| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 11/30/2011 | CN202055754U 一种高压水射流岩土层扩孔装置 A high-pressure water jet rock layer reaming device |
| 11/30/2011 | CN202055749U 挤密钻具 Compaction drill |
| 11/30/2011 | CN1938542B 钢管用螺纹接头及其制造方法 Threaded joint for steel and its manufacturing method |
| 11/30/2011 | CN102265076A 石油工业中使用的密封管连接结构 Seal pipe connection structure used in the oil industry |
| 11/30/2011 | CN102261261A 构造煤发育区钻进、增透一体化装置 Tectonic coal development zone drilling, AR Integrated Device |
| 11/30/2011 | CN102261226A 井组件连接 Well connected components |
| 11/30/2011 | CN102261225A 一种多功能防突钻杆 A multifunctional outburst prevention drill |
| 11/30/2011 | CN101793157B 一种充填体支护的方法 One kind of filling body support method |
| 11/30/2011 | CN101509355B 双钻杆传动装置及双钻杆瓦斯防突钻 Double drill gearing and double diamond drill gas outburst prevention |
| 11/29/2011 | US8066307 Thread joint for a drill string for percussive rock-drilling |
| 11/29/2011 | US8066069 Method and apparatus for wellbore construction and completion |
| 11/29/2011 | US8066066 Borehole casing centraliser |
| 11/29/2011 | US8066033 Composite spoolable tube |
| 11/29/2011 | CA2577542C A drill-string connector |
| 11/28/2011 | CA2741150A1 An electrical connector, particularly for a drill string |
| 11/28/2011 | CA2740330A1 Well assembly coupling |
| 11/24/2011 | WO2011144864A1 Seabed-to-surface linking equipment including a flexible pipe guiding structure |
| 11/24/2011 | WO2011071691A3 Telescopic unit with dissolvable barrier |
| 11/24/2011 | US20110284291 Tension/Collar/Reamer Assemblies And Methods |
| 11/24/2011 | US20110284235 Safety System for Deep Water Drilling Units Using a Dual Blow Out Preventer System |
| 11/24/2011 | DE102010010036B4 Bohrvorrichtung mit Dichtungsanordnung und Verfahren zum Betrieb einer Bohrantriebseinheit Drilling assembly with sealing assembly and method for operating a Bohrantriebseinheit |
| 11/23/2011 | EP2288781B1 Pipe connector device |
| 11/23/2011 | EP2148974B1 Bottom-surface linking equipment including a flexible link between a floating support and the upper end of an under-surface rigid duct |
| 11/23/2011 | EP2049760B1 Articulated extraction pipe |
| 11/23/2011 | CN202047813U Inner-excited type stress wave generator |
| 11/23/2011 | CN202047760U Cathode protector of sucker rod |
| 11/23/2011 | CN202047759U Fast joint for swabbing weighted rod |
| 11/23/2011 | CN202047758U Six-lobed gas drainage drill rod |
| 11/23/2011 | CN202047757U Layered sand prevention layered testing and layered oil extraction integrated pipe column |
| 11/23/2011 | CN202047756U Low temperature resistance oil pipeline |
| 11/23/2011 | CN202047748U Ultra short radius horizontal well flexible drilling tool |
| 11/23/2011 | CN202047742U Rotary percussion type rock drilling machine and double-layer drill rod mechanism |
| 11/23/2011 | CN102257306A Tubular connection with self-locking threading used in the oil industry |
| 11/23/2011 | CN102251753A Continuous oil pipe and fracturing pipe column hanging and uncoupling device |
| 11/23/2011 | CN102251751A Novel full-automatic pneumatic chuck for mouse hole |
| 11/23/2011 | CN102251749A Phi 406-phi 130 large-caliper petroleum casing pipe variable-diameter joint and manufacturing method thereof |
| 11/23/2011 | CN102251748A Rope drill rod thread-connecting structure |
| 11/23/2011 | CN102251180A Rare-earth-containing ultrahigh strength collapse-resistant petroleum casing and production method thereof |
| 11/22/2011 | US8061451 Vertical drilling system for controlling deviation |
| 11/22/2011 | US8061450 Percussion drilling assembly having erosion retarding casing |
| 11/22/2011 | US8061423 Expandable wellbore assembly |
| 11/22/2011 | CA2638681C Oil country tubular good for expansion in well and manufacturing method thereof |
| 11/22/2011 | CA2589610C Apparatus and methods to protect connections |
| 11/22/2011 | CA2582386C A pipe joint lubrication device |
| 11/22/2011 | CA2537855C Downhole draw down pump and method |
| 11/22/2011 | CA2506923C A cable duct device in a swelling packer |
| 11/22/2011 | CA2429459C Adjustable stabiliser for directional drilling |
| 11/21/2011 | CA2740682A1 Insertable surface-driven pump |
| 11/17/2011 | WO2011143364A1 Telescoping orientation joint |
