Wells – Processes – Separating material entering well
Patent
1992-11-19
1994-05-10
Dang, Hoang C.
Wells
Processes
Separating material entering well
1661055, 166369, E21B 4338
Patent
active
053099982
ABSTRACT:
A well pumping system for pumping a fluid having a liquid and a gas is disclosed which system includes a well casing and a production tube set within the well casing so as to define an annular space between the production tube and the well casing, the production tube including a shoe comprising a hollow tubular article having a substantially cylindrical wall defining a first flow passage, a second flow passage being formed within the wall of the shoe, the first flow passage having a first inlet for the liquid and a first outlet to the annular space, the second flow passage having a second inlet for the gas and a second outlet to the production tube, whereby the liquid is produced through the annular space and the gas is produced through the production tube. The pumping system preferably includes a pump for pumping the liquid to the first inlet, and a rod string for actuating the pump, the rod string being disposed within the production tube, whereby the rod string is substantially isolated from the liquid.
REFERENCES:
patent: 1628900 (1927-05-01), Neilsen
patent: 2433942 (1948-01-01), Works
patent: 2488931 (1949-11-01), Penick
patent: 2748719 (1956-06-01), Wells
patent: 2883940 (1959-04-01), Gibson
patent: 4676308 (1987-06-01), Chow et al.
patent: 5176216 (1993-01-01), Slater et al.
Rivas Olegario
Sandoval Jose L.
Dang Hoang C.
Intevep S.A.
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