| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 08/10/2011 | CN102146783A Mouse cage type V-shaped straight wire sieve tube |
| 08/10/2011 | CN102146777A Methods and systems for orienting in a wellbore |
| 08/10/2011 | CN102146773A Drilling machine shock absorber and using method thereof |
| 08/10/2011 | CN102146772A Rotary locking piece type drilling riser connector |
| 08/09/2011 | US7992638 Downhole disconnect mechanism |
| 08/09/2011 | CA2586183C Conveyor tube for use in installing or replacing a well tool in a producing well and procedures for use of the same |
| 08/09/2011 | CA2451587C Conductor system |
| 08/04/2011 | WO2011094429A2 Shock reduction tool for a downhole electronics package |
| 08/04/2011 | WO2011092630A1 Tapered spline connection for drill pipe, casing and tubing |
| 08/04/2011 | WO2011049941A3 Downhole release joint with radially expandable members |
| 08/04/2011 | WO2011022255A4 Attachment of control lines to outside of tubular |
| 08/04/2011 | US20110186289 Expandable Centralizer For Expandable Pipe String |
| 08/04/2011 | CA2787067A1 Shock reduction tool for a downhole electronics package |
| 08/04/2011 | CA2721496A1 Methods and systems for orienting in a bore |
| 08/03/2011 | EP2351955A1 Double-ended flexible pipe joint having stacked co-axial primary and secondary annular elastomeric flex elements |
| 08/03/2011 | EP2350423A1 Well flow control systems and methods |
| 08/03/2011 | EP2350421A1 Rock drilling machine |
| 08/03/2011 | CN201915941U 柔性加重杆 Flexible heavier rod |
| 08/03/2011 | CN201915922U 海洋油田并列双管细分注气管柱 Marine Oilfield segments parallel twin-tube gas injection string |
| 08/03/2011 | CN201915863U 井口油层套管扶正装置 Wellhead production casing centralizer device |
| 08/03/2011 | CN201915862U 点火电缆下井防护器 Ignition cable protectors to go down |
| 08/03/2011 | CN201915861U 轻便型管线槽 Lightweight line slot |
| 08/03/2011 | CN201915860U 一种小井眼多功能滚子扶正器 One kind slimhole versatile roller centralizer |
| 08/03/2011 | CN201915859U 一种套管刚性扶正器 One kind of rigid casing centralizer |
| 08/03/2011 | CN201915858U 一种直棱磙子扶正器 A direct-edge Gunzi centralizer |
| 08/03/2011 | CN201915857U 一种减扭防磨接头 Less wear one kind of twisted joints |
| 08/03/2011 | CN201915856U 一种凿岩机用钎杆钎头结构 One kind of rock drill with drill rod drill head structure |
| 08/03/2011 | CN201915855U 旋转减磨抽油杆接箍 Rotation by grinding rod coupling |
| 08/03/2011 | CN201915854U 整体套装式隔热油管连接结构 Overall package type insulated tubing connecting structure |
| 08/03/2011 | CN201915853U 组合式打捞油管 Combined salvage tubing |
| 08/03/2011 | CN201915852U 高含蜡油井抽油管柱 High waxy oil well pumping string |
| 08/03/2011 | CN201915851U 树脂钢丝复合材料连续抽油杆 Resin composite continuous wire rod |
| 08/03/2011 | CN201915850U 一种钻杆装置及包括该装置的工程机械 A drill apparatus and comprising a mechanical construction of the apparatus |
| 08/03/2011 | CN201915843U Radial polycrystalline diamond bearing for spiral drilling rig transmission shaft |
| 08/03/2011 | CN201915824U 一种兼具地下连续墙施工功能的汽车旋挖钻机 Underground continuous wall construction that is both functional car rotary drilling rig |
| 08/03/2011 | CN102140895A Roller-type centralizer |
| 08/03/2011 | CN102140894A Ball friction-reducing sleeve protective device |
| 08/03/2011 | CN102140893A Magnetorheological intelligent drilling vibration damper |
| 08/03/2011 | CN102140892A Elastic drill rod joint |
| 08/03/2011 | CN102140611A 135 steel-level drill rod connector and heat treatment process thereof |
| 08/03/2011 | CN102140610A Steel suitable for drill rod joint in low-temperature environment and heat treatment process of steel |
| 08/02/2011 | US7988205 Wedge thread with torque shoulder |
| 08/02/2011 | US7987926 Tension/collar/reamer assemblies and methods |
| 08/02/2011 | CA2465563C Chassis for downhole drilling tool |
| 07/29/2011 | CA2728707A1 Gas-blanketed piping connections |
| 07/29/2011 | CA2691902A1 Casing annulus isolation device |
| 07/28/2011 | WO2011090491A1 Downhole device actuator and method |
| 07/28/2011 | WO2011089346A1 Device for uncoupling a drill string, drilling system comprising such a uncoupling device, and use of such a system |
| 07/28/2011 | WO2011056809A3 Core lifter |
| 07/28/2011 | US20110180273 Tapered Spline Connection for Drill Pipe, Casing, and Tubing |
| 07/28/2011 | CA2729230A1 Tapered spline connection for drill pipe, casing and tubing |
