Wells – With electrical means – Valve
Patent
1990-12-20
1993-01-26
Dang, Hoang C.
Wells
With electrical means
Valve
73152, 166100, 1662412, E21B 4900
Patent
active
051815656
ABSTRACT:
A well probe including two offset shoes fixed outside of a tubular column and an intermediate shoe provided with a central passage having a cross section larger than a cross section of the column. The intermediate shoe is connected to a lower offset shoe by a mobile hasp. A mobile harness is adapted to be moved into and out of a lateral cavity of the intermediate shoe for enabling coupling and uncoupling of the intermediate shoe with a wall of the well. The mobile harness includes a casing for accommodating sensors and a hydraulic triggering arrangement, with the sensors and the hydraulic triggering arrangement being connected to a surface installation by cables and an electronic cartridge.
REFERENCES:
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patent: 3500683 (1970-03-01), Hoyle
patent: 3690166 (1972-09-01), Grice
patent: 4671379 (1987-06-01), Kennedy et al.
patent: 4744416 (1988-05-01), Bower
patent: 4775009 (1988-10-01), Wittrisch et al.
patent: 4862425 (1989-08-01), Cretin et al.
patent: 4898237 (1990-02-01), Wittrisch
patent: 4901289 (1990-02-01), Cretin et al.
patent: 4986350 (1991-01-01), Czernichow
Dang Hoang C.
Institut Francais du Petrole, Total Compagnie Francaise des Petr
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