US Patent No: 5,856,790
Number of patents in Portfolio can not be more than 2000
Remote control for a plug-dropping head
Stats
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Jan 5, 1999
Issued date -
May 10, 1996
filing date -
08/644,889
serial no -
In Force
status
Importance
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Abstract
An apparatus and method of dropping a pumpdown plug or ball is revealed. The assembly can be integrally formed with a plug-dropping head or can be an auxiliary feature that is mounted to a plug-dropping head. The release mechanism is actuated by remote control, employing intrinsically safe circuitry. The circuitry, along with its self-contained power source, actuates a primary control member responsive to an input signal so as to allow component shifting for release of the pumpdown plug or ball. Multiple plug-dropping heads can be stacked, each responsive to a discrete release signal. Actuation to drop the pumpdown ball or plug is accomplished even while the components are rotating or are moving longitudinally. Using the apparatus and method of the present invention, personnel do not need to climb up in the derrick to actuate manual valves. There is additionally no need for a rig floor-mounted control panel with hydraulic lines extending from the control panel to remotely located valves for plug or ball release.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,671,353 Apparatus for releasing a cementing plug | 39 | 1986 | |
| 5,040,603 Sequential remote control plug release system | 17 | 1990 | |
| 5,293,933 Swivel cementing head with manifold assembly having remote control valves and plug release plungers | 42 | 1992 | |
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| 4,721,158 Fluid injection control system | 29 | 1986 | |
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| 5,435,390 Remote control for a plug-dropping head | 54 | 1993 | |
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| 4,317,486 Cementing head apparatus and method of operation | 29 | 1980 | |
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| 4,468,762 Telemetry equipment in modules | 33 | 1981 | |
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| 4,782,894 Cementing plug container with remote control system | 34 | 1987 | |
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| 4,924,482 Data-transmitting apparatus | 11 | 1989 | |
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| 4,354,278 Laser telemetry | 9 | 1980 | |
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| 5,142,534 Wireless integrated voice-data communication system | 99 | 1990 | |
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| 5,279,305 Electroencephalograph incorporating at least one wireless link | 22 | 1992 | |
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| 4,427,065 Cementing plug container and method of use thereof | 69 | 1981 | |
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| 5,095,988 Plug injection method and apparatus | 59 | 1991 | |
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| 5,191,937 Offshore well remote control system | 33 | 1991 | |
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| 4,854,383 Manifold arrangement for use with a top drive power unit | 61 | 1988 | |
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| 5,383,044 Systems, methods and apparatus for transmitting radio frequency remote control signals | 34 | 1992 | |
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| 4,767,280 Computerized controller with service display panel for an oil well pumping motor | 46 | 1987 | |