A system for producing hydrocarbons from a subterranean well including a wellbore extending from a surface into a subterranean formation, the system including a wellhead disposed at the surface. In addition, the system includes a production tree coupled to the wellhead. Further, the system includes a casing coupled to the wellhead and extending into the wellbore. Still further, the system includes a first plurality of production tubing strings extending into the casing from the wellhead to a first production zone. Each of the first plurality of production tubing strings is configured to provide a fluid flow path for gases from the first production zone. The production tree is configured to selectively and independently control fluid flow through each of the first plurality of production tubing strings.

An oil and gas well gas separator that operates in conjunction with an isolation means and a tail pipe to reduce the pressure gradient of the well fluids flowing up the tailpipe, to thereby reduce the well's producing bottom hole pressure.

The present invention concerns a system for extracting the liquids from a well producing liquid and gas. The system comprises a separation wall defining, in the well, a first space and a second space; a liquid-gas separator; and a system for eliminating separated liquid. The first space is suitable for conveying a mixture comprising the gas and liquid from a production area to the separator. The separator is suitable for separating the gas and liquid from the mixture. The second space receives the liquid separated from the mixture. Finally, the elimination system is suitable for eliminating the separated liquid using at least the gravitational potential energy of said separated liquid in the second space.

A self-cooling electric submersible pump having an integrated cooling system is provided. The cooling system is configured to cool and lubricate the electric motor section of the pump by expanding a compressed multi-component coolant fluid through flow channels within the motor. The coolant fluid contains a first fluid having a boiling point of at least 230° C. and a second fluid having a boiling point of less than 150° C. During pump operation the first fluid acts as a largely incompressible liquid and the second fluid behaves as a compressible gas. A compressor compresses the second fluid in the presence of the first fluid to produce a hot compressed coolant fluid from which heat is transferred to a production fluid being processed by the pump. The compressed coolant fluid is expanded through an orifice and into the motor flow channels, returning thereafter to the compressor.

Artificial lift systems, methods, and apparatuses are described. An example artificial lift system may include a plunger have an energy-storing component to store energy as the plunger descends through a wellbore and release the stored energy as the plunger ascends through the wellbore. The energy-storage component may be a spring. The spring may be compressed in response to rotation of a propeller coupled to the spring. The propeller may rotate in a first direction in response to interaction of the propeller and a liquid in the wellbore as the plunger descends. The spring may expand during uphole movement of the plunger to rotate the propeller in a second direction, opposite the first direction, and assist in lifting the plunger to the surface.

A coupling for use with a continuous rod and a reel, and a method of using the coupling to coil a continuous rod on the reel. The coupling includes a threaded box portion for threadedly connecting with an uphole pin end of the continuous rod. The coupling includes a connector for securing the coupling to the reel. Once secured to the reel by the coupling, the continuous rod can be coiled around the reel by rotation of the reel. In an example application, the connector may include a ring for securing the coupling to an outside guide pin of a collapsible service reel.

A new method separating sand, solids, and produced particulates down-hole in a well producing hydrocarbons. The separation assembly can include ether one, two, or more segments or stages of varying lengths depending upon the individual application. The assembly is installed into the tubing string or delivery conduit of a well producing hydrocarbons. One stage can consist of a velocity chamber whereby separation of particulates occurs by increasing the downward velocity of particulates and reducing the upward velocity of hydrocarbons thereby allowing the particulates to “fall-out” into a lower chamber where the particulates are captured. Another stage can consist of a filter whereby particulates are captured in a chamber that can consist of filtering materials such as gravel, rock, sand, wood, or manmade materials. Each of the stages can be employed individually or in combination.

A method and system are shown that conditions an underground reservoir by flooding the reservoir with a heated fluid to transfer heat to the underground reservoir and cause oil and gas to increase flow during recovery from the underground reservoir, wherein the fluid is heated by heat from a geothermal well, or heated by heat generated by burning gas recovered from the underground reservoir, or heated by heat from both a geothermal well and heat generated by burning gas recovered from the underground reservoir, and recovering the oil and gas with the increased flow.

A hybrid hydraulic gas pump system includes a hydraulic gas pump installed on the lower end of a production tubular where the production tubular incorporates a gas lift system. The hydraulic gas pump may be operated using the same gas in the annular region as the gas lift system or may be operated using an independent supply line where the independent supply line is concentric with, or at least within, the production tubular. In some instances, the gas pump chamber may simply be an upper packer including a pickup tube, a check valve, and a pressurized gas supply line or other pressurized gas access mechanism along with a lower packer including a check valve. Each upper and lower check valve allows fluid to flow from below the packer to above the packer.

A linear actuator for pumping comprising a stator having an inner opening, a shaft having a plurality of permanent magnets spaced linearly in the axial direction, the shaft disposed in the stator opening and configured to reciprocate linearly in the axial direction relative to the stator, the stator comprising a first stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a second stator assembly having a plurality of pole sections spaced linearly in the axial direction and a plurality of coils disposed therebetween, a bearing assembly positioned axially between the first stator assembly and the second stator assembly, and the bearing assembly having a width that is a function of the spacing of the plurality of pole sections of the first stator assembly and the second assembly and the spacing of the plurality of permanent magnets of the shaft.