| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 09/11/2001 | US6286627 Fluid dispensing apparatus |
| 09/11/2001 | US6286595 Tubing system for an oil or gas well |
| 09/11/2001 | US6286558 Composite spoolable tube |
| 09/07/2001 | WO2001065718A2 Wireless power and communications cross-bar switch |
| 09/07/2001 | WO2001065069A1 Oilwell casing electrical power pick-off points |
| 09/07/2001 | WO2001065068A1 Wireless reservoir production control |
| 09/07/2001 | WO2001065066A1 Wireless communication using well casing |
| 09/07/2001 | WO2001065063A1 Wireless downhole well interval inflow and injection control |
| 09/07/2001 | WO2001065062A2 Use of downhole high pressure gas in a gas-lift well |
| 09/07/2001 | WO2001065061A1 Electro-hydraulically pressurized downhole valve actuator |
| 09/07/2001 | WO2001065059A1 Thread joint and rock drill element |
| 09/07/2001 | WO2001065058A1 Thread joint and rock drill element |
| 09/07/2001 | WO2001065057A1 Combined logging and drilling system |
| 09/07/2001 | WO2001065056A1 Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/07/2001 | WO2001065055A1 Controlled downhole chemical injection |
| 09/07/2001 | WO2001065054A1 Power generation using batteries with reconfigurable discharge |
| 09/07/2001 | WO2001065053A1 Tracer injection in a production well |
| 09/07/2001 | WO2001065051A1 Rock drill bit and method for its manufacturing |
| 09/07/2001 | WO2001064813A2 Conductive medium for openhole logging and logging while drilling |
| 09/07/2001 | CA2401705A1 Wireless downhole measurement and control for optimizing gas lift well and field performance |
| 09/07/2001 | CA2401278A1 Conductive medium for openhole logging and logging while drilling |
| 09/07/2001 | CA2397155A1 Thread joint and rock drill element |
| 09/07/2001 | CA2397146A1 Rock drill bit and method for its manufacturing |
| 09/06/2001 | US20010020053 Expandable and curable flexible preform containing unsaturated resins, for casing a well or a line |
| 09/06/2001 | US20010018990 Rock drill bit having retrac teeth and method for its manufacturing |
| 09/05/2001 | EP1130214A1 Corrosion inhibitors |
| 09/05/2001 | EP1129272A1 Method and apparatus for remote control of a tubing exit sleeve |
| 09/05/2001 | EP0771400B1 Drill pipe with improved connectors |
| 09/05/2001 | CN2446276Y Constent pressuring device for drilling tool |
| 09/05/2001 | CN2446275Y Deep water pumping tube |
| 09/04/2001 | US6283477 Annular chamber seal |
| 09/04/2001 | US6283206 Gas lift umbilical cable and termination assemblies therefor |
| 09/04/2001 | US6283205 Polymeric centralizer |
| 08/30/2001 | WO2001063161A1 Pipe joint |
| 08/30/2001 | WO2001063087A1 Bore cleaning |
| 08/30/2001 | WO2001025652A3 Torque transmission system for helical drilling tools |
| 08/30/2001 | US20010017222 Directional drilling components and adaptors |
| 08/29/2001 | EP1127210A1 Connector for an expandable tubing string |
| 08/29/2001 | EP1127209A1 Thread coupling for a drill string for percussive rock drilling |
| 08/28/2001 | US6280874 Annular pack |
| 08/28/2001 | US6279962 Safety joint |
| 08/28/2001 | US6279669 Indexing mechanism and apparatus incorporating the same |
| 08/28/2001 | US6279660 Apparatus for optimizing production of multi-phase fluid |
| 08/28/2001 | US6279658 Method of forming and servicing wellbores from a main wellbore |
| 08/28/2001 | US6279392 Method and system for distributed well monitoring |
| 08/23/2001 | WO2001061262A1 Heat exchange systems |
| 08/23/2001 | WO2001061143A1 Recirculatable ball-drop release device for lateral oilwell drilling applications |
| 08/23/2001 | WO2001061064A1 Elongated element and steel for percussive rock drilling |
| 08/23/2001 | US20010015276 Wellbore flow control device |
