| 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) |
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| 03/20/2012 | CA2689809C Downhole cable gripping/shearing device |
| 03/20/2012 | CA2521523C Downhole polymer plug and liner and methods employing same |
| 03/15/2012 | US20120061096 Down hole equipment removal system |
| 03/15/2012 | US20120061079 Perforating and Jet Drilling Method and Apparatus |
| 03/15/2012 | US20120061078 Cement as anchor for expandable tubing |
| 03/14/2012 | EP2428640A2 Systems and methods for using rock debris to inhibit the initiation or propagation of fractures within a passageway through subterranean strata |
| 03/13/2012 | CA2636887C Tubing retrievable safety valve and method |
| 03/13/2012 | CA2606620C Method of monodiameter well construction |
| 03/13/2012 | CA2437513C Multilateral well completion |
| 03/13/2012 | CA2400093C Horizontal directional drilling in wells |
| 03/08/2012 | WO2012028616A1 Sealing system |
| 03/08/2012 | US20120055679 System and Method for Rescuing a Malfunctioning Subsea Blowout Preventer |
| 03/08/2012 | CA2809711A1 Sealing system |
| 03/07/2012 | CN202157774U 段铣工具 Segment milling tool |
| 03/06/2012 | US8127856 Well completion plugs with degradable components |
| 03/06/2012 | US8127832 Well stimulation using reaction agents outside the casing |
| 03/01/2012 | WO2012027755A1 Subsea well safing system |
| 03/01/2012 | WO2011148315A3 Method for forming slots in a wellbore casing |
| 03/01/2012 | US20120048572 Method for Removing a Consumable Downhole Tool |
| 03/01/2012 | US20120048566 Subsea Well Safing System |
| 03/01/2012 | US20120048558 Apparatus and Method for Estimating Formation Properties Using Nanoexplosive Elements |
| 03/01/2012 | CA2807659A1 Subsea well safing system |
| 02/29/2012 | EP2423428A1 Sealing system |
| 02/29/2012 | CN202152654U 自动平衡压力胀捞一体化膨胀管工具 Automatic balancing pressure expansion pipe expansion fishing tool integration |
| 02/29/2012 | CN202152653U 快钻桥塞磨鞋 Fast drilling bridge plug mill shoes |
| 02/29/2012 | CN102364029A Integrated window-opening side-drilling tool |
| 02/28/2012 | US8122958 Method and device for transferring signals within a well |
| 02/23/2012 | US20120043093 Apparatus and method |
| 02/22/2012 | EP2420645A2 Earth boring drill bits with casing component drill out capability, cutting elements for same, and methods of use |
| 02/22/2012 | EP2419601A1 Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| 02/22/2012 | CN101619649B 一种非爆炸性的金属管环形切割装置 A non-explosive metal tube an annular cutting means |
| 02/21/2012 | US8118099 Method and apparatus for forming and sealing a hole in a sidewall of a borehole |
| 02/21/2012 | US8118098 Flow control system and method for use in a wellbore |
| 02/21/2012 | US8118088 Shear activated safety valve system |
| 02/21/2012 | US8117883 Tubing expansion |
| 02/21/2012 | CA2616055C System and methods for tubular expansion |
| 02/16/2012 | WO2012019422A1 Method for manufacturing continuous expansion pipe with high strength and ductility |
| 02/16/2012 | WO2011156107A3 Slickline run hydraulic motor drive tubing cutter |
| 02/16/2012 | US20120037374 Plug removal and setting system |
| 02/14/2012 | US8114817 Filtercake removal composition and system |
| 02/14/2012 | US8113290 Dissolvable connector guard |
| 02/14/2012 | US8113271 Cutting tool for cutting a downhole tubular |
| 02/09/2012 | WO2012018706A1 Controllably installed multilateral completions assembly |
| 02/09/2012 | US20120031626 Consumable Downhole Tools |
| 02/08/2012 | EP2414124A2 Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms |
| 02/08/2012 | CN1954131B 使用氮化物绝缘的地下电加热器 Nitride insulated underground electric heater |
| 02/01/2012 | CN202132009U 新型磨鞋 The new mill shoes |
| 02/01/2012 | CN202132008U Expanding and milling device for inner guide sleeve |
| 02/01/2012 | CN102337849A Mechanical lock cylinder |
| 02/01/2012 | CN102337848A Locking mechanism for expansion cone |
| 01/31/2012 | CA2492209C Tubular slip device and method |
| 01/26/2012 | US20120018164 Clamp for a well tubular |
| 01/26/2012 | US20120018158 Cutting Assembly and Method of Cutting Coiled Tubing |
