head structures (to be done when the oil-leak is a mere spill). As the joint structures are fixed in dimensions, the length of the tubing to be severed should be properly configured. On the other hand, as the minimal length of a damaged tubing to be severed cannot be minimized any more, the number of the joint structures (with one or more conjoining I tubes) are to be properly configured before severing the tube. The I configurations are structured as both joint-structures and conjoining tubes, the latter with complimentary threading. The leak is insulated first, and the tubing including the I tubes to be inserted, are articulated outside, and then the damaged tubing is cut, for the articulated set to be inserted. One cut end is temporarily closed by a simple cap, while the other is worked on. The final manipulations of the two conjoining I tubing are done in-situ, to establish a conduit with vulcanized rubber washers also for a fluid-tight closures. It is obvious to all that the distorted tubing may need an intervening U/C joint, and a bent L-shaped curve needs an L-joint, whereas a complex interconnection needs a T-joint. The crew must have a mock practice of possible maneuvers. The joint-configurations can conform to two designssubtle or striking (Sub or Stri). In the subtle configurations, the devised curves are less obvious.

[0061] Unceasing oil/gas emission from a source that cannot be detected/mended is a cause of an unceasing fire, or else for an uncontainable pollution of the eco-system. Hence, such structural mandate is as important as all the other security measures put together. Moreover, what needs to be herein implemented is only a small step forwards in means familiar, however, with a big leap thereof, in the remedial functions achievable.