Intermittent high-drag oil well drilling methods and apparatus

Details Intermittent high-drag oil well drilling methods and apparatus Intermittent high-drag oil well drilling methods and apparatus

1979-03-28

1981-03-17

Leppink, James A.

Boring or penetrating the earth

With below-ground tool drive prime mover

Below-ground storage of motivating energy

175104, 175107, E21B 312, E21B 936

Patent

active

042561914

ABSTRACT:
Methods and apparatus are disclosed for the rapid and efficient drilling of oil well and other types of bore holes through tough abrasive underground formations, which methods and apparatus utilize high drag intermittent contact and cooling techniques to provide good rates of penetration with low wear and heat deterioration on the drilling tools.

REFERENCES:
patent: 1391626 (1921-09-01), Gilthorpe
patent: 1456681 (1923-05-01), Schepp et al.
patent: 3369618 (1968-02-01), Moore
patent: 3695370 (1972-10-01), Jones
patent: 3866678 (1975-02-01), Jeter

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