| 07/27/2011 | EP2347087A1 Vertical drilling system for controlling deviation |
| 07/27/2011 | CN201908588U Self-positioned roller type sucker rod centralizer |
| 07/27/2011 | CN201908587U Falling-preventing sliding centralizer |
| 07/27/2011 | CN201908586U Anti-falling centering device for sucker rod |
| 07/27/2011 | CN201908585U Follow-up balanced type casing compensator |
| 07/27/2011 | CN201908584U Quick insertion safety connection mechanism for drill rod |
| 07/27/2011 | CN201908583U Pumping rod wear-resistant box coupling with two conical ends |
| 07/27/2011 | CN201908582U Break-way type counter-thread connector capable of preventing drill burning and burying for limit pin |
| 07/27/2011 | CN201908581U Elastic drill rod joint |
| 07/27/2011 | CN201908580U Large-torque drill rod |
| 07/27/2011 | CN201908579U Anti-corrosion wear-resistant composite lining pipe |
| 07/27/2011 | CN201908566U Electric auger boring type bailing tool for oil gas borehole |
| 07/27/2011 | CN102138036A Method and apparatus for connecting drilling riser strings and compositions thereof |
| 07/27/2011 | CN102137981A Drilling tool and method for widening and simultaneously monitoring the diameter of wells and the properties of the fluid |
| 07/27/2011 | CN102134976A Tunnel drilling hydraulic power reverse-circulation dual-walled drilling tool |
| 07/27/2011 | CN102134972A Device for inhibiting vortex-induced vibration of underwater standpipe of fish-tail imitating cowling |
| 07/27/2011 | CN102134971A Marine drilling riser double clamping spring quick connector |
| 07/27/2011 | CN102134970A Device for accurately positioning deep hole in process of testing ground stress |
| 07/27/2011 | CN102134849A Simple stirring pile drilling machine |
| 07/27/2011 | CN101357380B Flight winding machine and steel belt introduction device used by flight winding machine |
| 07/27/2011 | CN101315020B Extendable excavating screw with hydraulic excavating blades |
| 07/26/2011 | US7984763 Full bore lined wellbores |
| 07/26/2011 | CA2640180C A connection apparatus and method |
| 07/21/2011 | US20110174495 Latch System for Friction-Locked Tubular Members |
| 07/21/2011 | US20110174482 Component for drilling and operating hydrocarbon wells |
| 07/20/2011 | EP2344802A1 Component for the drilling and for the exploitation of hydrocarbon wells |
| 07/20/2011 | EP2344796A2 Method for installing an operating rig for a fluid in a body of water with a traction unit |
| 07/20/2011 | EP2231996B1 Sealed threaded tubular connection which is resistant to successive pressure loads |
| 07/20/2011 | EP2225432B1 Riser pipe segment with flanged auxiliary ducts and bayonet connections |
| 07/20/2011 | CN201902200U Rod and pipe circulation heating underground converter for thick oil well |
| 07/20/2011 | CN201902179U Anti-collision protective sleeve for sucker rod |
| 07/20/2011 | CN201902178U Pumping rod shock absorber |
| 07/20/2011 | CN201902177U Drilling fluid release nipple |
| 07/20/2011 | CN201902176U Bumper safety joint |
| 07/20/2011 | CN201902175U Controllable releasing pup joint |
| 07/20/2011 | CN201902174U Special engineering plastic cladding sucker rod coupling |
| 07/20/2011 | CN201902173U Hole guard sleeve pipe for underwater drilling |
| 07/20/2011 | CN201902164U Gas-water separating device |
| 07/20/2011 | CN201902163U Flexible shock-absorbing transmission shaft assembly of spiral drilling rig |
| 07/20/2011 | CN101376946B Manufacturing method of straight welding petroleum casing pipe of steel for 110ksi steel grade |
| 07/20/2011 | CN101376943B Manufacturing method of straight welding petroleum casing pipe of steel for 80ksi steel grade |
| 07/20/2011 | CN101338651B Pre-mixed abrasive high pressure water-jet system rotary pipe joint structure |
| 07/20/2011 | CN101270438B Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| 07/19/2011 | US7980331 Accessible downhole power assembly |
| 07/19/2011 | US7980303 Laminate pressure containing body for a well tool |
| 07/19/2011 | CA2541542C Composite riser with integrity monitoring apparatus and method |
| 07/14/2011 | WO2011084920A1 Spacers having restraint mechanisms to restrain subsea tubular structure |
| 07/14/2011 | WO2011084213A2 Process of applying hard-facing alloys having improved crack resistance and tools manufactured therefrom |
| 07/14/2011 | WO2011083311A2 Downhole tool releasing mechanism |