Drilling technique for providing multiple-pass penetration of a

Details Drilling technique for providing multiple-pass penetration of a Drilling technique for providing multiple-pass penetration of a

1981-10-27

1983-06-07

Pate, III, William F.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

166 50, E21B 706

Patent

active

043866654

ABSTRACT:
This specification discloses a technique of providing a wellbore that is extended along a track from the surface of the earth and penetrates and passes through a subsurface mineral-bearing formation a plurality of times. The wellbore is initially extended from the surface of the earth into the earth's crust in essentially a vertical direction and then is deviated toward the horizontal and extended to pass through the subsurface mineral-bearing formation from top to bottom at an oblique angle. The wellbore is then further deviated and extended along a track in an upwardly direction such that it again penetrates and passes through the subsurface mineral-bearing formation, this time from bottom to top. The wellbore may then again be deviated and extended along a downward track to again penetrate the formation from the top.

REFERENCES:
patent: 2280851 (1942-04-01), Ranney
patent: 2404341 (1946-07-01), Zublin
patent: 2565794 (1961-08-01), Young
patent: 3986557 (1976-10-01), Striegler

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