| 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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| 02/04/2015 | CN104329027A 一种双壁钻杆反循环钻井射流泵钻头 One kind of double-wall drill pipe drill jet pump reverse circulation drilling |
| 02/04/2015 | CN104329026A 一种塌漏层段表层连续钻完井装置及工艺 One kind of collapse drain intervals continuous surface drilling and completion equipment and technology |
| 02/04/2015 | CN104329021A 具有导向功能的转盘钻机 Turntable rig having a guide function |
| 02/04/2015 | CN103104191B 超大孔径桩基钻孔机 Large aperture pile drilling machine |
| 02/04/2015 | CN102587824B 高风压冲击器 High pressure impactor |
| 02/03/2015 | US8946133 Method and composition for curing lost circulation |
| 02/03/2015 | US8946130 Methods for increase gas production and load recovery |
| 02/03/2015 | US8945443 Process for utilising waste drill cuttings in plastics |
| 02/03/2015 | US8945402 Apparatus and method for the treatment of oil, water, cuttings, sand, soil and clay mixtures |
| 02/03/2015 | US8945395 Settling vessel and method of use |
| 02/03/2015 | US8944187 Vacuum assisted post hole digger tool and apparatus with rotary clog breaker |
| 02/03/2015 | US8944169 Apparatus and method for fracturing a well |
| 02/03/2015 | CA2791719C Flow control arrangement and method |
| 02/03/2015 | CA2736199C Pulse generator |
| 01/30/2015 | CA2872736A1 Flow controlling downhole tool |
| 01/29/2015 | WO2015013405A1 Apparatus, system and/or method for modular filter screens |
| 01/29/2015 | WO2015013051A1 Mud hydraulic top drive |
| 01/29/2015 | WO2015012999A1 One trip drill and casing scrape method and apparatus |
| 01/29/2015 | WO2015012972A1 Tubular string displacement assistance |
| 01/29/2015 | WO2015012823A1 Methods and systems for using a well evaluation pill to characterize subterranean formations and fluids |
| 01/29/2015 | WO2015010462A1 Drilling and draining integrated floor anchoring driller |
| 01/29/2015 | US20150027783 Nanoparticle kinetic gas hydrate inhibitors |
| 01/29/2015 | US20150027781 Mud lift pump for dual drill string |
| 01/29/2015 | US20150027728 Live Well Staged Installation of Wet Connected ESP and Related Method |
| 01/29/2015 | US20150027707 Engineered methods and materials for wellbore strengthening in subterranean operations |
| 01/29/2015 | US20150027705 Method for Zone Isolation in a Subterranean Well |
| 01/28/2015 | EP2828470A2 Mathematical modeling of shale swelling in water based muds |
| 01/28/2015 | CN204126578U 远程自动控制液驱防喷节流管汇 Remote automatic control Hydrostatic BOP choke manifold |
| 01/28/2015 | CN204126577U 异口径节流管汇 Different caliber choke manifold |
| 01/28/2015 | CN204126576U 用于连续循环阀的t型内环套式三通球阀阀芯 T-type inner nested loop for continuous three-way ball valve spool |
| 01/28/2015 | CN204126575U 一种井下作业钻孔防护罩装置 A downhole drilling operations shield device |
| 01/28/2015 | CN104321500A 高温超级电容器 High temperature supercapacitors |
| 01/28/2015 | CN104314530A 流入控制装置 Flow control device |
| 01/28/2015 | CN104314493A 远程自动控制液驱防喷节流管汇 Remote automatic control Hydrostatic BOP choke manifold |
| 01/28/2015 | CN104314492A 一种旁通阀的使用方法 A method of using the bypass valve |
| 01/28/2015 | CN104314491A 一种用于钻杆旁通阀保护弹簧的方法 A method for the protection of the bypass valve spring drill |
| 01/28/2015 | CN104314490A 一种钻机固控循环系统 One kind of solid control rig circulatory system |
| 01/28/2015 | CN104314489A 一种便于运输的泥浆储罐 An easy to transport slurry tank |
| 01/28/2015 | CN103821469B 一种高粉粘粒含量地层地下连续墙泥浆控制方法 Powder formation of a high clay content control method of underground continuous wall of mud |
| 01/28/2015 | CN102787823B 井下旋流剪切发生器 Cut underground swirl generator |
| 01/28/2015 | CN102392612B 欠平衡钻井液气分离器 Underbalanced mud-gas separator |
| 01/28/2015 | CN102345450B 环空分流短节(fdj)及其相关计算方法 Annulus shunt short section (fdj) and its related calculation method |
| 01/27/2015 | US8939235 Rotating control device docking station |
| 01/27/2015 | US8939233 Methods and systems for drilling |
| 01/27/2015 | US8939217 Hydraulic pulse valve with improved pulse control |
| 01/27/2015 | CA2782343C Fluid flow control device |
| 01/27/2015 | CA2744967C Methods and systems for characterizing lcm particle plugging and rheology in real time |
| 01/26/2015 | CA2863603A1 Dome ceramique de rupture pour regulation de pression |
| 01/22/2015 | WO2015009289A1 Downhole tool and method to boost fluid pressure and annular velocity |
| 01/22/2015 | WO2015007672A1 Fluid loss sensor and method |
| 01/22/2015 | US20150021098 Breaker fluids for wellbore fluids and methods of use |
