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7621339 |
Downhole production and injection pump system
A downhole pump, positionable in a fluid column that is substantially separated into an oil portion and a water portion, for selectively lifting the oil to a surface and injecting the water into an...
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7610964 |
Positive displacement pump
A submersible pumping system for use downhole that includes a housing containing an expandable fluid, that when expanded pushes a piston that in turn pumps wellbore fluid to the surface. The...
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7594543 |
Method and apparatus for production in oil wells
The present invention relates to an apparatus and method for production from oil wells. More particularly, the present invention relates to an apparatus that utilizes at least one injection pumping...
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7591308 |
Multi gas well production arrangement
A method of optimizing fluid (gas/oil) throughput of a battery complex to monitor and control the flow of an individual well in a field of wells at any particular instance in time and to allocate...
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7588086 |
Ported velocity tube for gas lift operations
A gas lift apparatus for use with a well bore sealing device includes a tubing string coupled to the well bore sealing device, a gas inlet port in the tubing string extending between the well bore...
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7565933 |
Non-aqueous foam composition for gas lift injection and methods for making and using same
A hydrocarbon drilling fluid system is disclosed including a hydrocarbon fluid and a foaming composition, where the foaming composition includes a polymer, a gelling agent and its cross-linking...
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7556099 |
Recovery process
A method for recovering hydrocarbons from a subterranean reservoir by operating a first injector-producer well pair under a substantially gravity-controlled recovery process, the first...
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7549478 |
Well jet device and the operating method thereof
Well jet device comprises a packer mounted on a pipe string provided with a central channel embodied therein and jet pump. The pump has channels supplying a working medium to a nozzle, removing the...
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7549477 |
System and method for unloading water from gas wells
A system, apparatus and method are useful for lifting water in a gas-producing wellbore through the application of a differential between pressure of the gas in the wellbore's gas-production...
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7549472 |
Method for increasing the production of hydrocarbon liquids and gases
A method for reducing or eliminating water block around a well bore of a well bore region in a reservoir is provided. The method comprises removing the water from around the well bore, injecting...
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7510012 |
Bubble breaker assembly
A method and system are disclosed for dispersing gas bubbles in a multiphase mixture in a production tubing in an crude oil production well or in a riser connected to such a well, by means of one...
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7510000 |
Reducing viscosity of oil for production from a hydrocarbon containing formation
Certain embodiments provide a method for treating a hydrocarbon containing formation. The method includes applying electrical current to one or more electrical conductors located in an opening in...
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7506690 |
Enhanced liquid hydrocarbon recovery by miscible gas injection water drive
In distinct embodiments, miscible gas is injected directly into crude oil within its formation, entering into solution within it at optimum pressures, adding desired solution gas saturation,...
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7500525 |
Gas well de-watering apparatus and method
A system and method for systematically and economically recovering formation liquids from the bottom of a petroleum well are disclosed. In a preferred embodiment, the system and method are passive...
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7497667 |
Jet pump assembly
A jet pump assembly for removing fluid from a well bore extending into a formation is disclosed. The jet pump assembly includes a jet pump interposed between a tubing string and a packer. The jet...
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7490675 |
Methods and apparatus for optimizing well production
Embodiments of the present invention generally relates to methods and apparatus for operating an artificial lift well. In one embodiment, the well is operated between an on cycle and an off cycle....
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7475731 |
Sand plunger
A plunger mechanism comprising radial peripheral holes extending outwardly from a center core to an outer surface through which a downhole gas may pass to clear an obstruction on the outer surface...
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7472747 |
Biological enhancement of hydrocarbon extraction
A method of microbial enhanced oil recovery for recovering oil from an oil-bearing rock formation is provided. The methodology uses a consortium of bacteria including a mixture of surfactant...
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7469748 |
Submersible pumping system
A technique is provided for pumping fluids in a subterranean wellbore. A submersible pumping system can be deployed in a wellbore for moving desired fluids within the wellbore. The pumping system...
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7464763 |
Method of injecting lift gas and gas lift flow control device
A method is disclosed for injecting lift gas or other fluid into a production conduit of an oil well via one or more wear resistant downhole gas lift flow control devices which each comprise: a...
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7464753 |
Methods and apparatus for enhanced production of plunger lift wells
A microcontroller system for oil and gas wells using a plunger lift device, which responds to the variations in well production and operation. The system requires minimal operator input, and is...
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7455109 |
Water flooding method
A method of recovering hydrocarbons from a porous subterranean hydrocarbon-bearing formation comprising: (a) feeding a first stream comprising a high salinity water to a first side of a...
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7451824 |
Downhole draw down pump and method
An apparatus for drawing down a fluid level in a wellbore. The apparatus comprises a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes...
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7451823 |
Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal
An apparatus incorporating a chemical seal and method for removing fluids from a well is disclosed. The chemical seal is created by a foaming agent which, when in the presence of gas and fluids...
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7448442 |
Pad type plunger
A plunger lift for a hydrocarbon well includes a piston that is dropped into the well and then moved upwardly to lift liquid to the surface from adjacent a hydrocarbon formation. The piston...
