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7624822 |
Thread joint
A thread joint for transmitting percussive forces includes a male thread on a male member and a female thread on a female member. The male member includes a first portion including an outer surface...
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7621570 |
Pre-expanded connector for expandable downhole tubulars
A method and apparatus for providing an expandable threaded connection between segments of expandable tubulars. Threaded connections are machined into pre-expanded ends of tubulars. Once the...
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7610667 |
Method of connecting expandable tubulars
A method and apparatus for providing an expandable threaded connection between segments of expandable tubulars. Threaded connections are machined into pre-expanded ends of tubulars. Once the...
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7594544 |
Downhole tubular sealing system
Disclosed herein is a downhole disconnectable and length compensatable tubular sealing system. The system includes, a seal connector having a first metal seal receptive of a separate seal nipple...
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7588270 |
Threaded tubular joint comprising sealing surfaces
A tubular joint for hydrocarbon wells including a male tubular element and a female tubular element including respective sealing faces configured to come into mutual sealing-tight contact after...
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7588269 |
Z-shaped thread form for tubular connections
A thread form is shown which is used to make a threaded pipe connection capable of being screwed together and subsequently unscrewed. A pin is provided having external threads with stab flanks and...
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7585002 |
Expandable tubular connection
An expandable tubular pin and box connection is described having a feature of trapping the pin nose after preferably deforming the pin nose plastically in an outward direction away from the...
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7581766 |
Reinforced tubular joint for improved sealing-tightness after plastic expansion
The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element ( 11 ) and a second, female tubular element ( 12 ) made up together by screwing. One of...
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7575255 |
Wedge thread with high-angle metal seal
A threaded connection includes a pin member providing a single external thread comprising a first external portion and a second external portion, a box member providing a single internal thread...
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7571936 |
Screw connection element and protective sleeve therefor
A screw connection element having an outer threaded portion and a sealing means ( 19 ) which is disposed in the threads thereof is described. According to the invention, the screw connection...
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7559582 |
Tubing connection arrangement
A tubing connection arrangement and a method used for coupling expandable tubing sections together. In one embodiment, there is disclosed a tubing connection arrangement comprising a first...
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7549682 |
Threaded pipe connector
A riser connector uses a box and upset pin connector threadform design having S-shaped load flanks that provide a variable load angles depending on the radial position along the engaged teeth. This...
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7527304 |
Floating wedge thread for tubular connection
A tubular connection is provided with a first thread on a first step having an initial makeup location and a second thread on a second step, the second thread being a wedge thread and having a...
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7513534 |
Fatigue-resistant threaded component for a tubular threaded joint
A fatigue-resistant threaded element for a threaded tubular connection. A portion of threads of the threaded element have a helical groove opening into the threaded crest. A groove is formed in all...
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7510219 |
Threaded connection for oil field applications
An interconnection for oil field tubular goods operates in a self sealing manner in response to internal pressures which might otherwise cause leakage through couplings or joints. Each coupling...
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7506900 |
Threaded joint for pipes provided with seal
A threaded joint for pipes comprising at least one seal of the metal-metal interference type arranged externally to the female thread. The joint has an extension of the box beyond the seal which...
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7500698 |
Pseudo two-step connection
A threaded connection includes a pin member including a continuous external wedge thread having a first pin step, a mid pin step, and a second pin step and a box member including a continuous...
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7497481 |
Treating method and design method for tubular connections
A method of treating a threaded connection that includes determining a treating time sufficient to form a thickness of a hopeite coating, coating at least a portion of the threaded connection with...
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7494159 |
Threaded joint for steel pipes
In a threaded joint for steel pipes which are connected by threaded engagement of a pin member having a tapered male thread, a metal seal-forming portion, and a torque shoulder-forming portion on...
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7478844 |
Pre-expanded connector for expandable downhole tubulars
A method and apparatus for providing an expandable threaded connection between segments of expandable tubulars. Threaded connections are machined into pre-expanded ends of tubulars. Once the...
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7478842 |
Coupled connection with an externally supported pin nose seal
A threaded connection includes a first tubular, a second tubular, and a coupling. The first and second tubulars include external threads, a pin nose, a pin nose surface, a pin shoulder surface, and...
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7475917 |
Threaded connection with variable flank angles
A threaded connection for a conduit includes a pin member and a box member. The pin member includes a pin thread having a pin thread crest, a pin thread root, a pin load flank oriented at a pin...
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7472927 |
Tubular member having an anti-galling coating
A tubular member 12 having an internal and/or external metal thread 18, 20 at one end thereof, at least part of the thread 18, 20 being coated with an alloy of copper and tin, said alloy...
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7470383 |
Submersible pump drop pipe and casing assembly connection and method of manufacture
A submersible pump drop pipe and casing assembly and method of manufacture is disclosed. The drop pipe/casing has a seated connector and base. The seated connector has a first and second cylinder...
