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)
05/1990
05/16/1990EP0368795A1 Pipe connector
05/16/1990CN1042212A Underground sucker rod lengthening apparatus
05/15/1990US4924949 Drill pipes and casings utilizing multi-conduit tubulars
05/15/1990US4924948 Shock absorbing bit retaining ring
05/09/1990EP0367240A1 Adaptor for drilling strings with a controllable air passage
05/08/1990US4923006 Insulating support for tubing string
05/03/1990WO1990004699A2 Float collar and plug for use in wells
05/03/1990DE3905286C1 Boring rod for a flush-boring stem
05/03/1990DE3837161A1 Advancement pipe for advancing from vertical shafts
05/02/1990EP0365612A1 Drill.
05/01/1990US4921438 Wet connector
05/01/1990US4921407 Production pump for high gravity or sand laden oil
05/01/1990US4921057 Method and device for making a hole in the ground
05/01/1990US4921044 Well injection systems
04/1990
04/25/1990CN1041645A Hermetic metal pipe joint
04/24/1990US4919728 Method of manufacturing nonmagnetic drilling string components
04/24/1990US4919560 Oil well sucker rod
04/24/1990US4919221 Impact drill bit assembly and replaceable parts thereof
04/24/1990US4919208 Method and apparatus for manipulating tubing in a well
04/24/1990US4919205 Sucker rod coupling
04/24/1990US4919202 Sucker rod guide bearing
04/24/1990CA1268195A1 Insert for insulated steam injection tubing
04/19/1990WO1990004082A2 An underground pipe for a thrust boring method and a connecting construction of the underground pipe for the same
04/18/1990EP0364413A1 Hermetic metal pipe joint
04/18/1990EP0363734A2 Drilling tool with a helical conveying part
04/17/1990US4917409 Tubular connection
04/17/1990CA1267983A1 Poly(vinylidene fluoride) composition having an improved behaviour when contacted with hydrocarbons; its use for producing oil industry tubing
04/17/1990CA1267834A1 Rotatable reciprocating collar for borehole casing and stage cementing apparatus
04/11/1990CN2055856U Automatic adjustable light drilling rod hanging rope device
04/11/1990CN1007530B Joint for steel tubes, its manufacturing process and a set of tool to carry out the process
04/10/1990US4915426 Pipe coupling for well casing
04/10/1990US4915423 Remote release coupling
04/10/1990US4915177 Blast joint for snubbing installation
04/10/1990US4915172 Method for completing a non-vertical portion of a subterranean well bore
04/10/1990US4914826 Decentralized well logging apparatus for measuring the diameters of a borehole along its perpendicular diametrical axes
04/05/1990DE3832832A1 Fluid-tight pipe-joint inner seal, in particular for socket pipes or socket-free pipes, e.g. advancement pipes, consisting, in their material in the static core, of concrete, reinforced concrete, prestressed concrete or other building materials, e.g. asbestos cement, for lined or non-lined pipes
04/04/1990EP0362011A1 Method and apparatus for analysing a multi-phase flow in a hydrocarbon well
04/04/1990EP0361639A2 Bar-like molding made of fiber-reinforced plastic material and method of manufacturing the same
04/04/1990CN2055531U Twist drill rod with double head capable for using moving drill tail
04/03/1990US4913592 Floating structure using mechanical braking
04/03/1990US4913466 Inner pipe member for dual-wall drill pipe assembly
04/03/1990US4913464 Tubular joint with seal
04/03/1990US4913239 Submersible well pump and well completion system
04/03/1990US4913230 Sucker rod centralizer
04/03/1990US4913229 Coupling for releasing tubing strings from downhole tools
04/03/1990US4913227 Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment
04/03/1990CA1267359A1 Temporary protection device and method for a servicing tool or measuring instrument at the head of a column
03/1990
03/28/1990EP0360364A2 Riser tensioner
03/27/1990US4912415 Sonde of electrodes on an earth drill for measuring the electric formation resistivity in earth strata
03/27/1990US4911579 Swivel arrangement for connecting a boring or reaming tool to a cable
03/27/1990US4911483 Resilient ball joint support
03/27/1990US4911479 Durable blast joint
03/27/1990US4911239 Method and apparatus for removal of oil well paraffin
03/27/1990US4911237 Running tool for liner hanger
03/27/1990CA1267172A1 Sealing arrangement for pin and box threaded connection of tubular members
03/21/1990EP0197050B1 Metal-to-metal wedge thread coupling connector
03/21/1990CN1040650A Test technology for thermally cyclic parallel-pipe oil extraction
03/20/1990US4909741 Wellbore tool swivel connector
03/20/1990US4909327 Marine riser
03/20/1990US4909322 Casing centralizer
03/20/1990US4909321 Wireline releasing device
03/14/1990CN2054481U Abutting unit for sucker rod
03/13/1990US4907663 Drilling tool
03/13/1990US4907661 Drill pipe tubing and casing protectors
03/13/1990US4907660 Interchangeable sectional mining drill and bolt driver system
03/13/1990CA1266695A1 Well pipe joint
03/08/1990WO1990002244A1 A drill for rock and concrete
03/08/1990DE3928958A1 Gewindeverbindung von rohrendabschnitten und verfahren zu deren herstellung Threaded connection of pipe end and processes for their preparation
03/07/1990CN2054070U Unlinking and linking device for oil sucker rod
03/06/1990US4906137 Apparatus for transferring fluid between subsea floor and the surface
03/06/1990US4905777 Device for producing drilling holes from an angled position with respect to the drilling axis
03/06/1990US4905776 Self-balancing drilling assembly and apparatus
03/06/1990US4905773 Self-propelled subsoil penetrating tool system
03/06/1990US4905760 Sucker rod coupling with protective coating
03/06/1990US4905759 Collapsible gun assembly
02/1990
02/28/1990EP0356417A1 Process for manufacturing stress corrosion crack-resistant tubular bodies, particularly non-magnetizable austenitic steel drill collars, and bodies obtained thereby
02/28/1990EP0355379A2 Drilling-injection anchor
02/27/1990US4904228 Universal ball joint
02/27/1990US4903992 Locking ring for oil well tool
02/27/1990US4903785 Drilling and chiseling tool bit
02/27/1990US4903764 Swivelsub
02/21/1990CN1039889A Screw-threaded joint for pipes
02/21/1990CN1039866A Joining of hollow drill rads
02/20/1990US4902047 Thread connector anti-rotation device
02/20/1990US4901806 Apparatus for controlled absorption of axial and torsional forces in a well string
02/20/1990US4901803 Method and equipment for performing drilling operations and servicing in an underwater well from a floating surface installation
02/20/1990CA1266043A1 Auger drilling system
02/14/1990EP0354887A1 Method to establish a thread coupling
02/14/1990CN2052810U Anti-slip device for reverse screw pump bar
02/14/1990CN1039636A Hollow drill rods
02/13/1990US4901069 Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
02/13/1990US4900071 Undersea hydraulic coupling with dovetail seal
02/13/1990US4900066 Pipe connector
02/13/1990CA1265782A1 Directional drilling of a drill string
02/07/1990EP0353309A1 Method of constructing a well
02/07/1990CN1039464A Drill pipes and casings utilizing multi-conduit tubulars
02/06/1990US4898236 Drill stem testing system
02/06/1990CA1265582A1 Current sensing alarm arrangement for monitoring the presence of high voltage
01/1990
01/31/1990EP0353182A2 Threaded pipe connection
01/31/1990EP0353181A2 Drill pipe connection
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