Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 29 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
Patents for E21B 29 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground (5,744)
07/2003
07/02/2003EP1169547B1 Method of creating a wellbore in an underground formation
07/02/2003EP0851964B1 A cutting insert for use in a wellbore milling tool
06/2003
06/24/2003US6581690 Window cutting tool for well casing
06/19/2003US20030111229 Wellhead assembly for communicating with the casing hanger annulus
06/19/2003US20030111220 Shaped charge tubing cutter
06/18/2003EP1319115A2 Methods and apparatus for forming a lateral wellbore
06/17/2003US6578636 Horizontal directional drilling in wells
06/17/2003US6578635 Lining removal method, system and components thereof
06/17/2003US6578630 Apparatus and methods for expanding tubulars in a wellbore
06/12/2003WO2003048520A1 Method and apparatus for expanding and separating tubulars in a wellbore
06/12/2003WO2003048510A1 Reverse section milling method and apparatus
06/12/2003US20030106698 Apparatus and methods for separating and joining tubulars in a wellbore
06/12/2003US20030106696 Method and apparatus for expanding and separating tubulars in a wellbore
06/11/2003EP1173655A4 Ribbed sealing element and method of use
06/10/2003US6575240 System and method for driving pipe
06/05/2003WO2003046424A2 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method
06/05/2003WO2003046329A2 A wellhead assembly for communicating with the casing hanger annulus
06/05/2003US20030102133 Non-seize material attachment for a drill slip system
06/05/2003US20030102129 Method and apparatus for forming an optimized window
06/05/2003US20030102127 Downhole tubular patch, tubular expander and method
05/2003
05/29/2003US20030098162 Method of inserting a tubular member into a wellbore
05/29/2003US20030098161 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method
05/29/2003US20030098154 Apparatus for radially expanding tubular members
05/29/2003US20030098152 Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
05/28/2003EP1314851A2 Apparatus for completing a subterranean well and method of using same
05/28/2003EP1235972B1 Pipe expansion device
05/27/2003US6568492 Drag-type casing mill/drill bit
05/22/2003WO2003042489A2 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
05/22/2003WO2003042487A2 Mono diameter wellbore casing
05/22/2003WO2003042486A2 Collapsible expansion cone
05/22/2003WO2003008755A3 Wear resistant tubular connection
05/22/2003US20030094310 Three dimensional steerable system and method for steering bit to drill borehole
05/22/2003US20030094279 Method of selecting tubular members
05/22/2003US20030094278 Expansion cone for radially expanding tubular members
05/22/2003US20030094277 Expansion cone for radially expanding tubular members
05/22/2003CA2467381A1 Mono diameter wellbore casing
05/21/2003EP1312751A2 Apparatus and method for milling through a whipstock in a wellbore
05/20/2003US6564868 Cutting tool and method for cutting tubular member
05/15/2003US20030089499 Method and apparatus for milling a window in a well casing or liner
05/13/2003US6561227 Wellbore casing
05/13/2003CA2156977C Improved methods and systems for subterranean multilateral well drilling and completion
05/06/2003US6557654 Drill pipe having a journal formed thereon
05/06/2003US6557640 Lubrication and self-cleaning system for expansion mandrel
05/01/2003WO2003036014A1 Disengagable reamer
05/01/2003US20030079886 Expandable tubing and method
05/01/2003US20030079885 Expandable tubing and method
04/2003
04/29/2003US6554073 Method and apparatus for removing wellhead assemblies
04/29/2003US6554062 Anchor apparatus and method
04/24/2003WO2002038343A3 Apparatus and methods for separating and joining tubulars in a wellbore
04/24/2003US20030075361 Well system
04/24/2003US20030075336 Subsurface safety valve lock out and communication tool and method for use of the same
04/24/2003US20030075334 Wellbore liner system
04/23/2003CN1413285A Three dimensional steerable system
04/17/2003WO2003031771A1 Contractable and expandable tubular wellbore system
04/17/2003WO2003031760A2 Non-seize material attachment for a drill slip system
04/17/2003US20030070817 Subsurface safety valve lock out and communication tool and method for use of the same
04/17/2003US20030070812 Borehole conduit cutting apparatus and process
04/15/2003US6547006 Wellbore liner system
04/10/2003WO2003029608A1 Method and apparatus for expanding and separating tubulars in a wellbore
04/09/2003EP1299616A1 Deformable member
04/09/2003EP1299615A1 Apparatus and methods for orientation of a tubular string in a non-vertical wellbore
04/08/2003US6543552 Method and apparatus for drilling and lining a wellbore
04/08/2003US6543536 Well reference apparatus and method
04/08/2003CA2239645C Method and apparatus for locating a drill bit when drilling out cementing equipment from a wellbore
04/03/2003US20030062171 Method and apparatus for expanding and separating tubulars in a wellbore
04/02/2003EP1297315A1 Apparatus and method for isolating a pipe segment
04/02/2003EP1049852B1 Milling system and method in a wellbore
04/02/2003EP0960261B1 Tool and method for drilling a lateral well
04/02/2003EP0960260B1 Tool for making an opening in a tubular in a wellbore
04/02/2003EP0944766B1 System for controlling and stopping oil drilling fires
04/02/2003CN2542821Y High-strength self-locking slip type casing patching device
03/2003
03/27/2003US20030058125 Reservoir management system and method
03/27/2003US20030056949 Wellbore casing
03/26/2003EP1296018A2 Lining a lateral wellbore
03/26/2003EP1295005A1 Milling of casing using coiled tubing
03/26/2003EP1080296B1 Deformable liner tube
03/25/2003US6536531 Apparatus and methods for orientation of a tubular string in a non-vertical wellbore
03/25/2003US6536525 Methods and apparatus for forming a lateral wellbore
03/20/2003WO2002032634B1 Fluid cutting tool and method for cutting tubular member with a jet of fluid
03/20/2003US20030051870 Radial cutting torch with mixing cavity
03/13/2003US20030047312 Drill pipe explosive severing tool
03/12/2003EP1129271B1 Shearing arrangement for subsea umbilicals
03/06/2003US20030044237 Trenchless water pipe replacement device and method
03/06/2003US20030042024 Methods and associated apparatus for drilling and completing a wellbore junction
03/05/2003EP1287228A1 Wellbore liner system
03/04/2003US6527049 Apparatus and method for isolating a section of tubing
02/2003
02/26/2003CN1399705A Sealing off openings through wall of well tubular
02/25/2003US6524031 Device and method for trenchless replacement of underground pipe
02/25/2003US6523614 Subsurface safety valve lock out and communication tool and method for use of the same
02/25/2003US6523610 Methods and apparatus for forming metal casings in well bores
02/20/2003WO2003014526A1 Dual sensor freepoint tool
02/12/2003EP1088151B1 Downhole milling device
02/12/2003EP1073825B1 Foldable tube
02/12/2003EP1070194B1 A mill and a method for milling
02/11/2003US6518995 System and process for remote, in situ metal work
02/11/2003US6516506 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit
02/06/2003WO2002075097A3 Methods and apparatus for severing nested strings of tubulars
02/06/2003US20030024708 Structral support
02/06/2003US20030024702 Dual sensor freepoint tool
02/04/2003CA2071721C Downhole tool apparatus with non-metallic components and methods of drilling thereof
1 ... 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 ... 58