| 01/22/2015 | US20150021031 Electric and fired steam generation systems |
| 01/22/2015 | US20150021025 Method for Combined Cleaning and Plugging in a Well and Flushing Tool for Flushing in a Well |
| 01/21/2015 | EP2825721A2 Blowout preventer assembly |
| 01/21/2015 | CN204113242U 流入控制装置 Flow control device |
| 01/21/2015 | CN204113160U 油井作业防砂卡注射装置 Well Operations sand card injection device |
| 01/21/2015 | CN204113159U 一种泥浆罐 One kind of slurry tank |
| 01/21/2015 | CN204113158U 一种正钻反洗装置 A positive drilling backwash device |
| 01/21/2015 | CN204113157U 油井作业解堵装置 Well Operations plugging device |
| 01/21/2015 | CN204113156U 油田作业清砂装置 Oil sand operations unit |
| 01/21/2015 | CN204113155U 欠平衡注气洗井装置 Underbalanced flushing gas injection device |
| 01/21/2015 | CN204113154U 一种动密封冲管总成 One kind of dynamic seal red tube assembly |
| 01/21/2015 | CN204113153U 螺旋伸缩式循环三通 Retractable spiral cycle links |
| 01/21/2015 | CN204113152U 一种油井正反冲砂喷嘴 One kind of positive and negative wells washed sand nozzle |
| 01/21/2015 | CN204113120U 一种矿用风水分离牙轮钻头 An ore separation cone bit with feng shui |
| 01/21/2015 | CN204113112U 快速锚杆机 Fast bolting machine |
| 01/21/2015 | CN104295253A 一种三合一除砂除泥装置 One kind of triple Desanding Desilter device |
| 01/21/2015 | CN104295252A 一种钻井液清洁器 One kind of drilling fluid cleaner |
| 01/21/2015 | CN104295251A 一种钻机用除尘系统 One kind of drills, dust removal system |
| 01/21/2015 | CN104295250A 一种筛套环空冲砂管柱 One kind of screen casing annulus washed sand column |
| 01/21/2015 | CN104295249A 一种动水砂层管道钻孔施工护壁泥浆用量估算方法及其泥浆配方 One kind of hydrodynamic sands pipeline construction Wall drilling mud and slurry formulation dosage estimation methods |
| 01/21/2015 | CN104295248A 一种钻杆供水装置 One kind of drill pipe water supply system |
| 01/21/2015 | CN104295237A 气体钻井连续气举排液系统和方法 Continuous gas lift gas drilling drainage system and method |
| 01/21/2015 | CN102747970B 一种海洋钻井隔水管灌注阀自动控制系统 One kind of marine drilling riser perfusion valve automatic control system |
| 01/21/2015 | CN102704873B 自带泥浆池及泥浆分离装置钻/冲孔灌注桩的施工设备 Comes mud pools and mud separation device drill / Bored construction equipment |
| 01/20/2015 | US8936108 High power laser downhole cutting tools and systems |
| 01/20/2015 | US8936099 Cam mechanism for downhole rotary valve actuation and a method for drilling |
| 01/20/2015 | US8935957 Methods of designing a drilling fluid having suspendable loss circulation material |
| 01/20/2015 | CA2795910C Wellbore pressure control with segregated fluid columns |
| 01/17/2015 | CA2821155A1 Pump for controlling the flow of well bore returns |
| 01/15/2015 | WO2015006732A1 Diagnostic system for bulk well material handling plants |
| 01/15/2015 | WO2015006579A1 Acid precursor in divalent brines for cleaning up water-based filter cakes |
| 01/15/2015 | WO2015006159A1 Method and apparatus for in-situ fluid injector unit |
| 01/15/2015 | WO2015006109A1 Pump control for auxiliary fluid movement |
| 01/15/2015 | WO2015006093A1 System and method for operating a pump in a downhole tool |
| 01/15/2015 | WO2015003215A1 Dynamic seal tube for a down hole hammer drill |
| 01/15/2015 | US20150014062 Composition Comprising an Alkoxylated Amine Compound and a Carboxylic Acid Compound, use thereof in Water in Oil Emulsions and Process Using the Composition as or as Part of a Drilling Fluid |
| 01/15/2015 | US20150013971 Test packer and method for use |
| 01/15/2015 | US20150013721 Treatment of oil-contaminated solids |
| 01/14/2015 | EP2824274A2 Microtunneling system and apparatus |
| 01/14/2015 | EP2822677A2 A method and apparatus for mixing, transporting, storing, and transferring thixotropic fluids in one container |
| 01/14/2015 | CN204098856U 一种潜油电泵采油井多用途单流阀 One kind of multi-purpose production wells submersible pump check valve |
| 01/14/2015 | CN204098828U 一种杠杆式海底阀 A lever-type subsea valve |
| 01/14/2015 | CN204098827U 螺杆钻具用钻压控制阀 Screw drill with drill pressure control valve |
| 01/14/2015 | CN204098826U 钻井岩屑及废液不落地自动回收处理多功能罐装置 Drill cuttings and waste recycling is not automatic landing tank multifunction device |
| 01/14/2015 | CN204098825U 一种多功能矿用除尘车 A multifunctional mine dust car |
| 01/14/2015 | CN204098824U 一种带有冷却循环除尘的钻孔装置 Drilling device with a cooling cycle of dust |
| 01/14/2015 | CN204098823U 筛套环空冲砂管柱 Casing annulus washed sand sieve column |
| 01/14/2015 | CN204098822U 一种油水井冲砂工具 An oil wells washed sand Tools |
| 01/14/2015 | CN204098821U 一种泥浆导流管快速连接装置 One kind of mud diversion pipe quick connect device |