Float Controlled Valve Patents (Class 166/54)
  • Patent number: 9284809
    Abstract: An apparatus and method for controlling fluid flow in a blowout preventer. In one embodiment, an apparatus for connecting fluid lines includes a socket fluid connector and a plug fluid connector. Each connector includes a flow channel. The plug fluid connector is detachably connectable to the socket fluid connector at a connection end of the plug and socket fluid connectors such that the flow channels align. Each of the socket and plug fluid connectors includes a check valve in the flow channel. The check valve is configured to prevent fluid flow through the connector flow channels while the plug and socket fluid connectors are not connected, and to enable bidirectional fluid flow through the connector flow channels while plug and socket fluid connectors are connected.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 15, 2016
    Assignee: Cameron International Corporation
    Inventor: Ronald W. Webb
  • Patent number: 9140089
    Abstract: A stabilization device is for a wellhead wherein an upper portion of a wellhead casing extends up above a seabed, the upper wellhead casing portion being sideways supported in a suction substructure. A blowout preventer extending up from the upper portion of the wellhead casing is provided with multiple supporting elements abutting supportingly an edge portion of an end cover on the suction substructure. A method is for stabilizing a wellhead wherein an upper portion of a wellhead casing extends up above a seabed and is sideways supported in a suction substructure surrounding the wellhead casing portion and extends downward in an uncompacted material.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: September 22, 2015
    Assignee: NeoDrill AS
    Inventor: Harald Strand
  • Patent number: 8967250
    Abstract: A well pumping and control system that is capable of operating in a wide range of ambient conditions. The system automatically maintains fluid level in a fluid storage vessel, while protecting the pump and generator from operating in conditions outside preset operating parameters to prevent premature failure and reduce repair. By operating to pump fluid only when preset operating conditions exist, e.g. low fluid level, ambient temperature, etc., the system reduces labor, fuel, and maintenance operating costs to the owner, improves well pumping reliability and production, reduces generator fuel consumption, reduces emissions, and conserves ground water or liquid hydrocarbons, whichever is being pumped into the fluid storage vessel by the system.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 3, 2015
    Inventor: Mike Lisk
  • Publication number: 20150013978
    Abstract: An inflow control valve for controlling the flow of fluids into a generally horizontal production well located in an underground reservoir, where the production well has a well casing, a production tubing located within the casing and an annulus between the production tubing and the casing. The inflow control valve has a valve body having a threaded portion for connecting the valve body to the production tubing, a through bore for connecting the valve body to an inside bore of said production tubing and an outside surface. The valve also has at least one inlet passageway extending through the valve body between the outside surface and said through bore and an inlet opening on said at least one inlet passageway formed on the outside surface of the valve body.
    Type: Application
    Filed: December 14, 2012
    Publication date: January 15, 2015
    Inventor: John NENNIGER
  • Patent number: 8893795
    Abstract: A wellbore chemical treating system include a storage vessel for containing a treating chemical. A chemical dispenser is in fluid communication between an outlet of the vessel and a well for selectively controlling the flow of the chemical from the vessel to the well. A liquid level sensor is disposed in the storage vessel. A controller is in signal communication with the liquid level sensor and is configured to operate the chemical dispenser. The controller is configured to adjust an operating time of the chemical dispenser based on changes in a liquid level measured by the liquid level sensor over a selected period of time.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 25, 2014
    Inventor: Robert N. Ayres
  • Patent number: 8839849
    Abstract: A method for producing fluid from a subterranean formation includes configuring a body to at least partially fill with a selected fluid; and actuating a flow restriction element using the body. The selected fluid may be water. An apparatus for controlling flow of a fluid into a wellbore tubular may include a selectively buoyant body, and a flow restriction element responsive to a movement of the selectively buoyant body. The selectively buoyant body includes a membrane configured to block a flow of hydrocarbons into the selectively buoyant body. The flow restriction element may include a flapper, a sliding sleeve, and a poppet valve. The body may be at least partially filled with a permeable material, which includes, but is not limited to, open-cell foam, reticulated metal foam, shaped sintered powder and capillary tubes.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: September 23, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Randall V. Guest, Stephen L. Crow, Martin P. Coronado
  • Patent number: 8820404
    Abstract: A well watchman pumping and control system that is capable of operating in a wide range of ambient conditions. The system automatically maintains water level in a water storage vessel, while protecting the pump and generator from operating in conditions outside preset operating parameters to prevent premature failure and reduce repair. By operating to pump water only when preset operating conditions exist, e.g. low water level, ambient temperature, etc., the system reduces labor, fuel, and maintenance operating costs to the owner, improves well pumping reliability and production, reduces generator fuel consumption, reduces emissions, and conserves ground water.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 2, 2014
    Inventor: Mike Lisk
  • Publication number: 20140110098
    Abstract: A flexible wellbore casing guide having a tubular body positioned at an end of a wellbore casing having a lower stiffness than the wellbore casing whereby the casing guide more easily deflects as the wellbore casing is inserted into the wellbore without causing undue stress on a wellbore formation.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 24, 2014
    Applicant: WWT INTERNATIONAL, INC.