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7458616 |
Threads with perturbations
A threaded connection including a pin member and a box member, and methods for manufacturing and forming said threaded connection. The pin member has a pin thread with a pin thread crest, a pin...
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7455329 |
Fast make-up fatigue resistant rotary shouldered connection
A thread form having improved strength and fatigue resistance. The root of the thread may be cut on multiple cutting radii having displaced centers. At least two of the root surfaces formed by...
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7452007 |
Hybrid threaded connection for expandable tubulars
An expandable threaded connection between segments of expandable tubulars. The present invention utilizes two complementary thread segments. The first segment of the threaded connection utilizes...
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7438329 |
Methods and connections for coupled pipe
A threaded and coupled connector with tapered threads having equivalent heights (same height on pin and box threads), negative load flanks, biased tapered thread forms with a torque shoulder formed...
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7434848 |
Threaded tubular connection having interlocking tubular end structures
A tubular connection having a first joint having outer threads and an inner bore, and a second joint having outer threads and an inner bore. The tubular connection further includes an outer nut...
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7431347 |
Hollow sucker rod connection with second torque shoulder
An elongated drive string assembly comprising a plurality of hollow sucker rods and connecting elements with an axis, connected together and between a drive head located at the surface of an oil...
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7387319 |
Coupling for anchor bolts
A coupling for anchor bolts, includes a sleeve having an internal screw thread and two anchor pipes having an external screw thread, the ends of the pipes being screwed into the sleeve. The sleeve...
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7384075 |
Threaded joint for gas turbine components
An assembly including inner and outer overlapping annular elements with interengaging threads. An axial abutment between the two elements is spaced from the threaded section to permit a structural...
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7380839 |
Sealing expandable tubing
Expandable tubing and methods seal a connection between expandable tubulars, and in particular, seal a connection between expandable tubulars post-expansion. In one embodiment, a method includes...
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7364203 |
Reinforcement for arched type structure with beveled screwed ends
An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an...
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7360798 |
Threaded joint for steel pipes
A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided...
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7360797 |
Coupling assembly and method
The liner assembly ( 10 ) is for use in a joint between two pipe segments. The assembly ( 10 ) includes a first ring member ( 50 ), a second ring member ( 60 ) and a corrosion barrier ring ( 70 )....
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7360796 |
Electrical isolation connector subassembly for use in directional drilling
An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an...
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7347459 |
Coupling for drilling-with-casing operations
A modified API Buttress threaded casing connection is disclosed for use in drilling oil and gas wells in lieu of using conventional drill pipe. The coupling threads only are multiple tapered yet...
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7334821 |
Premium threaded tubular joint comprising at least a threaded element with end lip
A premium threaded tubular connection including, on at least one threaded element, a distal abutment surface at the free end of a threaded element, and a lip sealing surface at a given distance...
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7255374 |
Threaded tube joint
A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface ( 11 ) placed at its end near the thread and engages, for sealing, a corresponding...
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7237810 |
Plastic pipe adhesive joint
A method of joining two pipe ends, by forming male threads on an end of a first pipe with a steep taper angle, forming matching female threads on an end of a second pipe, and applying adhesive...
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7210710 |
Drill stem connection
A double shoulder drill stem connection for high torque applications includes a thread taper within a range between about 1.0 and 1.2 inch per foot. The thread form is characterized by a stab angle...
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7207603 |
Insulated tubular assembly
A tubular assembly 10 is disclosed for passing fluids within a hydrocarbon recovery well. The tubular assembly 10 has an insulated connection 12 between insulated tubing segments 14, 16 ....
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7178391 |
Insertion tube methods and apparatus
A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string...
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7150479 |
Modular thread connection with high fatigue resistance
A connector for oilfield applications has high resistance against cyclical bending stress and fatigue failure. In a preferred embodiment, the threaded connector has a pin-box arrangement for...
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7125053 |
Pre-expanded connector for expandable downhole tubulars
A method and apparatus for providing an expandable threaded connection between segments of expandable tubulars. Threaded connections are machined into pre-expanded ends of tubulars. Once the...
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7114751 |
Composite liner for oilfield tubular goods
A composite lined tube is disclosed having end couplings. The tube includes a resin impregnated fiber preform pressed progressively along an inner wall of the tube. The tube may further include an...
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7108063 |
Connectable rod system for driving downhole pumps for oil field installations
Improved sucker rod joints for down hole petroleum pumping applications are provided within the form factor of standard API sucker rods, such that existing inventory in suitable condition is fully...
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7093654 |
Downhole component with a pressure equalization passageway
The present invention includes a downhole component adapted for transmitting downhole data. The downhole component includes a threaded end on a downhole component. The threaded end furthermore...
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7086669 |
Method and apparatus for sealing radially expanded joints
Connectors and connections that enhance mechanical and sealing engagement between the ends of tubular bodies that are radially expanded by a forging tool. The connectors are designed to maintain or...
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