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)
12/2003
12/24/2003CA2489283A1 Collapsible expansion cone
12/18/2003WO2003104608A1 A device for a hydraulic cutting tool
12/18/2003WO2003104603A2 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
12/18/2003US20030230893 Spoolable composite coiled tubing connector
12/18/2003CA2493990A1 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
12/17/2003EP1370745A2 Methods and apparatus for severing nested strings of tubulars
12/16/2003CA2217356C Method and apparatus for drilling and re-entering multiple lateral branches in a well
12/11/2003WO2003101656A1 Method and apparatus for cutting tubulars
12/10/2003EP1368554A1 Expander for expanding a tubular element
12/10/2003EP1198658B1 Method of creating a weld in a wellbore
12/09/2003US6659200 Actuator assembly and method for actuating downhole assembly
12/09/2003US6659185 Subsurface safety valve lock out and communication tool and method for use of the same
12/04/2003US20030221579 Circular shaped charge
12/03/2003EP1367354A1 Circular shaped charge
12/03/2003CN2589664Y Oil pipe rotating machine
12/02/2003CA2238628C Combination milling tool and drill bit
12/02/2003CA2198163C High pressure casing patch
11/2003
11/27/2003WO2003097277A1 Down hole pipe and casing cutter
11/27/2003WO2003042486A3 Collapsible expansion cone
11/27/2003US20030217844 Deformable member
11/25/2003US6651746 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method
11/25/2003CA2225207C Single trip whipstock assembly
11/20/2003WO2003062582A3 Disengageable downhole tool
11/20/2003US20030213590 Method and device for perforating a portion of casing in a reservoir
11/19/2003EP1362158A1 Method and apparatus for operations in underground/subsea oil and gas wells
11/18/2003US6648069 Well reference apparatus and method
11/18/2003US6648068 One-trip milling system
11/13/2003WO2003093624A2 Packer retriever
11/13/2003WO2003093623A2 Mono diameter wellbore casing
11/13/2003WO2003071084A3 System for forming a window and drilling a sidetrack wellbore
11/13/2003CA2484966A1 Mono diameter wellbore casing
11/11/2003US6644099 Shaped charge tubing cutter performance test apparatus and method
11/06/2003US20030205377 Packer retriever
11/06/2003US20030205374 One trip through tubing window milling apparatus and method
11/04/2003US6640903 Forming a wellbore casing while simultaneously drilling a wellbore
10/2003
10/28/2003US6637516 High torque and high capacity rotatable center core and floatable sealed body assemblies with universal RAM applications and method
10/23/2003US20030196807 One trip through tubing window milling apparatus and method
10/21/2003US6634431 Isolation of subterranean zones
10/16/2003US20030192705 Forming a wellbore casing while simultaneously drilling a wellbore
10/15/2003CN2580098Y Oil pipe grinding and cutting device
10/14/2003US6631760 Tie back liner for a well system
10/12/2003CA2842776A1 Sealed multilateral junction system
10/12/2003CA2842775A1 Sealed multilateral junction system
10/12/2003CA2842773A1 Sealed multilateral junction system
10/12/2003CA2766051A1 Sealed multilateral junction system
10/09/2003WO2003083258A1 Method for installing an expandable coiled tubing patch
10/09/2003WO2003083253A1 Junk removal tool
10/09/2003WO2003083250A1 One trip through tubing window milling apparatus and method
10/09/2003US20030188868 Apparatus and methods for separating and joining tubulars in a wellbore
10/07/2003US6629567 Method and apparatus for expanding and separating tubulars in a wellbore
10/07/2003US6629565 Abandonment and retrieval apparatus and method
10/07/2003CA2226970C Branch boreholes
10/02/2003WO2003080994A1 A method for deforming a tubular member
10/02/2003US20030183397 Method for installing an expandable coiled tubing patch
10/02/2003US20030183388 One trip through tubing window milling apparatus and method
09/2003
09/30/2003US6626074 Down hole pipe and casing cutter
09/25/2003US20030178197 Downhole tubular string connections
09/23/2003US6622789 Downhole tubular patch, tubular expander and method
09/18/2003US20030173090 Lubrication and self-cleaning system for expansion mandrel
09/11/2003US20030168214 Method and device for testing a well
09/04/2003US20030164037 Pressure sensor assembly for wellbore
09/03/2003EP1340881A1 Explosive window cutting apparatus and method
09/03/2003EP1339942A1 Expander
09/02/2003US6612383 Method and apparatus for milling well casing and drilling formation
08/2003
08/28/2003WO2003071084A2 System for forming a window and drilling a sidetrack wellbore
08/28/2003US20030159826 Method and system for avoiding damage to behind-casing structures
08/27/2003EP1338754A2 Method for forming a window in a tubular and apparatus for use in said method
08/27/2003EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore
08/27/2003CN1119499C Downhole milling device
08/26/2003US6609567 Tubing hanger with lateral feed-through connection
08/21/2003WO2003069115A2 Method of repair of collapsed or damaged tubulars downhole
08/21/2003WO2003069114A1 Casing reaming assembly
08/21/2003US20030155118 Method of repair of collapsed or damaged tubulars downhole
08/21/2003CA2476459A1 Casing reaming assembly
08/20/2003EP1336720A2 Method for forming a window in a tubular and apparatus for use in said method
08/20/2003EP1224376B1 Sleeve for stiffening an output shaft on a mill
08/20/2003EP0866910B1 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/14/2003WO2003067028A1 Method for treating bottom-hole formation zone
08/14/2003WO2003067018A2 Well system
08/14/2003CA2755094A1 Well system
08/13/2003EP1333963A2 Apparatus and methods for separating and joining tubulars in a wellbore
08/12/2003US6604763 Expandable connector
08/07/2003US20030147700 Device and method for trenchless replacement of underground pipe
08/07/2003US20030146003 Bore isolation
08/06/2003CN2564736Y Tool for cutting and fishing pipe string of oil field downhole
08/05/2003CA2087673C Perforating type lockout tool
07/2003
07/31/2003WO2003062582A2 Disengageable downhole tool
07/31/2003US20030141063 Methods and apparatus for forming a lateral wellbore
07/30/2003EP1034354B1 Mill for use in a wellbore and method of milling
07/30/2003CN2563291Y Oil pipe flattening device
07/29/2003US6598687 Three dimensional steerable system
07/29/2003US6598679 Radial cutting torch with mixing cavity and method
07/29/2003US6598678 Apparatus and methods for separating and joining tubulars in a wellbore
07/24/2003WO2003060289A1 Bore isolation
07/24/2003US20030136561 Straddle
07/23/2003EP0885344B1 Method of removing wellhead assemblies
07/17/2003US20030132032 Method and apparatus for drilling and lining a wellbore
07/10/2003US20030127231 Coiled tubing cutter
07/03/2003US20030121558 Tube anchored to structure; pulling expansion structure through tube; well bore casing; controlling fluid flow
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