| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 08/27/2008 | CN201106414Y Protective equipment of polished rod for blocking injury |
| 08/27/2008 | CN201106413Y Liner breakdown elastic locating centralizer |
| 08/27/2008 | CN201106412Y Well mouth casing head |
| 08/27/2008 | CN201106411Y Connector for sucker rod |
| 08/27/2008 | CN201106410Y Ir-kill-job perforating blow-in rotating-laying integrated tubular pile |
| 08/27/2008 | CN201106409Y Two-stage propulsion combined oil cylinder of drilling machine |
| 08/27/2008 | CN201106408Y Abnormity drill rod |
| 08/27/2008 | CN201106407Y Continuous hollow sucker rod |
| 08/27/2008 | CN201106402Y Pump enter pipe nipple special for casing tube welldrilling mouth |
| 08/27/2008 | CN101253304A Bi-directional drill string telemetry for measurement and drilling control |
| 08/27/2008 | CN101250985A Tank bottom orientation stabilizer |
| 08/27/2008 | CN101250984A Well-washing sand prevention integrated technique tubular pile |
| 08/27/2008 | CN101250977A Drilling unit head of deep sea drill core sampling drilling machine |
| 08/26/2008 | US7416034 Drive system |
| 08/26/2008 | CA2490506C Expandable tubular connection |
| 08/26/2008 | CA2470435C A pressure control system for a wet connect/disconnect hydraulic control line connector |
| 08/26/2008 | CA2259569C Downhole tool and method |
| 08/21/2008 | WO2008099161A1 Systems for actuating a downhole tool |
| 08/21/2008 | WO2008083016A3 Sensing tool |
| 08/21/2008 | US20080196903 Shoe for Wellbore Iining Tubing |
| 08/21/2008 | US20080196900 Polymeric materials |
| 08/21/2008 | US20080196899 Marine Riser Tower |
| 08/20/2008 | EP1959179A2 Threaded joint for steel pipes and process for the surface treatment thereof |
| 08/20/2008 | EP1959091A1 Diameter expanding groove cutting device and expanding/contracting mechanism tool |
| 08/20/2008 | EP1957747A2 Safety interlock for control lines |
| 08/20/2008 | CN201103350Y Screwed tie-in of oil casing tube for deep mine |
| 08/20/2008 | CN201103349Y Screwed tie-in of oil casing tube |
| 08/20/2008 | CN201103348Y Abrasion-resistant alloy protective pipe connector of oil-pumping rod |
| 08/20/2008 | CN201103347Y Circular arc shaped rib gas-drawing drilling rod |
| 08/19/2008 | US7413036 Sub drilling sub |
| 08/19/2008 | US7413023 Wellhead seal unit |
| 08/19/2008 | US7413021 Method and conduit for transmitting signals |
| 08/19/2008 | US7412761 Method of creating a sleeve on tubing |
| 08/16/2008 | CA2621338A1 Corrosion protection of continuous sucker rod weld zones |
| 08/15/2008 | CA2621046A1 Weighted spoolable pipe |
| 08/14/2008 | WO2008097224A1 Protective sleeve for tubular connection |
| 08/14/2008 | WO2007092375B1 Housing and gearbox for drill or driver |
| 08/14/2008 | US20080193219 Method and System for Starting up a Pipeline |
| 08/14/2008 | US20080191479 Screw Joint for Oil Well Tubing |
| 08/14/2008 | US20080190669 Bearing assembly for downhole mud motor |
| 08/14/2008 | US20080190624 Method for Drilling Oil and Gas Wells |
| 08/14/2008 | US20080190602 Centralizer tool, a centralizing method and a method of making a centralizer tool |
| 08/13/2008 | EP1955674A2 A method of conveying hydrocarbon fluids with a swirl flow |
| 08/13/2008 | EP1954911A1 Clamping device for buoyancy bodies |
| 08/13/2008 | EP1466069B1 Downhole assembly releasable connection |
| 08/13/2008 | CN201100100Y Key with lamp capable of replacing key billet |
| 08/13/2008 | CN201100099Y Digital screw thread modified type double shoulder highly anti-twisting drill pipe joint |
| 08/13/2008 | CN201100098Y Curved face butting double shoulder highly anti-twisting drill pipe joint |
| 08/13/2008 | CN201100097Y Friction welding sucker rod |
| 08/13/2008 | CN101240694A Modular connector and method |
