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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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7607903 |
Stator tube removal and installation device
An apparatus for removing a stator tube from a position about a rotor of a progressing cavity pump is provided. The apparatus includes an actuator assembly having a base and a piston which is...
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7597143 |
Method and apparatus for logging downhole data
A downhole plunger for oil and gas wells comprises an electronic ambient environmental sensor via a cargo bay. Although the sensor is preferably a downhole time, temperature, pressure and flow...
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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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7584784 |
Reciprocating pump drive apparatus
A reciprocating drive apparatus for connection to a top end of a rod swing to drive a downhole pump located in a well includes a plate adapted to be fastened to a top end of a well head assembly of...
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7584783 |
Surface activated downhole spark-gap tool
A spark-gap tool includes a plurality of electrodes, a mandrel, transductive element(s), and a force transmission configuration. Upon relative movement between components a physical distortion of...
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7562701 |
Eccentric wellhead hydraulic drive unit
A wellhead hydraulic drive unit to operate various styles of downhole pumps, including a hydraulic cylinder having a piston positioned therein for reciprocation within the cylinder; hydraulic fluid...
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7556100 |
Apparatus and method for delivering chemicals into an underground well
In some embodiments, a method of delivering at least one chemical into an underground well equipped with a reciprocating plunger includes retaining the plunger above the well after the well is...
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7533730 |
Variable and slow speed pumping unit
A pumping unit is provided with a hydraulic drive unit. The drive includes a hydraulic motor attached to a driven sheave that, through reduction gears, drives a drive shaft and crank arm that...
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7530800 |
Rotary drivehead for downhole apparatus
A drivehead for driving a drive string of a rotary pump or motor includes a bearing housing including lubricating fluid therein, a driveshaft extending through the bearing housing and connectable...
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7530392 |
Method and system for development of hydrocarbon bearing formations including depressurization of gas hydrates
A method and system for the production of a gas hydrate including the steps of drilling into a subterranean gas hydrate formation and at least partially depressurizing the gas hydrate formation to...
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7530391 |
Seal section for electrical submersible pump
A seal section for a submersible well pump assembly has a housing for connection between a pump and a motor. A central radial bearing support rotatably supports a drive shaft and defines upper and...
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7523783 |
Internal shock absorber plunger
A plunger mechanism has an internal shock absorber apparatus that operates to absorb shock during plunger fall and rise, thereby promoting a more reliable plunger lift system. The present apparatus...
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7516796 |
Piston pump assembly with flexible riser pipe
A pump for pumping liquid from a well having a continuous flexible riser pipe that does not have a coil memory and a flexible actuating rod disposed within the flexible riser pipe. A piston valve...
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7503387 |
Method of logging a well equipped with a rod pump
In one embodiment, the present invention includes a method of logging a rod-pumped well without removing the production string of tubing ( 30 ). The logging is accomplished with a soft-coated cable...
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7481281 |
Systems and methods for the drilling and completion of boreholes using a continuously variable transmission to control one or more system components
Systems and methods for drilling a borehole are provided. One system includes a continuously variable transmission. An input shaft of the continuously variable transmission is coupled to a power...
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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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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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7458787 |
Apparatus and method for reducing gas lock in downhole pumps
The pump has a barrel with vent ports located therein and a plunger that reciprocates inside the barrel. The barrel has a standing valve and the plunger has a traveling valve. The plunger has a...
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7458786 |
Oil well pumping unit and method therefor
An improved oil well pumping unit and method thereof configured for use on new or existing oil wells. The present invention is for mechanical operation of the subsurface pump and replaces existing...
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7448443 |
Variably operable oil recovery system
A variably operable oil recovery system having a variable motor and reducer in mechanical communication with one another where each shares a common axis of rotation. The reducer receives the drive...
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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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7438125 |
Variable orifice bypass plunger
A plunger mechanism comprises an adjustable bypass valve. Depending on well parameters, a user may desire to adjust the descent rate of a plunger in service. The present device allows the user to...
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7419007 |
Retrievable downhole pumping system
A pumping system 10 is provided for pumping fluid from a downhole well to the surface through a production tubing string well. A rotatable drive rod 18 extends from the surface to power the...
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7409997 |
Electric submersible pump with specialized geometry for pumping viscous crude oil
A centrifugal pump has impellers for pumping low flow, high viscous materials. The impellers have high exit angles greater than 30 degrees and preferably greater than 50 degrees. The impellers and...
