| Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780) |
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| 01/14/2015 | CN104285028A 具有自主闭合功能的井下流体流动控制系统及方法 Downhole fluid flow control system and method with independent closure function |
| 01/14/2015 | CN104278962A 一种泥浆储罐 One kind of slurry tank |
| 01/14/2015 | CN104278961A 锚杆钻孔粉尘收集装置 Bolt drilling dust collection device |
| 01/14/2015 | CN104278960A 水平井旋转射流器性能试验方法 Horizontal well performance test methods for rotating jet |
| 01/14/2015 | CN104278952A 一种水力-机械联合煤层造穴装置及使用方法 One kind of hydro - mechanical joint seam build a cave system and method of use |
| 01/13/2015 | US8931570 Reactive in-flow control device for subterranean wellbores |
| 01/13/2015 | US8931559 Downhole isolation and depressurization tool |
| 01/13/2015 | US8931548 Modular connector and method |
| 01/08/2015 | WO2015002726A1 Lubricating compositions for use with downhole fluids |
| 01/08/2015 | US20150008044 Lost Circulation Drilling Fluids Comprising Elastomeric Rubber Particles and a Method for Decreasing Whole Mud Loss Using Such Composition |
| 01/08/2015 | US20150008036 Boost system and method for dual gradient drilling |
| 01/08/2015 | US20150007995 Lubricating compositions for use with downhole fluids |
| 01/07/2015 | EP2820452A1 Methods and apparatus for transmission of telemetry data |
| 01/07/2015 | EP2819761A1 A method and apparatus for solid-liquid separation of drilling fluids for analysis |
| 01/07/2015 | CN204082058U 钻孔防爆除尘装置 Dust explosion drilling equipment |
| 01/07/2015 | CN204082057U 钻孔灌注桩临灌前气举清孔装置 Bored temporary gas lift before filling hole cleaning device |
| 01/07/2015 | CN204082056U 复合式油管循环阀 Composite tubing circulating valve |
| 01/07/2015 | CN204082055U 一种用于石油钻机立管压力保护的系统 An oil rig riser pressure protection system for |
| 01/07/2015 | CN204082054U 一种钻井泥浆净化系统装置 A drilling mud purification system devices |
| 01/07/2015 | CN204082053U 气测录井用干燥管保温装置 Gas logging device with a dry pipe insulation |
| 01/07/2015 | CN204082052U 钻井液处理装置 Drilling fluid treatment device |
| 01/07/2015 | CN204082051U 钻井液处理装置 Drilling fluid treatment device |
| 01/07/2015 | CN204082050U 一种钻机用除尘系统 One kind of drills, dust removal system |
| 01/07/2015 | CN204082049U 一种土遗址钻机专用防尘装置 One kind of soil dust ruins rig dedicated device |
| 01/07/2015 | CN204082048U 一种地质录井智能洗砂装置 One kind of geological logging intelligent sand washing equipment |
| 01/07/2015 | CN204082047U 一种钻井水龙头 One kind of faucet drilling |
| 01/07/2015 | CN204082046U 一种多功能钻井水龙头 A multifunctional faucet drilling |
| 01/07/2015 | CN204082045U 一种海洋工程用高压泥浆管连接结构 A MARINE engineering with high pressure slurry pipe connection structure |
| 01/07/2015 | CN104271881A 利用发电涡轮机的泥浆脉冲遥测机构 Utilizing mud turbine power generating pulse telemetry mechanism |
| 01/07/2015 | CN104265216A 免投捞可洗井压力开关 Well-free washable cast fishing pressure switch |
| 01/07/2015 | CN104265215A 一种利用井场储备泥浆降低压井套压的方法 A use of wellsite reserves mud casing pressure lowering killing methods |
