| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/21/2011 | CN201982061U 方箱式油井玻璃钢保温罩 Square box type fiberglass insulation cover wells |
| 09/21/2011 | CN201982057U 一种逐级解封可洗井式封隔器 One kind of gradual re-opened washable Pit packer |
| 09/21/2011 | CN201982056U 一种压裂封隔器 One kind of fracturing packer |
| 09/21/2011 | CN201982055U 多功能封井器 Multifunction blowout preventer |
| 09/21/2011 | CN201982054U 杆式泵用防喷器 Rod pump with BOP |
| 09/21/2011 | CN201982053U 井喷井漏封堵针 Well blowout leak sealing needle |
| 09/21/2011 | CN201982052U 石油天然气井口操作平台 Oil and gas wellhead platform |
| 09/21/2011 | CN201982051U 一种油井井口封井器 One kind wellhead blowout preventer |
| 09/21/2011 | CN201982050U 油井密码防盗箱 Well password theft case |
| 09/21/2011 | CN201982042U 一种简易取盘根工具 A simple tool to take root |
| 09/21/2011 | CN201982040U 盘根起出器 Packing from a reader |
| 09/21/2011 | CN201982035U 独立式高压油水气井不压井作业装置 Independent high-pressure oil wells snubbing unit |
| 09/21/2011 | CN102197192A Injecting device, drill rig and method of rock bolting |
| 09/21/2011 | CN102197189A Downhole tool with load diverting system and method |
| 09/21/2011 | CN102192209A Reversing valve hermetically-sealed structure of remote control gas path |
| 09/21/2011 | CN102191926A Long-distance adjustable control valve |
| 09/21/2011 | CN102191925A External telescopic blow-out preventing pipe |
| 09/21/2011 | CN102191924A Remote electric pneumatic control system |
| 09/21/2011 | CN101705788B Construction method using blowout plug to shield oblique drilling hole |
| 09/20/2011 | US8020618 Solid gas migration control additives based on latex powders for cementing applications |
| 09/20/2011 | CA2674823C Hydraulic packer with thermal isolation member |
| 09/20/2011 | CA2663337C Apparatus and method for injecting fluids in a subterranean location |
| 09/20/2011 | CA2641302C Wellhead completion assembly capable of versatile arrangements |
| 09/20/2011 | CA2595706C Cup tool, cup tool cup and method of using the cup tool |
| 09/20/2011 | CA2579116C Eutectic material-based seal element for packers |
| 09/16/2011 | CA2733372A1 Well head lubricator assembly |
| 09/15/2011 | WO2011110819A2 Seal assembly and method of forming a seal assembly |
| 09/15/2011 | WO2011110808A2 Multiple stage cementing tool with expandable sealing element |
| 09/15/2011 | WO2011090639A3 Method and apparatus for releasing a packer |
| 09/15/2011 | WO2011060897A4 Compositions and methods for mitigation of annular pressure buildup in subterranean wells |
| 09/15/2011 | WO2010046050A3 Apparatus and methods for improved cement plug placement |
| 09/15/2011 | US20110221138 High temperature/high pressure seal |
| 09/15/2011 | US20110220370 Method and system for fixing an element in a borehole |
| 09/15/2011 | US20110220369 Methods and apparatus relating to expansion tools for tubular strings |
| 09/15/2011 | US20110220368 wireline lubricator |
| 09/15/2011 | US20110220362 Method and Materials for Proppant Flow Control With Telescoping Flow Conduit Technology |
| 09/15/2011 | US20110220361 Method and Materials for Proppant Fracturing With Telescoping Flow Conduit Technology |
| 09/15/2011 | US20110220356 Multiple stage cementing tool with expandable sealing element |
| 09/15/2011 | CA2792340A1 Seal assembly and method of forming a seal assembly |
| 09/14/2011 | EP2364394A1 Single packer structure with sensors |
| 09/14/2011 | CN201972682U 一种水平井注气采油封隔工艺管柱 A horizontal oil well gas injection process column packer |
| 09/14/2011 | CN201972676U 水平井地层供液流量控制管柱 Formation horizontal wells for fluid flow control column |
| 09/14/2011 | CN201972659U 多功能注浆机 Multifunction grouting machine |
| 09/14/2011 | CN201972658U 一种油管内堵塞器 One kind of tubing clogged filter |
| 09/14/2011 | CN201972657U 一种水平井双向锚定完井悬挂封隔器 A horizontal well completions bi-anchored suspension packer |
| 09/14/2011 | CN201972656U 煤矿瓦斯抽采孔快速封隔器 Coal mine gas drainage hole fast packer |
| 09/14/2011 | CN201972655U 一种裸眼完井压裂封隔器 One kind of openhole completion fracturing packer |
| 09/14/2011 | CN201972654U 一种新型热敏封隔器 A novel thermal packer |
| 09/14/2011 | CN201972653U 光杆井喷器 Blowout control rod |
