Patents
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)
02/2011
02/17/2011WO2011019926A2 Optimized machining process for cutting tubulars downhole
02/16/2011EP2283204A1 Consumable downhole tool
02/15/2011US7886833 System and method for low-pressure well completion
02/15/2011US7886829 Subsea tanker hydrocarbon production system
02/15/2011US7886828 Floating vessel for supporting top tension drilling and production risers
02/15/2011US7886827 Apparatus for, and method of, landing items at a well location
02/15/2011CA2603100C Downhole sealing for production tubing
02/10/2011WO2011017692A2 Cutter and cutting tool incorporating the same
02/10/2011US20110030971 Overshot Tool and Method
02/10/2011CA2769844A1 Cutter body base having channel
02/09/2011EP2281998A2 Methods and apparatus for subsea well intervention and subsea wellhead retrieval
02/09/2011CN201738854U Casing patching device
02/09/2011CN201738853U Copper ring scarf welded suspended sealing structure of expansion tube
02/09/2011CN201738852U Large-aperture and body-free explosive charge suitable for drilling rod perforation
02/09/2011CN101065554B A sidetracking system and method, and its milling cutter and whipstock
02/03/2011WO2011012902A1 Improvements in or relating to cooling
02/03/2011CA2768605A1 Improvements in or relating to cooling
02/01/2011US7878242 Interface for deploying wireline tools with non-electric string
01/2011
01/27/2011WO2011011574A2 Use of a spoolable compliant guide and coiled tubing to clean up a well
01/27/2011WO2010141671A3 Device for the dynamic under balance and dynamic over balance perforating in a borehole
01/27/2011US20110017471 Downhole valve assembly
01/27/2011US20110017450 Method for making gravel filters in oil wells
01/25/2011CA2558701C Method and apparatus for hanging tubulars in wells
01/25/2011CA2504988C Tubular expansion fluid production assembly and method
01/25/2011CA2468433C A wellhead assembly for communicating with the casing hanger annulus
01/20/2011WO2011008633A2 Downhole casing cutting tool
01/20/2011CA2821405A1 Wellbore laser operations
01/20/2011CA2821345A1 Wellbore laser operations
01/20/2011CA2821344A1 Wellbore laser operations
01/20/2011CA2820193A1 Downhole casing cutting tool
01/20/2011CA2767537A1 Downhole casing cutting tool
01/20/2011CA2766165A1 Wellbore laser operations
01/19/2011EP2018463B1 A whipstock
01/19/2011CN101952542A System and method for enhanced wellbore perforations
01/18/2011CA2596094C Improved milling of cemented tubulars
01/13/2011WO2011005460A2 Method for providing a temporary barrier in a flow pathway
01/13/2011WO2011004183A2 Apparatus and methods for sealing subterranean borehole and performing other cable downhole rotary operations
01/13/2011WO2010120677A3 Resilient anchor
01/13/2011US20110005768 Method and apparatus for motion compensation during active intervention operations
01/13/2011US20110005755 Downhole Casing Cutting Tool
01/13/2011CA2767293A1 Apparatus and methods for sealing subterranean borehole and performing other cable downhole rotary operations
01/13/2011CA2765401A1 Method for providing a temporary barrier in a flow pathway
01/12/2011EP2273064A1 Procedures and equipment for profiling and jointing of pipes
01/12/2011CN201705259U Casing damage cell naked eye sleeve taking and replacing circulating device
01/12/2011CN201705258U Fishable bottom plug with elastic claw for expansion pipe
01/12/2011CN201705257U Expansion pipe running assorted tool for patching of horizontal well casings
01/12/2011CN201705256U Direct connection type casing string
01/12/2011CN101942979A Anchoring ball type casing truing unit and truing method thereof
01/12/2011CN101942978A Preparation method of continuous expansion pipe with high strength and high plastic elasticity
