Jarring tool

Details Jarring tool Jarring tool

1981-10-23

1985-01-22

Kazenske, E. R.

Tool driving or impacting

Impacting devices

With means to cause or control advance of hammer head

173 29, 175299, 175321, B25D 900, E21B 400

Patent

active

044946155

ABSTRACT:
An oil field jar includes a barrel and mandrel selectively interconnected by a ball transfer mechanism so that pulling upwardly on the jar causes a ring spring assembly to be stressed. As the spring assembly reaches its limit of stroke, the ball transfer mechanism trips so that the mandrel moves relatively freely with respect to the barrel. A hammer and an anvil carried by the mandrel and barrel then impact to create an upwardly directed jar on the fish to which the tool of this invention is connected. The ball transfer mechanism includes a plurality of balls which move both axially and radially of the tool during operation.

REFERENCES:
patent: 1801673 (1931-04-01), Knox
patent: 2122751 (1938-07-01), Phipps
patent: 2733046 (1956-01-01), Thompson
patent: 3343606 (1967-09-01), Dollison
patent: 3724568 (1973-04-01), Koepke
patent: 3834471 (1974-09-01), Bottoms
patent: 4333542 (1982-06-01), Taylor
Brochure of "Taylor Made Oil Tools Company".
"Journal of Petroleum Technology", Nov. 19, 1979, pp. 1381-1386.

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