| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 08/31/2005 | EP1436482A4 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 08/31/2005 | CN2721869Y Layer adjusting producing tubular column with multiple oil layer |
| 08/31/2005 | CN2721866Y Under-mine casing-pipe valve |
| 08/31/2005 | CN2721858Y Eccentric oil pipe anchor for preventing rotation |
| 08/31/2005 | CN2721855Y Forced righting device for preventing incline of sucker rod |
| 08/31/2005 | CN2721854Y Shock absorbing rod |
| 08/31/2005 | CN2721853Y High strength shock absorbing rod |
| 08/31/2005 | CN2721852Y High wear-resisting and corrosive-proof sucker rod |
| 08/31/2005 | CN1662726A Male portion, drill bit and threaded joint for percussive rock drilling |
| 08/31/2005 | CN1661196A Screwdrill of synergic action |
| 08/31/2005 | CN1217118C Spacing locator for U-bend |
| 08/30/2005 | US6935442 Stabilizer device for rotary string of drill rods with reduced friction |
| 08/30/2005 | US6935430 Method and apparatus for expanding a welded connection |
| 08/30/2005 | US6935429 Flash welding process for field joining of tubulars for expandable applications |
| 08/30/2005 | US6935423 Borehole retention device |
| 08/30/2005 | CA2361359C Method and apparatus for multilateral junction |
| 08/27/2005 | CA2490176A1 Fiber reinforced spoolable pipe |
| 08/25/2005 | WO2005042905A3 A piggable flowline-riser system |
| 08/25/2005 | WO2005021921A3 A method of radially expanding and plastically deforming tubular members |
| 08/25/2005 | WO2004109052A3 Drilling string torsional energy control assembly and method |
| 08/25/2005 | US20050187115 nonmetallic particles and binders, used for protecting thread surfaces from friction or failure |
| 08/25/2005 | US20050183892 Casing and liner drilling bits, cutting elements therefor, and methods of use |
| 08/25/2005 | US20050183890 Device for connecting two elements having a substantially cylindrical or tubular shape |
| 08/25/2005 | US20050183864 Centraliser |
| 08/25/2005 | US20050183860 Wireline coupler |
| 08/25/2005 | DE102004003481A1 Meßeinrichtung und Bohrvorrichtung für Tiefbohrungen sowie Verfahren zur Messung relevanter Daten bei Tiefbohrungen Measuring device and drilling device for deep drilling and method for measuring relevant data in deep wells |
| 08/24/2005 | CN2720095Y Safety stripper joint |
| 08/24/2005 | CN2720092Y Sucker-rod automatic rotating device |
| 08/24/2005 | CN2720091Y Sucker-rod rotating device |
| 08/24/2005 | CN2720090Y Grind shoe for finishing casing-tube path and fixing lining tube |
| 08/24/2005 | CN2720089Y Rotary hoop-jointing centering guide for screw pump |
| 08/24/2005 | CN2720088Y Laminated diameter-changing centering guide |
| 08/24/2005 | CN2720087Y Diameter-changing centering guide |
| 08/24/2005 | CN2720086Y Bias-wear-resisting direction-regulating centering guide for sucker rod of worm pump well |
| 08/24/2005 | CN2720085Y Integrated piston type shock-reducing rod |
| 08/24/2005 | CN2720084Y High-pulling-force anti-drop shock-reducing rod |
| 08/24/2005 | CN2720083Y Joint capable of dismounting drill rod |
| 08/24/2005 | CN2720082Y Rotary joint for well completion |
| 08/24/2005 | CN2720081Y Universal coupling short joint for sucker rod |
| 08/24/2005 | CN2720080Y Oil-well casing tube for dilling well |
| 08/24/2005 | CN1657744A Apparatus and method for acquiring information while drilling |
| 08/23/2005 | US6932161 Profiled encapsulation for use with instrumented expandable tubular completions |
| 08/23/2005 | US6932155 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| 08/23/2005 | CA2334683C Drill pipe protector assembly |
| 08/23/2005 | CA2253275C Tubing connector |
| 08/18/2005 | US20050178562 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 08/18/2005 | US20050178551 Method and apparatus for stimulation of multiple formation intervals |
| 08/18/2005 | DE102005004606A1 Einstellbares, im Bohrloch anzuordnendes Werkzeug Adjustable, to be arranged in the downhole tool |
| 08/18/2005 | DE102004003479A1 Bohrgestänge für Tiefbohrungen Drill pipe for deep drilling |
| 08/17/2005 | EP1564366A1 Method for trenchless laying of plastic pipes |
