Class 166/105.2 - Carried by reciprocating plunger or plunger rod

Subclass of Class 166 - Wells
Definition: Devices in which the sediment collecting or deflecting device
No. of patents: 23
Last issue date: 10/21/2008

Number	Title	Issue Date
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 vary or adjust the bypass orifice to alter the flow of liquid through ...	10/21/2008
7428923	Top plunger adapter There is provided a top plunger adapter assembly for use in controlling sand fouling of an oil pump system wherein the oil pump system reciprocates between upstrokes and downstrokes within a barrel, and wherein the oil pump system includes as components a sucker rod...	09/30/2008
7377312	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 fluid is provided that can be pumped into the production tubing. A prime ...	05/27/2008
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; and a riser having at least one orifice. The riser is fastened to th...	11/06/2007
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 body has upper and lower fluid ports to allow the ingress and egress...	10/09/2007
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 fluid is provided that can be pumped into the production tubing. A prime ...	10/02/2007
7237617	Disengageable downhole tool A disengageable downhole tool (10) for use in the oil and gas industry. The tool can be decoupled from a work string to allow further tools to be operated from the work string on being run deeper into a well. The tool is then picked-up by the work string on r...	07/03/2007
7066255	Protection against loss of downhole tools A method of protecting against loss of downhole tools in wells, the method comprising the steps of making repeated use of a wire rope to suspend downhole tools in wells, the downhole tools being suspended from a downhole end of the wire rope, testing the integrity o...	06/27/2006
7008197	Debris evacuation apparatus and method for an oil pump A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located south of the seal, with the seal blocking northward travel of debris...	03/07/2006
6978830	Downhole latch A progressive cavity pump pumps liquid downhole to a lower formation past a packer set in a casing of a wellbore. The rotor of the pump is axially restrained by a bearing assembly spaced below the pump for controlling uphole reactive loading on the rotor. Preferably...	12/27/2005
6901999	Swabbing tool for wells A swabbing tool for wells that filters particulates from fluids passing through the swabbing tool. The swabbing tool comprises a mandrel, at least one swab cup on the mandrel, the mandrel and swab cup being arranged to allow fluids to pass from below to above the sw...	06/07/2005
6543543	Pump systems and methods A pumping system comprises a pump barrel that is adapted to be placed into a well casing. A plunger is reciprocatably positioned within the pump barrel and has an open top end, a bottom end, and a traveling valve at the bottom end. A connector is coupled ...	04/08/2003
6290475	Helical wiper for sucker rod pump A device that can be attached to the plunger of a sucker rod pump to extend the operational life of the pump when it is used for producing oil having a high sand content wipes sand from the wall of the barrel in which the plunger reciprocates and re-route...	09/18/2001
6250392	Pump systems and methods A pumping system comprises a pump barrel that is adapted to be placed into a well casing. A plunger is reciprocatably positioned within the pump barrel and has an open top end, a bottom end, and a traveling valve at the bottom end. A connector is coupled ...	06/26/2001
6186238	Assembly and method for the extraction of fluids from a drilled well within a geological formation The present invention includes an assembly and method to pump fluids produced by a drilled well within a geological formation having a borehole wall fixed by casing. The invention includes a subsurface pump having a stationary member and a mobile member. ...	02/13/2001
6145590	Device for removing sand from pump plungers A sand removal apparatus for use with an oil pumping apparatus in which a first sand remover is attached between a valve rod and a plunger of the oil pumping apparatus and a second sand remover is attached to a bottom of the plunger within the working bar...	11/14/2000
6135203	Downhole reciprocating plunger well pump A downhole reciprocating plunger pump includes an elongated tubular cylinder member which may be made of high-density polyethylene. A bottom inlet valve cage member is threadedly connected to the lower end of the cylinder and includes a reduced diameter p...	10/24/2000
6068052	No tap tool for downhole reciprocating pumps A tool which eliminates the need for "tapping" in downhole reciprocating pump applications is connectable between the last sucker rod of a sucker rod string and the downhole pump. The tool has a cylinder with a closed end and an internal annular seat prox...	05/30/2000
5634521	Valve assembly for downhole hydraulically actuated pump In a new valve assembly, the coacting abutting surfaces are imperfect due to normal fabrication techniques, and leakage occurs across these surfaces, which allows the control valve assembly to operate for a limited time while the engine parts are new, but...	06/03/1997
5431229	Method and apparatus for utilizing the pressure of a fluid column generated by a pump to assist in reciprocating the pump plunger The apparatus provides both a novel reciprocating pump for pumping fluid from a source by forming and moving a fluid column within a tubing and a method of using the pump. The pump, which is particularly suited for oil wells, uses the pressure generated b...	07/11/1995
5119874	Swab cup and swab assembly A swab assembly for use within a pump barrel includes a longitudinal swab bypass mandrel which has a top end connectable to a reciprocating member and at least one longitudinal bypass channel on its circumference and axially spaced stop shoulders at each ...	06/09/1992
4940092	Well clean out tool A well clean out tool installed in a drill string is operable to pump sand and debris from the well bore. A pump portion includes an elongate pump barrel having apertures extending through its side wall at the upper end which is attached at its bottom end...	07/10/1990
4570718	Oil level sensor system and method for oil wells A system for controlling production in an oil well comprises a controller for activating the means for causing reciprocation of the sucker-rods; a sensing means secured to the outer surface of the production tubing near the lower end thereof comprising a ...	02/18/1986

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Class 166/105.2 - Carried by reciprocating plunger or plunger rod