Wells – With electrical means
Patent
1986-01-21
1987-08-11
Novosad, Stephen J.
Wells
With electrical means
166385, 439451, E21B 1922
Patent
active
046855165
ABSTRACT:
A downhole tool is supported by coilable tubing extending into the wellbore from a tubing injection and withdrawal apparatus and includes an elongated electrical signal transmitting cable extending through the tube between the tool and the injection apparatus. The tool is connected to one end of the tube by a connector assembly which provides for limited swiveling movement of the tool relative to the end of the tube to preclude excessive lateral loads from being exerted on the tool during positioning of the tool in the wellbore. The connector assembly includes a frangible coupling comprising coupling members which are interconnected by shearable pins whereby separation from the tool will occur at the connector assembly in the event the tool becomes stuck in the wellbore. One of the coupling members includes a fishing neck for engagement with a suitable fishing tool whereby the downhole tool may be retrieved if separated from the tubing. Fluids may be pumped downhole through the tube and the connector assembly to provide improved downhole operating methods.
REFERENCES:
patent: 2661063 (1953-12-01), Owens
patent: 3034088 (1962-05-01), Caller
patent: 3401749 (1968-09-01), Daniel
patent: 3503444 (1970-03-01), Owen
patent: 3594701 (1971-07-01), Ramsey
patent: 3781456 (1973-12-01), Knowles et al.
patent: 4498532 (1985-02-01), Mason
patent: 4570709 (1986-02-01), Wittrisch
patent: 4624308 (1986-11-01), White
Blount Curtis G.
Petermann Steven G.
Smith Lonnie J.
Atlantic Richfield Company
Bagnell David J.
Martin Michael E.
Novosad Stephen J.
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