Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
07/1996
07/23/1996US5538090 Ground probe apparatus
07/23/1996CA2029188C Adjustable angle pipe joint
07/21/1996CA2167666A1 Apparatus and method for snubbing tubing-conveyed perforating guns in and out of a well bore
07/18/1996WO1996021792A2 Riser assembly
07/18/1996CA2152964A1 Rod guide assembly
07/17/1996EP0721539A1 Drill pipe tubing and casing protectors
07/17/1996CN1126793A Torque control device for rotary mine drilling machine
07/16/1996US5535839 Roof drill bit with radial domed PCD inserts
07/16/1996US5535837 Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies
07/11/1996WO1996021085A1 Downhole electricity transmission system
07/11/1996WO1996021083A1 Method and device for casing a well, particularly an oil well bore or a pipe, using an in situ curable flexible tubular preform
07/11/1996WO1996021082A1 Improved isolation system and gravel pack assembly and uses thereof
07/10/1996EP0721053A1 Downhole electricity transmission system
07/10/1996EP0720684A1 Method of and apparatus for horizontal well drilling
07/10/1996CN2230807Y Fixture for hot corlibrating sucker rod
07/09/1996US5533574 For use in drilling/producing a deepwater well
07/09/1996US5533355 Subterranean heat exchange units comprising multiple secondary conduits and multi-tiered inlet and outlet manifolds
07/09/1996CA2085780C Well head isolation tool sealing nipple testing apparatus and method of pressure testing isolation tool sealing nipple seals when in position on a well
07/03/1996EP0670021A4 Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection.
07/02/1996US5531112 Production logging tool for use in a tool string
07/02/1996CA2006674C System for establishing a sealing connection between two axially impacting members in a pipe conduit
06/1996
06/26/1996EP0718463A2 Downhole stinger/housing latch
06/26/1996EP0524183B1 A borehole, as well as a method and an apparatus for forming it
06/26/1996EP0426788B1 High-pressure pipe string for continuous fusion drilling of deep wells, process and device for manufacturing, propelling and dismantling it
06/26/1996CN1125303A Threaded joint for pipes
06/25/1996US5529127 Apparatus and method for snubbing tubing-conveyed perforating guns in and out of a well bore
06/20/1996WO1996018800A1 Method and apparatus for drilling with high-pressure, reduced solid content liquid
06/20/1996WO1996018799A1 Method and apparatus for connecting and disconnecting tubulars
06/20/1996WO1996018798A1 A drilling method and bit assembly to realize the method
06/20/1996WO1996018797A1 Method and apparatus for the injection of cable into coiled tubing
06/20/1996CA2165508A1 Downhole coiled tubing latch
06/19/1996EP0656127A4 Reduced diameter down-hole instrument cable.
06/18/1996US5527220 Articulatable joint with multi-faceted ball and socket
06/18/1996US5526888 Apparatus for axial connection and joinder of tubulars by application of remote hydraulic pressure
06/18/1996US5526881 Preperforated coiled tubing
06/18/1996US5526846 Stiffener with reinforced structure
06/14/1996CA2145907A1 Low friction, high wear rod guide compositions and rod guides made therefrom
06/13/1996WO1996018063A1 Internal coiled tubing connector
06/12/1996CN2228970Y Combined drill collar device
06/12/1996CN1124515A Curved drilling apparatus
06/11/1996US5524937 Internal coiled tubing connector
06/11/1996US5524708 Non-metallic oil well tubing system
06/06/1996WO1996017153A1 Coupling for anchor bars
06/05/1996EP0651852A4 Gravel pack screen for well completions.
