| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 05/24/1995 | EP0654583A2 Eccentric fluid displacement sleeve |
| 05/23/1995 | US5417291 Drilling connector |
| 05/18/1995 | DE4401915C1 Hammer drill with plate |
| 05/17/1995 | EP0653544A2 Twist drill |
| 05/16/1995 | US5415442 Stabilized center-shoulder-sealed tubular connection |
| 05/16/1995 | US5415441 Push-on coupling apparatus for tubular well completion structures |
| 05/13/1995 | CA2133036A1 Eccentric fluid displacement sleeve |
| 05/11/1995 | DE4345119C1 Pipe connector |
| 05/10/1995 | EP0651852A1 Gravel pack screen for well completions |
| 05/10/1995 | CN2196685Y Casing-tube elastic rotary-flow righter |
| 05/09/1995 | US5413184 Method of and apparatus for horizontal well drilling |
| 05/09/1995 | US5413170 Spoolable coiled tubing completion system |
| 05/09/1995 | CA2072302C Rock drill bit and method of making same |
| 05/09/1995 | CA2036390C A pipe joint for driving pipes laid underground by the driving technique |
| 05/09/1995 | CA1335500C Downhole stabilisers |
| 05/04/1995 | WO1995012051A1 Tool for maintaining wellbore penetration |
| 05/03/1995 | EP0651130A2 Packing sleeve for a well packer and method for constructing such a packer |
| 05/02/1995 | US5411301 Tubing connection with eight rounded threads |
| 05/02/1995 | US5411085 Spoolable coiled tubing completion system |
| 05/02/1995 | US5411083 Inflatable well seal |
| 05/02/1995 | US5411081 Spoolable flexible hydraulically set, straight pull release well packer |
| 05/02/1995 | US5410979 Small fixed teardrop fairings for vortex induced vibration suppression |
| 05/02/1995 | CA1335449C Drilling equipment |
| 05/02/1995 | CA1335448C Flexible drill string member especially for use in directional drilling |
| 04/27/1995 | WO1995011404A1 Well tool |
| 04/27/1995 | WO1995011368A1 Stabiliser for a downhole apparatus |
| 04/27/1995 | DE4336245A1 Rod, in particular for a drill stem (string) |
| 04/27/1995 | DE4335397A1 Method and device for regenerating contaminated soil |
| 04/27/1995 | CA2174077A1 Stabiliser for a downhole apparatus |
| 04/20/1995 | WO1995010685A2 Drill pipe tubing and casing protectors |
| 04/20/1995 | WO1995010683A1 Down reaming apparatus |
| 04/20/1995 | CA2173870A1 Down reaming apparatus |
| 04/20/1995 | CA2118287A1 Integral joint for connecting two pipes |
| 04/19/1995 | EP0648967A1 Improved integral joint for connecting two pipes |
| 04/19/1995 | CN2194975Y Geological drill rod coupling |
| 04/18/1995 | US5407292 Connector assembly for connecting two cylindrical members |
| 04/18/1995 | US5407011 Downhole mill and method for milling |
| 04/13/1995 | WO1995009967A1 Downhole activated process and apparatus for completing a wellbore |
| 04/13/1995 | WO1995009963A1 Method of and apparatus for horizontal well drilling |
| 04/13/1995 | CA2172498A1 Method of and apparatus for horizontal well drilling |
| 04/11/1995 | US5405461 Method of producing high Strength sucker rod coupling |
| 04/11/1995 | US5405457 High strength sucker rod coupling |
| 04/11/1995 | US5404944 Downhole makeup tool for threaded tubulars |
| 04/05/1995 | EP0646695A1 Method of fracturing subsurface formations |
| 04/05/1995 | EP0646693A2 Bottom hole assembly for directional drilling |
| 04/05/1995 | CN2193920Y Simple casing joint |
| 04/05/1995 | CN1101108A Apparatus and method for coupling elongated members |
| 04/04/1995 | US5403130 For creation of breaches in concrete or masonry |
| 04/04/1995 | US5402856 Anti-whirl underreamer |
| 04/04/1995 | CA2065175C Wellhead bowl protector |
| 03/31/1995 | CA2120797A1 Well completions with expandable casing portions |
| 03/29/1995 | EP0645519A1 Drilling device with telescoping Kelly tube |
