| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 12/26/2007 | EP1611385B1 Tubing and piping for multiphase flow |
| 12/26/2007 | CN200996272Y High-strength sealed double pipe |
| 12/26/2007 | CN200995321Y Thrower assembler of suck-rod stabilizer |
| 12/25/2007 | US7311154 Line slack compensator |
| 12/25/2007 | US7311151 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 12/25/2007 | US7311148 Methods and apparatus for wellbore construction and completion |
| 12/25/2007 | US7311142 Apparatus and method for aquiring information while drilling |
| 12/25/2007 | US7311011 Apparatuses for interaction with a subterranean formation, and methods of use thereof |
| 12/21/2007 | WO2007145533A1 An interface between a stiff piece and a composite material, a method for the formation of such an interface and a stiff piece therefore |
| 12/21/2007 | WO2007145532A1 Polymer matrix reinforced stiffening element and method of producing the same |
| 12/21/2007 | WO2007144719A2 Expandable downhole tool |
| 12/21/2007 | WO2007144597A1 Top filling tubing |
| 12/21/2007 | WO2007144157A1 Methods and apparatus for wireline drilling on coiled tubing |
| 12/21/2007 | WO2007143773A1 Microtunnelling system and apparatus |
| 12/21/2007 | WO2007112292A3 Method for controlling fluid pressure in a borehole using a dynamic annular pressure control system |
| 12/21/2007 | WO2006116285A3 Apparatus and method for improving multilateral well formation and reentry |
| 12/21/2007 | WO2002103150A3 Tubing expansion |
| 12/21/2007 | CA2657463A1 Top filling tubing |
| 12/21/2007 | CA2655245A1 Methods and apparatus for wireline drilling on coiled tubing |
| 12/21/2007 | CA2651949A1 Expandable downhole tool |
| 12/21/2007 | CA2649801A1 Microtunnelling system and apparatus |
| 12/20/2007 | US20070292214 Bend stiffener |
| 12/20/2007 | US20070289149 Mode selection mechanism for power tool and power tool incorporating such mechanism |
| 12/19/2007 | EP1867831A1 Methods and apparatus for wireline drilling on coiled tubing |
| 12/19/2007 | EP1867830A1 Sleeve |
| 12/19/2007 | CN200992995Y Oil well pumping promoter |
| 12/19/2007 | CN200992960Y Sucker rod strong magnetic centralizer |
| 12/19/2007 | CN200992959Y Hollow-rod centralizer |
| 12/19/2007 | CN200992958Y Dual shoulder anti-torsion joint |
| 12/19/2007 | CN200992957Y Saw tooth thread connecting mechanism |
| 12/19/2007 | CN200992956Y Antigalling oil pipe or casing and its coupling |
| 12/19/2007 | CN200992955Y High strength pipe coupling integrated oil pipe or casing |
| 12/19/2007 | CN101089358A Method and apparatus to facilitate wet or dry control line connection for the downhole environment |
| 12/19/2007 | CN101089357A Rockbolt construction drill method and tube component for rockbolt construction drill |
| 12/19/2007 | CN100356035C Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 12/18/2007 | US7308955 Stabilizer arrangement |
| 12/18/2007 | US7308940 Flexible wellbore broach |
| 12/18/2007 | US7308935 Rotary pump stabilizer |
| 12/18/2007 | CA2424064C Mechanism that assists tractoring on uniform and non-uniform surfaces |
| 12/18/2007 | CA2410425C Tubular threaded joint capable of being subjected to diameteal expansion |
| 12/18/2007 | CA2388688C Threaded tubular joint proof to external pressure |
| 12/13/2007 | WO2007143324A1 Epoxy secured stop collar for centralizer |
| 12/13/2007 | WO2007141535A1 Consumable downhole tools |
| 12/13/2007 | US20070284148 System and method for damping vibration in a drill string |
| 12/13/2007 | US20070284113 System And Method For Rigging Up Well Workover Equipment |
| 12/13/2007 | US20070284112 Instrumented Tabular Device for Transporting a Pressurized Fluid |
| 12/12/2007 | EP1540131B8 "top drive swivel apparatus and method" |
| 12/12/2007 | CN200989173Y Sliding over diameter centralising device |
| 12/12/2007 | CN200989172Y Injection moulding type centralising device |
