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Class Information
Number: 166/55
Name: Wells > Means for perforating, weakening, bending or separating pipe at an unprepared point
Description: Devices comprising means for perforating, weakening, bending or separating the side wall of a well pipe at a location in the pipe which has not been specially preconditioned for such action.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617891 |
Mechanical crawler |
Nov. 17, 2009 |
| 7610969 |
Perforating methods and devices for high wellbore pressure applications |
Nov. 3, 2009 |
| 7571769 |
Casing window milling assembly |
Aug. 11, 2009 |
| 7571774 |
Self-lubricating expansion mandrel for expandable tubular |
Aug. 11, 2009 |
| 7568525 |
Method and system for increasing well rate using well-capital-string perforation |
Aug. 4, 2009 |
| 7565930 |
Method and apparatus for stimulating wells with propellants |
Jul. 28, 2009 |
| 7565927 |
Monitoring an explosive device |
Jul. 28, 2009 |
| 7552765 |
Wellhead blowout preventer with extended ram for sealing central bore |
Jun. 30, 2009 |
| 7537055 |
Method and apparatus for forming a window in a casing using a biasing arm |
May. 26, 2009 |
| 7533731 |
Casing apparatus and method for casing or repairing a well, borehole, or conduit |
May. 19, 2009 |
| 7497259 |
System and method for forming cavities in a well |
Mar. 3, 2009 |
| 7487832 |
Force transfer apparatus to assist release of loaded member |
Feb. 10, 2009 |
| 7469747 |
Method and apparatus for preventing spillage or loss of drill fluids |
Dec. 30, 2008 |
| 7455110 |
In-situ creation of drilling deflector |
Nov. 25, 2008 |
| 7441601 |
Perforation gun with integral debris trap apparatus and method of use |
Oct. 28, 2008 |
| 7441595 |
Method and apparatus for single-run formation of multiple lateral passages from a wellbore |
Oct. 28, 2008 |
| 7431075 |
Propellant fracturing of wells |
Oct. 7, 2008 |
| 7409992 |
Perforating gun |
Aug. 12, 2008 |
| 7401650 |
Apparatus and methods for radially expanding a tubular member |
Jul. 22, 2008 |
| 7389817 |
Riser control device |
Jun. 24, 2008 |
| 7387162 |
Apparatus and method for selective actuation of downhole tools |
Jun. 17, 2008 |
| 7387163 |
In-situ landfill gas well perforation method and apparatus |
Jun. 17, 2008 |
| 7373987 |
Method and apparatus for preventing spillage or loss of drill fluids |
May. 20, 2008 |
| 7367396 |
Blowout preventers and methods of use |
May. 6, 2008 |
| 7360599 |
Debris reduction perforating apparatus and method for use of same |
Apr. 22, 2008 |
| 7360587 |
Debris reduction perforating apparatus |
Apr. 22, 2008 |
| 7347279 |
Charge holder apparatus |
Mar. 25, 2008 |
| 7328750 |
Sealing plug and method for removing same from a well |
Feb. 12, 2008 |
| 7325631 |
Mill and pump-off sub |
Feb. 5, 2008 |
| 7325612 |
One-trip cut-to-release apparatus and method |
Feb. 5, 2008 |
| 7303017 |
Perforating gun assembly and method for creating perforation cavities |
Dec. 4, 2007 |
| 7284489 |
Casing conveyed well perforating apparatus and method |
Oct. 23, 2007 |
| 7284601 |
Casing conveyed well perforating apparatus and method |
Oct. 23, 2007 |
| 7284613 |
Method and apparatus for assembling stackable gun system inside a well bore |
Oct. 23, 2007 |
| 7273102 |
Remotely actuating a casing conveyed tool |
Sep. 25, 2007 |
| 7267175 |
Apparatus and methods for forming a lateral wellbore |
Sep. 11, 2007 |
| 7243713 |
Shear/seal ram assembly for a ram-type blowout prevention system |
Jul. 17, 2007 |
| 7231979 |
Short radius whipstock system |
Jun. 19, 2007 |
| 7213655 |
System for connecting downhole tools |
May. 8, 2007 |
| 7207401 |
One trip milling system |
Apr. 24, 2007 |
| 7207382 |
Shearing sealing ram |
Apr. 24, 2007 |
| 7195069 |
Method and apparatus for backing off a tubular member from a wellbore |
Mar. 27, 2007 |
| 7195067 |
Method and apparatus for well perforating |
Mar. 27, 2007 |
| 7185701 |
Apparatus and method for radially expanding a tubular member |
Mar. 6, 2007 |
| 7172023 |
Perforating gun assembly and method for enhancing perforation depth |
Feb. 6, 2007 |
| 7168491 |
Perforation alignment tool for jet drilling, perforating and cleaning |
Jan. 30, 2007 |
| 7156170 |
Methods and apparatus for severing nested strings of tubulars |
Jan. 2, 2007 |
| 7152679 |
Downhole tool for deforming an object |
Dec. 26, 2006 |
| 7140429 |
Device for cutting of slot-like key seats in wells by a hydroabrasive method |
Nov. 28, 2006 |
| 7140428 |
Expander for expanding a tubular element |
Nov. 28, 2006 |
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