| 03/29/1995 | EP0644979A1 Method and apparatus for inspecting subsurface environments |
| 03/28/1995 | US5402165 Dual lighting system and method for a video logging |
| 03/28/1995 | US5400861 Rotatable cutting bit assembly |
| 03/22/1995 | EP0517874B1 Device comprising two elements hinged in a plane, used in drilling equipment |
| 03/22/1995 | CN2192715Y Righting apparatus |
| 03/21/1995 | US5399042 Axial/radial swivel |
| 03/16/1995 | WO1995007405A1 Flexible riser system |
| 03/15/1995 | CN1100176A Steel for high-strength non-magnetic drill collar |
| 03/14/1995 | US5396966 Steering sub for flexible drilling |
| 03/14/1995 | US5396956 Well head isolation tool sealing nipple testing apparatus and method of pressure testing isolation tool sealing nipple seals when in position on a well |
| 03/14/1995 | US5396950 Apparatus and methods for horizontal completion of a water well |
| 03/14/1995 | CA2128152A1 Wireline wet connection |
| 03/09/1995 | DE4329973A1 Process for producing a double-walled drilling rod, and double-walled drilling rod produced by the process |
| 03/08/1995 | EP0641915A2 Oil well pipe and method for making the same |
| 03/08/1995 | CN2191272Y Wear-proof twist bit rod |
| 03/07/1995 | US5394940 Sucker rod guide |
| 03/07/1995 | US5394938 Gravel pack screen for well completions |
| 03/07/1995 | US5394823 Pipeline with threaded pipes and a sleeve connecting the same |
| 03/01/1995 | EP0640744A2 Reinforced steel concrete section tube |
| 03/01/1995 | EP0511254B1 Centralizers for oil well casings |
| 03/01/1995 | CN2190693Y Involutive smooth rod clip |
| 03/01/1995 | CN1027768C Rock drill bit and method of making same |
| 02/28/1995 | US5392867 Device for remotely operating and assembly comprising a bean/needle system, and use thereof in a drill string |
| 02/28/1995 | US5392851 Wireline cable head for use in coiled tubing operations |
| 02/28/1995 | CA1334572C Process for the production of tubular bodies |
| 02/23/1995 | WO1995005521A1 Equipment to reduce torque on a drill string |
| 02/22/1995 | EP0639690A1 Double wall pipe for propulsion technique and construction of pipe end of leading pipe |
| 02/21/1995 | US5390966 Single connector for shunt conduits on well tool |
| 02/21/1995 | US5390749 Apparatus for positioning a split retaining ring in a down-hole percussive drill |
| 02/21/1995 | US5390742 Internally sealable perforable nipple for downhole well applications |
| 02/16/1995 | WO1995004867A2 Universal torsional flexing and deflectional combination tools |
| 02/14/1995 | US5389003 Wireline wet connection |
| 02/14/1995 | US5388655 Injection boring anchor with auger blade |
| 02/12/1995 | CA2103871A1 Chthonic universal combination tools |
| 02/09/1995 | WO1995004290A1 Improved slick line system with real-time surface display |
| 02/09/1995 | WO1995004237A1 Perforated fiber reinforced pipe |
| 02/09/1995 | DE4326000A1 Pin drill bit for percussive drilling |
| 02/07/1995 | CA1334297C Well tubing liner system |
| 02/02/1995 | WO1995003475A1 Slimhole coring system |
| 02/02/1995 | WO1995003472A1 Method and apparatus for controlling the head of a drilling or core-drilling device |
| 02/02/1995 | WO1995003471A1 Elastomeric joint and articulated coupling and progressive cavity device using the same |
| 02/01/1995 | CN1098162A Underground border with down hammer |
| 01/27/1995 | CA2101299A1 Vertical bore hole system and method for waste storage and energy recovery |
| 01/25/1995 | EP0635622A1 A landing nipple |
| 01/25/1995 | EP0635621A1 A lock mandrel |
| 01/25/1995 | CN2188129Y Leakproof joint for Kelly bar |
| 01/25/1995 | CN1097838A Repairing technology for improving the strength of oil pump rod |
| 01/24/1995 | US5383692 For joints of pipe |