| 12/12/2007 | CN200989171Y Friction reducing and wear resisting sucker rod centralising casing |
| 12/12/2007 | CN200989170Y Oil well pipe column safety joint |
| 12/12/2007 | CN200989169Y Sucker rod for lowering beam-pumping unit pendant point loading |
| 12/12/2007 | CN101086203A Method for producing continuous casting round billet for petroleum bush using convertor process |
| 12/12/2007 | CN101086202A On-service petroleum drill pipe detection and classification evaluation method |
| 12/11/2007 | US7306060 Drilling assembly with a steering device for coiled-tubing operations |
| 12/11/2007 | US7306058 Anti-rotation device for a steerable rotary drilling device |
| 12/11/2007 | US7306056 Directional cased hole side track method applying rotary closed loop system and casing mill |
| 12/11/2007 | CA2461384C Drill pipe protector |
| 12/11/2007 | CA2434840C Well screen cover |
| 12/11/2007 | CA2283847C Friction reducing tool |
| 12/06/2007 | WO2007140311A1 Method of riser deployment on a subsea wellhead |
| 12/06/2007 | WO2007138121A1 Directable drill bit with integral rotation system |
| 12/06/2007 | WO2007137435A1 Well string centralizer and method of forming |
| 12/06/2007 | WO2005086691A3 Multiple distributed sensors along a drillstring |
| 12/06/2007 | US20070278788 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 12/06/2007 | US20070277988 Coupling device |
| 12/06/2007 | CA2655231A1 Method of riser deployment on a subsea wellhead |
| 12/06/2007 | CA2653343A1 Well string centralizer and method of forming |
| 12/05/2007 | EP1861578A1 Drill stem connection |
| 12/05/2007 | EP1259655B1 Elongated element and steel for percussive rock drilling |
| 12/05/2007 | CN200985751Y Diameter variable wing fastening device |
| 12/05/2007 | CN200985750Y Three pumping protectors of oil well |
| 12/05/2007 | CN200985749Y Sliding type centering guide for sucker rod |
| 12/05/2007 | CN200985748Y Rotetable type casing tube flexible joint |
| 12/05/2007 | CN200985747Y Pyramid inserted type drill pipe joint |
| 12/05/2007 | CN101082269A Petroleum annular tube reducer union and production process |
| 12/05/2007 | CN101082268A Central cable type high-strength large-through-hole rod |
| 12/05/2007 | CN101082267A Method and conduit for transmitting signals |
| 12/04/2007 | US7303022 Wired casing |
| 12/04/2007 | US7303016 Casing with isolated annular space |
| 12/04/2007 | CA2504578C Force transfer apparatus to assist release of loaded member |
| 12/04/2007 | CA2443343C Harsh environment rotatable connector |
| 12/04/2007 | CA2400824C Threaded tubular element for fatigue resistant threaded tubular joint and resulting threaded tubular joint |
| 12/04/2007 | CA2328849C Coupling for drill pipes |
| 11/29/2007 | WO2007136793A1 Rapid makeup riser connector |
| 11/29/2007 | WO2007134416A2 Protective ducting and method for the installation of same |
| 11/29/2007 | WO2003097987A3 A device for a long well tool |
| 11/29/2007 | US20070275585 Method for Interconnecting Electrical Conduits in a Borehole |
| 11/29/2007 | US20070272444 Dual rod drill pipe with improved flow path method and apparatus |
| 11/29/2007 | US20070272419 Threaded Connection for Expandable Tubulars |
| 11/29/2007 | US20070272414 Method of riser deployment on a subsea wellhead |
| 11/28/2007 | EP1860275A1 Coupling means |
| 11/28/2007 | CN200982181Y Circulation sliding sleeve for oil gas field |
| 11/28/2007 | CN200982165Y Limited centralizing ring dedicated for screw pump |
| 11/28/2007 | CN200982164Y Intelligently controlled diameter-variable stabilizer |
| 11/28/2007 | CN200982163Y Super high-pressure rubber-pipe adapter for drilling |
| 11/28/2007 | CN200982162Y Stratified test sand control pipe |
| 11/28/2007 | CN100351418C Steel product for oil country tubular good |
| 11/27/2007 | US7301609 Measuring sonde for a hydrocarbon well |
| 11/27/2007 | US7299886 Stabilized down hole drilling motor |