| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/28/2012 | US8122948 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 02/28/2012 | US8122906 Pressure driven apparatus for sequential control of a cementing head |
| 02/25/2012 | CA2743825A1 Oil catch pan |
| 02/23/2012 | WO2012024498A2 Wellbore service fluid and methods of use |
| 02/23/2012 | WO2012024440A2 Retrieving a subsea tree plug |
| 02/23/2012 | WO2012024063A2 Retractable petal collet backup for a subterranean seal |
| 02/23/2012 | WO2012024041A1 Retractable downhole backup assembly for circumferential seal support |
| 02/23/2012 | WO2012023074A1 A rapid kill and restoration system for blowout wells |
| 02/23/2012 | WO2012022364A1 Compositions and methods for well completions |
| 02/23/2012 | WO2012003146A3 Blowout preventer monitoring system and method of using same |
| 02/23/2012 | US20120043726 Multiple sealing element assembly |
| 02/23/2012 | US20120043134 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 02/23/2012 | US20120043095 Dual packer for a horizontal well |
| 02/23/2012 | US20120043089 Retrieving a subsea tree plug |
| 02/23/2012 | US20120043079 Sand control well completion method and apparatus |
| 02/23/2012 | US20120043074 High pressure oil pipe bullet plug |
| 02/23/2012 | CA2808358A1 Well intervention |
| 02/23/2012 | CA2808203A1 Compositions and methods for well completions |
| 02/23/2012 | CA2807512A1 Retractable petal collet backup for a subterranean seal |
| 02/23/2012 | CA2807485A1 Retractable downhole backup assembly for circumferential seal support |
| 02/22/2012 | EP2420647A2 Multiple sealing element assembly for a rotatable sealing device |
| 02/22/2012 | EP2225436B1 Subsea horizontal christmas three |
| 02/22/2012 | CN202148879U 水平井悬挂封隔器 Horizontal wells suspension packer |
| 02/22/2012 | CN202148878U Blowout preventer |
| 02/22/2012 | CN202146834U 一种免清洗注浆泵 A no-clean injection pump |
| 02/22/2012 | CN1985067B 控制颗粒的方法和涂布地下岩层的一部分表面的方法以及控制碎屑颗粒的处理流体 And a method of controlling the particle surface of the coated portion of the subterranean formation, and control of the treatment fluid detrital |
| 02/22/2012 | CN102359358A Self-expansion packer for pipeline crossing |
| 02/22/2012 | CN102359357A Method and device for expanding body under overpressure |
| 02/22/2012 | CN102359356A Extending the life of a compromised umbilical |
| 02/22/2012 | CN102359355A Concentric-tube double-tube steam injection wellhead device |
| 02/22/2012 | CN101382051B 空心杆掺水井口装置 Hollow rod watered wellhead |
| 02/22/2012 | CN101302922B 水平定向钻穿越砂卵砾石地层的施工方法 Horizontal directional drilling construction methods sand gravel formations |
| 02/22/2012 | CN101128645B 关于液压防喷器闸板的改进 About hydraulic ram blowout preventer Improvement |
| 02/21/2012 | US8118092 Swelling delay cover for a packer |
| 02/21/2012 | US8118090 Hybrid wellhead system and method of use |
| 02/20/2012 | CA2713684A1 High pressure/high temperature packer seal |
| 02/16/2012 | WO2012021654A2 Dissolvable bridge plug |
| 02/16/2012 | WO2012021555A2 Fill up tool |
| 02/16/2012 | WO2012019422A1 Method for manufacturing continuous expansion pipe with high strength and ductility |
| 02/16/2012 | WO2011073610A3 Sealing method and apparatus |
| 02/16/2012 | US20120038111 Device for passive pressure sealing |
| 02/16/2012 | US20120037382 Running Tool |
| 02/16/2012 | US20120037375 Emergency blowout preventer (ebop) control system using an autonomous underwater vehicle (auv) and method of use |
| 02/16/2012 | US20120037361 Arrangement and method for detecting fluid influx and/or loss in a well bore |
| 02/16/2012 | US20120037355 Retractable Petal Collet Backup for a Subterranean Seal |
| 02/16/2012 | CA2808081A1 Dissolvable bridge plug |
| 02/16/2012 | CA2807650A1 Fill up tool |
| 02/15/2012 | EP2418348A2 Filler rings for swellable packers |
| 02/15/2012 | EP2417327A1 Nested cylinder compact blowout preventer |
| 02/15/2012 | EP2417213A1 Compositions and methods for servicing subterranean wells |
| 02/15/2012 | CN202144739U 高压防盗快速测压取样接头 Pressure sampling high pressure quick connector theft |
