Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Reexamination Certificate
2006-08-08
2006-08-08
Bagnell, David (Department: 3672)
Boring or penetrating the earth
With below-ground tool drive prime mover
Fluid rotary type
Reexamination Certificate
active
07086486
ABSTRACT:
A flow control valve is disclosed for controlling the rotation of a hydraulic motor, such as a turbine, a mud motor, for example, having an element that rotates in response to power fluid. The valve disclosed may include a valve housing and a valve piston, each having a port, moveable relative to one another. When the ports at least partially align, bypass flow is generated which acts to decrease the speed of rotation of the element, such as a turbine shaft. An energizer, such as a pump assembly, is further described which is adapted to move the valve housing or the valve piston in response to the speed of rotation, such that bypass flow is a function of the motor speed (i.e. speed of rotation of the element). A bottom hole assembly including a flow control valve and a method of controlling the rotation of a downhole tool are also described.
REFERENCES:
patent: 2963099 (1960-12-01), Gianelloni, Jr.
patent: 3194325 (1965-07-01), Gianelloni, Jr.
patent: 3802515 (1974-04-01), Flamand et al.
patent: 4396071 (1983-08-01), Stephens
patent: 4768598 (1988-09-01), Reinhardt
patent: 6202762 (2001-03-01), Fehr et al.
patent: 6289998 (2001-09-01), Krueger et al.
patent: 6557642 (2003-05-01), Head
patent: 6568485 (2003-05-01), Falgout, Sr.
patent: 6854953 (2005-02-01), Van Drentham-Susman et al.
patent: 6920946 (2005-07-01), Oglesby
patent: 0921268 (1999-02-01), None
patent: 2044826 (1980-10-01), None
patent: 2328464 (1999-02-01), None
SPE 60756—“Controlling Small Positive-Displacement Motors when used wit Coiled Tubing and Compressible Fluids”—Lance Portman, John Ravensbergen and Paul Salim, BJ Services, Copyright 2000, Society of Petroleum Engineers Inc.
Roto-Jet® Rotary Jetting Tool—Product Sales Bulletin; BJ Services Company Apr. 11, 2002.
Copy of “Search Report Under Sections 17 and 18(3)”, Dated Jun. 15, 2005 by the Patent Office of the United Kingdom for British Patent Application No. GB0500800.8 (3 Pages Total, Including Examiner's Cover Letter).
Brunskill Doug
Pike Don
Ravensbergen John Edward
Bagnell David
BJ Services Company
Howrey LLP
Smith Matthew J.
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