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Class Information
Number: 166/374
Name: Wells > Processes > Operating valve, closure, or changeable restrictor in a well > Operated by fluid pressure controlled above ground
Description: Process wherein the flow regulating device is operated by a fluid pressure change which is initiated by an above ground operator.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7624810 |
Ball dropping assembly and technique for use in a well |
Dec. 1, 2009 |
| 7614452 |
Flow reversing apparatus and methods of use |
Nov. 10, 2009 |
| 7552773 |
Multicycle hydraulic control valve |
Jun. 30, 2009 |
| 7510013 |
Hydraulic metering valve for operation of downhole tools |
Mar. 31, 2009 |
| 7455116 |
Injection valve and method |
Nov. 25, 2008 |
| 7416026 |
Apparatus for changing flowbore fluid temperature |
Aug. 26, 2008 |
| 7407012 |
Thermally stable diamond cutting elements in roller cone drill bits |
Aug. 5, 2008 |
| 7341108 |
Well downhole liquid dispenser |
Mar. 11, 2008 |
| 7311153 |
Flow-biased sequencing valve |
Dec. 25, 2007 |
| 7303020 |
Interventionless oil tool actuator with floating piston and method of use |
Dec. 4, 2007 |
| 7281584 |
Multi-cycle downhill apparatus |
Oct. 16, 2007 |
| 7267177 |
Tubing fill and testing valve |
Sep. 11, 2007 |
| 7237611 |
Zero drill completion and production system |
Jul. 3, 2007 |
| 7234529 |
Flow switchable check valve and method |
Jun. 26, 2007 |
| RE39583 |
Multiple well tool control systems in a multi-valve well testing system having automatic control modes |
Apr. 24, 2007 |
| 7201232 |
Washpipeless isolation strings and methods for isolation with object holding service tool |
Apr. 10, 2007 |
| 7198109 |
Double-pin radial flow valve |
Apr. 3, 2007 |
| 7191844 |
Inflate control system for inflatable straddle stimulation tool |
Mar. 20, 2007 |
| 7182139 |
System and method for controlling downhole tools |
Feb. 27, 2007 |
| 7159662 |
System for controlling a hydraulic actuator, and methods of using same |
Jan. 9, 2007 |
| 7128160 |
Method and apparatus to selectively reduce wellbore pressure during pumping operations |
Oct. 31, 2006 |
| 7124824 |
Washpipeless isolation strings and methods for isolation |
Oct. 24, 2006 |
| 7114572 |
System and method for offshore production with well control |
Oct. 3, 2006 |
| RE39209 |
Production fluid control device and method for oil and/or gas wells |
Aug. 1, 2006 |
| 7063156 |
Tubing fill and testing valve |
Jun. 20, 2006 |
| 7040409 |
Safety valve for oil wells |
May. 9, 2006 |
| 7025146 |
Alternative packer setting method |
Apr. 11, 2006 |
| 6997263 |
Multi zone isolation tool having fluid loss prevention capability and method for use of same |
Feb. 14, 2006 |
| 6983803 |
Equalizer valve and associated method for sealing a fluid flow |
Jan. 10, 2006 |
| 6854519 |
Subsurface valve with system and method for sealing |
Feb. 15, 2005 |
| 6851481 |
Electro-hydraulically pressurized downhole valve actuator and method of use |
Feb. 8, 2005 |
| 6820697 |
Downhole bypass valve |
Nov. 23, 2004 |
| 6782951 |
Flow-activated valve and method of use |
Aug. 31, 2004 |
| 6782952 |
Hydraulic stepping valve actuated sliding sleeve |
Aug. 31, 2004 |
| 6745836 |
Down hole motor assembly and associated method for providing radial energy |
Jun. 8, 2004 |
| 6736214 |
Running tool and wellbore component assembly |
May. 18, 2004 |
| 6725932 |
Down hole jar tool |
Apr. 27, 2004 |
| 6722440 |
Multi-zone completion strings and methods for multi-zone completions |
Apr. 20, 2004 |
| 6715558 |
Infinitely variable control valve apparatus and method |
Apr. 6, 2004 |
| 6672389 |
Bulged single-hinged scored rupture having a non-circular varying depth score line |
Jan. 6, 2004 |
| 6662877 |
Formation isolation valve |
Dec. 16, 2003 |
| 6651742 |
Method and apparatus for enhancing oil recovery |
Nov. 25, 2003 |
| 6644404 |
Method of progressively gravel packing a zone |
Nov. 11, 2003 |
| 6634426 |
Determination of plunger location and well performance parameters in a borehole plunger lift system |
Oct. 21, 2003 |
| 6622795 |
Flow actuated valve for use in a wellbore |
Sep. 23, 2003 |
| 6615921 |
Apparatus and method for remote adjustment of drill string centering to prevent damage to wellhead |
Sep. 9, 2003 |
| 6585051 |
Hydraulically operated fluid metering apparatus for use in a subterranean well, and associated methods |
Jul. 1, 2003 |
| 6575244 |
System for controlling the operating pressures within a subterranean borehole |
Jun. 10, 2003 |
| 6575246 |
Method and apparatus for gravel packing with a pressure maintenance tool |
Jun. 10, 2003 |
| 6571880 |
Method and multi-purpose apparatus for control of fluid in wellbore casing |
Jun. 3, 2003 |
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