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Class Information
Number: 166/55.2
Name: Wells > Means for perforating, weakening, bending or separating pipe at an unprepared point > Perforating or splitting cutter
Description: Devices comprising a mechanical tool for forming an aperture or fissure in the wall of the pipe.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7413015 |
Perforating gun |
Aug. 19, 2008 |
| 7353866 |
Stimulation tool having a sealed ignition system |
Apr. 8, 2008 |
| 7284613 |
Method and apparatus for assembling stackable gun system inside a well bore |
Oct. 23, 2007 |
| 7255171 |
Method and apparatus for manufacturing an expandable slotted tube |
Aug. 14, 2007 |
| 7249918 |
Cutting machine |
Jul. 31, 2007 |
| 7243725 |
Surge chamber assembly and method for perforating in dynamic underbalanced conditions |
Jul. 17, 2007 |
| 7231982 |
Perforating gun quick connection system |
Jun. 19, 2007 |
| 7217065 |
Modular pipe breaking assembly and method |
May. 15, 2007 |
| 7210524 |
Perforating gun quick connection system |
May. 1, 2007 |
| 7195066 |
Engineered solution for controlled buoyancy perforating |
Mar. 27, 2007 |
| 7159657 |
Shaped charge loading tube for perforating gun |
Jan. 9, 2007 |
| 7134374 |
Safety cable cutter for cutting a cable used in servicing an oil and gas well |
Nov. 14, 2006 |
| 7111685 |
Downhole sampling apparatus and method |
Sep. 26, 2006 |
| 7066261 |
Perforating system and method |
Jun. 27, 2006 |
| 7044225 |
Shaped charge |
May. 16, 2006 |
| 7036599 |
Method and apparatus for cutting underwater structures |
May. 2, 2006 |
| 7021381 |
Method and apparatus for removing casing |
Apr. 4, 2006 |
| 6990879 |
Drain line re-perforator device |
Jan. 31, 2006 |
| 6966378 |
Method and apparatus for perforating a well |
Nov. 22, 2005 |
| 6962203 |
One trip completion process |
Nov. 8, 2005 |
| 6959765 |
Explosive pipe severing tool |
Nov. 1, 2005 |
| 6942034 |
Extent of detonation determination method using seismic energy |
Sep. 13, 2005 |
| 6926087 |
Electro-mechanical wireline anchoring system and method |
Aug. 9, 2005 |
| 6920923 |
Section mill for wells |
Jul. 26, 2005 |
| 6920945 |
Method and system for facilitating horizontal drilling |
Jul. 26, 2005 |
| 6892815 |
Coal bed methane borehole pipe liner perforation system |
May. 17, 2005 |
| 6851471 |
Perforating gun |
Feb. 8, 2005 |
| 6827145 |
Methods and apparatus for severing nested strings of tubulars |
Dec. 7, 2004 |
| 6729406 |
Method and apparatus for performing cutting operations in a subterranean well |
May. 4, 2004 |
| 6712143 |
Borehole conduit cutting apparatus and process |
Mar. 30, 2004 |
| 6695056 |
System for forming a window and drilling a sidetrack wellbore |
Feb. 24, 2004 |
| 6637508 |
Multi-shot tubing perforator |
Oct. 28, 2003 |
| 6598679 |
Radial cutting torch with mixing cavity and method |
Jul. 29, 2003 |
| 6591911 |
Multi-directional gun carrier method and apparatus |
Jul. 15, 2003 |
| 6497285 |
Low debris shaped charge perforating apparatus and method for use of same |
Dec. 24, 2002 |
| 6401818 |
Wellbore perforation method and apparatus |
Jun. 11, 2002 |
| 6340270 |
Apparatus and method for the longitudinal splitting of pipes laid underground |
Jan. 22, 2002 |
| 6283214 |
Optimum perforation design and technique to minimize sand intrusion |
Sep. 4, 2001 |
| 6244157 |
Wire carrier perforating gun |
Jun. 12, 2001 |
| 6183165 |
Process and device for separation of pipes or columns fixed in the ground |
Feb. 6, 2001 |
| 6167968 |
Method and apparatus for radially drilling through well casing and formation |
Jan. 2, 2001 |
| 6167957 |
Helical perforating gun |
Jan. 2, 2001 |
| 6082450 |
Apparatus and method for stimulating a subterranean formation |
Jul. 4, 2000 |
| 6024169 |
Method for window formation in wellbore tubulars |
Feb. 15, 2000 |
| 6024166 |
Apparatus for forming a slot in a wellbore |
Feb. 15, 2000 |
| 6012525 |
Single-trip perforating gun assembly and method |
Jan. 11, 2000 |
| 5951221 |
Apparatus for in-pipe use |
Sep. 14, 1999 |
| 5931442 |
Submersible work vessel for installing a blow out preventer |
Aug. 3, 1999 |
| 5890539 |
Tubing-conveyer multiple firing head system |
Apr. 6, 1999 |
| 5791417 |
Tubular window formation |
Aug. 11, 1998 |
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