    Inventors: Sarah Mitchell, Duane Thomas Bloom
  • Publication number: 20140090836
    Abstract: A safety valve for downhole use in a well comprises a valve body having a longitudinal bore for fluid flow; a bore closure assembly positioned to seal about a longitudinal cable within the bore; and a control assembly positioned and configured to actuate in response to a change in a control signal condition.
    Type: Application
    Filed: May 25, 2012
    Publication date: April 3, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Frank Giusti
  • Patent number: 8550159
    Abstract: This invention provides for an apparatus that controls a liquid level down-hole of a hydrocarbon producing well by physically monitoring the liquid level down-hole having a down-hole liquid level measurer and a signal device connected to the liquid level measurer that causes a pump to adjust its current liquid output based on the liquid level down-hole as measured by the down-hole liquid level measurer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: October 8, 2013
    Assignee: CNX Gas Company LLC
    Inventor: Joseph M. Fink
  • Patent number: 8534355
    Abstract: A valve (30) for a production liner (12) in connection with the extraction of oil and gas, arranged to automatically shut of the flow of fluid into the production liner (12) in the event of a gas break-through, whereby the valve (30) comprises a valve seating (32) containing at least one central inflow channel (34) and one or more outflow channels (36, 38) from the valve (30). The valve (30) is constructed with a curved design equal to the shape of the outer diameter of the production liner (12), and is placed on the outside of the production liner (12), and in that a rectangular shut off disk (40) with the same curving is arranged in the valve (30), in the flowing path of the liquid flow, to cause a high velocity flow over the shut off disk's surface (40a) against the valve seat (32), wherein the shut off disk (40) is adapted to seal against said valve seat (32) dependant on the differential pressure being produced by the viscosity of the passing flow.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: September 17, 2013
    Assignee: Statoil Petroleum AS
    Inventor: Eilif H. Johannesen
  • Patent number: 8413725
    Abstract: The present application is directed to a subsea separator. The subsea separator suitably comprises (a) a housing having an inlet for receiving a fluid mixture, a non-gaseous fluid outlet located along the housing at a point lower than the inlet, and a gas outlet located along the housing at a point higher than the inlet; (b) a deflector means located within the housing for acting on fluid entering the housing; and (c) a sealing means in communication with the gas outlet for preventing non-gaseous fluid from exiting the housing through the gas outlet, the sealing means being operationally configured to open and seal the gas outlet based on the volume of non-gaseous fluid within the separator; wherein the separator is operationally configured to operate under a differential pressure including a greater external hydrostatic pressure than internal pressure and vice versa.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 9, 2013
    Inventors: David C Wright, Jeffery Wilbert Dufrene
  • Patent number: 8387689
    Abstract: This invention provides for an apparatus that controls a liquid level down-hole of a hydrocarbon producing well by physically monitoring the liquid level down-hole having a down-hole liquid level measurer and a signal device connected to the liquid level measurer that causes a pump to adjust its current liquid output based on the liquid level down-hole as measured by the down-hole liquid level measurer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 5, 2013
    Assignee: CNX Gas Company LLC
    Inventor: Joseph M. Fink
  • Publication number: 20120325460
    Abstract: A well watchman pumping and control system capable of operating in a wide range of ambient conditions is described. The system automatically maintains water level in a water storage vessel, while protecting the pump and generator from operating in conditions outside preset operating parameters to prevent premature failure and reduce repair. By operating to pump water only when preset operating conditions exist, e.g. low water level, ambient temperature, etc., the system reduces labor, fuel, and maintenance operating costs to the owner, improves well pumping reliability and production, reduces generator fuel consumption, reduces emissions, and conserves ground water.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 27, 2012
    Inventor: Mike Lisk
  • Patent number: 8235111
    Abstract: This invention provides for an apparatus that controls a liquid level down-hole of a hydrocarbon producing well by physically monitoring the liquid level down-hole having a down-hole liquid level measurer and a signal device connected to the liquid level measurer that causes a pump to adjust its current liquid output based on the liquid level down-hole as measured by the down-hole liquid level measurer.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: August 7, 2012