| 09/14/2011 | CN201972652U Double-buckle cutting silk |
| 09/14/2011 | CN201972651U 抽油井光杆密封盘根 Rod pumping wells sealed packing |
| 09/14/2011 | CN201972650U 作业井口排液器 Job wellhead liquid discharge device |
| 09/14/2011 | CN201972649U 抽油机光杆旋压密封器 Pumping light spinning rod sealer |
| 09/14/2011 | CN201972648U 欠平衡钻井旋转控制装置的上密封体 On UBD seal rotating control device |
| 09/14/2011 | CN201972647U 自润滑注气防喷井口密封器 Self-lubricating gas injection wellhead blowout preventer sealer |
| 09/14/2011 | CN201972646U 一种井口保护器 One kind of wellhead protection |
| 09/14/2011 | CN201972645U 多功能抽油机井口光杆密封装置 Multifunction pumping rod seal the wellhead |
| 09/14/2011 | CN201972644U 一种六级分支井窗口连接装置 One kind of six wells window connecting device |
| 09/14/2011 | CN201972616U 旋塞安全防滑卡 Cock slip card security |
| 09/14/2011 | CN1965146B Aqueous-based tackifier fluids and methods of use |
| 09/14/2011 | CN102187052A Systems and methods of forming subsurface wellbores |
| 09/14/2011 | CN102182439A Balanced-pressure perforation/negative-pressure backflow process |
| 09/14/2011 | CN102182423A Sleeve valve opening/closing device |
| 09/14/2011 | CN102182421A Segmented water plugging method of liquid bridge plug of horizontal well |
| 09/14/2011 | CN102182420A Perfusion packer |
| 09/14/2011 | CN102182419A Hydraulic connecting device for deepwater pipeline |
| 09/14/2011 | CN102182418A Joint device for underwater dry-type Christmas tree sealed cabin |
| 09/14/2011 | CN102181274A Thixotropic chemical sealing channeling agent |
| 09/13/2011 | US8016042 Stress distributing wellhead connector |
| 09/13/2011 | US8016039 Method of reducing water influx into gas wells |
| 09/13/2011 | US8016034 Methods of fluid placement and diversion in subterranean formations |
| 09/13/2011 | US8016033 Continuous flow drilling systems and methods |
| 09/13/2011 | US8016031 Erosion resistant frac head |
| 09/13/2011 | CA2514136C Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| 09/13/2011 | CA2510461C Wellbore consolidating tool for rotary drilling applications |
| 09/09/2011 | WO2011109577A1 Tattle-tale apparatus |
| 09/09/2011 | WO2011109074A1 Riserless single trip hanger and packoff running tool |
| 09/09/2011 | WO2011107745A2 System and method for fluid diversion and fluid isolation |
| 09/09/2011 | WO2011107734A2 Super shoe swell packer |
| 09/09/2011 | WO2011056394A3 Systems and methods for initiating annular obstruction in a subsurface well |
| 09/09/2011 | WO2009135220A3 Fill up and circulation tool and mudsaver valve |
| 09/09/2011 | CA2808529A1 System and method for fluid diversion and fluid isolation |
| 09/09/2011 | CA2791634A1 Super shoe swell packer |
| 09/08/2011 | US20110214920 Universal drilling and completion system |
| 09/08/2011 | US20110214882 System and method for safe well control operations |
| 09/08/2011 | US20110214864 Invert drilling fluids having enhanced rheology and methods of drilling boreholes |
| 09/08/2011 | US20110214863 Super shoe swell packer |
| 09/08/2011 | US20110214861 System and method for fluid diversion and fluid isolation |
| 09/08/2011 | US20110214855 Expandable Device for Use in a Well Bore |
| 09/07/2011 | EP2363573A1 Sealant for forming durable plugs in wells and methods for completing or abandoning wells |
| 09/07/2011 | EP2363572A1 Apparatus and method for severing a wellbore tubular |
| 09/07/2011 | EP1720954B1 Method of flocculating suspended particles |
| 09/07/2011 | CN201963288U 闸板防喷器/钻机刹车联动防提、防挂安全装置 Ram BOP / rig brake linkage anti mention, anti-hanging safety device |
| 09/07/2011 | CN201963283U 双油管高温气举工艺管柱 Dual tubing string of high temperature gas-lift technology |
| 09/07/2011 | CN201963269U 碰泵器悬挂组合装置 Touch the pump is suspended combination device |
| 09/07/2011 | CN201963260U 一种起下抽油杆用刮油防喷装置 One kind of scraping oil from under the rod blowout preventer |
| 09/07/2011 | CN201963251U 可快速钻塞盲板 Blind plug for quick drill |
| 09/07/2011 | CN201963250U Hydraulic graded cementing device capable of closing holes in dual manner |
| 09/07/2011 | CN201963249U 一种可洗井注水封隔器 One kind of wash water injection wells packer |
| 09/07/2011 | CN201963248U 稠油井防污染防护罩 Heavy oil pollution shield |