| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/17/2009 | US7490676 Method and system for tubing a borehole in single diameter |
| 02/12/2009 | WO2009021037A2 Rotating and reciprocating swivel apparatus and method |
| 02/12/2009 | WO2009020784A1 Communication connections for wired drill pipe joints |
| 02/12/2009 | WO2009019999A1 Excavation device |
| 02/12/2009 | WO2009018706A1 Drill pipe thread protector |
| 02/12/2009 | US20090038849 Communication Connections for Wired Drill Pipe Joints |
| 02/12/2009 | US20090038138 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 02/11/2009 | EP2021576A2 Marine riser and method for making |
| 02/11/2009 | EP0786616B2 Steel pipe joint having high galling resistance and surface treatment method thereof |
| 02/11/2009 | CN201193511Y Torque-changing energy saving oil pumping machine with flexible sucker rod |
| 02/11/2009 | CN201193491Y Integration no killing well releasing tool |
| 02/11/2009 | CN201193487Y Wear resistant type pump rod joint |
| 02/11/2009 | CN201193486Y Torsion resistant ultrahigh strength anti-corrosive sucker rod |
| 02/11/2009 | CN201193485Y Stainless steel anti-corrosive tube for oil-gas field |
| 02/11/2009 | CN101363309A 被动扶正器 Passive centralizer |
| 02/10/2009 | US7487840 Wear resistant layer for downhole well equipment |
| 02/10/2009 | US7487832 Force transfer apparatus to assist release of loaded member |
| 02/10/2009 | US7487830 Method and apparatus to facilitate wet or dry control line connection for the downhole environment |
| 02/10/2009 | CA2432074C Downhole tool with electrical conductor |
| 02/10/2009 | CA2384281C Method and device for rotary well drilling |
| 02/09/2009 | CA2635101A1 A subsurface formation monitoring system and method |
| 02/05/2009 | WO2009017974A1 Field joint for a downhole tool |
| 02/05/2009 | WO2009016453A2 Drill pipe with tool joints |
| 02/05/2009 | WO2009016346A2 Deployment system |
| 02/05/2009 | WO2008134765A3 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig |
| 02/05/2009 | WO2008128543A3 Stroker tool |
| 02/05/2009 | US20090032309 Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools |
| 02/05/2009 | US20090032265 Independently Wellhead Drilling Adapter |
| 02/05/2009 | US20090032264 Subsea pumping system |
| 02/05/2009 | US20090032246 Oil country tubular good for expansion in well and duplex stainless steel used for oil country tubular good for expansion |
| 02/05/2009 | US20090032134 Fluid dispenser assembly |
| 02/05/2009 | CA2697305A1 Field joint for a downhole tool |
| 02/05/2009 | CA2694581A1 Deployment system |
| 02/04/2009 | EP2019904A1 A rock-drilling tool, a drill rod and coupling sleeve |
| 02/04/2009 | EP2019903A1 A top hammer rock-drilling tool, a drill rod and coupling sleeve |
| 02/04/2009 | EP2019902A1 A female part for top hammer-drilling and method for manufacturing a female part |
| 02/04/2009 | EP2019901A2 Reaming tool suitable for running on casing or liner and method of reaming |
| 02/04/2009 | CN201190559Y Ultralong sucker rod heat pipe assembly with high heat transfer characteristic |
| 02/04/2009 | CN201190542Y Anti-corrosive pump rod joint of tungsten alloy |
| 02/04/2009 | CN201190541Y Connector of continuous sucker rod of impact resistance composite material |
| 02/04/2009 | CN201190540Y Air-water dual-purpose inserting outburst-prevention drill rod |
| 02/04/2009 | CN201190539Y Abnormity drill rod using electric hand drill head for electric coal drill |
| 02/04/2009 | CN101360945A External protection for expandable tubular threaded joints |
| 02/04/2009 | CN101358516A Simplified operation string of pumping well |
| 02/04/2009 | CN101358507A Method for preventing resonance generation between drill string and self elevating drilling platform |
| 02/04/2009 | CN101357724A Flight winding machine |
| 02/04/2009 | CN101357381A Flight winding machine |
| 02/04/2009 | CN101357380A Flight winding machine and steel belt introduction device used by flight winding machine |
| 02/04/2009 | CN100458255C implement of plastic expansion of sealed tubular joint with inclined abutting surface |
| 02/03/2009 | CA2525425C Drilling string torsional energy control assembly and method |