    Assignee: CNX Gas Company LLC
    Inventor: Joseph M. Fink
  • Patent number: 8016033
    Abstract: In one embodiment, a method for drilling a wellbore includes injecting drilling fluid into a top of a tubular string disposed in the wellbore at a first flow rate. The tubular string includes: a drill bit disposed on a bottom thereof, tubular joints connected together, a longitudinal bore therethrough, and a port through a wall thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The cuttings and drilling fluid (returns) flow to the surface via an annulus defined between the tubular string and the wellbore. The method further includes rotating the drill bit while injecting the drilling fluid; remotely removing a plug from the port, thereby opening the port; and injecting drilling fluid into the port at a second flow rate while adding a tubular joint or stand of joints to the tubular string. The injection of drilling fluid into the tubular string is continuously maintained between drilling and adding the joint or stand to the drill string.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: September 13, 2011
    Assignee: Weatherford/Lamb, Inc.
    Inventors: David Iblings, Thomas F. Bailey, Ram K. Bansal, Adrian Steiner, Michael Lynch, Simon J. Harrall
  • Patent number: 7828065
    Abstract: A system that is usable with a well includes a closed loop network that is located entirely downhole in the well. The system also includes valves that are located in a wellbore of the well and are interconnected by the closed loop network. Each valve is associated with a different isolated region of the wellbore and is adapted to regulate a flow through the valve based at least in part on a flow condition of the isolated region associated with the valve and a flow condition of each of the other isolated regions.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: November 9, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Donald W. Ross, Nashat Nustafa Jamil Hassan, Muhammad Shafiq, Mohammad Athar Ali, Anwar Ahmet Maher Assal, Yasser Mahmoud El-Khazindar
  • Publication number: 20090025930
    Abstract: In one embodiment, a method for drilling a wellbore includes injecting drilling fluid into a top of a tubular string disposed in the wellbore at a first flow rate. The tubular string includes: a drill bit disposed on a bottom thereof, tubular joints connected together, a longitudinal bore therethrough, and a port through a wall thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The cuttings and drilling fluid (returns) flow to the surface via an annulus defined between the tubular string and the wellbore. The method further includes rotating the drill bit while injecting the drilling fluid; remotely removing a plug from the port, thereby opening the port; and injecting drilling fluid into the port at a second flow rate while adding a tubular joint or stand of joints to the tubular string. The injection of drilling fluid into the tubular string is continuously maintained between drilling and adding the joint or stand to the drill string.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 29, 2009
    Inventors: David Iblings, Thomas F. Bailey, R. K. Bansal, Adrian Steiner, Michael Lynch, Simon J. Harrall
  • Patent number: 7409999
    Abstract: A system and method for controlling inflow of fluid into a production string. In aspects, the invention provides a downhole sand screen and inflow control device with a gas or water shut-off feature that can be operated mechanically or hydraulically from the surface of the well. The device also preferably includes a bypass feature that allows the inflow control device to be closed or bypassed via shifting of a sleeve. In embodiments, the flow control device can be adaptive to changes in wellbore conditions such as chemical make-up, fluid density and temperature. Exemplary adaptive inflow control devices include devices configured to control flow in response to changes in gas/oil ratio, water/oil ratio, fluid density and/or the operating temperature of the inflow control device. In other aspects of the present invention, inflow control devices are utilized to control the flow of commingled fluids drained via two or more wellbores.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: August 12, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Knut Henriksen, Craig Coull, Erik Helsengreen
  • Publication number: 20080135225
    Abstract: The present invention provides for high volume flow from a well. A retrievable formation isolation valve allows high volume flow through the remaining casing or tubing. Alternatively, a large bore valve configuration that is not retrieved, but remains as part of the casing, can be used. The present invention also includes methods to allow for high volume flow using retrievable isolation valves or large bore valves.
