Patents by Inventor Ronald E. Pringle
Ronald E. Pringle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5423383Abstract: A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.Type: GrantFiled: September 6, 1994Date of Patent: June 13, 1995Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 5411081Abstract: A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.Type: GrantFiled: July 21, 1994Date of Patent: May 2, 1995Assignee: Camco International Inc.Inventors: Brian K. Moore, Ronald E. Pringle
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Patent number: 5411085Abstract: A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.Type: GrantFiled: November 1, 1993Date of Patent: May 2, 1995Assignee: Camco International Inc.Inventors: Brian K. Moore, Ronald E. Pringle
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Patent number: 5394951Abstract: A bottom hole drilling assembly connectable to coiled tubing comprises a downhole motor to rotate a drill bit, articulated sub for causing the drill bit to drill a curved bore hole when a second portion thereof is bent from coaxial orientation with a first portion, steering tool for indicating the attitude of the bore hole, thruster for providing force to advance the drill bit, and orientating tool for rotating the thruster relative to the coiled tubing to control the path of the bore hole.Type: GrantFiled: December 13, 1993Date of Patent: March 7, 1995Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris, Brian K. Moore
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Patent number: 5373898Abstract: A well tool having an elongate circular body with an enclosed fluid bore extending longitudinally therethrough. A fixed plate extends radially between the bore and the body and a rotatable piston extends between the enclosed bore and the body and is rotatable about the enclosed bore. A hydraulic control line extends longitudinally to a position between the plate and the piston for rotating the piston. The tool may be an orientation tool and include a rotatable mandrel actuated by the piston. A recocking spring is provided recocking the piston and valve means are provided in the hydraulic line for admitting and venting fluid from the piston.Type: GrantFiled: October 25, 1993Date of Patent: December 20, 1994Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 5316094Abstract: An orientation mandrel rotatable in an orientation body for providing rotational orientation and actuated by a hydraulic piston controlling the position of a helix. A thruster may be connected to the orientation mandrel and is adapted to hydraulically engage the well bore by plurality of elongate gripping bars. An annular thruster piston is hydraulically and longitudinally movable in the thruster body for extending the thruster mandrel outwardly from the thruster body. However, the orientating tool and thruster may be used separately.Type: GrantFiled: October 20, 1992Date of Patent: May 31, 1994Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 5314032Abstract: A movable joint bent sub for attachment to a well conduit for use in deviated drilling of a well. An elongated housing is provided having one end for attachment to a well conduit, a mandrel is telescopically movable in the bore of the housing, and a movable body is pivotally connected to the mandrel and is longitudinally movable in the housing. Coacting cam surfaces on the body in the housing pivot the body to a desired deviation when the mandrel is telescopically moved in the bore. A releasable lock may be provided between the mandrel and the housing.Type: GrantFiled: May 17, 1993Date of Patent: May 24, 1994Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5311939Abstract: A well packer for engaging and sealing against the inside of a conduit having a mandrel, friction blocks, slips, and a packer seal. The friction blocks are supported by the mandrel and positioned parallel to the slips providing a short inexpensive packer. The packer can be quickly and easily converted to be either a mechanical set bi-directional packer, a compression set well packer, or a tension set packer.Type: GrantFiled: July 16, 1992Date of Patent: May 17, 1994Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5285851Abstract: A flexible subsurface well safety valve for installation in the interior of a coiled tubing. A coiled tubing member is connected in a coiled tubing and a safety valve, which is flexible for allowing bending about its longitudinal axis, is positioned in the bore of the tubular member. The valve has sufficient flexibility to coil around a coiled tubing reel. The safety valve includes a housing with a hydraulic piston and cylinder assembly coaxially positioned above the housing and a biasing spring coaxially positioned above the housing and connected to the hydraulic means.Type: GrantFiled: August 12, 1992Date of Patent: February 15, 1994Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 5257663Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.Type: GrantFiled: September 29, 1992Date of Patent: November 2, 1993Assignee: Camco