| 08/13/2008 | CN101240137A Special-purpose protection dope for petroleum pipe/drill pipe and its preparation method and construction method |
| 08/12/2008 | US7412368 Methods and computer-readable media for determining design parameters to prevent tubing buckling in deviated wellbores |
| 08/12/2008 | US7410001 Coupling and sealing tubulars in a bore |
| 08/12/2008 | US7409987 Disconnection device for a wireline |
| 08/12/2008 | US7409758 Vibration damper systems for drilling with casing |
| 08/12/2008 | CA2502591C Apparatus and methods for installing instrumentation line in a wellbore |
| 08/12/2008 | CA2495170C Wellbore communication system |
| 08/12/2008 | CA2482681C Energized slip ring assembly |
| 08/12/2008 | CA2464999C Wired casing |
| 08/12/2008 | CA2449857C Wear sleeve |
| 08/12/2008 | CA2440619C Expandable coupling |
| 08/07/2008 | WO2008094106A1 Rock drilling equipment and a method in association with same |
| 08/07/2008 | WO2008092994A1 Drilling tool |
| 08/07/2008 | US20080185187 Snap ringed bit retainer ring |
| 08/07/2008 | US20080185186 Drilling assembly |
| 08/07/2008 | US20080185148 Whipstock assembly for forming a window within a wellbore casing |
| 08/07/2008 | DE102006022613B4 Bohrantriebseinheit und Bohrgerät Bohrantriebseinheit and drill |
| 08/07/2008 | CA2675842A1 Drilling tool |
| 08/06/2008 | EP1952075A1 Probe end piece |
| 08/06/2008 | EP1951986A2 Apparatus and method for managed pressure drilling |
| 08/06/2008 | EP1678408A4 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system |
| 08/06/2008 | EP1386387B1 Downhole torque generator |
| 08/06/2008 | CN201095981Y Permanent magnetism short joint for well drilling |
| 08/06/2008 | CN201095977Y Gas lift pipe column for hot washing protective oil layer and no-killing operation |
| 08/06/2008 | CN201095961Y High performance abrasion-proof centralizer |
| 08/06/2008 | CN201095960Y Anti-corrosive petroleum case pipe joint |
| 08/06/2008 | CN201095959Y Economical type pumping rod abrasion-proof coupling |
| 08/06/2008 | CN201095958Y Pumping rod abrasion-proof coupling |
| 08/06/2008 | CN101235711A Hollow sucker rod electric heater unit |
| 08/06/2008 | CN101235708A Sucker rod centralizer sliding bush |
| 08/06/2008 | CN101235707A Well drilling drill string operating status stabilizer |
| 08/06/2008 | CN101235706A Anti-corrosive abrasion-proof oil conduit mounting method |
| 08/06/2008 | CN100408220C Protective sleeve for threaded connections for expandable liner hanger |
| 08/05/2008 | US7407525 Cutting element rock bit used to drill wellbores composed of wear resistant coarse transition metal carbide, boride or nitride grains in a binder matrix (cobalt); fracture toughness of at least 20 ksi (in)0.5 and a wear number of at least 1.8. |
| 08/05/2008 | US7407021 Methods for the installation of earth anchors |
| 08/05/2008 | US7407020 Rotating systems associated with drill pipe |
| 08/05/2008 | US7407005 Electrically controlled release device |
| 08/05/2008 | CA2460370C Composite low cycle fatigue coiled tubing connector |
| 08/05/2008 | CA2368828C System for reducing vortex induced vibration of a marine element |
| 08/05/2008 | CA2348748C Hydro-lifter rock bit with pdc inserts |
| 08/02/2008 | CA2619808A1 Multi-cell spoolable pipe |
| 07/31/2008 | WO2008008346A3 Method and apparatus for building a tilted antenna |
| 07/31/2008 | US20080179884 Coupling for drilling-with-casing operations |
| 07/31/2008 | US20080179101 Auger |
| 07/31/2008 | US20080179100 Downhole drilling tool |
| 07/31/2008 | US20080179058 Top drive swivel apparatus and method |
| 07/30/2008 | EP1948901A1 Method and device at rock drilling |
| 07/30/2008 | EP1948900A2 Thread securer |
| 07/30/2008 | EP1794413A4 Apparatus and method for wireline imaging in nonconductive muds |
| 07/30/2008 | EP1680573B1 Expandable wellbore assembly |