Down-hole, production pump and circulation system

Wells – Processes – Producing the well

Patent

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Details

166105, 417444, E21B 4312

Patent

active

059413115

ABSTRACT:
A production pump & circulation tool (1, FIG. 1) used down-hole on the end of a production string (FIG. 10) including: a combined traveling valve assembly bottom connector (10) and fishing tool section (20) which engages gripping pins (51) for twisting the tool and is associated with a traveling ball valve (11/12); a sleeve (30); peripherally spaced, "J" slots (43) in an outer member (40) in which guide pins (52) move changing the tool's state with rotation about a longitudinal axis; a biasing spring (81); a standing valve assembly (50) which carries at its top a projector for unseating the traveling ball valve and to which the pins are attached and which encloses a standing valve ball (50A) and carries its seat (50B); a combined bushing (60) and top spring seat (70); a spring housing (80); and a standing valve projector (90) which can unseat the standing ball from its valve seat when the assembly 50 is lowered against the force of the spring. A pumping "valve locked closed" disposition (FIGS. 10B-D) and an injection "valve locked open" disposition (FIG. 10E). An atomizer (270) is utilized and/or a standing valve injector (320) and/or a projector channel (93) in the lower standing valve projector (90) are utilized for injecting diluents. The tool barrel and plunger with a non-abrasive outer "lining" and a non-corrosive inner "lining".

REFERENCES:
patent: 2131299 (1938-09-01), Reagin
patent: 2764940 (1956-10-01), Long
patent: 3414057 (1968-12-01), Harbison
patent: 4157117 (1979-06-01), Huckaby
patent: 4573529 (1986-03-01), Reinhardt
patent: 4867242 (1989-09-01), Hart
patent: 4880062 (1989-11-01), Bland et al.
patent: 5062480 (1991-11-01), Chacin U. et al.
patent: 5382142 (1995-01-01), Spears
Descriptive flyer of "Spears Backwash Valve".

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