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7395865 |
Gas lift plunger arrangement
A plunger in a plunger lift system in an oil and gas well includes shaped grooves spaced along the plunger body, angled fins or below the grooves, an elongated interior cavity open at the bottom,...
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7383878 |
Multi-part plunger
An improved plunger mechanism apparatus to increase well flow production levels. Efficiency of well flow is increased by a two-piece plunger assembly apparatus that is mechanically latched during...
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7373971 |
Pump jack and method of use
An electromagnetic ram for use in artificially lifting fluid from a well and in particular an oil well. The disclosure also teaches a method and system employing the ram. The use obviates existing...
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7357186 |
Recirculation gas separator
A submersible pumping system includes a pump, a motor that drives the pump and a separator assembly. The separator assembly is for separating gas from the fluid and includes an intake and a vent...
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7343967 |
Well fluid homogenization device
A well fluid homogenization device for use in a pumping system configured to recover fluids from a well includes a central hub and a plurality of posts extending from the central hub. The well...
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7337854 |
Gas-pressurized lubricator and method
Embodiments of the present invention provide methods and apparatus for reducing kinetic energy of a plunger within a plunger lift system. In one aspect, a lubricator is provided at a surface of a...
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7337851 |
Rotating stuffing box with split standpipe
A system comprising a top mounted rotating stuffing box is provided for use with downhole pump (e.g., Progressing Cavity Pump) applications. The system also includes a split standpipe configuration...
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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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7316270 |
Oil pumping unit using an electrical submersible pump driven by a circular linear synchronous three-phase motor with rare earth permanent magnet
An oil pumping unit is disclosed to include a motor, which has a mover that moves alternately up and down when the motor is electrically connected, and a pump, which has a barrel, an oil suction...
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7316268 |
Method for conditioning wellbore fluids and sucker rod therefore
Invention refers to a method for conditioning wellbore fluids and to a sucker rod to accomplish the method used in the field of petroleum production. The method the invention refers to involves...
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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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7306031 |
Tubing string rotator and method
A tubing string rotator for rotating a tubing string in a well having a downhole pump. The tubing string rotator includes a housing having a first portion and a second portion. At least the second...
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7290608 |
Method and system for pumping in an oil well
An effluent pumping method and system include a pump having a rotor and a stator, the rotor being fastened by a first end to a tubular driving string; a device for driving the string into rotation;...
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7290602 |
Internal shock absorber bypass plunger
A bypass plunger having one or more internal shock absorbing elements and a variety of bypass orifice options is disclosed.
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7278476 |
Retrievable stress and torque reducing tool
A stress and torque reducing tool has a plunger that reciprocates inside of a body. The tool is connected between the pump and the sucker rod string and reduces stress transmitted therebetween. The...
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7275590 |
Submersible pump
A submersible pump for attachment to the lower end of a well pipe discharge tube for insertion in liquid includes a stationary collecting tube for collecting the liquid and an upward and downward...
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7258164 |
Pumping system for oil wells
A pumping system ( 13 ) for oil wells ( 1 ) comprises a pump ( 20 ) immersed at the bottom of the well ( 4 ) and a flow-meter ( 32 ) associated with the pump ( 20 ), the immersed pump ( 20 ) being...
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7255175 |
Fluid recovery system and method
A fluid recovery system 10 for collecting formation fluid at the surface of a well 12 includes a downhole jet pump 20 and a surface diaphragm pump 40 having a plurality of diaphragms 42 ....
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7252148 |
Plunger actuated pumping system
Methods and apparatus for pumping fluids from a well utilizing a submersible pumping system. In one embodiment, the pump comprises a pump body operable to be disposed within tubing within a well....
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7232524 |
Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas drive
Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the...
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7225878 |
Methods and apparatus for production of hydrocarbons
Apparatus and methods for producing fluids from a well and for controlling the production of fluids from multiple wells, particularly from a remote location. The well is provided with a winch/cable...
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7219737 |
Subsea wellhead arrangement for hydraulically pumping a well
A subsea well pumping system for installing and retrieving a hydraulically actuated down hole pump employed within the tubing suspended within casing extending from above a seabed, the system...
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7219725 |
Instrumented plunger for an oil or gas well
A plunger for use in a plunger lift system of an oil or natural gas well includes one or more sensor assemblies, each including one or more sensors for measuring various physical and operational...
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7201231 |
Apparatuses and methods for deploying logging tools and signalling in boreholes
The apparatus includes a pump for circulating pressurized fluid in a wellbore. A control device controls the pump which a conduit interconnects to the wellbore. A downhole transducer detects...
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