Class 417/109 - Valved gas inlet

Subclass of Class 417 - Pumps
Definition: Apparatus wherein said injection means comprises valve means
No. of patents: 28
Last issue date: 06/26/2007

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Number	Title	Issue Date
7234520	Well jet device for testing and studying formations and the operating method thereof The invention relates to jet devices and the operating methods thereof and can be used in order to produce and intensify the oil inflow from a well. The inventive device comprises a jet pump arranged on a tubing string in the well with a casing string. An active noz...	06/26/2007
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 production tubing through a wall of the production tubing to inside th...	06/12/2007
7086417	Gas flow control device Invention is of an improvement to seat of gate valves used for gas-lift producing oil wells, consisting of a seat lower part of which is curved there being a straight vertical art and a sloping straight lower part, central spacing consisting of a first part in the s...	08/08/2006
7051817	Device for improving oil and gas recovery in wells A device for improving recovery of hydrocarbons through a well by creating, regulating and maintaining under the device a calculated bottomhole pressure at a desired level and creating above the device a two-phase gas-liquid homogenous flow for efficient lifting of ...	05/30/2006
7048045	Gas lift apparatus for a well In a flowing gas well having concentric production casing and tubing strings: a funnel is mounted to the bottom end of the tubing string; a packer divides the annulus into upper and lower portions;	05/23/2006
6148843	Variable orifice gas lift valve for high flow rates with detachable power source and method of using The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttle...	11/21/2000
6027313	Gas assisted fluid delivery system A fluid delivery system includes a pump, a fluid conduit and a regulated gas inlet. The fluid conduit has an upper end connected to the pump and a lower end in communication with a fluid supply. The regulated gas inlet includes a gas supply at a first pre...	02/22/2000
5979553	Method and apparatus for completing and backside pressure testing of wells A method and apparatus for completing and backside pressure testing petroleum product wells for production, with one or more differential pressure valves being present at spaced intervals within a tubing string and with a well fluid transfer device being ...	11/09/1999
5971004	Variable orifice gas lift valve assembly for high flow rates with detachable power source and method of using same The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve and actuating assembly for sealable insertion in a mandrel. The valve has a variable orifice which alternately p...	10/26/1999
5743717	Nozzle-venturi gas lift flow control device A gas flow control device for injecting gas into a production string for recovering pressure and reducing frictional losses, so that critical flow can be reached at lower pressure drops and higher production pressure, includes a nozzle having first and se...	04/28/1998
5707214	Nozzle-venturi gas lift flow control device and method for improving production rate, lift efficiency, and stability of gas lift wells A gas flow control device for injecting gas into a production string for recovering pressure and reducing frictional losses, so that critical flow can be reached at lower pressure drops and higher production pressure, includes a nozzle having first and se...	01/13/1998
5535767	Remotely actuated adjustable choke valve and method for using same A remotely-adjustable valve employable in an enhanced-lift recovery system and a method of adjusting the same. The valve comprises: (1) an elongated valve body having a process fluid inlet and a process fluid outlet, (2) an elongated valve stem disposed w...	07/16/1996
5522418	Differential pressure operated gas lift valve A differential pressure operated gas lift includes a valve element movable in a tubular body to open and close a gas flow passage having flow restricting orifices upstream thereof. A coil spring tends to open the valve element. In the open position of the...	06/04/1996
5382137	Multiple stage airlift pump A multiple stage airlift pump apparatus for elevating water or other liquids using only a single air pressure source. The functioning portion of the airlift mechanism is enclosed within a casing which is submerged into a body of water. The casing is conne...	01/17/1995
5172717	Well control system An electrically actuated downhole system for controlling and monitoring the flow of gas from a gas lift petroleum well in which a borehole penetrates at least two spacially separated geological production zones, and at least two strings of parallel tubing...	12/22/1992
4708595	Intermittent oil well gas-lift apparatus An intermittent gas-lift apparatus and process of lifting liquids is described. The apparatus includes a chamber on the downhole end of a production tubing in communication with a sidestring tube. The sidestring tube is in communication with the high pres...	11/24/1987
4647272	Method and lift pump for raising liquids Disclosed are method and fluid lift pump for raising liquids through a bundle of substantially vertical lift tubes adapted to raise liquids even while submerged less than 50% of total lift height, the tubes having about the same length extending side by s...	03/03/1987
4645427	Metering pump assembly An air lift pump delivers liquid from a sump to an elevated tundish. The tundish is divided by weirs into a plurality of compartments in cascade. Surplus liquid overflows from the upper compartments back to the sump to produce a constant depth in the lowe...	02/24/1987
4643650	Fluid-raising apparatus driven by low hydraulic head A fluid-raising apparatus includes a compression chamber which receives liquid, from an elevated source, such that gas in the chamber is pressurized and used to lift fluid through a vertical conduit. When the chamber fills with liquid, a float lifts a dra...	02/17/1987
4579511	Air lift pump system Disclosed is a pumping system utilizing pressurized air injected into a lift assembly submerged in oil fluids for lifting of these oil fluids from a well. The system includes a volume expansion chamber with a self-cleaning check valving assembly. The lift...	04/01/1986
4512155	Flowing geothermal wells and heat recovery systems An apparatus and method for stimulating a flow from a geothermal well. A primary or stimulating fluid flows into the space between the inner and outer casings of the well. The primary fluid enters the inner casing through a series of valves at various ele...	04/23/1985
4397612	Gas lift utilizing a liquefiable gas introduced into a well A gas lift method for lifting a well fluid from a well, the method comprising feeding a liquid lifting medium into a first well conduit of the well to maintain a liquid column of liquid lifting medium in the first well conduit to provide a significant liq...	08/09/1983
4392532	Minimum temperature correction method for locating and setting gas-lift valves A method for locating gas-lift valves in properly spaced manner within a string of production tubing extending to a production zone within a well. During calculations for valve spacing and set pressures, the spacing and reopening pressures of the valves a...	07/12/1983
4364232	Flowing geothermal wells and heat recovery systems The flow performance of the geothermal wells represents the ability of the wells to produce useful heat. A liquid-dominated geothermal well can be made to flow by introducing a primary fluid at a selected level in the well. In the process disclosed herein...	12/21/1982
4276482	Line flow electric power generator An electrical power generator employing a helically-vaned in-line rotor in a flow line as a prime mover means and as an integral part of the generator by effecting a cyclic variation in the density of permanent magnet generated flux fields which pass thro...	06/30/1981
4149829	Gas lift valve and mandrel combination with improvement of the screening for said valve An improved conventional type of gas lift valve and mandrel combination. It has a large area screen which encloses the valve and prevents it from having the inlet port and/or its integral small area screen, become plugged....	04/17/1979
4110057	Gas lift mandrel valve mechanism A mandrel valve and gas lift valve mechanism that is adapted to be interconnected in a production tubing string within a well in order to produce fluid from the well under conventional gas lift methods. The gas lift valve includes a housing carried by a m...	08/29/1978
4035103	Gas lift mandrel valve mechanism A mandrel valve and gas lift valve mechanism that is adapted to be interconnected in a production tubing string within a well in order to produce fluid from the well under conventional gas lift methods. A plurality of gas lift valve mechanisms, which may ...	07/12/1977

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Class 417/109 - Valved gas inlet