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.

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, FIGS. 2A-2C) which engages griping pins (51) for twisting the tool and is associated with a traveling ball valve (11/12); a sleeve (30, FIGS. 3A-3C); peripherally spaced, "J" slots (43) in an outer member (40, FIGS. 4A-4C) in which guide pins (52) move changing the tool's state when one part is rotated about a longitudinal axis with respect to the other, causing it to longitudinally move with respect to the other under or against a biasing spring (81); a standing valve assembly (50, FIGS. 5A-5C) 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, FIGS. 6A & 6B); a spring housing (80, FIGS.