Drilling device having a controlled path

Details Drilling device having a controlled path Drilling device having a controlled path

1988-03-25

1989-07-04

Kisliuk, Bruce M.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

175 76, 175325, 166241, E21B 708

Patent

active

048441783

ABSTRACT:
The drilling device comprises at least two stabilizers (7a, 7b, 7c) spaced apart in the longitudinal direction of the set of rods. The pistons (17a, 17b, 17c) of these stabilizers are interconnected and include common members (35, 37) for creating a pressure drop in the drilling fluid. Actuating surfaces (19a, 19b, 19c) including ramps (40) and complementary parts interconnecting the ramps cooperate with finger members (20) for effecting the extension of the bearing plates (21). The ramps (40) and the complementary parts of the actuating surfaces of the stabilizers (7a, 7b, 7c) are aligned in the longitudinal direction and are such that for each stable successive position of the pistons (17a, 17b, 17c), the bearing plates (21) are in positions of extension constituting a combination different from the preceding one.

REFERENCES:
patent: 3123162 (1964-03-01), Rowley
patent: 3129776 (1964-04-01), Mann
patent: 3424256 (1969-01-01), Jeter et al.
patent: 4388974 (1983-06-01), Jones Jr. et al.
patent: 4407377 (1983-10-01), Russell
patent: 4491187 (1985-01-01), Russell
patent: 4683956 (1987-08-01), Russell

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