Class 166/108 - Piston actuates foot valve

Subclass of Class 166 - Wells
Definition: Devices in which a pump or plunger piston is mechanically
No. of patents: 29
Last issue date: 04/12/2011

Number	Title	Issue Date
7921908	Gas restrictor for horizontally oriented pump A downhole pumping system includes a submersible pump assembly having a pump and a motor, and an inlet apparatus operably coupled to the submersible pump assembly. The inlet apparatus includes a tubular housing for connection to an intake of the pump, the housing ha...	04/12/2011
7647962	Assembly and method of alternative pumping using hollow rods without tubing Assembly and method for extracting fluids, preferably crude oil, from a drilled well within a geological formation by means of reciprocating pumping with hollow sucker rods. The assembly includes: a) a stationary bottom set that attached to the casing at the desired...	01/19/2010
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 is initiated to pump liquid and gas from a well, by different magnitud...	02/12/2008
7328748	Thermal actuated plunger A downhole plunger for a gas/oil well comprises a valve to regulate fluid flow past the plunger and a thermal actuator to control the valve. The thermal actuator of the disclosed device enables the valve to open and close aperatures without relying on the physical i...	02/12/2008
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 pipe mounted in the barrel, an inner sleeve, which is connected to the ...	01/08/2008
7314080	Slidable sleeve plunger An improved plunger lift mechanism comprises an internal hollow body having bypass orifices that, when exposed, allow fluid to pass through during plunger descent in a downhole tube to the bottom of a production well. A slidable sleeve slides along the hollow body t...	01/01/2008
7314081	Pumping from two levels of a pool of production fluid, and one way valve therefore A method of pumping upper production fluid from an upper level of an underground pool of production fluid and pumping lower production fluid having a higher concentration of sand from a lower level during a single pump cycle comprises providing a dual action recipro...	01/01/2008
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. ...	11/06/2007
7251983	Secondary containment system and method A pump housing that contains a pump that draws fuel from an underground storage tank containing fuel to deliver to fuel dispensers in a service station environment. The pump is coupled to a double-walled fuel pipe that carries the fuel from the pump to the fuel disp...	08/07/2007
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 is moved up and down within the production tubing between the well bo...	03/20/2007
7134503	Wellbore pump The wellbore pump of the present invention comprises a plunger having passage means which may be open or closed by a valve operated by a piston which is biased in the open position by a spring of selected strength such that the wellbore pressure may overcome the spr...	11/14/2006
7093341	Method of making an axial piston pump barrel with a cast high pressure collection cavity In an axial piston pump, a plurality of reciprocating pistons are at least partially positioned within a barrel. The barrel includes a ring shaped high pressure collection cavity that is positioned between the piston chambers and the outlet of the pump. In order to ...	08/22/2006
7080690	Method and apparatus using traction seal fluid displacement device for pumping wells Liquid is lifted from a well by a traction seal fluid displacement device which is moveably positioned within the production tubing, and which maintains a seal during movement. The traction seal device comprises a resilient flexible toroid shaped structure within ou...	07/25/2006
7040401	Automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus An automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus. In one configuration, arrival of a plunger is sensed as the plunger ascends from the wellbore through the production tubing and a signal is sent to a controller. ...	05/09/2006
7021387	Wellbore pump The wellbore pump of the present invention comprises a plunger having passage means which may be open or closed by a valve operated by a piston which is biased in the open position by a spring of selected strength such that the wellbore pressure may overcome the spr...	04/04/2006
7017671	Mud saver valve A mud saver valve being operable in conjunction with a top drive unit to retain mud in the top drive unit when a tubular is disconnected therefrom. The valve utilizes a spring-loaded piston to control the flow of mud or other fluid onto the work area and environment...	03/28/2006
6907926	Open well plunger-actuated gas lift valve and method of use A system is provided for unloading accumulated liquids and enhancing the recovery of gas from a reservoir having diminished pressure. An annulus between a tubing string and casing is isolated by a packer and continually pressurized with a slipstream of compressed ga...	06/21/2005
6817409	Double-acting reciprocating downhole pump A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump first comprises a plunger. The plunger is reciprocated axially within the wellbore by a linear actuator, such as a submersible electrical pump, in ...	11/16/2004
6705404	Open well plunger-actuated gas lift valve and method of use A system is provided for unloading accumulated liquids and enhancing the recovery of gas from a reservoir having diminished pressure. An annulus between a tubing string and casing is isolated by a packer and continually pressurized with a slipstream of compressed ga...	03/16/2004
6695053	Bailer discharging device and method of using thereof An apparatus for discharging sample fluid from a bailer with a ball-joint and a method of using thereof. The apparatus has a body, an interior and an exterior, a top opening and a bottom opening, and a lip disposed around the top opening. The bottom of th...	02/24/2004
6637510	Wellbore mechanism for liquid and gas discharge A wellbore pump comprises a plunger having a passage which may be open or closed by a valve operated by a piston which is biased in the open position by a spring of selected strength such that the wellbore pressure may overcome the spring to close the val...	10/28/2003
6347668	Relievable check valve assembly for oil wells and water wells A relievable check valve assembly having various trigger forms for oil wells and water wells adapted to control the liquid flow when inserted tubing is being removed from a well....	02/19/2002
6176309	Bypass valve for gas lift plunger A bypass valve for a plunger in a plunger lift system in an oil and gas well is disclosed. The valve has a valve body, a piston and a spring. The pressure differential across the piston keeps the valve closed during the upstroke of the plunger. The spring...	01/23/2001
5915475	Down hole well pumping apparatus and method A method and apparatus for pumping formation liquids provides a reciprocating down hole pump on the end of a coiled tubing string. In one embodiment, one fluid flow path is provided through the inside of the coiled tubing and another flow path is provided...	06/29/1999
5425416	Formation injection tool for down-bore in-situ disposal of undesired fluids A formation injection tool disposable in a casing of a production well includes an intake flow control assembly, a seal mechanism located below the intake flow control assembly, and a discharge flow control device located below the seal mechanism. The int...	06/20/1995
5062480	Self actuated intake valve assembly for insert subsurface reciprocating pumps The present invention is drawn to an inlet valve assembly for a subsurface sucker rod operated reciprocating piston pump and, more particularly an inlet valve assembly which is locked in its closed position when the pump is in its unanchored, non-pumping ...	11/05/1991
4848454	Downhole tool for use with a ball and seat traveling valve for a fluid pump A downhole tool for use with a ball and seat travelling valve associated with a moveable plunger includes a means for causing relative movement between the upper and lower housings forming the downhole tool, whereby a bumping force may be imparted to the ...	07/18/1989
4782895	Pumped oil well bottom safety valve An apparatus for automatically closing a bottom safety valve in a pumped oil well in case of a cessation of pumping, and reopening the valve when pumping resumes. A conventional valve pump is installed in the production tube. A channel, which is connected...	11/08/1988
4776401	Foot valve for pumping wells Methods of and apparatus for plugging a well below a rod pump to permit bleeding off the pressure thereabove so that the pump can be removed from the well for replacement or repairs and reinstalled for further pumping operations, the pump being connected ...	10/11/1988

PatentStorm

Quotables

PatentStorm News

Class 166/108 - Piston actuates foot valve