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8137051 |
System and method for facilitating well construction
A technique is provided to limit the number of vehicles required during a well project involving a plurality of well construction related procedures. The technique utilizes a modular unit, e.g. a...
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8006769 |
Shearing tool and methods of use
A shearing tool for shearing, trimming, or reducing objects being pulled through a drill string and methods for retrieving retrievable tools with fins from the drill string, where the retrievable...
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7942199 |
Method for installing wellbore string devices
A method for securing a wellbore string device to a wellbore liner tubular employs a swelling elastomer to frictionally grip a gap between the wellbore string device and the liner tubular. The...
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7900708 |
Multiple-block downhole anchors and anchor assemblies
Multiple-block downhole anchors and anchor assemblies are provided. A downhole anchor assembly for a tubing string includes an anchor block, a drag block, a biasing arrangement, and a mandrel to be...
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RE42030 |
Critical velocity reduction in a gas well
Disclosed herein is a system for enhancing the recovery of gas in a perforated interval of a gas well. The system features a tubing string having a dead string attached for reducing the flow area...
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7779911 |
Method and means for providing time delay in downhole well operations
The present invention relates to an apparatus and method for providing hydraulic load compensated time delay in downhole well operations. The apparatus includes a piston stem enclosed by a piston...
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7748447 |
Torque anchor and method for using same
A torque anchor for use with progressive cavity pumps (PC Pumps) for preventing rotation of the PC Pumps and any related tool string within a well bore, possessing a connector constructed and...
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7530400 |
Downhole tool for selectively catching balls in a well bore
A ball catcher for selectively catching and retaining drop balls in a well bore. The catcher is located on a workstring. A main bore (18) axially through the catcher is restrained to provide first...
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7455114 |
Snorkel device for flow control
The present invention provides for the operation of a downhole flow control device using a snorkel tube.
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7455106 |
Polymer protective coated polymeric components for oilfield applications
An oilfield element or assembly having a polymeric substrate protected by a polymeric coating adhered to at least a portion of the polymeric substrate. The coating includes a polymer having the...
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7431535 |
Clamp for anchoring production tube, electrohydraulic hose and electric cable simultaneously
A clamp is disclosed for use in deep sea oil exploration operations. The clamp includes a pre-formed metallic belt (12) to which a first rigid metallic curve (13) is welded. The rigid metallic...
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7431080 |
Anchor device to relieve tension from the rope socket prior to perforating a well
An anchoring sub used in combination with hydrocarbon exploration and production tools, such as perforating guns and logging devices, within a wellbore. The anchor sub is reversible and includes a...
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7409998 |
Critical velocity reduction in a gas well
Disclosed herein is a system for enhancing the recovery of gas in a perforated interval of a gas well. The system features a tubing string having a dead string attached for reducing the flow area...
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7337843 |
Solar blackbody waveguide for solar assisted oil recovery applications
A method to enhance oil shale, oil sand, asphaltic crude oil, or other high viscosity crude oil production by using a solar blackbody waveguide to heat these formations in situ. A parabolic mirror...
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7219728 |
Method and apparatus for generating downhole power
A system that is usable with a subterranean well includes a first tubular member that is adapted to receive a flow of a first fluid. The system includes a second tubular member that is located in...
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7090024 |
Tubing anchor
A method of anchoring tubing in a bore comprising: providing tubing having a section with outer surface portions defining a tubing profile, and configured to describe an outer diameter less than a...
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7000693 |
Control of hydrocarbon wells
An apparatus controls the operation of a hydrocarbon production well. The apparatus includes a supply means for providing an electric power supply. The apparatus also includes a plurality of...
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6968897 |
Anti-rotation tool
A tool is provided for preventing the rotation of a downhole tool or rotary pump stator, the tool comprising a tubular housing and a jaw which is biased radially outwardly from the tool to engage...
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6966366 |
Plunger enhanced chamber lift for well installations
The present invention is addressed to a method of retro-fitting a well installation to reconfigure it to provide plunger enhanced chamber lift. The method comprises the steps of providing a...
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RE38866 |
Pressure-boost device for downhole tools
A pressure-boosting apparatus particularly amenable for use in downhole applications is disclosed. The pressure-boosting apparatus employs an unbalanced piston which is initially fixated in a...
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6935423 |
Borehole retention device
A borehole retention assembly for anchoring a well tool within a wellbore including a gripping assembly and an actuation assembly. The gripping assembly includes expandable members such that upon...
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6698516 |
Method for magnetizing wellbore tubulars
In the method of providing for well tubular member magnetization, the steps include providing a magnetizing structure comprising an electrical coil defining an axis, relatively displacing the...
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6675888 |
Method and system for moving equipment into and through an underground well
A method and system are disclosed for moving equipment into and through a conduit that is preferably an oil and/or gas production well, wherein use is made of an uphole equipment storage and...
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6619392 |
Blast joint assembly
Blast joint assemblies are used for integral prevention of erosion of a production string crossing a production zone and simultaneous protection of hydraulic, electric and/or optical lines which...
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6491116 |
Frac plug with caged ball
A downhole tool for sealing a wellbore. The downhole tool includes a packer with a ball seat defined therein. A sealing ball is carried with the packer into the well. The movement of the sealing...