Internationa Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5236047Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.Type: GrantFiled: October 7, 1991Date of Patent: August 17, 1993Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5230383Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.Type: GrantFiled: September 29, 1992Date of Patent: July 27, 1993Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5226491Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.Type: GrantFiled: September 29, 1992Date of Patent: July 13, 1993Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5207272Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.Type: GrantFiled: September 29, 1992Date of Patent: May 4, 1993Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 5170815Abstract: A gas lift assembly for installation in the interior of coiled tubing for providing gas lift to oil and gas wells. A housing assembly for receiving a gas lift valve is adapted to be connected in a coiled tubing and includes a tubular member having a bore with a holding shoulder in the bore of the tubing for holding a gas lift valve and a port. Preferably at least one passage way is provided for allowing fluids to pass when the gas lift valve is positioned in the bore. The gas lift valve may be of various geometries and materials for allowing the gas lift valve to be run into the well with the coiled tubing.Type: GrantFiled: February 24, 1992Date of Patent: December 15, 1992Assignee: Camo International Inc.Inventors: Walter S. Going, III, Ronald E. Pringle
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Patent number: 5058682Abstract: A subsurface well safety valve for controlling the fluid flow through a well conduit which includes an equalizing line and an equalizing valve in the line. The equalizing line includes a passageway through the interior of the power spring which biases the safety valve to the closed position thereby routing the equalizing line through a simpler and less expensive structure. The equalizing valve is connected to the safety valve flow tube and is movable to a closed position in response to the power spring and is movable to an open position in response to the actuating piston and cylinder assembly.Type: GrantFiled: August 29, 1990Date of Patent: October 22, 1991Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 4997043Abstract: A landing nipple for use in a well tubing for receiving a well tool. A magnetic armature is utilized in the nipple actuated by a magnet or solenoid coil for extending retractable no-go shoulders and/or locking dogs into the bore of the nipple for coacting with a well tool.Type: GrantFiled: May 4, 1990Date of Patent: March 5, 1991Assignee: Camco International Inc.Inventor: Ronald E. Pringle
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Patent number: 4986357Abstract: A subsurface well tool having a hydraulic piston and cylinder assembly actuator which is adapted to be connected to and controlled by a hydraulic control line extending to the well surface. The assembly has a cross-sectional area exposed to the hydraulic control fluid which increases in one direction of movement of the assembly and decreases in the opposite direction for reducing surface operating pressure problems. Preferably, one of the piston and cylinder includes a tapered surface, and includes a flexible seal between the piston and cylinder.Type: GrantFiled: April 9, 1990Date of Patent: January 22, 1991Inventor: Ronald E. Pringle
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Patent number: 4983803Abstract: A subsurface safety valve is made by the steps of coating a hard seat in the inside surface of a circular tubular member, honing the inside of the tubular member, drilling a hole in a circular plane perpendicular to the axis of the tubular member to form hinge holes in the future cut out valve closure members, and then cutting hinges out of circular sectors of the tubular member. Preferably the cutting is performed using a wire electrode of a wire cutting electric discharge machine, although cutting may be performed by a mill or a chemical machine.Type: GrantFiled: December 11, 1989Date of Patent: January 8, 1991Assignee: Camco International Inc.Inventors: Ronald E. Pringle, Arthur J. Morris
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Patent number: 4977957Abstract: A subsurface well safety valve having a housing with a valve seat positioned in the housing and a valve closure member movable between open and closed positions. A flow tube is telescopically movable in the housing for controlling the movement of the valve closure member, a biasing member in the housing acts on the flow tube moving the valve to a closed position, and a hydraulic piston and cylinder assembly actuates the flow tube. The flow tube and/or the valve closure member are made of a light weight material, and allow the use of smaller and less expensive springs. The low weight flow tube reduces the required output of the biasing member and/or allows the valve to be set deeper.Type: GrantFiled: October 2, 1989Date of Patent: December 18, 1990Assignee: Camco International Inc.Inventor: Ronald E. Pringle