| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 11/23/1993 | USRE34451 Perforating gun with auger |
| 11/23/1993 | US5263899 Cylindrical telescopic kelly-bar apparatus |
| 11/23/1993 | US5263748 Couplings for standard A.P.I. tubings and casings |
| 11/23/1993 | CA1324573C Method and apparatus for placing a cement lining in a borehole |
| 11/20/1993 | CA2095906A1 Drill string component |
| 11/18/1993 | EP0570028A2 Lengthened tubular pin member/nose for improving sealing integrity and bearing forces |
| 11/17/1993 | CN2146563Y Roll damping sucker rod joint |
| 11/17/1993 | CN2146562Y Self-sealing cleaner for sucker rods |
| 11/16/1993 | US5261498 Drill string component |
| 11/16/1993 | US5261493 Method of testing snap type pipe connectors |
| 11/16/1993 | US5261488 Centralizers for oil well casings |
| 11/10/1993 | CN2145858Y Electrothermal pumping unit |
| 11/03/1993 | CN2145258Y Self-sealed anti-disjoint join |
| 11/03/1993 | CN1078015A Electrically heated pumping unit |
| 11/02/1993 | US5257663 For use in a well |
| 10/28/1993 | WO1993021392A1 Improvements relating to the protection of corrosion-susceptible members |
| 10/27/1993 | EP0451185B1 System and method for sealed connection between two abutting tube ends |
| 10/27/1993 | CN2144705Y Threadless connecting pumping rod |
| 10/26/1993 | US5255739 Clamp for attaching electric submersible pump cable to sucker rod |
| 10/26/1993 | CA1323691C Electrically-nonconducting system for the connection of metal tubular elements, especially suitable for use as an antenna framework located at great depth |
| 10/19/1993 | US5253961 Coupling for drilling machine with dust extractor |
| 10/19/1993 | US5253946 Sucker rod end fitting |
| 10/15/1993 | CA2093062A1 Drill string enclosure |
| 10/14/1993 | WO1993020331A1 Sub-assembly for dust suppression in rock drilling |
| 10/14/1993 | WO1993020327A1 Clamps for use with well tubulars |
| 10/14/1993 | WO1993020325A1 Down reaming apparatus |
| 10/14/1993 | WO1993020288A2 Cut expansion joint sealing device for concrete dams and method for fitting same |
| 10/14/1993 | CA2131380A1 Down reaming apparatus |
| 10/14/1993 | CA2110061A1 Clamps for use with well tubulars |
| 10/13/1993 | EP0565445A1 Apparatus for securing a flexible line having a bend restrictor |
| 10/13/1993 | EP0565287A1 Undulated conduit anchored in coiled tubing |
| 10/13/1993 | CN2143672Y Damping wax-proof anti-slid righting device |
| 10/13/1993 | CN2143671Y Righting device for air injection well mouth |
| 10/12/1993 | US5251710 Stabilized drill tube |
| 10/12/1993 | US5251695 Tubing connector |
| 10/12/1993 | US5251479 Downhole wellbore tool for measuring flow parameters |
| 10/07/1993 | DE4211325A1 Drill string esp. for dry drilling - has inner and outer pipes for pneumatic drill air supply and return |
| 10/06/1993 | EP0564223A1 Flowline safety joint |
| 10/06/1993 | EP0563268A1 Coupling apparatus |
| 10/06/1993 | EP0439600B1 Drill |
| 10/05/1993 | US5250806 Stand-off compensated formation measurements apparatus and method |
| 10/05/1993 | CA1322773C Threaded tubular connection |
| 10/01/1993 | CA2092958A1 Anchor wavey conduit in coiled tubing |
| 09/30/1993 | WO1993019283A1 Anti-rotation devices for use in wellbores |
| 09/30/1993 | WO1993019281A1 Well conduit cutting and milling apparatus and method |
| 09/30/1993 | CA2132858A1 Well conduit cutting and milling apparatus and method |
| 09/29/1993 | CN2142880Y Self-controlled electro-thermal sucker rod |
| 09/29/1993 | CN1076756A Reversible bit bearing |
| 09/28/1993 | US5248166 Flowline safety joint |
| 09/28/1993 | US5248004 Adjustable pipe joint |
| 09/28/1993 | US5247990 Centralizer |
| 09/22/1993 | EP0544835A4 Variable depth grooved drill string member |
| 09/21/1993 | US5246070 Piping for the completion of a groundwater monitoring site |