01/11/2011CA2629525C Flush mounted tubular patch
01/06/2011US20110000670 Blowout preventers and methods of use
01/06/2011US20110000669 Perforating Gun Assembly and Method for Controlling Wellbore Pressure Regimes During Perforating
01/06/2011US20110000668 Through tubing cable rotary system
01/05/2011EP1991757B1 System for injecting a substance into the space surrounding a well tubular
01/05/2011CN201695978U Expansion pipe assembly and oil well repair construction mechanism provided with same
01/05/2011CN201695977U Expansion cone of expansion pipe assembly and expansion pipe assembly employing same
01/05/2011CN201695966U One-way locking mechanism and expansion pipe assembly for oil well subsidy construction
01/04/2011US7861783 Method for adapting a tubular element in a subsiding wellbore
01/04/2011US7861779 Method and device for establishing an underground well
01/04/2011CA2561322C A drill string incorporating an acoustic telemetry system employing one or more low frequency acoustic attenuators and an associated method of transmitting data
01/04/2011CA2512057C Coiled tubing wireline cutter
01/04/2011CA2467377C Collapsible expansion cone
01/04/2011CA2441814C Tubing seal
12/2010
12/30/2010US20100326665 Methods and apparatus for subsea well intervention and subsea wellhead retrieval
12/29/2010EP1565642B1 Tool insert
12/29/2010CN201687424U Lead sealing tool for broken casing
12/29/2010CN1957158B Temperature limited heaters used to heat subsurface formations
12/23/2010WO2010147999A2 High-ratio tubular expansion
12/23/2010US20100319907 Drilling Tool with Feed Control
12/21/2010US7854276 Methods, systems, and apparatus for production of hydrocarbons from a subterranean formation
12/16/2010WO2010143975A1 Tube sealing device and a sealing element for such a device.
12/16/2010US20100314127 Consumable downhole tools
12/15/2010EP1579103B1 Composite tool insert
12/15/2010CN201671581U Shaper for deformation of oil well casing
12/15/2010CN101915059A Process method for well completion at equal borehole diameter
12/14/2010US7849927 Running bore-lining tubulars
12/14/2010US7849926 Safety joint
12/11/2010CA2707431A1 Downhole tubular expansion tool and method
12/09/2010WO2010141401A1 Device for the focus and control of dynamic underbalance or dynamic overbalance in a wellbore
12/09/2010US20100307748 Control Line Patch
12/08/2010CN1930920B Extracting and processing hydrocarbon-bearing formations
12/08/2010CN101906947A Umbrella type variable gauge inflate tool for expansion tube
12/02/2010US20100300673 Side track bit
12/01/2010CN201661245U Windowing chip-proof joint for branch well
12/01/2010CN101240697B Minisize down-hole lateral wall annular recess cutting implement
11/2010
11/25/2010WO2010135490A2 Auxiliary conduit cutting apparatus
11/25/2010WO2010135245A2 Intelligent debris removal tool
11/25/2010WO2010135114A2 Pressure testable tubing connection
11/25/2010WO2009002618A3 Ram bop shear device
11/25/2010US20100294478 Auxiliary Conduit Cutting Apparatus
11/25/2010US20100294477 Auxiliary Conduit Cutting Apparatus
11/25/2010CA2762205A1 Auxiliary conduit cutting apparatus
11/24/2010CN201650181U Expansion pipe assembly and driving mechanism thereof
11/24/2010CN201650180U Reducing casing expander
11/24/2010CN201650179U Packer type sleeve repairing and connecting device with spiral slip
11/18/2010WO2010132672A2 Subterranean tubular cutter with depth of cut feature
11/18/2010WO2010131064A1 Bore well casting pipe driller
11/18/2010WO2008157185A3 Mechanical and fluid jet drilling method and apparatus
11/18/2010US20100288491 Subterranean Tubular Cutter with Depth of Cut Feature
11/17/2010CN101886529A Technique for repairing fault broken well and opening up passage
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