Patents
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
06/1985
06/04/1985CA1188364A1 Method of and apparatus for mining analysis
05/1985
05/28/1985US4519970 First and second tubular portions hermetically coupled
05/22/1985EP0142365A1 Protector clamp for well control lines
05/21/1985US4518888 For use in a drill string operating in a borehole
05/21/1985US4518048 Method for improved hydraulic jetting of drill bore holes using high pressure pulses of fluid
05/21/1985CA1187314A1 Tube material for sour wells of intermediate depths
05/15/1985EP0141746A2 Annular electrical contact apparatus for use in drill stem testing
05/15/1985EP0141728A2 Device for sound attenuation of drills
05/14/1985US4516917 Well pumping apparatus and method
05/14/1985US4516881 Multiterminators for riser pipes
05/14/1985US4516633 Blind shaft drilling
05/14/1985US4516608 Tubular member
05/08/1985EP0140311A1 Apparatus for reducing friction between rotating drill pipe and the well bore
05/07/1985US4515400 Wellhead assembly
05/02/1985EP0139565A1 Conical thread configuration for rapid make-up connection
05/02/1985EP0138820A1 Plant for making bore-holes in the side walls of underground exploitation chambers of small width.
04/1985
04/30/1985US4513995 Electroless nickel coating prior to tin plating
04/30/1985US4513822 Anchor seal assembly
04/30/1985US4513817 Casing bore receptacle
04/30/1985CA1186214A1 Fairing for elogated elements
04/25/1985WO1985001762A1 Buoyancy support for deep-ocean struts
04/24/1985EP0138603A2 Improvements in or relating to rods and pipes
04/23/1985US4512791 Hermetically sealed insulating assembly
04/23/1985US4512721 Titanium of zirconium getter
04/23/1985US4512692 Tool shaft for a tool of the percussive and rotative type
04/23/1985US4512596 Anti-unscrewing devices
04/23/1985US4512425 Up-drill sub for use in rotary drilling
04/23/1985US4512424 Tubular spring slip-joint and jar
04/23/1985CA1185963A1 Well tool
04/23/1985CA1185895A1 Quick release downhole motor coupling
04/16/1985US4511287 Submerged buoyant offshore drilling and production tower
04/16/1985US4511007 Locking device for a tool with telescopically displaceable parts
04/16/1985US4510797 Full-bore drill stem testing apparatus with surface pressure readout
04/16/1985US4510696 Surveying of boreholes using shortened non-magnetic collars
04/16/1985CA1185635A1 Connector assembly
04/16/1985CA1185591A1 Method and means for pulling sucker rod strings
04/16/1985CA1185521A1 Non-weld casing centralizer
04/09/1985US4509777 Weld-on casing connector
04/09/1985US4509776 Corrosion-resistant pipe coupling structures
04/09/1985US4509605 Wireline protector with improved clamping mechanism
04/09/1985US4509558 Flexible hose
04/02/1985US4508577 Fluid jet apparatus and method for cleaning tubular components
04/02/1985US4508375 Tubular connection
04/02/1985US4508182 Method and apparatus for controlling azimuthal drift of a drill bit
04/02/1985US4508167 Selective casing bore receptacle
04/02/1985US4507842 Method of sealing and protecting a plastic lined pipe joint
03/1985
03/26/1985US4506730 Device for assembling jacketed lengths of pipe base well screens
03/26/1985US4506729 Drill string sub with self closing cable port valve
03/26/1985US4506432 Method of connecting joints of drill pipe
03/26/1985CA1184585A1 Connector
03/20/1985EP0134467A2 Target-directed drilling rod for rotating boring tools with flushing duct for underground mining
03/19/1985US4506219 Borehole tool outrigger arm displacement control mechanism
03/19/1985US4505618 Marine riser protector for use on offshore oil drilling rigs in icy waters
03/19/1985US4505617 Stabilizing bluff structures against oscillation
03/19/1985US4505614 For centering a pipe in an opening in a support
03/19/1985US4505343 Plural-part earth bit, and an improved bit head therefor
03/19/1985US4505155 Borehole pressure measuring system
03/13/1985EP0134177A1 Drill rods particularly for gas or oil wells with a zone for receiving the holding slips
03/12/1985CA1183886A1 Pipe connectors
03/12/1985CA1183773A1 Oil well casing and tubing joint and production of same
03/12/1985CA1183771A1 Riser tensioner
03/05/1985US4502552 Vibratory rotary drilling tool
02/1985
02/26/1985US4501443 Fluidtight pipe joint
02/26/1985US4501440 Insulated tubing joint
02/26/1985US4501337 Apparatus for forming and using a bore hole
02/26/1985US4501330 Well completion apparatus and method
02/26/1985US4501327 Split casing block-off for gas or water in oil drilling
02/26/1985US4501058 Method of pre-stressing a structural member
02/19/1985US4500263 Electrically driven submersible pump system
02/19/1985US4500224 Coupling for sucker rod assembly
02/19/1985US4500156 Electrical connector
02/19/1985US4499924 Method of making a drill pipe wear sleeve assembly and product thereof
02/19/1985CA1182745A1 Packerless well completion assembly
02/13/1985EP0132742A1 Method and apparatus for controlling azimuthal drift of a drill bit
02/12/1985US4498548 Well jar incorporating elongate resilient vibration snubbers and mounting apparatus therefor
02/12/1985CA1182490A1 Tool joint with internal/external make-up shoulder
02/12/1985CA1182394A1 High temperature insulated casing
02/05/1985US4497866 Sucker rod
02/05/1985US4497371 Setting tool and retrievable landing assembly
02/05/1985CA1182147A1 Corrosion-resistant pipe coupling structures
02/05/1985CA1182104A1 Method and apparatus for forming and using a bore hole
02/05/1985CA1182040A1 Remotely replaceable guidepost method and apparatus
02/05/1985CA1181992A1 Wire assemblies for repetitive, continuous cycle, tensile load conditions, particularly sucker rods for oil wells
01/1985
01/30/1985EP0132423A1 Borehole logging and work-over method and apparatus
01/29/1985US4496203 Drill pipe sections
01/29/1985US4496174 Insulated drill collar gap sub assembly for a toroidal coupled telemetry system
01/29/1985US4496173 Threaded coupling
01/29/1985US4495997 Well completion system and process
01/29/1985US4495804 Method of and apparatus for mining analysis
01/29/1985CA1181680A1 Deep water riser system for offshore drilling
01/23/1985EP0131771A1 Drilling device, especially for underground mining
01/23/1985EP0131621A1 Tubular joint with trapped mid-joint metal to metal seal.
01/22/1985US4494777 Closed angle thread pipe joint
01/22/1985US4494607 Method of cleaning and inhibiting sucker rod corrosion
01/16/1985EP0131517A2 Arm mechanism supporting a borehole logging shoe
01/16/1985EP0131065A2 Method and apparatus for ultrasonic testing of tubular goods
01/15/1985US4494072 Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string
01/15/1985US4493380 Hydraulic straight hole drill collar
01/15/1985US4493372 Well completion system and process
01/15/1985CA1181002A1 Stinger assembly for oil well tool