| 02/03/2009 | CA2506426C Apparatus and method for drilling and reaming a borehole |
| 02/03/2009 | CA2497314C Method and apparatus for removing cuttings |
| 01/29/2009 | WO2009014865A1 Apparatus for and method of deploying a centralizer installed on an expandable casing string |
| 01/29/2009 | WO2009014444A1 Drill device having a rotary-vibratory drive |
| 01/29/2009 | WO2009013434A2 Device for extracting a material from the bed of a body of water and associated method |
| 01/29/2009 | WO2008122577A3 Intervention system dynamic seal and compliant guide |
| 01/29/2009 | US20090025983 Methods and Apparatus to Apply Axial Force to a Packer in a Downhole Tool |
| 01/29/2009 | US20090025939 Non-orienting tree cap |
| 01/29/2009 | US20090025929 Apparatus for and Method of Deploying a Centralizer Installed on an Expandable Casing String |
| 01/29/2009 | US20090025926 Field Joint for a Downhole Tool |
| 01/29/2009 | CA2690977A1 Apparatus for and method of deploying a centralizer installed on an expandable casing string |
| 01/28/2009 | CN201187266Y Lifting and loosening apparatus of drill and matching drill rod thereof |
| 01/28/2009 | CN201187264Y Centralizer |
| 01/28/2009 | CN201187263Y Horizontal well stationary type pipe column centralizer |
| 01/28/2009 | CN201187262Y Horizontal well variable radial pipe column centralizer |
| 01/28/2009 | CN201187261Y Slot bottom positioning stabilizer |
| 01/28/2009 | CN201187260Y Casing tube screwed joint |
| 01/28/2009 | CN201187259Y High-efficiency blowout prevention anti-wear unloading and uncoupling machine |
| 01/28/2009 | CN201187258Y Spring clip combined positioning apparatus |
| 01/28/2009 | CN201187257Y Reed type fall-proof inserted pin |
| 01/28/2009 | CN201187256Y Outer wall of gas well oil conduit with duplex metal spraying corrosion prevention |
| 01/28/2009 | CN201187251Y Drill rod mechanism of open-air down-hole drill |
| 01/28/2009 | CN101353957A Same well production-injection method and pipe column |
| 01/28/2009 | CN101353950A On-site connection joint for downhole tool and downhole tool |
| 01/28/2009 | CN101353949A Heat-treatment method of small diameter high steel level oil conduit |
| 01/28/2009 | CN101353948A 25Mn2 small diameter oil conduit for waste oil well secondary development and its processing method |
| 01/28/2009 | CN101353765A Steel for CT80 grade coiled tubing, and manufacturing method and use thereof |
| 01/28/2009 | CN101353081A Water intake riser |
| 01/27/2009 | US7481461 Device which is expandable to engage the interior of a tube |
| 01/27/2009 | US7481272 Completion apparatus and methods for use in wellbores |
| 01/27/2009 | US7481270 Subsea pumping system |
| 01/27/2009 | CA2548458C Hydraulically releaseable inflation tool for permanent bridge plug |
| 01/27/2009 | CA2484927C Method and apparatus for mwd formation testing |
| 01/27/2009 | CA2469023C Thrust control apparatus |
| 01/22/2009 | WO2008122416A3 Rod coupling comprising a sacrificial element |
| 01/22/2009 | WO2007122430A9 Autonomous shut-off valve system |
| 01/22/2009 | US20090023502 Downhole shock absorber for torsional and axial loads |
| 01/22/2009 | US20090020338 Downhole Assembly and Cutter Assembly |
| 01/22/2009 | US20090020337 Downhole drilling tool |
| 01/22/2009 | US20090020061 Connector for Releasable Connection Between an Achorage in the Form of a Female Part Arranged on a Floating Means and a Male Part Formed at the End of a Retrievable Umbilical |
| 01/21/2009 | EP2016254A1 Downhole swivel apparatus and method |
| 01/21/2009 | CN201184191Y Orientation direct head capable of measuring direction of self-floating and dragging instrument |
| 01/21/2009 | CN201184144Y Inverse well drill guide pore and open pore centralizers |
| 01/21/2009 | CN201184143Y Anti-flee self-locking sucker rod centralizer |
| 01/21/2009 | CN201184142Y Gas drilling drag reduction vibration damping break-proof tools |
| 01/21/2009 | CN201184141Y Oil conduit inner centralizer |
| 01/21/2009 | CN201184140Y Pre-tightening type sucker rod centralizer |
| 01/21/2009 | CN201184139Y Multifunctional stabilizer |
| 01/21/2009 | CN201184138Y Novel blowout prevention connecting-tripping device |
| 01/21/2009 | CN201184137Y Novel blowout prevention connecting-tripping device |