Wells – Processes – Cementing – plugging or consolidating
Patent
1996-06-20
1998-11-10
Dang, Hoang C.
Wells
Processes
Cementing, plugging or consolidating
166 70, 166 7515, 1661774, 166379, E21B 2305, E21B 3316
Patent
active
058330020
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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Baker Service Tools information on Model TD Plug Dropping Head, May 1990, 5pgs.
Baker Hughes Incorporated
Dang Hoang C.
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