| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 09/24/2008 | CN201121493Y Oil tube inner lining short joint for continuous lever preventing bias-wearing |
| 09/24/2008 | CN201121492Y Built-in anti-releasing device for sucker rod |
| 09/24/2008 | CN201121491Y Bumper pin lever for fast connecting with cementing head |
| 09/24/2008 | CN201121490Y Anti-falling sucker-rod post of thick oil horizontal well |
| 09/24/2008 | CN201121489Y 25Mn2 small-diameter oil tube for secondary development of abandoned oil well |
| 09/24/2008 | CN101270445A Steel for fire resistant insulated tubing, insulated tubing and method for manufacturing same |
| 09/24/2008 | CN101270438A Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| 09/23/2008 | US7426963 Piggable flowline-riser system |
| 09/23/2008 | CA2480000C Bore-lining tubing |
| 09/23/2008 | CA2365966C Method of creating a wellbore in an underground formation |
| 09/23/2008 | CA2313919C Downhole communication method and apparatus |
| 09/23/2008 | CA2292867C Rotary pump stabilizer |
| 09/18/2008 | WO2008112331A1 A unitized multi-gauge multi-circuit gauge cluster, system array and gauge carrier for permanent down-hole production tube monitoring |
| 09/18/2008 | WO2008112272A1 System, method, and apparatus for passive and active updrill features on roller cone drill bits |
| 09/18/2008 | WO2008005192B1 System and method for hard line communication with mwd/lwd |
| 09/18/2008 | US20080223575 Casing and liner drilling bits and reamers, cutting elements therefor, and methods of use |
| 09/18/2008 | US20080223573 Passive Centralizer |
| 09/18/2008 | US20080223418 Device for Cleaning and Doping Equipment for Threads |
| 09/18/2008 | CA2680943A1 A seamless steel tube for use as a steel catenary riser in the touch down zone |
| 09/17/2008 | CN201116450Y Elastic screw anti-drag rigidity centralizer |
| 09/17/2008 | CN201116449Y Reversible buckle dual-purpose drill pipe joint |
| 09/17/2008 | CN201116448Y Rotary sealing joint for horizontal directional drilling machine |
| 09/17/2008 | CN101268246A Steerable drilling system |
| 09/17/2008 | CN101265797A Flow string possessing water controlling valve and longitudinal rib |
| 09/17/2008 | CN100419205C Constant force actuator |
| 09/17/2008 | CN100419111C Sulfur-preventing oil well pipe and its production process |
| 09/16/2008 | US7425024 Submersible pump drop pipe and casing assembly connection and method of manufacture |
| 09/16/2008 | US7424918 Interposed joint sealing layer method of forming a wellbore casing |
| 09/16/2008 | CA2501882C Telescoping centralizers for expandable tubulars |
| 09/16/2008 | CA2452969C Gel plugs and pigs for pipeline use |
| 09/16/2008 | CA2365333C Fluid controlled adjustable down-hole tool |
| 09/16/2008 | CA2338800C Enhancement of profiled tubular lining systems by channel augmentation |
| 09/14/2008 | CA2623931A1 Passive centralizer |
| 09/12/2008 | WO2008109148A1 In-situ molded non-rotating drill pipe protector assembly |
| 09/12/2008 | WO2008107855A2 Downhole load cell |
| 09/12/2008 | WO2008107694A1 Downhole tool |
| 09/12/2008 | WO2008107559A2 Flexible riser pipe installation for conveying hydrocarbons |
| 09/12/2008 | WO2008067154B1 Expandable wellbore liner |
| 09/12/2008 | CA2679547A1 Downhole tool |
| 09/12/2008 | CA2677345A1 In-situ molded non-rotating drill pipe protector assembly |
| 09/12/2008 | CA2676001A1 Flexible riser pipe installation for conveying hydrocarbons |
| 09/11/2008 | US20080217987 Drilling apparatus and system for drilling wells |
| 09/11/2008 | US20080217070 Method and apparatus for providing a continuous stroke auger boring machine |
| 09/11/2008 | US20080217023 Continuous sucker rod and method of using same |
| 09/11/2008 | US20080217001 Flow control device for choking inflowing fluids in a well |
| 09/10/2008 | EP1967690A2 High-strength sealed connection for expandable tubulars |
| 09/10/2008 | CN201114526Y Recording transmission instrument for portable wireless instrument display screen |
| 09/10/2008 | CN201111540Y Small diameter cold drawing oil tube |
| 09/10/2008 | CN101263276A Interface and method for wellbore telemetry system |
| 09/10/2008 | CN101260788A Superdeep well great displacement high performance boring tool protector for well |