| 01/07/2015 | CN104265214A 钻井岩屑及废液不落地自动回收处理装置 Drill cuttings and waste recycling is not automatic landing system |
| 01/07/2015 | CN104265213A 一种封闭洗井水循环处理设备 A closed loop wash well water treatment equipment |
| 01/07/2015 | CN104265212A 一种大斜度井钻井用井眼清洁工具 One kind of high-angle wells drilling borehole cleaning tools |
| 01/07/2015 | CN104265211A 使用压力场特征预测注入井异常的方法 Pressure injection well field characteristics predict abnormal way |
| 01/07/2015 | CN104265157A 煤层气钻机动力头水龙头装置 CBM drill head faucet device |
| 01/06/2015 | US8927466 Fluid pressure transmission pill |
| 01/06/2015 | US8925653 Apparatus and method for high pressure abrasive fluid injection |
| 01/06/2015 | US8925652 Lateral well drilling apparatus and method |
| 01/06/2015 | CA2799752C Method for drilling through nuisance hydrocarbon bearing formations |
| 01/06/2015 | CA2747277C Self-orienting crossover tool |
| 01/06/2015 | CA2744046C Methods and apparatuses for mixing drilling fluids |
| 01/06/2015 | CA2743142C Particulate bridging agents used for forming and breaking filtercakes on wellbores |
| 01/06/2015 | CA2677401C Equipment for intercepting and diverting a liquid circulation flow |
| 01/06/2015 | CA2631974C Metal debris cleanout system and method |
| 01/01/2015 | US20150001912 Wethead seal design for continuous mining machine |
| 01/01/2015 | US20150000985 Crosslinked n-vinylpyrrolidone polymers for use in subterranean formations and wells |
| 01/01/2015 | US20150000984 Reducing sugar-based sulfide scavengers and methods of use in subterranean operations |
| 01/01/2015 | US20150000981 Device For Improved Clean Up of Holes, and Method of Using Same |
| 01/01/2015 | US20150000978 Doping of drilling mud with a mineralogical compound |
| 01/01/2015 | US20150000915 Remediation of asphaltene-induced plugging of wellbores and production lines |
| 01/01/2015 | US20150000702 System and method for cleaning fracking sand |
| 12/31/2014 | CN204060774U 一种高突矿井钻孔的三防装置 A high outburst three anti-mine drilling equipment |
| 12/31/2014 | CN204060588U 一种外置多活塞式海洋钻井隔水管灌注阀 An outboard multi-piston marine drilling riser valve perfusion |
| 12/31/2014 | CN204060587U 自动连续反冲砂三通阀 Automatic continuous recoil sand-way valve |
| 12/31/2014 | CN204060586U 连续冲砂三通阀 Continuous sand washing three-way valve |
| 12/31/2014 | CN204060585U 连续循环阀 Continuous cycle valve |
| 12/31/2014 | CN204060584U 一种工具式重力浆泥分离装置 A tool gravity of slurry separation unit |
| 12/31/2014 | CN204060583U 一种具有反循环泥浆收集罐的泥浆循环系统 Mud circulation system having a reverse circulation mud collecting tank |
| 12/31/2014 | CN204060582U 一种气液分离式脱气器 A gas-liquid separator type degasser |
| 12/31/2014 | CN204060581U 一种风力排渣自动除尘器 A wind slagging automatic dust |
| 12/31/2014 | CN204060580U 一种高效钻孔瓦斯煤尘综合处理装置 An efficient drilling gas and coal dust comprehensive treatment device |
| 12/31/2014 | CN204060579U 岩屑回收转运装置 Debris recycling transfer device |
| 12/31/2014 | CN204060578U 高压洗井装置 High pressure flushing device |
| 12/31/2014 | CN204060577U 一种建筑现场桩孔内手工清土工具 A construction site clean soil pile hole Hand Tools |
