Device for anchoring a probe in a well by spreading mobile ancho

Details Device for anchoring a probe in a well by spreading mobile ancho Device for anchoring a probe in a well by spreading mobile ancho

1989-05-30

1990-09-18

Kisliuk, Bruce M.

Wells

Expansible anchor or casing

Fluid pressure actuated

166217, 166242, E21B 2304

Patent

active

049571621

ABSTRACT:
A device is provided for anchoring a probe in a well by remote control spreading, from the surface, of at least one anchorage arm kept in a closed position by a retractable bolt engaged in a rod connected to the anchorage arm by links. The external pressure is exerted permanently on the bolt and the bolt is fast with a head movable in a cavity. A pressure is applied to the head which is proportional to the external pressure which holds the bolt locked in the rod or a much lower pressure resulting in release of the bolt.

REFERENCES:
patent: 3052297 (1962-09-01), Blydorp
patent: 3177938 (1965-04-01), Roussin
patent: 3294171 (1966-12-01), Kelley
patent: 3628569 (1971-12-01), Urbanoksy
patent: 4428422 (1984-01-01), Laurent
patent: 4616703 (1986-10-01), Laurent et al.
patent: 4715469 (1987-12-01), Yasuda et al.

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