    Type: Application
    Filed: February 19, 2008
    Publication date: June 12, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dinesh R. Patel, David A. Hill, Jabus T. Davis, David T. Lamont, Charles D. Harding
  • Patent number: 7347255
    Abstract: A device for detecting the presence of water in a product-only hydrocarbon pump system particularly used for the removal of subterraneous hydrocarbons from a remediation site through a well. The device comprises a sealed float switch chamber, positioned either upstream or downstream from the hydrocarbon pump, wherein when a threshold amount of water is present in the hydrocarbon product being pumped through the float chamber, a switch is actuated by the float mechanism, electrically signaling an alarm, shutting off the power supply to the pump, or further activating a system controller or log.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: March 25, 2008
    Assignee: QED Environmental Systems, Inc.
    Inventors: David A. Fischer, Craig A. Bamm
  • Patent number: 7290606
    Abstract: Devices and methods for control flow of formation fluids respect to one or more selected parameter relating to the wellbore fluid. In one embodiment, a flow control device for controlling fluid flow into the production tubular uses a flow restriction member that is actuated by a character change of the formation fluid, such as liquid to gas or oil to water. The flow restriction member can be sensitive to a change in density of the formation fluid. The flow restriction member is passive, self-regulating and does not need any power source or control signal to control fluid flow. In one embodiment, the flow control device automatically rotates into a predetermined orientation upon being positioned in the wellbore. A seal disposed on the flow control devices expands into sealing engagement with an enclosure after the flow control device assumed the desired predetermined position.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: November 6, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: Martin Coronado, Steve Crow, Knut H. Henriksen
  • Patent number: 7219725
    Abstract: 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 conditions during the operation of the well. The data acquired from the sensors is stored in memory within the sensor assemblies and downloaded to the plunger lift system controller when the plunger is located in the catch/lubricator. The data can then be analyzed by the controller or other computer to vary the well's operating parameters to maximize the well's operating efficiency and the data can be used in reservoir management, such as transient testing, reservoir modeling and interference testing.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: May 22, 2007
    Inventor: Christian Chisholm
  • Patent number: 7185706
    Abstract: An arrangement for restricting the inflow of formation water from an underground formation to a hydrocarbon producing well, where, between the underground formation and a production tubing (38) located in the well, there is disposed at least one flow chamber (3, 33) connected to the production tubing (38), the flow chamber (3, 33), preferably via a filter (2) in one portion, being open to inflow of formation fluid and in communication with the production tubing (38) via at least one opening (7, 32), and where the flow chamber (3, 33) is provided with at least one free-floating body (4, 34) with approximately the same density as the formation water, the at least one body (4, 34) being designed by means of the closing of at least one opening (32) or choking, to reduce the inflow of formation water to the production tubing (38).
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: March 6, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Rune Freyer
  • Patent number: 7100710
    Abstract: The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are described that provide for the efficient installation of a cemented steel cased well wherein the drill string and the drill bit are cemented into place during one single drilling pass down into the earth. Different physically alterable bonding materials may be substituted for cement. A one-way cement valve is installed near the drill bit of the drill string that allows the cement to set up efficiently under ambient hydrostatic conditions while the drill string and drill bit are cemented into place during one single drilling pass into the earth.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: September 5, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: William Banning Vail, III
  • Patent number: 7013997
    Abstract: The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are described that provide for the efficient installation of a cemented steel cased well wherein the drill string and the drill bit are cemented into place during one single drilling pass down into the earth. Methods of operation are described wherein at least one geophysical parameter is measured with a geophysical parameter sensing member located within the drill string. A one-way cement valve is installed near the drill bit of the drill string that allows the cement to set up efficiently under ambient hydrostatic conditions while the drill string and drill bit are cemented into place during one single drilling pass into the earth.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: March 21, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: William Banning Vail, III
  • Patent number: 6520259
    Abstract: The present invention presents an improved method and apparatus for liquid entrainment by a two-phase flow system. The present invention provides an apparatus that recovers liquids by entrainment without experiencing deadhead conditions, choking or dry recovery due to fluctuations in the elevation of the liquid level. The apparatus provides self-regulated two-phase recovery of gas and liquid by construction design, thus eliminating the need for manual adjustments or electronically controlled devices. The enhanced venturi effects of the present invention enhance liquid lift while maintaining the gas recovery point above the liquid at all times to eliminate deadhead conditions.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: February 18, 2003
