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Class Information
Number: 166/316
Name: Wells > Valves, closures or changeable restrictors
Description: Devices comprising (1) valves, (2) closure means operable while the device is in the well (e.g., by destroying them) to effect fluid flow, or (3) means for effecting a calculated regulation of fluid flow by a restriction whose restrictive effect may be varied (e.g., a changeable choke).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7624807 |
Deep set safety valve |
Dec. 1, 2009 |
| 7610957 |
Downhole debris catcher and associated mill |
Nov. 3, 2009 |
| 7604056 |
Downhole valve and method of making |
Oct. 20, 2009 |
| 7568527 |
Method of collecting crude oil and crude oil collection header apparatus |
Aug. 4, 2009 |
| 7559375 |
Flow control device for choking inflowing fluids in a well |
Jul. 14, 2009 |
| 7559358 |
Downhole uses of electroactive polymers |
Jul. 14, 2009 |
| 7543649 |
Method of collecting crude oil and crude oil collection header apparatus |
Jun. 9, 2009 |
| 7481283 |
Wellbore motor having magnetic gear drive |
Jan. 27, 2009 |
| 7455114 |
Snorkel device for flow control |
Nov. 25, 2008 |
| 7455115 |
Flow control device |
Nov. 25, 2008 |
| 7451825 |
Annular choke |
Nov. 18, 2008 |
| 7431093 |
Protection scheme and method for deployment of artificial lift devices in a wellbore |
Oct. 7, 2008 |
| 7428924 |
System and method for completing a subterranean well |
Sep. 30, 2008 |
| 7373991 |
Swellable elastomer-based apparatus, oilfield elements comprising same, and methods of using same in oilfield applications |
May. 20, 2008 |
| 7347945 |
Method and an installation for separating out multiphase effluents |
Mar. 25, 2008 |
| 7178600 |
Apparatus and methods for utilizing a downhole deployment valve |
Feb. 20, 2007 |
| 7137450 |
Electric-hydraulic power unit |
Nov. 21, 2006 |
| 7137452 |
Method of disabling and locking open a safety valve with releasable flow tube for flapper lockout |
Nov. 21, 2006 |
| 7096982 |
Drill shoe |
Aug. 29, 2006 |
| 7086479 |
Expanding well tools |
Aug. 8, 2006 |
| 6988547 |
Method and system of fluid analysis and control in hydrocarbon well |
Jan. 24, 2006 |
| 6966368 |
Plug and expel flow control device |
Nov. 22, 2005 |
| 6951331 |
Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve |
Oct. 4, 2005 |
| 6942038 |
Mud diverter and method for horizontal drilling |
Sep. 13, 2005 |
| 6899318 |
Wave seal to resist extrusion during equalization |
May. 31, 2005 |
| 6892818 |
Interchangeable choke assembly |
May. 17, 2005 |
| 6883614 |
Modular actuator system for valves and chokes |
Apr. 26, 2005 |
| 6880638 |
Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve |
Apr. 19, 2005 |
| 6877558 |
Apparatus and method for locating joints in coiled tubing operations |
Apr. 12, 2005 |
| 6868910 |
Method and device for regulating the flow rate of formation fluids produced by an oil well |
Mar. 22, 2005 |
| 6866100 |
Mechanically opened ball seat and expandable ball seat |
Mar. 15, 2005 |
| 6851560 |
Drain element comprising a liner consisting of hollow rods for collecting in particular hydrocarbons |
Feb. 8, 2005 |
| 6810955 |
Gas lift mandrel |
Nov. 2, 2004 |
| 6688389 |
Apparatus and method for locating joints in coiled tubing operations |
Feb. 10, 2004 |
| 6679324 |
Downhole device for controlling fluid flow in a well |
Jan. 20, 2004 |
| 6662869 |
Ceramic components for high pressure oil wells |
Dec. 16, 2003 |
| 6626240 |
Device for annular well isolation |
Sep. 30, 2003 |
| 6491102 |
Downhole multiplexer and related methods |
Dec. 10, 2002 |
| 6478091 |
Expandable liner and associated methods of regulating fluid flow in a well |
Nov. 12, 2002 |
| 6321845 |
Apparatus for device using actuator having expandable contractable element |
Nov. 27, 2001 |
| 6253853 |
Fluid injection tubing assembly and method |
Jul. 3, 2001 |
| 6112815 |
Inflow regulation device for a production pipe for production of oil or gas from an oil and/or gas reservoir |
Sep. 5, 2000 |
| 5887657 |
Pressure test method for permanent downhole wells and apparatus therefore |
Mar. 30, 1999 |
| 5803179 |
Screened well drainage pipe structure with sealed, variable length labyrinth inlet flow control apparatus |
Sep. 8, 1998 |
| 5564502 |
Well completion system with flapper control valve |
Oct. 15, 1996 |
| 5520246 |
Multi-mode cushioning an instrument suspended in a well |
May. 28, 1996 |
| 5513703 |
Methods and apparatus for perforating and treating production zones and otherwise performing related activities within a well |
May. 7, 1996 |
| 5435393 |
Procedure and production pipe for production of oil or gas from an oil or gas reservoir |
Jul. 25, 1995 |
| 5351533 |
Coiled tubing system used for the evaluation of stimulation candidate wells |
Oct. 4, 1994 |
| 5327960 |
Gravel pack installations for wells |
Jul. 12, 1994 |
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