| 11/17/2011 | WO2011143043A2 Downhole electrical coupler for electrically operated wellbore pumps and the like |
| 11/17/2011 | WO2011088013A3 Downhole hydraulic coupling assembly |
| 11/17/2011 | US20110280668 Hang-Off Adapter for Offshore Riser Systems and Associated Methods |
| 11/17/2011 | US20110280667 Hybrid riser towers and fabrication thereof |
| 11/17/2011 | US20110278014 External Jet Pump for Dual Gradient Drilling |
| 11/17/2011 | US20110278013 Telescoping orientation joint |
| 11/17/2011 | US20110277995 Apparatus and method for monitoring corrosion and cracking of alloys during live well testing |
| 11/16/2011 | EP2386712A2 Wellhead control line deployment |
| 11/16/2011 | CN202042491U Follow-up solar panel support for polish rod of oil pumping unit |
| 11/16/2011 | CN202039843U Liquid and electricity mixed connecting structure among drill collars |
| 11/16/2011 | CN202039830U Ball injector for acid fracturing well head |
| 11/16/2011 | CN202039809U Underwater double-unlocking connector |
| 11/16/2011 | CN202039794U High efficiency cleaning drill rod for rock cuttings bed |
| 11/16/2011 | CN202039793U Buffer for oil field instrument |
| 11/16/2011 | CN202039792U Sucker rod columnar centralizer combined by using different materials |
| 11/16/2011 | CN202039791U Built-in fixed sucker rod centralizer |
| 11/16/2011 | CN202039790U Alloy spray-welding spiral centering device |
| 11/16/2011 | CN202039789U Oil casing pipe joint capable of being exchanged with American Petroleum Institute (API) joint |
| 11/16/2011 | CN202039788U Drilling rod connected through rectangular taper pin shaft |
| 11/16/2011 | CN202039787U Three-shoulder drill rod joint |
| 11/16/2011 | CN202039786U Connecting structure for high-pressure well completion oil pipe |
| 11/16/2011 | CN202039785U Durable drill pipe joint with ultrahigh torsional strength |
| 11/16/2011 | CN202039784U Thread connection mechanism for highly anti-torsion double shoulder drilling tool |
| 11/16/2011 | CN202039783U Drill rod with convex strips for double pulverized coal discharge channels |
| 11/16/2011 | CN202039782U Anti-bending casing pipe threaded connection structure |
| 11/16/2011 | CN202039771U Long-spiral grouting and guncreting multifunctional drilling tool |
| 11/16/2011 | CN202039770U Hole drill |
| 11/16/2011 | CN202039769U Crushing mechanism with air inlet pipe |
| 11/16/2011 | CN202039768U Crushing mechanism for rotatable drill pipe |
| 11/16/2011 | CN102245956A Pipe coupling arrangement |
| 11/16/2011 | CN102245955A Sealed tubular connection used in the oil industry, and method for producing said connection |
| 11/16/2011 | CN102245853A Flexible pipe |
| 11/16/2011 | CN102242610A Development of drill collar for detecting hydrocarbons while drilling |
| 11/16/2011 | CN102242609A Method for designing positions of sucker rod stabilizers with same bending stiffness in straight well |
| 11/16/2011 | CN102242608A Double-shoulder tri-conicity threading connector for high-temperature high-pressure petroleum casing pipe |
| 11/16/2011 | CN102242607A Soft seal of drill rod |
| 11/16/2011 | CN102242606A Hydraulic pressurizer |
| 11/16/2011 | CN102242605A Oil absorption continuous oil tube |
| 11/16/2011 | CN101501294B Polymer matrix reinforced stiffening element and method of producing the same |
| 11/15/2011 | US8056619 Aligning inductive couplers in a well |
| 11/15/2011 | CA2510448C Hybrid threaded connection for expandable tubulars |
| 11/15/2011 | CA2404577C Pipe centralizer and method of forming |
| 11/11/2011 | CA2749316A1 Adjustable eccentric bushing assembly for a wireline-operated directional core barrel drill |
| 11/10/2011 | WO2011140121A1 Safety system for deep water drilling units using a dual blow out preventer system |
| 11/10/2011 | WO2011138574A2 Control line protection |
| 11/10/2011 | WO2011103270A3 Apparatus, system and method for releasing fluids from a subsea riser |
| 11/10/2011 | WO2011101554A3 Expansible threaded joint and method for making same |
| 11/10/2011 | WO2009156723A3 Connector for spoolable media |
| 11/10/2011 | US20110272940 Connector for spoolable media |
| 11/10/2011 | US20110272196 Drilling stabilizer |
| 11/10/2011 | US20110272140 Field joint for a downhole tool |