    Inventors: Jeremy Mathew Rasmussen, James R. Burns, David Lawrence Schroder, Daniel William Oberle
  • Patent number: 6367547
    Abstract: In accordance with the present invention, a downhole separation tool is provided which utilizes a downhole separation chamber with a series of fluid regulators responsive to a formation fluid and constituent components for separate desirable formation yields from the less desirable yields prior to lifting the fluids to the surface. The separation chamber has an input for the formation fluid, a production output, and a disposal output, in a tree arrangement according to the density order of the fluids in the separation chamber. The input flow regulator is coupled to the separation chamber input, the production regulator is coupled to the production output, and the disposal regulator is coupled to the disposal output. Each of the regulators are responsive to a fluid density of the formation fluid, first constituent and remainder constituent, accordingly, to regulate the flow of the respective fluid.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: April 9, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Darrin N. Towers, Kenneth L. Schwendemann
  • Patent number: 5873410
    Abstract: Installation for pumping a liquid coming from an underground source, comprising a well (10) extending from the surface (12) towards the liquid source (14), the well having a chamber (40) extending substantially over its entire length, at least one tubing (18) passing through the chamber and communicating with the latter, and a set of valves (34), which is intended for putting the chamber selectively in communication with a gas source at a first pressure (36), making it possible for the liquid coming from the source to fill the chamber, and a gas source at a second pressure (38) higher than the first pressure, in order to empty the chamber, the liquid being delivered towards a first outlet (30) by flow through the tubing, characterized in that the said installation comprises, furthermore, a shutter (52), mounted in the tubing (18), and a second conduit (58; 70) leading to a second outlet (74), the shutter being capable of reacting to the density of fluid surrounding it, so that it can deliver a first liquid to
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: February 23, 1999
    Assignee: Elf Exploration Production
    Inventors: Michel Iato, Alain Viard
  • Patent number: 5333684
    Abstract: A tool (400) is disclosed for use in recovering gas from a gas well without the production of water as well. The tool (400) uses a member, such as plurality of vertically stacked balls (430) which are lighter than water to close a channel 422 when the water level (432) exceeds a certain level. As gas accumulates about the balls, the water level 432 will be moved downwardly, eventually causing the balls to move out of engagement with the seal surface (424), opening the channel (422) for passage of the gas upwardly for recovery. As the water level rises, the balls will again seal against the seal surface (424).
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: August 2, 1994
    Assignee: James C. Walter
    Inventors: James C. Walter, Billy R. Bruton, George E. Walter, Jr.
  • Patent number: 5307872
    Abstract: An automatic choke has two piston-cylinder assemblies mounted within a housing having an inlet and an outlet. The piston-cylinder assemblies are connected in a closed hydraulic loop configuration. One piston-cylinder assembly is responsive to pressures at the inlet and the other piston-cylinder assembly controls valve at the outlet.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: May 3, 1994
    Assignee: Texaco Inc.
    Inventor: Jonathan C. Noyes
  • Patent number: 5301749
    Abstract: There is provided a dual pump floating layer recovery apparatus for pumping a floating layer of contaminant out of a well. The apparatus comprises an upper pump and a lower pump. The lower pump creates a cone of depression which increases the amount of the floating layer within the well. The upper pump pumps the contaminant from the well or cone of depression. The upper and lower pumps preferably are gas-actuated pumps. The lower pump preferably includes an automatic switching device to activate the lower pump upon sensing a predetermined amount of fluid within the pump. A gas conduit interconnects the actuation chambers on both pumps such that when the lower automatic pump is provided with pressurized gas, the upper pump is simultaneously provided with the identical pressurized gas. Upon deactivation, both pumps relieve the activation pressure through the lower pump.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: April 12, 1994
    Assignee: QED Environmental Systems, Inc.
    Inventors: David A. Fischer, Kevin L. Newcomer
  • Patent number: 5002130
    Abstract: A system for handling a reeled tubing including a guide, a shear for cutting the tubing and a tubing injector including upper and lower strippers and guides and an enclosure for the injector. The enclosure in one form excludes sea water in an open bottomed enclosure and the other maintains pressure in a completely closed enclosure.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: March 26, 1991
    Assignee: Otis Engineering Corp.
    Inventor: Tibor Laky
  • Patent number: 4527632
    Abstract: A system according to the invention includes a working well head 1 whose producing head is connected by a rigid or flexible pipe to at least one underwater degasifier tank. A pump 4 for lifting the product from the well or wells 1 is regulated by a control valve which responds to the discharge flow of liquids and/or variations in weight and/or buoyancy of the degasifier tank 3. A valve for regulating the flow of product from the well 1 is controlled by a second control means. The second control means may modulate the gas sealing pressure by pinching a stream of gas at some point in the piping in response to the relative buoyancy of said underwater degasification tank. Combinations of the various systems disclosed in the invention make it possible to increase the recovery of desired product fluids from an underwater deposit.