| 01/24/2012 | CA2653100C Consumable downhole tools |
| 01/19/2012 | WO2011148192A3 System and method for severing a tubular |
| 01/19/2012 | WO2011148191A3 Tubular severing system and method of using same |
| 01/19/2012 | WO2011148190A3 Tubular severing system and method of using same |
| 01/18/2012 | CN102322234A Sliding block guiding hydraulic cutting knife |
| 01/12/2012 | WO2012005167A1 Method for sealing the flow of petroleum caused by damage of underwater oil well steel tube |
| 01/12/2012 | WO2011143276A3 Undersea leak remediation device and method |
| 01/12/2012 | US20120006558 Submergible oil well sealing device and method for sealing underwater oil wells |
| 01/12/2012 | US20120006547 Severing of downhole tubing with associated cable |
| 01/12/2012 | US20120006529 Blowout preventers and methods of use |
| 01/11/2012 | CN202108450U Guide shoe bottom block for expansion pipe |
| 01/11/2012 | CN202108449U Tube-expanding type compensating and reinforcing tool |
| 01/11/2012 | CN202108448U Sealing expansion pipe for drilling oil |
| 01/11/2012 | CN202108447U Casing milling tool assembly |
| 01/11/2012 | CN101942978B Preparation method of continuous expansion pipe with high strength and high plastic elasticity |
| 01/05/2012 | WO2012002861A1 Device for redirecting the flow of a fluid in a first pipe or tube to at least a second pipe, tube or hose without stopping the flow of the fluid |
| 01/05/2012 | US20120000656 Apparatus And Methods For Producing Oil and Plugging Blowouts |
| 01/03/2012 | USRE43054 Method and apparatus for casing exit system using coiled tubing |
| 01/03/2012 | CA2646472C Method for reducing diameter reduction near ends of expanded tubulars |
| 01/03/2012 | CA2474998C Well system |
| 12/29/2011 | WO2011163097A2 Apparatus and method for containing oil from a deep water oil well |
| 12/29/2011 | US20110315398 Plug device and method of using same |
| 12/28/2011 | EP2400109A2 Apparatus and method for severing a wellbore tubular |
| 12/28/2011 | CN202091270U 修井补套增压器 Sets up workover turbocharger |
| 12/28/2011 | CN102296939A 自动平衡压力胀捞一体化膨胀管工具及其使用方法 Automatic integration of the equilibrium pressure expansion pipe expansion of fishing tools and methods of use |
| 12/27/2011 | US8082980 Downhole well access line cutting tool |
| 12/22/2011 | WO2011159420A2 Power supply system and method with remote variable frequency drive (vfd) |
| 12/22/2011 | US20110308813 Tubing shoe |
| 12/21/2011 | CN102287155A 双管针刺输油管重置修复装置及其修复方法 Device and method for repairing double-barreled acupuncture pipeline repair reset |
| 12/20/2011 | CA2646440C Method for reducing diameter reduction near ends of expanded tubulars |
| 12/15/2011 | WO2011156107A2 Slickline run hydraulic motor drive tubing cutter |
| 12/15/2011 | US20110303407 Consumable downhole tools |
| 12/15/2011 | CA2802051A1 Slickline run hydraulic motor driven tubing cutter |
| 12/14/2011 | CN202073519U 一种修复套管错断的高效工具 An efficient tool to repair the casing off wrong |
| 12/14/2011 | CN202073518U 自压式油管开窗装置 Self-pressure tubing windowing means |
| 12/14/2011 | CN102278076A 限位短节 Limit short section |
| 12/14/2011 | CN102278070A 钻压稳定器 WOB Stabilizer |
| 12/13/2011 | US8074332 Method for removing oilfield mineral scale from pipes and tubing |
| 12/08/2011 | WO2011151139A1 Support device of equipment inside a well, a process for fixing it and a process for placing such equipment |
| 12/08/2011 | WO2011127411A3 Fluid displacement methods and apparatus for hydrocarbons in subsea production tubing |
| 12/08/2011 | US20110297379 Slickline Run Hydraulic Motor Driven Tubing Cutter |
| 12/07/2011 | EP2391793A2 Apparatus and method for setting a tool in a borehole |
| 12/07/2011 | CN102269187A 修井补套增压器 Sets up workover turbocharger |
| 12/07/2011 | CN101915059B 等井径钻完井工艺方法 Such as drilling and completion process for caliper |
| 12/06/2011 | US8071510 Method of increasing lubricity of brine-based drilling fluids and completion brines |
| 12/06/2011 | CA2523106C Methods and apparatus for manufacturing of expandable tubular |
| 12/01/2011 | WO2011148315A2 Method for forming slots in a wellbore casing |