| 12/31/2014 | CN204060576U 一种水平井防漏失双层油管隔离循环机构 A horizontal well tubing leak failure isolation double loop agency |
| 12/31/2014 | CN204060575U 一种水平井防漏失旋流冲砂器装置 A horizontal wells leak loss cyclone sand washing device |
| 12/31/2014 | CN204060504U 一种煤层气钻机动力头水龙头装置 One kind of CBM drill head faucet device |
| 12/31/2014 | CN102966304B 泥浆护壁空气潜孔锤钻具及钻井工艺 Slurry Wall DTH hammer drilling and drilling technology |
| 12/30/2014 | CA2789955C Cleaning apparatus and method for a material dryer |
| 12/30/2014 | CA2776627C Method for hydrocarbon removal and recovery from drill cuttings |
| 12/25/2014 | US20140374110 Engineering Plastic / Inorganic Fiber Blends as Lost Circulation Materials |
| 12/24/2014 | CN204041036U 注水井 Injection Wells |
| 12/24/2014 | CN204040994U 一种油田开采用的逐级解封封隔器 One kind of oil used progressively open unblocking packer |
| 12/24/2014 | CN204040989U 一种封隔器 One kind of packer |
| 12/24/2014 | CN204040961U 气举反循环高效清渣系统 Gas lift reverse circulation efficient slag system |
| 12/24/2014 | CN204040960U 钻井液回收系统 Drilling fluid recovery system |
| 12/24/2014 | CN204040959U 一种干式打钻孔口除尘装置 A dry mouth hit drilling dust removal device |
| 12/24/2014 | CN204040958U 钻孔设备的排渣装置 Slagging device drilling equipment |
| 12/24/2014 | CN204040957U 一种井下冲洗工具 A downhole tool wash |
| 12/24/2014 | CN204040956U 清除岩屑床用钻井工具 Clear cuttings bed drilling tools |
| 12/24/2014 | CN204040955U 冲砂通井器 Drifting sand washing device |
| 12/24/2014 | CN204040954U 采油井注液采油装置 Oil production wells pouring device |
| 12/24/2014 | CN204040914U 水平井安全高效泥浆钻井射流磨钻头 Safe and efficient drilling horizontal wells in the jet mill drill mud |
| 12/24/2014 | CN104246114A 处理隔水管中的气体侵入的方法 Handling riser gas invasive method |
| 12/24/2014 | CN104234648A 一种钻井液密度井下实时控制系统 One kind of real-time control system downhole drilling fluid density |
| 12/24/2014 | CN104234620A 钻岩机、旋转套筒和润滑的方法 Rock drilling machine, rotary sleeve and lubrication methods |
| 12/24/2014 | CN102808588B 钻井用井底负压发生器 Downhole drilling vacuum generator |
| 12/24/2014 | CN102791960B 铰接式前撇渣器支架 Articulated stand before skimmer |
| 12/23/2014 | US8915300 Valve for hydraulic fracturing through cement outside casing |
| 12/23/2014 | US8915299 Apparatus for use in top filling of tubulars and associated methods |
| 12/18/2014 | US20140371113 Drilling fluid processing |
| 12/18/2014 | US20140367501 Systems and methods to remove hydrocarbon oils from contaminated drill cuttings |
| 12/18/2014 | US20140367091 Wellbore fluids incorporating magnetic carbon nanoribbons and magnetic functionalized carbon nanoribbons and methods of using the same |
| 12/17/2014 | CN204024591U 水平井套压开启反循环阀 Horizontal well casing pressure reverse circulation valve open |
| 12/17/2014 | CN204024544U 一种空芯冲粧锤 A Space core makeup hammer punch |
| 12/17/2014 | CN204024543U 连续循环钻井系统 Continuous loop drilling system |
| 12/17/2014 | CN204024542U 一种钻井泵安全阀泄压流程装置 A pump pressure relief valve means drilling process |
| 12/17/2014 | CN204024541U 油井正洗定压阀 Wells are washed constant pressure valve |
| 12/17/2014 | CN204024540U 一种连续循环阀 A continuous cycle valve |