Method and apparatus for drilling a well bore

Details Method and apparatus for drilling a well bore Method and apparatus for drilling a well bore

1981-08-24

1984-04-03

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 76, 175321, 175325, E21B 704, E21B 708

Patent

active

044402414

ABSTRACT:
A method of and apparatus for drilling directional well bores is disclosed in which the well bore or a portion thereof is drilled along a line that follows, as close as possible, a preselected catenary curve. An extensible joint located between a stabilizer just above the drilling bit and a stabilizer spaced from the bit stabilizer is used to cause the bit to tend to increase the dip angle of the well bore at an increasing rate.

REFERENCES:
patent: 2829864 (1958-04-01), Knapp
patent: 2901221 (1959-08-01), Whittle
patent: 3042125 (1962-07-01), Duncan
patent: 3088532 (1963-05-01), Kellner
patent: 3593810 (1971-07-01), Fields
patent: 3635036 (1972-01-01), Hooper, Jr.
patent: 3878903 (1975-04-01), Cherrington, Jr.
patent: 3997008 (1976-12-01), Kellner
patent: 4015673 (1977-04-01), Craig, Jr. et al.
patent: 4022279 (1977-05-01), Driver

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