E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/33
E21B 43/00 (2006.01) E21B 37/06 (2006.01) E21B 41/02 (2006.01) E21B 43/12 (2006.01)
Patent
CA 1305406
86-328 ABSTRACT OF THE DISCLOSURE The present invention relates to an improved system and method for recovering oil. The system includes a subsoil pump for pumping oil to the surface having an opening in its casing through which an assisting, treatment, or maintenance fluid may be added in a desired quantity. The opening is located substantially at the level of the pump's oil inlet and communicates with a supply of fluid via a passageway having a check valve for admitting only precise quantities of fluid to the opening.
575840
Bermudez Simon C.f.
Intevep S.a.
Swabey Ogilvy Renault
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