| 08/17/2005 | CN2718217Y By-pass safety valve for petroleum drilling tool |
| 08/17/2005 | CN2718209Y Oil pipe rubber anchoring device |
| 08/17/2005 | CN2718206Y Rolling centralising device for repairing casing |
| 08/17/2005 | CN2718205Y Plugging sucker rod centering paraffin scraper |
| 08/17/2005 | CN2718204Y Centralising device for synneusis diamond drilling tool |
| 08/17/2005 | CN2718203Y Wear resisting device of casing for well drilling |
| 08/17/2005 | CN2718202Y Draw bar fast joint |
| 08/17/2005 | CN2718201Y Flexible reducing joint for engineering drilling machine and shaft drilling machine |
| 08/17/2005 | CN2718200Y Sucker rod guide device |
| 08/17/2005 | CN2718199Y Tubing anchor |
| 08/17/2005 | CN1656297A A thread joint for a drill string for percussive rock-drilling |
| 08/17/2005 | CN1215277C Fatigue-resistant threaded bevelled tubular element |
| 08/16/2005 | US6929493 Electrical contact for downhole drilling networks |
| 08/16/2005 | US6929065 Latch-type tubing protector having C-shaped clamping members, a minimized running profile and a large holding force |
| 08/16/2005 | US6928864 Tool assembly and monitoring applications using same |
| 08/16/2005 | US6928709 Apparatus for remote installation of devices for reducing drag and vortex induced vibration |
| 08/16/2005 | CA2483951C Male portion, drill bit and threaded joint for percussive rock drilling |
| 08/16/2005 | CA2200076C Drill rod |
| 08/16/2005 | CA2160400C Well rod, centralizer and centralizer stop interfaces with wear reducing surface |
| 08/11/2005 | WO2005073496A1 Assembly and method for stiffening a flexible pipe |
| 08/11/2005 | WO2005072354A1 Rotationally locked wear sleeve for through-tubing drilling and completion |
| 08/11/2005 | US20050175415 Apparatus and methods for remote installation of devices for reducing drag and vortex induced vibration |
| 08/11/2005 | US20050175413 Stress limiting device for offshore oil reservoir production pipe |
| 08/11/2005 | US20050173155 Down hole motor with locking mechanism |
| 08/11/2005 | US20050173154 Method and system for connecting pipe to a top drive motor |
| 08/11/2005 | US20050173128 Apparatus and Method for Routing a Transmission Line through a Downhole Tool |
| 08/11/2005 | US20050173109 Profiled recess for instrumented expandable components |
| 08/11/2005 | US20050172473 Method and apparatus for forming a mono-diameter wellbore casing |
| 08/11/2005 | CA2496649A1 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 08/10/2005 | EP1224417B1 Composite coiled tubing end connector and pipe-to-pipe connector |
| 08/10/2005 | CN2716490Y Bending regulating centralizing tripping-proof device |
| 08/10/2005 | CN2716489Y Freely telescopic ground gas injection pipe compensator |
| 08/10/2005 | CN2716488Y Guide rail type deflection proof coupling centralizer |
| 08/10/2005 | CN1651712A Slim type oil well pipe fitting |
| 08/09/2005 | US6926283 Metal-to-metal sealing system |
| 08/09/2005 | US6926098 Insulative gap sub assembly and methods |
| 08/09/2005 | CA2205902C Thread coupling for drill string elements for percussive drilling |
| 08/09/2005 | CA2152767C Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies |
| 08/04/2005 | WO2005071224A2 Measuring device and drilling device for deep drillings |
| 08/04/2005 | WO2005071215A1 Method and device to clamp control lines to tubulars |
| 08/04/2005 | WO2005071214A1 The method and apparatus for preventing the friction induced rotation of non-rotating stabilizers |
| 08/04/2005 | WO2005071213A1 A casing for supporting a wall of a bore formed in the ground with watertighting joint section and method of making a secant pile wall using the segmental casing |
| 08/04/2005 | WO2005071212A1 Expandable connection |
| 08/04/2005 | WO2005071211A2 Drill stem for deep drillings |
| 08/04/2005 | WO2005071208A1 Downhole drilling of a lateral hole |
| 08/04/2005 | US20050167159 Drilling fluid for casing drilling |
| 08/04/2005 | US20050167098 [wellbore communication system] |
| 08/04/2005 | US20050166988 Assembly and method for stiffening a flexible pipe |
| 08/04/2005 | US20050166987 Clad pipe |
| 08/04/2005 | US20050166388 Method and apparatus for forming a mono-diameter wellbore casing |