Abstract: A liner cleaning tooling comprising an elongate vertically extending cylindrical body, coupling means at the upper end of the body to connect with a fluid conducting run-in pipe string, a central longitudinal flow passage in the body communicating with the pipe string and opening downwardly, an enlarged, central, axially extending cylindrical chamber in the body between the upper and lower end portions of the flow passage, a plurality of circumferentially spaced ball receiving openings in the body communicating between the exterior of the body and the chamber, an elongate axially shiftable mandrel with a downward and radially inwardly convergent conical surface slidably engaged in the chamber and having a central longitudinal fluid conducting opening, a helical compression spring in the chamber above the mandrel and engaging and normally yieldingly urging the mandrel downwardly and a ball rotatably and axially shiftably arranged in each opening and having an outer liner engaging portion projecting radially ou

Abstract: A gas anchor for an oil and gas producing well; the gas anchor includes an elongate fluid gas conducting coupling with upper and lower ends; the upper end of the coupling is engaged in the lower end of a production tubing entering the well; an elongate vertical pipe is arranged in the well below the coupling; the pipe has a closed lower end, a perforated upper end portion and has an upper end engaged with the coupling; the coupling has a central vertical oil conducting passage; an elongate, vertical oil conducting stinger is arranged centrally in the pipe and has a lower end opening at the lower end portion of the pipe and an upper end communicating with the oil conducting passage; the coupling next includes a plurality of circumferentially spaced upwardly and radially inwardly inclined gas nozzle openings with lower end communicating with the interior of the pipe above the perforations and directing gas jets upwardly and inwardly to converge above the oil conducting openings whereby gas flowing up through th