Oil-well installation fitted with a bottom-well electric pump

Wells – With heating – refrigerating or heat insulating means – With eduction pump or plunger in well

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Details

166 664, 166106, 417417, 4174233, E21B 4300

Patent

active

056200480

ABSTRACT:
Oil-well installation extending from the surface (14) to an oil-bearing rock stratum (16) comprising a tubing (20), arranged in the well and forming a flow channel to the surface for hydrocarbons originating from the oil-bearing rock stratum, a casing (18) delimiting the wall of the well, and a seal (24) arranged at the well bottom between the tubing (20) and the casing (18) so as to form a chamber (26) isolated from the hydrocarbons, the installation furthermore comprising, in the well, a pump (30, 48) and an electric motor (34, 46) which is intended to actuate the pump. According to the invention, the stator (40, 52) of the electric motor (34, 46) is arranged outside the tubing (20) and isolated thereby from the hydrocarbons flowing inside the tubing.

REFERENCES:
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patent: 2725824 (1955-12-01), Arutunoff
patent: 2739650 (1956-03-01), Hill
patent: 4266607 (1981-05-01), Halstead
patent: 4413958 (1983-11-01), Webb
patent: 4538970 (1985-09-01), Rabson
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patent: 4768595 (1988-09-01), Smith
patent: 4815949 (1989-03-01), Rabson
patent: 4928771 (1990-05-01), Vandevier
patent: 5049046 (1991-09-01), Escue et al.
patent: 5193985 (1993-03-01), Escue et al.
patent: 5482117 (1996-01-01), Kolpak et al.

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