High torque, low speed mud motor for use in drilling oil and gas wells
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 18, 2000
Grant Date -
N/A
app pub date -
Feb 12, 1998
filing date -
Feb 12, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A improved 'mud motor' for use in oil and gas well drilling includes a reciprocating valve and piston arrangement that generates power using drilling fluid media (e.g., drilling mud) pumped through an inlet port to form a differential across a piston seat. The differential pressure causes the valve and piston assembly to move down in an elongated body. Rollers then force telescoping, reciprocating fingers to rotate while absorbing the reciprocating up and down action of the valve and piston assembly. This clockwise rotation causes a transmission that includes a clutch shaft and sprags to engage a clutch housing causing the drill bit to turn. Thrust bearings allow weight to be applied to the tool to optimize drilling action. The apparatus can be used in well drilling or in the removal of obstructions such as bridge plugs, metal and rubber from the well bore.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
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