| 08/22/2001 | EP1125965A1 Expandable and settable deployable preform containing unsaturated resins, use for casing of wells or canalisation |
| 08/22/2001 | CN2444054Y Well head device for extracting oil with turning regulating type suspending device |
| 08/22/2001 | CN2444051Y Turning type disconnecting device |
| 08/22/2001 | CN1309228A Insulating steel tube and its making technology |
| 08/21/2001 | US6276464 Stake coupler for a horizontal directional drill |
| 08/21/2001 | US6276456 Riser system for sub-sea wells and method of operation |
| 08/21/2001 | CA2179952C Adapter for oil well tubings |
| 08/16/2001 | WO2001059258A1 A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system |
| 08/16/2001 | WO2001059249A2 Drill pipe torque-reduction and protection apparatus |
| 08/16/2001 | US20010013428 Drilling system |
| 08/16/2001 | US20010013414 Floating spar for supporting production risers |
| 08/16/2001 | EP1123454A1 System, apparatus, and method for installing control lines in a well |
| 08/16/2001 | EP0832345B1 Subsurface signal transmitting apparatus |
| 08/15/2001 | CN1308715A Heavy weight drill pipe |
| 08/15/2001 | CN1308704A A method of extending the length of a drill string, a drill string element and a coupling member |
| 08/14/2001 | US6273634 Connector for an expandable tubing string |
| 08/14/2001 | US6273474 Threaded connection for internally clad pipe |
| 08/14/2001 | US6273193 Dynamically positioned, concentric riser, drilling method and apparatus |
| 08/09/2001 | US20010012703 Data transfer system |
| 08/09/2001 | US20010011591 Guide device |
| 08/09/2001 | US20010011589 Tubular filling system |
| 08/08/2001 | CN2441970Y Quick loading and unloading thread protector of casing |
| 08/08/2001 | CN1069376C Shock absorbing assembly |
| 08/08/2001 | CA2334496A1 Flexible expandable preform having a hardening capacity and containing non-saturated resins, for well tubing or a water-supply system |
| 08/07/2001 | US6270127 Two-step, low torque wedge thread for tubular connector |
| 08/07/2001 | US6269883 Disconnect tool |
| 08/07/2001 | US6269879 Sleeve liner for wireline entry sub assembly |
| 08/02/2001 | WO2001055555A1 Choke inductor for wireless communication and control in a well |
| 08/02/2001 | WO2001055554A1 Downhole wireless two-way telemetry system |
| 08/02/2001 | WO2001055553A1 System and method for fluid flow optimization in a gas-lift oil well |
| 08/01/2001 | EP1119684A1 A reinforced flexible tubular pipe with conveying back of leak fluid |
| 08/01/2001 | CN2440974Y Broken polish rod sealer in oil well |
| 08/01/2001 | CN2440937Y Pipe |
| 07/31/2001 | US6267537 Riser bundle |
| 07/31/2001 | US6267172 Heat exchange systems |
| 07/26/2001 | WO2001054140A1 Fiber optic well logging cable |
| 07/26/2001 | WO2001053653A1 A polymeric centralizer |
| 07/26/2001 | WO2001053652A1 Centraliser |
| 07/26/2001 | WO2001053651A1 Seafloor-surface linking device comprising a stabilising element |
| 07/25/2001 | EP1117898A1 Thread coupling for a drill string for percussive rock drilling |
| 07/25/2001 | EP1117897A1 String of drill pipes for rotary percussion drilling, especially for simultaneous drilling |
| 07/25/2001 | EP0927085A4 In situ deep remediation injection system & method |
| 07/25/2001 | EP0898637B1 Slip joint |
| 07/25/2001 | CN1305561A Drill rod coupling |
| 07/25/2001 | CN1305046A Multiple air hammer device and trenching direction correcting method |
| 07/24/2001 | US6264244 End connector for composite coiled tubing |
| 07/24/2001 | US6263988 Downhole drill system and de-coupling assembly |
| 07/24/2001 | US6263985 Drilling machine with changeable drive unit |
| 07/24/2001 | US6263983 Apparatus for directional drilling |
| 07/24/2001 | CA2255179C Drilling motor drill bit reaming stabilizer |
| 07/24/2001 | CA2221069C Method for horizontal directional drilling of rock formations |