Method includes recovering a stimulating fluid, which includes transferring working fluid having the stimulating fluid from an operating site (102) to a current temporary processing facility (TPF) (110) that is located remotely with respect to the operating site in the geographical region. After purifying the working fluid at the current TPF (110), thereby providing the stimulating fluid, the stimulating fluid is transferred from the current TPF to an injection site (103) that is located remotely with respect to the current TPF and the operating site. The method also includes transporting fluid-handling equipment after a designated condition has been satisfied. The fluid-handling equipment is transported from the current TPF (110) to a new TPF (110). The recovering of the stimulating fluid, the transferring of the stimulating fluid, and the transporting of the fluid-handling equipment is repeated a plurality of times. The current and new TPFs are at different locations within the geographical region.

A method and system for separating oil well substances by using a separator system comprising inclined tubular oil and water separators for separating the respective fluid components mixed in fluids from oil wells, combined with providing a liquid lock upstream the inclined tubular oil and water separators, as well as establishing and maintaining water-wetted entrance to the inclined tubular oil and water separators.

A separator system and method may provide a four-way separator that may separate a material and remove a hazardous material. The hazardous material may include gas and sand that may be removed by the four-way separator. The separator system and method may further provide a main unit that may include three chambers or recirculation hoppers, an auger sand extractor, and a strap tank. The separator system and method may provide a faster rig-up time and may be exclusively driven by hydraulics.

The presently disclosed subject matter concerns a gas-purge assembly comprising a phase-separator and a gas-purge valve, for receiving a gas-liquid mixture and intermittently release gas therefrom; said phase-separator comprising a separator tank for accommodating said gas-liquid mixture and facilitate bubbling of gas of the gas-liquid mixture towards an upper portion thereof; and a main port for receiving the gas-liquid mixture from a top portion of an external gas-liquid mixture source disposed therebelow; said gas-purge valve comprising a valve chamber for separately accommodating liquid and gas, said valve chamber having an upper zone in fluid communication with an upper portion of said separator tank, and a lower zone in fluid communication with a lower portion of said separator tank; a venting aperture formed at said upper zone; and a sealing arrangement, configured to intermittently seal and open said venting aperture to enable intermittent release of gas therethrough.

A computer-implemented method can include implementing a feedback control scheme including controlling a separation efficiency for a high-pressure production trap (HPPT) by manipulating the demulsifier concentration. Controlling the separation efficiency can include determining, as a function of temperature and based on correlations of historical process data, minimum and maximum target separation efficiencies; identifying a target separation efficiency that is between the minimum and maximum target separation efficiencies; and adjusting a demulsifier dosage, used in calculating the separation efficiency, between a minimum demulsifier concentration and a maximum demulsifier concentration. The adjusting can include: when the separation efficiency is below the target separation efficiency, adjusting, using a PID controller, the demulsifier dosage upward but not to exceed a maximum dosage concentration; and when the separation efficiency is above the target separation efficiency, adjusting, using the PID controller, the demulsifier dosage downward above a minimum dosage concentration.

A system for removing particulate matter from a multiphase stream comprising gas, liquid and the particulate matter. The system comprises a first vessel for receiving the multiphase stream and separating a majority of gas from the multiphase stream and collecting a slurry of liquid and particulate matter; a second vessel for receiving the slurry and causing separation of the particulate matter from the liquid and for generating a pressure head of liquid against the particulate matter; a third vessel for receiving the particulate matter from the second vessel and collecting the particulate matter until a pre-determined mass or volume of particulate matter is collected; and an outlet in the third vessel for conveying the particulate matter out of the third vessel.

A liquid supply system includes a liquid supply unit; a liquid pressurizer connected to the liquid supply unit; a compressor connected to the liquid pressurizer; a pump at a rear end of the liquid pressurizer to allow liquid to flow; an inflow control valve between the liquid supply unit and the liquid pressurizer; and an outflow control valve between the liquid pressurizer and the pump, wherein the liquid pressurizer is configured to supply liquid having a dissolved gas concentration that is lower than a dissolved gas concentration of liquid supplied from the liquid supply unit to the pump.

In a crude oil purification process including phase separators, a vapor recovery unit (VRU), and dew pointing/dehydration and CO.sub.2 removal membranes, instead of compressing the low boiling point (i.e., C.sub.1-5) hydrocarbon vapor stream from the VRU along with the main portion of gas from the separation train and feeding it to the membranes, it is compressed and dehydrated along with the H.sub.2O/C.sub.3+ hydrocarbon enriched permeate from the dew pointing and dehydration membranes.

A three-stage tubular T-shaped degassing device with microbubble axial flow and spiral flow fields is provided, which is applied to quick degassing of a gas-liquid two-phase flow. The three-stage tubular T-shaped degassing device adopts a quick degassing technology combining a microbubble uniform mixed rotational axial flow field and a spiral runner conical spiral flow field with layered jet collision reversing depth degassing. A microbubble uniform mixer is configured to adjust gas-liquid two-phase flow containing big bubbles into microbubble uniform mixed axial flow. A microbubble cyclone is configured to adjust the microbubble uniform mixed axial flow into multiple strands of rotational axial flows containing microbubbles. A rotational axial flow degasser implements the horizontal type microbubble uniform mixed multiple strands rotational axial flow degassing operation to remove most microbubbles to form axial flow gas and axial flow liquid.

The three-stage axial flow degassing device adopts an efficient degassing technology including a vertical high speed swirling field, a horizontal rapid axial flow field and a vertical reversing scrubbing field formed by a combination of vertical tubes; the first-stage degasser performs the first-stage segmental vertical high speed swirling degassing operation, removes the gas phase carried by the gas-containing fluid, and forms a primary gas and a primary fluid; the microporous uniform mixer breaks bubbles of the primary fluid and forms a gas-liquid uniform mixed flow; the second-stage degasser performs the second-stage horizontal vane wheel swirling generating rapid axial flow degassing operation, removes the gas phase carried by the gas-liquid uniform mixed flow, and forms a secondary gas and a secondary fluid; the third-stage degasser performs the third-stage vertical reversing deep degassing operation, removes liquid phase carried by the secondary gas, and forms a tertiary gas and a tertiary fluid.