E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/12 (2006.01) E21B 17/00 (2006.01) F04B 47/02 (2006.01)
Patent
CA 2551315
Assembly and method for extracting fluids, preferably crude oil, from a drilled well within a geological formation by means of reciprocating pumping with hollow sucker rods. Particularly, the assembly comprises: a) a stationary bottom set that is lowered into the well in a single independent run, it is attached to the casing at the desired depth, wherein the set provides the rod pump anchoring system; b) a reciprocating axial movement rod pump consisting of an anchoring system and a centralizer, both integral to the stationary member; c) a centralized hollow rod string extending within the well, and which is connected by its bottom end to the mobile member of the pump by means of a flow linking and drain tube that enables the flow from within the pump to the interior of the hollow rod string; d) a hollow polished rod that is connected to the hollow rod string, said polished rod being linked to a system that imparts the reciprocating axial movement to the pump; e) a production bridge that connects the polished rod to the driving tubing through rotating joints, and f) a rigid head that provides a venting exit of the annular space formed between the string and the casing, while packing said space and lubricating the polished rod.
Bianchetti Omar
Ruggeri Jorge
Scaramuzza Jose L.
Moffat & Co.
Ypf Sociedad Anonima
LandOfFree
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