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6454000 |
Cavity well positioning system and method
A subterranean cavity positioning system includes a down-hole device and a cavity positioning device rotatably coupled to a well portion of the down-hole device. The cavity positioning device...
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6454012 |
Tool string shock absorber
An apparatus and method for absorbing shock downhole in a wellbore. The kinetic energy from a moving tool is absorbed to dissipate such energy, to decelerate the moving tool, or to prevent impact...
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6378608 |
Apparatus and method for separating oil, water and solids
An apparatus for separating water from an oil mixture extracted from a well that is adapted to be positioned downhole and that includes a hydrocyclone (6), an electrostatic coalescence unit (8), a...
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6325145 |
Pressure pulse attenuator
A downhole in-line tubular accumulator for the attenuation of pressure pulses generated by operation of a downhole vibratory apparatus in an oil or gas well. An inner tube is positioned within a...
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6318462 |
Downhole anti-rotation tool
A tool is provided for preventing the rotation of a downhole tool or rotary pump stator, the tool comprising a tubular housing and a jaw which pivots radially outwardly from the tool upon tool...
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6293340 |
Gas-lift-ball control device and oil producing method using said device
This invention relates to a gas-lift ball control device in gas-lift ball oil recovery and a method of oil recovery with the device. In the device a low pressure gas outlet, an oil-gas-ball inlet...
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6273189 |
Downhole tractor
A downhole tractor is provided that includes a housing and a first wheel assembly coupled to the housing that is operable to translate away from the housing in a first direction. The first wheel...
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6216779 |
Downhole tool actuator
An apparatus for orienting a downhole tool relative to a borehole. The invention comprises a phase change material such as a shape memory metal engaged with the tool in an initial position which is...
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6199632 |
Selectively locking locator
A locator device (50) that is selectively lockable within a nipple profile (40) disposed within a wellbore (32). The locator device (50) comprises a locator key (106) disposed between a housing...
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6155346 |
Downhole anchor
A downhole anchor for preventing rotational movement of a member within a well has a central tubular member, a slip housing and a drag assembly disposed about the tubular member. The slip housing...
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6062309 |
Torque roller anchor
A mandrel-operated torque roller anchor for insertion into the casing of a well, which when set resists axial movement and prevents rotation of itself and the string above it in one direction, but...
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5881824 |
Bottomhole assembly orienting sub
A mechanism for arients and maintains a key in a sub for guiding directional measurement equipment of a directional drilling assembly with respect to the drillbit. The orienting sub has an outer...
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5860476 |
Method and apparatus for separating a well stream
Hydrocarbons are recovered from a sub-surface reservoir whereby a production flow is subjected to a separation process in the well hole. Gas and liquid are separated from each other using a cyclone...
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5829528 |
Ignition suppression system for down hole antennas
The invention provides an apparatus and a method for suppressing ignition of flammable materials in a borehole. The apparatus may include a down hole device having an upper end and a lower end,...
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5711374 |
Method for cyclone separation of oil and water and an apparatus for separating of oil and water
The invention describes the separation of oil and water in a production flow from a hydrocarbon reservoir, said separation being carried out by the use of one cyclone or a plurality of cyclones...
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5636690 |
Torque anchor
A torque anchor for the purpose of anchoring well equipment within a well conduit. The device anchors the well equipment from rotation in one direction but allows rotation in the other. The device...
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5549333 |
Blast joint
A blast joint for protecting production tubing passing through a producing zone including one or more tubing joints of sufficient length to extend through the producing zone, erosion resistant...
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5524708 |
Non-metallic oil well tubing system
A simple, efficient apparatus for deploying non-metallic tubing in an oil and gas well comprising a suspension system including one or more continuous support members attached to at least one...
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5518076 |
Grease applicator for a drill shaft
A grease applicator for the threaded joint section of a drill shaft of a blasthole drill. The grease applicator has a grease applicator head movable to an application position adjacent the threaded...
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5382056 |
Riser weak link
A riser string connecting a floating vessel to a subsea well has a weak link coupling which will part the riser string once a minimum force is reached. The weak link coupling has a release...
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5314209 |
Blast joint for snubbing unit
A blast joint for use with a snubbing unit includes a casing around the protective rings and means for sealing around the bottom of the rings between the tubing and the casing.
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5275441 |
Blast joint with torque transferring connector
A blast joint resistant to erosion including an inner pipe joint having a substantially smooth outer surface and an upper end and a lower end. A cylindrical lower assembly having an exterior...
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5211229 |
Washpipe support clamp
An apparatus to support washpipes has a pair of substantially mirror image components which, when clamped together about an inner string, define an annual chamber for receiving and supporting the...
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RE34017 |
Increased tensile strength variable diameter protective joint
There is provided a protective joint for production tubing having a body portion and an increased diameter portion within a zone to be protected and including a transition ring formation and a...
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5110644 |
Composition material tube substantially insensitive to the variations of length under the effect of the internal pressure
A composite material tube, substantially insensitive to the variations of elongation under the effect of the internal pressure, comprising a number n of stable layers of reinforcement fibers, the...
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