| 09/10/2008 | CN101260787A Method of assembling sucker rods and end fittings |
| 09/10/2008 | CN101260786A Sucker rod end fittings and method of using same |
| 09/09/2008 | US7422069 Telescoping centralizers for expandable tubulars |
| 09/09/2008 | CA2460829C Improving collapse resistance of tubing |
| 09/09/2008 | CA2459839C Methods and apparatus for connecting tubulars while drilling |
| 09/04/2008 | WO2008104917A1 Method and apparatus for pipe-conveyed well logging |
| 09/04/2008 | WO2008104178A1 Drilling tool with feed control |
| 09/04/2008 | WO2008104083A1 Shoulder ring with axial retention means, and tools for installing same |
| 09/04/2008 | WO2008060893A3 Large bore packer and methods of setting same |
| 09/04/2008 | US20080214072 Apparatus And Method For Connection And Disconnection Of A Marine Riser |
| 09/04/2008 | US20080213048 Method for fabricating and transporting an integrated buoyancy system |
| 09/04/2008 | US20080210433 Subsea Well Communications Apparatus and Method Using Variable Tension Large Offset Risers |
| 09/04/2008 | US20080210425 Connector for perforating gun tandem |
| 09/04/2008 | US20080210419 Centralizer |
| 09/04/2008 | CA2816942A1 Shoulder ring installation tools |
| 09/04/2008 | CA2685062A1 Drilling tool with feed control |
| 09/04/2008 | CA2678054A1 Method and apparatus for pipe-conveyed well logging |
| 09/04/2008 | CA2677248A1 Shoulder ring with axial retention means, and methods for installing same |
| 09/03/2008 | EP1965021A2 A method for collecting geological data |
| 09/03/2008 | EP1965020A1 Protective sleeve for expandable threaded connections |
| 09/03/2008 | EP1963726A1 External protection for expandable tubular threaded joints |
| 09/03/2008 | CN201110140Y Synthetic protector for sucker rod |
| 09/03/2008 | CN201110139Y Combined centralizer |
| 09/03/2008 | CN201110138Y Lock card cage type four inches casing centralizer |
| 09/03/2008 | CN201110137Y Metallic rubber bidirectional welldrilling damper |
| 09/03/2008 | CN201110136Y Connecting apparatus capable of contrarotation |
| 09/03/2008 | CN201110135Y Ball dental type versatile spindle for screw drill |
| 09/03/2008 | CN201110134Y High-efficiency heat-preserving double hollow sucker rod |
| 09/03/2008 | CN201110133Y Double hollow sucker rod |
| 09/03/2008 | CN201110127Y Drilling tool combination being suitable for quick welldrilling |
| 09/02/2008 | US7420121 Structure for a cable connection head |
| 09/02/2008 | US7419009 Apparatus for radially expanding and plastically deforming a tubular member |
| 09/02/2008 | US7419003 Erosion resistant aperture for a downhole valve or ported flow control tool |
| 09/02/2008 | US7419002 Flow control device for choking inflowing fluids in a well |
| 09/02/2008 | CA2482487C Permanent downhole deployment of optical sensors |
| 09/02/2008 | CA2449812C Completion apparatus and methods for use in wellbores |
| 09/02/2008 | CA2402342C Centraliser |
| 08/28/2008 | WO2008103069A1 Sealed threaded joint for oilfield pipes |
| 08/28/2008 | WO2008064233A9 Perforating gun assembly with auger to control wellbore fluid dynamics |
| 08/28/2008 | WO2006100014A8 Probe end piece |
| 08/28/2008 | US20080202816 Torque Converter for Use When Drilling with a Rotating Drill Bit |
| 08/28/2008 | US20080202753 Method and apparatus for expanding and separating tubulars in a wellbore |
| 08/28/2008 | US20080202749 Aqueous colloids comprising polydiallyldimethylammonium chloride, sodium lauryl sulfate, and laury alcohol for well completion fluids; for subterranean fracturing/drilling; coacervate gels having excellent shear viscosities |
| 08/28/2008 | DE102007018979B3 Spacer for fixing geothermal energy probes, has circular sections partially enclosing external pipes at external side in form-fitted manner, where each section has rib-shaped spacer part to centrally support pipe bundle |
| 08/28/2008 | CA2678604A1 A tight threaded joint of oil field pipes |
| 08/28/2008 | CA2622735A1 Soft stop for maximum riser tensioner stroke |
| 08/27/2008 | EP1960631A2 Flexible sinker bar with electrically conductive wires |
| 08/27/2008 | CN201106443Y Controllable sandblaster being convenient to disjoint |
| 08/27/2008 | CN201106416Y Auger stem |
| 08/27/2008 | CN201106415Y Canula abrasion protection pipe nipple |