Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7347273 | Bottom hold completion system for an intermittent plunger A bottom hole assembly for an intermittent lift plunger system includes a retrievable downhole anchor which may be set and reset in one downhole trip, a retrievable packing device, and a plunger stop. ... | 03/25/2008 |
| 7337852 | Run-in and retrieval device for a downhole tool A run-in and retrieval device for a downhole tool comprises a first set of lugs disposed on a first component of the device connected to a tool string, and a second set of lugs disposed on a second component of the device connected to the downhole tool, wherein the ... | 03/04/2008 |
| 7281584 | Multi-cycle downhill apparatus A downhole apparatus such as multi-cycle circulating subs used during downhole drilling operations includes a piston (42) slidably mounted in a body (4) between positions in which at least one aperture (40) in the body is opened and closed. Move... | 10/16/2007 |
| 7240738 | Self-orienting selectable locating collet and method for location within a wellbore A self orienting selectable locating collet including a collet having at least one deflectable finger; an orientation key positioned at the deflectable finger and being deflectable with the finger; and a collet profile disposed at an outside dimension of the collet.... | 07/10/2007 |
| 7213655 | System for connecting downhole tools A hands-free connection system is provided for coupling downhole tools for use in well operations. The connection system includes two downhole tools connectable together in threaded engagement. The connection system further includes a compressible locking sleeve pos... | 05/08/2007 |
| 7210534 | Lock for a downhole tool with a reset feature The lock allows two members in a downhole tool to be temporarily held together. In an application where mandrel movement is dictated by pressure cycling in combination with a J-slot mechanism, such as in a downhole valve, the mandrel is releaseably retained to an ad... | 05/01/2007 |
| 7201232 | Washpipeless isolation strings and methods for isolation with object holding service tool An isolation string having an upper packer and an isolation pipe in mechanical communication with the upper packer, the isolation pipe comprises an operable valve and an object activated valve. An object holding service tool is adapted to release an object to activa... | 04/10/2007 |
| 7185704 | Service tool with flow diverter and associated method A downhole service tool is provided that may include a body having an interior passageway, at least one exit port through which fluid may flow from the interior passageway to an exterior of the tool, and at least one diverting channel adapted to cause fluid exiting ... | 03/06/2007 |
| 7124824 | Washpipeless isolation strings and methods for isolation An isolation string having: an upper packer; and an isolation pipe in mechanical communication with the upper packer, wherein the isolation pipe comprises a pressure activated valve and an object activated valve. A method having: running-in an isolation string on a ... | 10/24/2006 |
| 7025130 | Methods and apparatus to control downhole tools The present invention generally provides a downhole tool with an improved means of transmitting data to and from the tool through the use of wired pipe capable of transmitting a signal and/or power between the surface of the well and any components in a drill string... | 04/11/2006 |
| 7004250 | Sealing system for the interspace in the transition region between two well pipes of different diameters, and mounting tool for this A sealing system for the interspace in the transition region between two well pipes of different diameters, and a mounting tool for producing the sealing connection. The mounting tool is lowered via a drilling string through a larger diameter pipe and, with a sealin... | 02/28/2006 |
| 7004266 | Adjustable downhole tool An adjustable down-hole tool, for example a drill-string stabiliser (10), comprises a body (12) having a through bore (16). A mandrel (18) is rotationally fixed but axially movable in the body, the mandrel being movable by fluid pressure ... | 02/28/2006 |
| 6948561 | Indexing apparatus An indexing mechanism is disclosed that can put a tool in a variety of positions while downhole in the face of high static and dynamic loads. In the preferred application, the mechanism controls a movable sleeve on a downhole choke. It contains an indexing feature c... | 09/27/2005 |
| 6926088 | Sequential release packer J tools for single trip insertion and extraction The present invention is to a pre-selected set of packer tools having J tools and on/off tools (“stingers” and “washovers”) with varying strokes and varying set and release directions to enable the operator to individually address the various packers. By inc... | 08/09/2005 |
| 6776239 | Tubing conveyed fracturing tool and method A tubing conveyed multi-position well treating tool having a tubular housing and a tubular inner member which are relatively positionable at “Set”, “Treat”, “Dump” and “Release” positions actuated by a mechanical indexing mechanism. The indexing mech... | 08/17/2004 |
| 6745836 | Down hole motor assembly and associated method for providing radial energy The down hole motor is a self-contained radial drive unit that is driven by a linear input, which can be supplied from various sources. As linear motion is applied to the input of the tool, drive pins on a drive shaft follow a helical path, converting the linear mot... | 06/08/2004 |
| 6708785 | Fluid controlled adjustable down-hole tool An adjustable down-hole tool, for example a drill-string stabiliser (10), comprises a body (12) having a through bore (16). A mandrel (18) is rotationally fixed but axially movable in the body, the mandrel being movable by fluid pressure ... | 03/23/2004 |
| 6668936 | Hydraulic control system for downhole tools A hydraulic control system and associated methods provides selective control of operation of multiple well tool assemblies. In a described embodiment, a hydraulic control system includes a control module which has a member that is displaceable to multiple... | 12/30/2003 |
| 6510898 | Positioning assembly A system is disclosed for positioning downhole tools in a borehole such as a cased or lined oilwell, wherein the system is adapted to control the vertical and rotational position of the tool within the borehole. The system uses a plurality of guide slots ... | 01/28/2003 |
