High torque, low speed mud motor for use in drilling oil and gas

Details High torque, low speed mud motor for use in drilling oil and gas High torque, low speed mud motor for use in drilling oil and gas

1998-02-12

2000-04-18

Smith, Scott A.

Tool driving or impacting

Work cleansing

Cleansing fluid passage through hammer head

173 64, 173 73, 173 80, 173 91, 175296, F21B 106, F21B 414

Patent

active

060503467

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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patent: 5419403 (1995-05-01), Klemm
patent: 5680904 (1997-10-01), Patterson

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