06/05/1996CN2228636Y Two-purpose stove for water boiling and warming
06/05/1996CN2228634Y Pressureless water-heating boiler
06/04/1996US5522467 System and stabilizer apparatus for inhibiting helical stack-out
06/03/1996CA2137201A1 Apparatus for drilling curved sections of well holes
05/1996
05/30/1996WO1996016246A1 Thread coupling for drill string elements for percussive drilling
05/30/1996DE4446806C1 Gas-tight pipe connection
05/29/1996EP0713952A1 Threaded joint for oil well pipes
05/29/1996EP0713560A1 Equipment to reduce torque on a drill string
05/29/1996CN2228127Y Oil pipe centralizer
05/28/1996US5520422 High-pressure fiber reinforced composite pipe joint
05/28/1996US5520255 Modulated bias unit for rotary drilling
05/26/1996CA2159309A1 Multiple wet electrical connection make-up in a well
05/23/1996WO1996015352A1 Method and apparatus for forming a window in a subsurface well conduit
05/23/1996WO1996015349A1 A method to drill a hole with a hammer, the hammer and a joint between hammer and drill bit holder
05/22/1996EP0712499A1 Improved slick line system with real-time surface display
05/22/1996EP0517897B1 Stiffener with reinforced structure
05/21/1996US5518076 Grease applicator for a drill shaft
05/21/1996US5518034 Flexible hose with a visibly deformable structure upon an internal failure within the hose
05/21/1996CA2063218C Stand-off compensated formation measurements apparatus and method
05/17/1996WO1996014544A1 Subterranean heat exchange units comprising multiple secondary conduits and multi-tiered inlet and outlet manifolds
05/15/1996EP0584330B1 Reversible bit bearing for percussion drill
05/15/1996CN1122619A Preform or matrix tubular structure for well casing
05/14/1996US5516158 Self-swaging threaded tubular connection
05/14/1996US5515917 Well apparatus
05/14/1996US5515880 Spoolable coiled tubing mandrel and gas lift valves
05/09/1996WO1996013681A1 Pipe connecting assembly and method for joining two lengths of pipe by a press-fit connection
05/09/1996WO1996013649A1 System, method and cutterhead for dry full-area drilling
05/09/1996WO1996013648A1 2-stage underreamer
05/09/1996DE19540427A1 Vorrichtung zum Speichern und Handhaben einer Stange aus Verbundmaterial Apparatus for storing and manipulating a rod made of composite material
05/09/1996CA2182605A1 System, method and cutterhead for dry full-area drilling
05/08/1996EP0515538B1 A down-the-hole drill tool for drilling in advance of a casing tube
05/08/1996CN1121981A Well wall cleaning tool with scrap element
05/08/1996CN1121980A Perforation and oil-pumping united well completion pipe string for oil gas well
05/07/1996US5513929 Fixed offshore platform structures, using small diameter, tensioned, well casing tiebacks
05/07/1996US5513714 Stabilization devices for drill motors
05/02/1996WO1996012911A1 High-pressure fiber reinforced composite pipe joint
05/01/1996EP0709542A2 Anchored wavy conduit in coiled tubing
05/01/1996EP0708872A1 Method and apparatus for controlling the head of a drilling or core-drilling device
05/01/1996CN1121555A Tool for transporting cutting means to and from a ground drill
05/01/1996CN1121554A Insert for releasably retaining cutting means in a ground drill
05/01/1996CN1121552A Drive sub
04/1996
04/30/1996US5512007 System and process for manufacturing a flexible connection in a hollow metal device
04/30/1996US5511627 Downhole stabiliser
04/30/1996US5511619 Polymer liners in rod pumping wells
04/24/1996EP0708225A1 Attenuating element for a telescopically slidable drill string
04/24/1996EP0708224A2 Thread joint for tubes
04/24/1996EP0579631B1 Water extraction components produced by adhesive bonds and their use
04/24/1996EP0502084B1 Device for steering the foremost part of a drill pipe
04/23/1996US5509490 For preventing mud interference to a portion of a drill string
04/23/1996US5509475 Downhole stress absorber
04/17/1996EP0707133A1 Threaded joint for pipes
04/17/1996EP0707132A2 Rotary drill bit
04/17/1996EP0707131A2 Rotary drill bit with rotatably mounted gauge section for bit stabilisation
04/16/1996US5507349 Downhole coiled tubing latch
04/16/1996US5507346 Composite well flow conductor
04/15/1996CA2160176A1 Production logging mechanism for across-the-borehole measurement
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