| 09/21/1993 | US5246069 Self-aligning well apparatuses and anti-rotation device for well apparatuses |
| 09/16/1993 | WO1993018330A1 Buttress-threaded tubular connection |
| 09/16/1993 | WO1993018329A1 Stabilized center-shoulder-sealed tubular connection |
| 09/16/1993 | WO1993018274A1 A method and a device for sealing between a casing and a drill hole in rock drilling operations |
| 09/16/1993 | WO1993018273A1 Downhole tool for controlling the drilling course of a borehole |
| 09/16/1993 | DE4211081C1 Multiple drill pipe - allows limited inner pipe projection to facilitate coupling to other drill pipes |
| 09/16/1993 | CA2131821A1 Stabilized center-shoulder-sealed tubular connection |
| 09/14/1993 | US5244049 Rock drilling device |
| 09/08/1993 | EP0558534A1 Well completion system |
| 09/07/1993 | US5242020 Method for deploying extendable arm for formation evaluation MWD tool |
| 09/03/1993 | WO1993018272A1 Reversible bit bearing for percussion drill |
| 09/03/1993 | CA2109302A1 Reversible bit bearing |
| 09/02/1993 | WO1993017215A1 Method for overburden drilling, casing shoe and casing tube for the method, and coupling element for the casing tubes |
| 09/01/1993 | EP0557485A1 Rock-drilling bit |
| 09/01/1993 | CN2141458Y Uniform strength hard and soft multi-layer sealing hollow oil suction rod |
| 08/31/1993 | US5240353 Anchor with deoperable screw |
| 08/31/1993 | US5240082 Rotary boring machine |
| 08/31/1993 | CA1321808C Hermetic metal pipe joint |
| 08/24/1993 | US5238273 Apparatus for internally connecting to coiled tubing |
| 08/24/1993 | US5238062 Centralizer for centring drilling and casing pipes and centralizing arrangement including said centralizer |
| 08/18/1993 | CN2140425Y Multifunctional rotating apparatus for sucker rod |
| 08/17/1993 | US5236230 For joining lengths of first and second tubular conduits |
| 08/17/1993 | US5236048 Apparatus and method for communicating electrical signals in a well, including electrical coupling for electric circuits therein |
| 08/17/1993 | US5236047 Electrically operated well completion apparatus and method |
| 08/17/1993 | US5236037 Unitized wellhead system |
| 08/17/1993 | US5236036 Device for delivering corrosion or deposition inhibiting agents into a well by means of an auxiliary delivery tube |
| 08/17/1993 | US5236018 To extend the drilling column |
| 08/11/1993 | EP0554977A1 Stabilisation devices for drill motor |
| 08/10/1993 | US5234063 Removable wear protective means for a drilling tool |
| 08/10/1993 | US5234058 Composite rod-stiffened spoolable cable with conductors |
| 08/05/1993 | WO1993015302A1 In-line sub for drilling equipment |
| 08/05/1993 | WO1993015300A1 Device for positioning member and excavating direction control device for excavator employing said device |
| 08/05/1993 | WO1993015299A1 Down-the-hole rock drill |
| 08/05/1993 | CA2128878A1 In-line sub for drilling equipment |
| 08/04/1993 | EP0553732A1 Method and apparatus for relaying downhole data to the surface |
| 08/04/1993 | CN2139623Y Slip type casing joint for oil gas wellhead |
| 08/04/1993 | CN2139622Y Elastomer sealing ring sealed drilling rod and joint |
| 08/03/1993 | US5232060 Double-acting accelerator for use with hydraulic drilling jars |
| 08/03/1993 | CA1320983C Tubular joint with seal |
| 08/03/1993 | CA1320903C Apparatus for use in wells |
| 08/01/1993 | CA2088452A1 Method and apparatus for relaying downhole data to the surface |
| 07/31/1993 | CA2059215A1 Hydraulic rod pusher-puller apparatus |
| 07/28/1993 | EP0527890A4 Oilfield equipment identification apparatus |
| 07/27/1993 | US5230383 Electrically actuated well annulus safety valve |
| 07/22/1993 | WO1993014294A1 Tubing connector |
| 07/21/1993 | EP0551795A1 Tool for impact drilling and chiseling and chuck therefor |
| 07/21/1993 | EP0551340A1 Rotational connectors |