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7445048 |
Plunger lift apparatus that includes one or more sensors
A plunger lift apparatus includes wellhead equipment containing a receiver, a conduit extending from the wellhead equipment into a wellbore, and a plunger to be run through the conduit to a...
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7431093 |
Protection scheme and method for deployment of artificial lift devices in a wellbore
A protection system for an artificial lift device including but not limited to electrical submersible pump (ESP) and an electrical submersible progressing cavity pup (ESPCP). The artificial lift...
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7428929 |
Method and apparatus for lifting liquids from gas wells
A downhole apparatus and method for maintaining or reducing the level of liquids at the bottom of a gas producing well is described including a constriction or throat section, such as a Venturi, in...
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7404439 |
Horizontal drilling
A method and apparatus for recovering viscous hydrocarbons from a subsurface reservoir holding the same using an essentially horizontal well bore having a production inlet and containing steam...
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7401655 |
Downhole gas compressor
A method for producing gas from a well with low pressure involves running a bottom hole pressure test to graph a P-Q curve. The operator computes a frictional pressure drop due to friction of the...
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7370706 |
Gas lift valve for high pressure operation
A unique gas lift valve bellows assembly in which an internal piston incorporated within the bellows provides over travel prevention and over pressure protection during valve operation, independent...
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7367401 |
Ported velocity tube for gas lift operations
An apparatus for use with a packer set within a well bore comprises a first flow path providing fluid communication between the well bore above the packer and the well bore below the packer, and a...
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7363983 |
ESP/gas lift back-up
A well production system has a string of production tubing with a junction having two legs. A first leg is sealed to the casing by a packer located above well perforations. A submersible pump...
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7360602 |
Barrier orifice valve for gas lift
Gas lift valve designs and gas lift systems are described that feature a positive closure mechanism that is highly resistant to significant wear or damage that would result in fluid leakage. A...
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7331397 |
Gas drive fluid lifting system
A passive collection and pneumatic lifting system located in a well comprising a pneumatic tube, a fluid tube mounted within the pneumatic tube creating an annulus and a jet barrel chamber formed...
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7328749 |
Method and apparatus for accumulating liquid and initiating upward movement when pumping a well with a sealed fluid displacement device
Liquid is accumulated above fluid displacement device which is moveable and sealed within a production chamber defined by a production tubing, and upward movement of the fluid displacement device...
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7320364 |
Inhibiting reflux in a heated well of an in situ conversion system
Certain embodiments provide a method for treating a subsurface formation. The method includes using heaters to form a heated portion of the subsurface formation. A production conduit is used to...
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7311152 |
Gas operated pump for hydrocarbon wells
The present invention generally relates to an apparatus and method for improving production from a wellbore. In one aspect, a downhole pump for use in a wellbore is provided. The downhole pump...
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7311150 |
Method and system for cleaning a well bore
A method for extracting accumulated material from a well bore includes pressurizing gas recovered from the well bore and disposing an extraction string in communication with a sump. The sump is...
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7308952 |
Underbalanced drilling method and apparatus
A method of drilling well bore ( 20 ) through and below permeable formation ( 22 ) bearing such fluids as gas, oil, water wherein drill cuttings may be evacuated by formation fluid ( 23 ) being...
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7299879 |
Thermodynamic pulse lift oil and gas recovery system
An apparatus and process for lifting production fluids using the heat of compression of production gas to heat injection liquids. An apparatus and process for uninterrupted production using...
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7278489 |
Gas turbine for oil lifting
Gas turbine driven oil lifting device for increasing the quantity of oil obtained over a specified time (e.g. barrels per day) and the percentage of total amount obtained from oil-bearing...
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7278481 |
Method and system for producing an oil and gas mixture through a well
A method and system are provided for controlling the production of oil and gas in a well such that the well operates at the edge of gas coning. Thereto the flow rate and/or pressure of the produced...
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7275599 |
Positive pressure gas jacket for a natural gas pipeline
The present invention provides a method and apparatus whereby the intake pipeline running between the production chamber of a natural gas well and the suction inlet of an associated wellhead...
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7275592 |
Oil well pump apparatus
An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working...
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7249634 |
Apparatus for production in oil wells
An apparatus uses at least one injection pump ( 9 ) positioned in proximity to an undersea petroleum well ( 10 ) to provide hydraulic fluid for hydraulic pumping equipment positioned in the bottom...
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7228909 |
One-way valve for a side pocket mandrel of a gas lift system
Embodiments include providing a gas lift system comprising production tubing disposed within a wellbore, the production tubing capable of allowing fluid flow in a first direction from outside the...
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7219742 |
Method and apparatus to complete a well having tubing inserted through a valve
A method and apparatus for inserting a small diameter continuous hydraulic conduit or capillary tube down a well bore is presented. The methods and apparatus allow either the injection of chemicals...
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7191838 |
Method and apparatus for pumping wells with a sealing fluid displacement device
Liquid is lifted from a well by a fluid displacement device which moves within a production tubing and maintains a seal against the production tubing during movement. The fluid displacement device...
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7174959 |
Downhole separator system and method
According to one embodiment of the invention, a downhole separation method includes forming a main wellbore extending from a surface to a subterranean zone, disposing a production liner into the...
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