| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 03/07/2012 | CN202157745U 一种具有减振功能的螺杆钻具传动轴总成 Screw having a damping function drill shaft assembly |
| 03/07/2012 | CN202157322U 超大扭矩螺旋钻孔灌注桩机 Bored large torque screw machine |
| 03/07/2012 | CN102369336A Nhole drilling assembly |
| 03/07/2012 | CN102367556A Drilling steel and preparation method thereof |
| 03/07/2012 | CN101397894B Well drilling gas injection joint and use method thereof |
| 03/06/2012 | US8127854 System and method for rigging up well workover equipment |
| 03/06/2012 | CA2552557C Load ring for lifting by elevator, of casing having no upset |
| 03/01/2012 | WO2012027637A1 Magnetic latching device for downhole wellbore intercept operations |
| 03/01/2012 | WO2012025461A2 Tubular threaded connection |
| 03/01/2012 | WO2011127096A9 Riser components and methods for making the same |
| 03/01/2012 | US20120048623 Holding device insertable into the central bore of a tubular drill string component, and corresponding tubular drill string component |
| 03/01/2012 | CA2809264A1 Magnetic latching device for downhole wellbore intercept operations |
| 03/01/2012 | CA2807087A1 Tubular threaded connection |
| 02/29/2012 | EP2422040A2 Well tubular, coating system and method for oilfield applications |
| 02/29/2012 | CN202152648U 防喷器试压钻杆扶正器 BOP pressure test drill centralizer |
| 02/29/2012 | CN202152647U 油管悬挂器中的抽油杆保护器 The tubing hanger rod protector |
| 02/29/2012 | CN202152646U 一种双台阶钻杆内螺纹接头 Within a two-step drill pipe threaded joints |
| 02/29/2012 | CN202152645U 连续油管之间对焊接头 Between the coiled tubing welded head |
| 02/29/2012 | CN202152644U Special sucker rod connecting device for screw pump |
| 02/29/2012 | CN202152643U 多层系开采油井的分层求产测压管柱 Multi-tiered system of exploitation of oil production manometry seeking column |
| 02/29/2012 | CN202152636U 适用于气体反循环钻井的鹅颈管 Suitable for reverse circulation drilling gas gooseneck |
| 02/29/2012 | CN202152632U 一种钻探机构 A method of drilling agency |
| 02/29/2012 | CN202152631U 一种具有压力补偿功能的油密封螺杆钻具传动轴总成 Oil seal screw having a pressure compensation drill shaft assembly |
| 02/29/2012 | CN102365417A Threaded thin-walled drill tube joint |
| 02/29/2012 | CN102364044A Double-channel injection and production switching device |
| 02/29/2012 | CN102364034A Petroleum drill rod joint outer wall same-base wear-resistant strip and thermal treatment process |
| 02/29/2012 | CN101644141B Gas distributary joint suitable for gas drilling coring tool |
| 02/29/2012 | CN101280667B Low helical abrasion-proof drill rod for mash gas pumping drilling construction and machining process thereof |
| 02/28/2012 | US8122967 Apparatus and method for controlling the connection and disconnection speed of downhole connectors |
| 02/28/2012 | US8122960 Spoolable coiled tubing spear for use in wellbores and methods of using same |
| 02/23/2012 | WO2012024386A1 Riser sections and methods for making the same |
| 02/23/2012 | WO2012022679A1 Pipe connection |
| 02/23/2012 | WO2011153008A3 Traveling and locking centralizer |
| 02/23/2012 | WO2011150363A4 Deepwater completion installation and intervention system |
| 02/23/2012 | US20120043134 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 02/23/2012 | US20120043132 Reamer Assembly |
| 02/23/2012 | US20120043090 Improved subsea riser system |
| 02/23/2012 | DE102010050477B3 Metal pipe for pillar for offshore wind turbine, has tubular pipe wall elements which are stuck together in parallel by using tubular fiber-reinforced plastic elements |
| 02/23/2012 | CA2797198A1 High load universal joint for downhole rotary steerable drilling tool |
| 02/22/2012 | EP2420646A1 Pipe connection |
| 02/22/2012 | EP2419605A1 A communication arrangement for transmission of communication signals along a pipe line |
| 02/22/2012 | EP2419598A1 Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection |
| 02/22/2012 | CN202148875U 整体式抽油杆扶正器 Monolithic rod centralizer |
| 02/22/2012 | CN202148874U 偏心式滚轮套管刚性扶正器 Eccentric wheel rigid casing centralizer |
| 02/22/2012 | CN202148873U 电动式扶正器 Electric centralizer |
| 02/22/2012 | CN202148872U 气密封螺纹接头的螺纹结构 A threaded screw structure airtight joints |
| 02/22/2012 | CN202148871U 抽油杆液压防脱减震器 Anti-off rod hydraulic shock absorbers |
