| Patents for E21B 31 - Fishing for or freeing objects in boreholes or wells (3,788) |
|---|
| 10/23/2014 | US20140311733 Overshot |
| 10/21/2014 | US8863851 Milled packer retaining tool with reverse circulation |
| 10/14/2014 | US8860417 Downhole activation system using magnets and method thereof |
| 10/14/2014 | US8857508 Valve assembly |
| 10/08/2014 | EP2785959A1 Pulling tool |
| 10/07/2014 | US8851796 Pipe retriever |
| 10/07/2014 | US8851191 Selectively fired high pressure high temperature back-off tool |
| 10/07/2014 | US8851175 Instrumented disconnecting tubular joint |
| 09/30/2014 | US8844630 Adjustable engagement system for tool removal and method of use |
| 09/30/2014 | US8844618 Smart drop-off tool and hang-off tool for a logging string |
| 09/24/2014 | EP2780537A1 Apparatus and method for cutting and pulling of casing |
| 09/18/2014 | US20140262277 Downhole tool for debris removal |
| 09/12/2014 | WO2014138117A1 Downhole tool for removing a casing portion |
| 09/12/2014 | WO2014137973A1 Method and apparatus for removing unexpanded shoe |
| 09/09/2014 | CA2568053C Ball-activated mechanism for controlling the operation of a downhole tool |
| 09/03/2014 | EP2771537A1 A downhole tool |
| 09/02/2014 | US8820403 Heavy duty rope sockets and related methods |
| 09/02/2014 | US8820398 Down hole tool with adjustable fluid viscosity |
| 09/01/2014 | CA2808708A1 Shutoff valve |
| 08/28/2014 | WO2014128501A1 Marine connector |
| 08/28/2014 | WO2014028254A3 Hydraulic jar with low reset force |
| 08/21/2014 | WO2013188093A3 Application of high intensity focused ultrasound to the displacement of drilling mud |
| 08/19/2014 | CA2632290C Double-acting jar |
| 08/14/2014 | WO2014123656A1 Runnable member catcher, system and method of removing same |
| 08/13/2014 | CN203769747U 一种井口内的收球器 Received the ball is within a wellhead |
| 08/13/2014 | CN203769700U 套铣捞筒 Washover fishing barrel |
| 08/13/2014 | CN203769699U 带有皮碗的筛管冲洗打捞器 Screen with a cup of washing fisher |
| 08/13/2014 | CN203769698U 深水井下用钻具通径装置 Mine with deepwater drill diameter device |
| 08/13/2014 | CN103982152A 一种钢丝绳送井和回收的装置 One kind of rope feeding device and recovery wells |
| 08/12/2014 | US8800690 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 08/12/2014 | US8800660 Debris catcher for collecting well debris |
| 08/07/2014 | WO2014120873A1 Jarring tool |
| 08/06/2014 | CN203756102U 一种简易抽油杆接箍捞矛 A simple spear fishing rod coupling |
| 08/06/2014 | CN203756101U 一种穿芯双滑块打捞筒 One kind of wear-core dual slider overshot |
| 08/06/2014 | CN203756100U 套铣对扣循环可退式组合打捞器 Washover retreat buckle loop combo fisher |
| 08/06/2014 | CN203756099U 一种五级分支井主分支井眼连接器打捞工具 One kind of five branches of the main branch of the well borehole connector fishing tools |
| 08/06/2014 | CN103967440A 一种油田井下打捞装置 One kind of downhole fishing equipment |
| 08/06/2014 | CN103967439A 一种连续套铣打捞一体化工具及其套铣打捞方法 A continuous set of integrated tools and milling salvage salvage method Washover |
| 08/06/2014 | CN102536147B 挤注型可退捞筒 Squeeze tube type fishing retreat |
| 07/30/2014 | EP2758620A2 Well tractor with active traction control |
| 07/30/2014 | CN203742562U 一种多功能采油车 A multifunctional car oil |
| 07/30/2014 | CN203742511U 一种分体式打捞杯 A separate-type salvage Cup |
| 07/30/2014 | CN103953306A 一种大口径钻头打捞器 One kind of large diameter drill fisher |
| 07/30/2014 | CN103953305A 减压井落物抓取装置 Relief wells litter gripping device |
| 07/29/2014 | US8789598 Jarring systems and methods of use |
| 07/23/2014 | CN203729935U 一种测井用自爬行通径器 Logging and calipers with self crawling through |
| 07/23/2014 | CN103939045A 牙轮钻头掉落钻牙的打捞装置 Drop cone bit drilling of salvage equipment |
| 07/23/2014 | CN103939043A 一种修复细管井淤堵的方法 A prosthetic fine tubewells clogging methods |
| 07/22/2014 | US8783745 Fail safe locking overshot device |
| 07/22/2014 | US8783354 Apparatus and method for adjusting spring preload in a downhole tool |
| 07/22/2014 | US8783353 Increased energy impact tool |
| 07/22/2014 | CA2782660C Wellbore knock-out chamber and related methods of use |
