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Class Information
Number: 166/250.08
Name: Wells > Processes > With indicating, testing, measuring or locating > Leak testing or locating
Description: Testing or locating including the step(s) of finding a nongeological fault allowing the escape of fluid or solids.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8656995 Detecting and correcting unintended fluid flow between subterranean zones Feb. 25, 2014
8631866 Leak detection in circulated fluid systems for heating subsurface formations Jan. 21, 2014
8616277 Real time formation pressure test and pressure integrity test Dec. 31, 2013
8579026 Safety structure for downhole power unit testing Nov. 12, 2013
8575945 Subsea line monitoring device Nov. 5, 2013
8517094 Detecting and correcting unintended fluid flow between subterranean zones Aug. 27, 2013
8490719 Method and apparatus for controlling bottom hole pressure in a subterranean formation during rig pump operation Jul. 23, 2013
8408295 Method for testing connectors Apr. 2, 2013
8397809 Technique and apparatus to perform a leak off test in a well Mar. 19, 2013
8381812 Barrier for instrumentation piping Feb. 26, 2013
8336620 Well seals Dec. 25, 2012
8267170 Offset barrier wells in subsurface formations Sep. 18, 2012
8201625 Borehole imaging and orientation of downhole tools Jun. 19, 2012
8136597 Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions Mar. 20, 2012
8016035 Chemical injection check valve incorporated into a tubing retrievable safety valve Sep. 13, 2011
8002032 Hydraulic overshot with removable setting and testing core Aug. 23, 2011
7909095 Valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string Mar. 22, 2011
7775274 Method for detecting fluid leakage from a subterranean formation Aug. 17, 2010
7748449 Tubingless electrical submersible pump installation Jul. 6, 2010
7708066 Full bore valve for downhole use May. 4, 2010
7647973 Collapse arrestor tool Jan. 19, 2010
7644757 Fixed-point packoff element with primary seal test capability Jan. 12, 2010
7624796 Arrangement of test plug Dec. 1, 2009
7604050 Wellhead and control stack pressure test plug tool Oct. 20, 2009
7516786 Wellhead and control stack pressure test plug tool Apr. 14, 2009
7506688 System and method for breach detection in petroleum wells Mar. 24, 2009
7475723 Apparatus and methods for creation of down hole annular barrier Jan. 13, 2009
7438135 Method of suspending, completing and working over a well Oct. 21, 2008
7424915 Vacuum pumping of conductor-in-conduit heaters Sep. 16, 2008
7401654 Blowout preventer testing system Jul. 22, 2008
7380598 Method for detecting fluid leakage from a subterranean formation Jun. 3, 2008
7314082 Methods of improving well bore pressure containment integrity Jan. 1, 2008
7225867 Liner top test packer Jun. 5, 2007
7207384 Wellhead and control stack pressure test plug tool Apr. 24, 2007
7134491 Leak remedy through sealants in local reservoirs Nov. 14, 2006
7063146 System and method for processing signals in a well Jun. 20, 2006
7031841 Method for determining pressure of earth formations Apr. 18, 2006
7013249 Method for detecting near neutral/low pH stress corrosion cracking in steel gas pipeline systems Mar. 14, 2006
6966381 Drill-through spool body sleeve assembly Nov. 22, 2005
6926081 Methods of discovering and correcting subterranean formation integrity problems during drilling Aug. 9, 2005
6915847 Testing a junction of plural bores in a well Jul. 12, 2005
6672389 Bulged single-hinged scored rupture having a non-circular varying depth score line Jan. 6, 2004
6575243 Zonal isolation tool with same trip pressure test Jun. 10, 2003
6540021 Method for detecting inflow of fluid in a well while drilling and implementing device Apr. 1, 2003
6513591 Leak detection method Feb. 4, 2003
6499540 Method for detecting a leak in a drill string valve Dec. 31, 2002
6487893 Apparatus and method for pressure testing the sealing engagement of the fittings associated with the communication lines of a well tool Dec. 3, 2002
6390194 Method and apparatus for multi-diameter testing of blowout preventer assemblies May. 21, 2002
6390193 Downhole connector for production tubing and control line and method May. 21, 2002
6237689 Method for confirming the integrity of a seal system within a subterranean well conduit Christmas tree valve assembly May. 29, 2001

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