| 02/22/2012 | CN102362045A Helical drilling apparatus, systems, and methods |
| 02/22/2012 | CN102361892A Fluororesin and riser pipe |
| 02/22/2012 | CN102359350A Centering device |
| 02/22/2012 | CN102359349A Metallic seal test tubing head |
| 02/22/2012 | CN102359347A Machine-locked drilling machine, drilling rod monitoring method, controller and monitoring system thereof |
| 02/22/2012 | CN102359346A Lunar soil deep drilling sample recycling mechanism |
| 02/21/2012 | USRE43199 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells |
| 02/21/2012 | US8118093 Threaded retention device for downhole transmission lines |
| 02/21/2012 | CA2683711C Systems and methods for reducing backward whirling while drilling |
| 02/21/2012 | CA2666070C Composite coiled tubing end connector and pipe-to-pipe connector |
| 02/21/2012 | CA2662372C Optical wet connect |
| 02/21/2012 | CA2617418C Interface and method for wellbore telemetry system |
| 02/21/2012 | CA2615911C Partial coil-in-coil tubing |
| 02/21/2012 | CA2511943C Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine |
| 02/21/2012 | CA2403174C Multi-purpose float equipment and method |
| 02/16/2012 | WO2012021302A2 Drilling system for enhanced coring and method |
| 02/16/2012 | WO2012021066A1 A method and device for stabilizing a conductor in a submerged conductor guide |
| 02/16/2012 | US20120037377 Aluminum auxiliary lines for drilling riser |
| 02/16/2012 | US20120037358 Stroker Device |
| 02/16/2012 | CA2816525A1 Drilling system for enhanced coring and method |
| 02/15/2012 | EP2417326A2 Tubing shoe |
| 02/15/2012 | EP2417325A2 Interference-fit stop collar and method of positioning a device on a tubular |
| 02/15/2012 | EP2417324A2 Friction reducing wear band and method of coupling a wear band to a tubular |
| 02/15/2012 | EP2326793B1 High pressure sleeve for dual bore hp riser |
| 02/15/2012 | EP2191102B1 Down-hole wireless communication system |
| 02/15/2012 | EP2132399B1 System, method, and apparatus for passive and active updrill features on roller cone drill bits |
| 02/15/2012 | CN202144729U 一种防腐油管、油管连接箍及油管组 One kind of anti-corrosion pipe, tubing and tubing connections hoop group |
| 02/15/2012 | CN202144728U 地质勘探用的异型钻杆 Shaped by the geological exploration drill |
| 02/15/2012 | CN202144727U 一种旋挖机用自动脱销新型内芯钻杆 One kind of rotary drilling machine with automatic stock new core drill |
| 02/15/2012 | CN102352728A Drilling tool adapter |
| 02/15/2012 | CN102352727A 8TPI oil or casing pipe threaded connector |
| 02/15/2012 | CN101634218B 具有钻孔控制注浆装置的组合式钻具 Grouting drilling control apparatus having a combined drill |
| 02/14/2012 | US8113302 Drilling tool |
| 02/14/2012 | US8113290 Dissolvable connector guard |
| 02/14/2012 | US8113277 Sucker rod end fittings and method of using same |
| 02/09/2012 | WO2012017065A2 Clamp |
| 02/09/2012 | WO2011025431A8 Drill string component for noise control during percussion drilling |
| 02/09/2012 | WO2010092313A8 Offset stochastic control |
| 02/09/2012 | US20120031622 Trigger Joint |
| 02/09/2012 | US20120031620 Marine composite riser for structrual health monitoring using piezoelectricity |
| 02/09/2012 | US20120031617 Formation treatment system and method |
| 02/09/2012 | US20120031609 Low Friction Wireline Standoff |
| 02/08/2012 | EP2415959A2 Marine composite riser for structural health monitoring using piezoelectricity |
| 02/08/2012 | EP2414718A1 Threaded joint for pipes |
| 02/08/2012 | EP2414616A2 A rig for wellbore operations |
| 02/08/2012 | CN202140041U 抽油杆扶正器 Sucker rod centralizer |
| 02/08/2012 | CN202140040U 套管热力扶正器 Thermal casing centralizer |
| 02/08/2012 | CN202140039U 自旋式多功能悬绳器 Spin multifunctional hanging rope |
| 02/08/2012 | CN202140038U 防偏磨油管旋转器 Anti-wear tubing partial rotator |
| 02/08/2012 | CN202140037U 双线偏梯锥型螺纹套管的连接结构 Partial double staircase connecting structure of conical nipples |
| 02/08/2012 | CN202140036U 气密封结构的油/套管螺纹连接接头 Oil and gas seal structure / sleeve threaded connectors |
| 02/08/2012 | CN202140035U 直连式固井套管柱 Direct-attached cementing casing strings |
| 02/08/2012 | CN202140034U 一种能传递扭矩的管柱伸缩补偿器 One kind of string stretching can transfer torque compensator |