Boring or penetrating the earth – With below-ground tool drive prime mover – Below-ground storage of motivating energy
Patent
1998-07-29
2000-06-13
Will, Thomas B.
Boring or penetrating the earth
With below-ground tool drive prime mover
Below-ground storage of motivating energy
175106, E21B 400
Patent
active
060737085
ABSTRACT:
A mud pressure intensifier works with existing conventional drill strings without requiring special equipment or drilling fluids. The intensifier is self-contained and is located in the drill string between the drill bit and the rest of the string. The rotational power generated by a conventional mud motor is converted into reciprocal action to reciprocate a piston. The piston elevates the pressure of a portion of the mud on both the upstroke and the downstroke before discharging the pressurized mud at the drill bit.
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patent: 5246080 (1993-09-01), Horvei et al.
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patent: 5375671 (1994-12-01), Horvei
patent: 5662180 (1997-09-01), Coffman et al.
patent: 5787998 (1998-08-01), O'Hanlon et al.
patent: 5941325 (1999-08-01), Baekken et al.
Brown John F.
Vandergrift Gary W.
Dynamo Drilling Services Inc.
Petravick Meredith C
Will Thomas B.
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