    Type: Grant
    Filed: June 7, 1983
    Date of Patent: July 9, 1985
    Inventor: Geard Chaudot
  • Patent number: 4249598
    Abstract: An outdoor well depth indicator including a sleeve vertically slidable along a pipe extending above the well house and connected by a line to a float on the surface of the water in the well. The indicator sleeve can be seen from a distance and from any direction around a well. Also disclosed is a cutoff system for terminating a supply of water from the well when the level of water in the well reaches a minimum desired level, without immediately shutting off the pump motor.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: February 10, 1981
    Inventor: Henry R. Greer
  • Patent number: 4173255
    Abstract: A low well yield control system and method for preventing over pumping of wells and other fluid reservoirs. The control is positioned in the reservoir and includes a plurality of relief valves which are opened to replenish liquid in the reservoir from the pumped liquid in the event the liquid level is lowered relative to a float.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: November 6, 1979
    Inventor: Richard W. Kramer
  • Patent number: 4171016
    Abstract: Water, with gas entrained therein, collecting in the bottom of the casing of a gas producing well is continuously removed using an ejector in the inner of a pair of coaxial tubes mounted in the casing by continuously pumping drive water downwardly between the two tubes, radially inwardly through apertures in a nozzle body and upwardly through a nozzle at the top of the nozzle body into a suction chamber to draw water from an inlet duct at the bottom end of the inner tube through longitudinally extending passages in the nozzle body; the resulting mixture of drive water, well water and gas being discharged through a multi-stage diffuser and the inner tube to a separator, where the gas and water are separated. The separated gas can be used to operate a gas engine for driving the pump, which feeds drive water to the ejector, and the well water can be re-used as drive water.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: October 16, 1979
    Inventor: Edward A. Kempton
  • Patent number: 4035023
    Abstract: Apparatus for and process of mining a subterranean granular ore deposit through a well bore where the ore is eroded from the ore matrix by one or more laterally directed jets of fluid, e.g. water, forming an ore-bearing slurry. The apparatus comprises:A. a rotatable tool string having a first fluid passage through which fluid flows downwardly and a first slurry passage through which a slurry of said fluid and granular ore flows upwardly,B. supported therefrom underground a substantially rigid housing containing an outwardly directed cutting jet nozzle for impinging said fluid against said ore to form said slurry and having1. a second fluid passage therein connecting said first fluid passage with said jet nozzle,2. a slurry inlet through said housing,3. a second slurry passage connecting said inlet with said first slurry passage, and4.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: July 12, 1977
    Assignee: Freeport Minerals Company
    Inventor: Clifford McDonald Cockrell
  • Patent number: 4020902
    Abstract: A well point system is provided having automatic regulation of the flow of fluid through each riser in order to shut off an individual riser when the water level drops below the well point of that particular riser. The automatic regulation of the flow of water is controlled above the surface of the earth and includes a float actuated valve for preventing the pump from drawing air. The float actuated valve has a controlled air bleed for evacuating the riser and allowing the water to unseat the valve when the water rises around the well point.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: May 3, 1977
    Assignees: R. L. Gould, Stanley Hobbs
    Inventor: Joseph M. Valdespino
  • Patent number: 3995690
    Abstract: A well point system is provided having automatic regulation of the flow of fluid through each riser in order to shut off an individual riser when the water level drops below the well point of that particular riser. The automatic regulation in the flow of water is controlled above the surface of the earth and includes a float actuated valve for preventing the pump from drawing air. The float actuated valve has a float connected to a rocker arm operating two valve seats for closing a pair of ports and also has a controlled air bleed for evacuating the riser and allowing the water to unseat the valve when the water rises around the well point.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: December 7, 1976
    Assignees: R. L. Gould, Stanley Hobbs
    Inventor: Joseph M. Valdespino
  • Patent number: 3954612
    Abstract: A septic tank system is provided with an indicator above the ground surface to indicate the water level in the tributaries leading from the tank so that any excess water therein may be pumped out before it causes a back up of sewage upstream of the septic tank.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: May 4, 1976
    Inventor: Anderson L. Wilkerson