| 02/15/2012 | CN202144734U 用于管线穿越的自膨胀封隔器 Since the expansion of the pipeline crossing for packer |
| 02/15/2012 | CN202144733U 桥塞验封封隔器 Bridge plug inspection Packers |
| 02/15/2012 | CN202144731U 油气井尾管悬挂器内通径控制器 Bore wells within the controller liner hanger |
| 02/15/2012 | CN102352734A Ground blowout preventer control device with function of preventing lifting breakage of drill column |
| 02/15/2012 | CN102352729A Device for quickly delivering tool for quickly spraying |
| 02/15/2012 | CN102350724A Manufacturing method of artificial core with crevices for simulated leaking stoppage experiment |
| 02/15/2012 | CN101634218B 具有钻孔控制注浆装置的组合式钻具 Grouting drilling control apparatus having a combined drill |
| 02/15/2012 | CN101397895B 多功能光杆密封装置 Multifunction rod seal |
| 02/14/2012 | US8113293 Single packer structure for use in a wellbore |
| 02/14/2012 | US8113276 Downhole apparatus with packer cup and slip |
| 02/14/2012 | CA2703426C Radial ball injecting apparatus for wellbore operations |
| 02/14/2012 | CA2501480C System and method for installation and use of devices in microboreholes |
| 02/10/2012 | CA2711700A1 Seal assembly for a pressure plate in a blowout preventer |
| 02/09/2012 | WO2012018937A2 Control line installation unit |
| 02/09/2012 | WO2012018469A1 Casing hanger lockdown sleeve |
| 02/09/2012 | WO2012017358A2 System and method for producing high pressure foam slurry |
| 02/09/2012 | WO2011127422A3 System and method for subsea power distribution network |
| 02/09/2012 | WO2011012838A3 Measurement apparatus |
| 02/09/2012 | US20120031678 Method of forming a bore |
| 02/09/2012 | US20120031623 Apparatus and method |
| 02/09/2012 | US20120031614 Apparatus and methods for well cementing |
| 02/09/2012 | US20120031608 Filler Rings for Swellable Packers |
| 02/09/2012 | DE102010033519A1 Method for introducing geothermal probe into bore hole, involves supporting borehole during formation and grouting of borehole, and coupling probe with drill string whose drill head is pushed to central portion of borehole |
| 02/09/2012 | CA2807146A1 Control line installation unit |
| 02/09/2012 | CA2747149A1 Filler rings for swellable packers |
| 02/08/2012 | EP2415962A1 Supplying power to underwater devices |
| 02/08/2012 | EP2415961A1 Supplying power to underwater devices |
| 02/08/2012 | EP2414626A1 Liner hanger |
| 02/08/2012 | EP2414625A1 Equipment and method for reinforcing a borehole of a well while drilling |
| 02/08/2012 | EP2414624A2 Seal assembly |
| 02/08/2012 | EP2414623A2 Lining of wellbore tubing |
| 02/08/2012 | EP2414622A2 Anchor and hydraulic setting assembly |
| 02/08/2012 | CN202140075U 井下两次点火射孔系统 Downhole perforating twice ignition system |
| 02/08/2012 | CN202140063U 一种压缩式封隔器胶筒 A compression packer cones |
| 02/08/2012 | CN202140062U 液压免钻尾管悬挂封隔器 Hydraulic drill-free liner hanger packer |
| 02/08/2012 | CN202140061U 海底防喷器组及其控制系统 Subsea BOP stack and control system |
| 02/08/2012 | CN202140060U 抽油井密封装置 Pumping oil seals |
| 02/08/2012 | CN202140059U 一种修井用的柔性法兰 One kind of workover with flexible flange |
| 02/08/2012 | CN202140058U 减压盘根盒 Vacuum packing boxes |
| 02/08/2012 | CN202140035U 直连式固井套管柱 Direct-attached cementing casing strings |
| 02/08/2012 | CN102348865A Well tools utilizing swellable materials activated on demand |
| 02/08/2012 | CN102345451A Apparatus and method for fluidically coupling tubular sections and tubular system formed thereby |
| 02/07/2012 | USRE43168 Polymeric latexes prepared in the presence of 2-acrylamido-2-methylpropanesulfonate |
| 02/07/2012 | US8109340 High-pressure/high temperature packer seal |
| 02/07/2012 | US8109337 Alignment of BOP stack to facilitate use of a rotating control device |
| 02/07/2012 | US8109335 Degradable diverting agents and associated methods |
| 02/07/2012 | CA2680428C Power slip assembly for wellhead casing and wellbore tubing |
| 02/07/2012 | CA2674135C Method for wellhead high integrity protection system |
| 02/07/2012 | CA2635839C Starch-(meth)acrylate graft copolymer, oil-swellable material and oil-and water-swellable material comprising the same, and sealing articles and packers prepared from said swellable material |