| 6308783 | Wellbore flow control device A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at least one flow port, and a first valve seat; a sleeve member movably disposed within the central bore of the b... | 10/30/2001 |
| 6286599 | Method and apparatus for lateral casing window cutting using hydrajetting A method and apparatus using hydrajetting of fluid to cut a lateral casing window for drilling a side track. The apparatus comprises a J-sub having a J-slot therein which guides movement of a jetting nozzle such that a window may be abrasively jetted in w... | 09/11/2001 |
| 6241015 | Apparatus for remote control of wellbore fluid flow An apparatus for remotely controlling fluids in a well is provided. The flow control apparatus may include a body member having a flow port in an outer wall of the body member, and a flow aperture spaced inwardly from the outer wall. A remotely shiftable ... | 06/05/2001 |
| 6237683 | Wellbore flow control device A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at least one flow port, and a first valve seat; a sleeve member movably disposed within the central bore of the b... | 05/29/2001 |
| 6230807 | Valve operating mechanism Apparatus and method for operating a valve positioned in a wellbore. The apparatus includes a tubing having a bore and a piston operably coupled to the valve. The piston is moveable from a first position to the second position by predetermined pressure ap... | 05/15/2001 |
| 6220357 | Downhole flow control tool A downhole tool having selectively openable ports therein, the tool being actuable between a closed configuration in which the ports are closed, a primed configuration in which the ports are primed for opening, and an open configuration in which the ports... | 04/24/2001 |
| 6109354 | Circulating valve responsive to fluid flow rate therethrough and associated methods of servicing a well A circulating valve and associated methods of servicing a well provide reliable operation, economical manufacture, and convenient maintenance in the circulating valve which is responsive to flow of fluid therethrough, and increased versatility in well ser... | 08/29/2000 |
| 6082453 | Orientation device, particularly for drilling tool or a well equipment An orientation device, particularly for drilling tools, of the kind comprising a first sleeve (1) and a concentrically surrounding second sleeve (2), where in an annulus between the sleeve (1) and the sleeve (2) is disposed an axially displaceable carrier... | 07/04/2000 |
| 6053244 | Release mechanism A tool can be released from a tool string in a wellbore by setting the tool and applying reverse torque to the tool string for an extended period. The release mechanism (200) comprises a latch (250) including a plurality of collects (253) which are held i... | 04/25/2000 |
| 6050341 | Downhole running tool A downhole running tool (10) for use in positioning an item, such as a length of tubing (12) , in a bore comprises a body (11, 22) defining a fluid passage, an arrangement (20, 30) for creating a flow restriction, to create an increase in fluid pressure i... | 04/18/2000 |
| 5542476 | Apparatus for drilling and maintenance of holes in a golf course The invention relates to an apparatus for drilling an maintaining holes in golf courses. It is built onto a mini-tractor with the drilling unit itself suspended in a hydraulic hoist for moving up and down between a raised and a lowered position. The drill... | 08/06/1996 |
| 5529126 | Valve control apparatus After the drilling of an oil well bore there is normally carried out testing using a test tool string. Following completion of the test, the test tools must be shut down, and the test string removed. It is an advantage if the string incorporate some means... | 06/25/1996 |
| 5518073 | Mechanical lockout for pressure responsive downhole tool An improved mechanical system selectively locks the tester valve of an annulus pressure responsive tester valve in position for an indeterminate number of well annulus pressure cycles. The tester valve can be closed upon demand. The forces which accomplis... | 05/21/1996 |
| 5483987 | Remote control method and device for actuating an equipment-application to a drill string The present invention relates to a device for actuating equipment from a distance through a flow variation of a fluid in a pipe. The device and method of this invention are suited for incorporation into a drill string.... | 01/16/1996 |
| 5472055 | Liner hanger setting tool A self-contained, telescoping liner hanger setting tool is adapted to set a hanger and attached liner within a wellbore; release the liner hanger by unthreading a running nut securing the tool to the hanger and rotating the liner, after the tool is releas... | 12/05/1995 |
| 5337827 | Pressure-controlled well tester adapted to be selectively retained in a predetermined operating position In the present invention a testing tool having an axial flow passage is arranged to be connected in a pipe string and placed in a well bore. Communication through the flow passage is controlled by a valve member which is cooperatively arranged in the body... | 08/16/1994 |
| 5327975 | Tubing anchor catcher with rotating mandrel A cased wellbore extends downhole to a pay zone which is produced by a rod actuated downhole pump that lifts fluid from the bottom of the wellbore up through a tubing string to a wellhead. The pump is seated in a pump cavity, and the tubing string is tens... | 07/12/1994 |
| 5325917 | Short stroke casing valve with positioning and jetting tools therefor A short stroke casing valve with positioning and jetting tools therefor. The casing valve has a sliding sleeve within a housing. The housing defines a housing communication port therethrough, and a seal is disposed on longitudinally opposite sides of the ... | 07/05/1994 |
| 5311939 | Multiple use well packer 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.... | 05/17/1994 |
| 5310001 | Method of retrieving a downhole tool utilizing non-rotational workstrings An apparatus for retrieving downhole devices is disclosed. The apparatus of the present invention includes a retrieving device that can be run on non-conventional workstrings such as coiled tubing, wireline, or electric line. The apparatus comprises a pow... | 05/10/1994 |
| 5285850 | Well completion system for oil and gas wells A well completion system and method in which reeled tubing is connected in the completion string which includes a safety valve and a sliding sleeve valve. A straddle assembly is provided within the sliding sleeve valve for sealing against axial flow of fl... | 02/15/1994 |