| 07/17/2014 | WO2014109868A1 Liner hanger/packer apparatus with pressure balance feature on anchor slips to facilitate removal |
| 07/17/2014 | WO2014109643A1 Petroleum well drill- or coiled tubing string mounted fishing tool |
| 07/17/2014 | US20140196911 Electromagnetically activated jarring |
| 07/16/2014 | CN203716906U 软油管打捞筒 Soft tubing overshot |
| 07/16/2014 | CN203716905U 一种绳索取芯钻具打捞器 One kind of rope core drill fisher |
| 07/16/2014 | CN203716904U 一种履带式瓦斯抽放孔修复作业机 Tracked gas drainage hole repair job machine |
| 07/16/2014 | CN103930643A 用于切割和牵引套管的装置和方法 Means and method for cutting and traction sleeve |
| 07/16/2014 | CN103924940A 电动打捞器 Electric fisher |
| 07/09/2014 | EP2751380A1 Borehole surveying tool deployment |
| 07/09/2014 | CN203702056U 一种钻孔孔底落物打捞器 Litters for a drilled hole bottom fisher |
| 07/09/2014 | CN203702055U 可磨铣式丢手封隔器打捞工具 Milling formula can throw hand packer fishing tools |
| 07/09/2014 | CN203702054U 多用途油田电子压力计组合打捞筒 Multipurpose field of electronic manometer combination overshot |
| 07/09/2014 | CN203702053U 导向锥 Guide cone |
| 07/09/2014 | CN203702052U 一种捞球工具 One kind of fishing the ball tool |
| 07/09/2014 | CN103912232A 一种可退式油管密封打捞装置 One kind of retreat Tubing Seal salvage device |
| 07/09/2014 | CN103912231A 钻杆公螺纹打捞器 Male threaded drill fisher |
| 07/02/2014 | EP2748415A2 Variable frequency fluid oscillators for use with a subterranean well |
| 07/02/2014 | CN203685100U 分层充填防砂捕球器 Layering sand filter to catch the ball |
| 07/02/2014 | CN203685099U 一种连续油管打捞颚式钳 A continuous tubing salvage jaw pliers |
| 07/02/2014 | CN203685098U 可循环固定卡瓦式外打捞装置 Recyclable fixed kava ceremony outside salvage device |
| 07/02/2014 | CN203685097U 一种打捞送风管的器具 An air tube apparatus salvage |
| 07/02/2014 | CN203685096U 一种带有震击器移动固定装置的震击器试验台 Jar Jar a mobile device with a fixed test bed |
| 07/02/2014 | CN203685095U 一种震击器试验台 One kind of jar test rig |
| 07/02/2014 | CN203684227U 一种高压旋喷法桩底排渣施工用的封堵工具 A high-pressure jet grouting pile bottom slag plugging tool used in construction |
| 07/02/2014 | CN103899267A 一种履带式瓦斯抽放孔修复作业机 Tracked gas drainage hole repair job machine |
| 06/26/2014 | WO2014099390A1 System and method for conveying |
| 06/26/2014 | US20140174832 Overshot assembly and systems and methods of using same |
| 06/25/2014 | EP2744971A2 Debris barrier for hydraulic disconnect tools |
| 06/25/2014 | CN203669811U 一种抽油杆接箍捞矛 One kind of spear fishing rod coupling |
| 06/25/2014 | CN203669810U 井下作业用打捞器 Downhole with fisher |
| 06/25/2014 | CN203669809U 一种可退式双卡瓦捞筒 One kind of double slips fishing retreat barrel |
| 06/25/2014 | CN203669808U 一种地面下击器 A ground attack under control |
| 06/25/2014 | CN203669807U 采油防砂解堵装置 Oil sand plugging device |
| 06/18/2014 | CN203655209U 一种可拆式外捞矛 One kind of removable outer spear |
| 06/18/2014 | CN203655208U 一种打捞被泥沙掩埋落鱼的打捞矛 One kind of salvage was buried in mud off the fish spear |
| 06/18/2014 | CN203655207U 修井用连续油管打捞器 With coiled tubing workover fisher |
| 06/18/2014 | CN203655206U 一种回收油井气钻中封隔器的装置 A process for recovering oil gas drilling in the packer device |
| 06/18/2014 | CN203655205U 一种局部反循环打捞器 A topical anti-cycle fisher |
| 06/18/2014 | CN203655204U 孔底孤石抓取装置及旋挖钻机 Hole bottom boulder crawling device and rotary drilling rig |
| 06/18/2014 | CN203655203U 一种可更换杯筒的打捞杯 A replaceable cartridge salvage cup cup |
| 06/18/2014 | CN203655197U 高效投捞器 Efficient and pulling devices |
| 06/18/2014 | CN103867166A Device and method for supercritical carbon dioxide high-pressure jet flow plug removal seepage enhancement |
| 06/18/2014 | CN103867156A Remote control operation machine-assisted releasing device used for oil-water well repair |
| 06/11/2014 | CN203640673U 预置式堵塞器及其投放、打捞工具 Preset blockage and its delivery, fishing tools |
| 06/11/2014 | CN203640654U 一种水平井倒扣工艺管柱 A horizontal well technology upside down column |
| 06/11/2014 | CN203640653U 一种钻头打捞装置 A drill salvage device |
| 06/05/2014 | WO2014085484A1 Power tong and backup tong apparatus |
| 06/04/2014 | CN203626680U 一种多功能抽油杆打捞器 A versatile rod fisher |