Sleeve valve hydraulic jar tool

摘要: A hydraulic jarring tool includes a reliable and closely repeating detent actuation means. The an outer member inner telescopically arranged. Spline means between said transmit torque. hammer anvil system provide effect upon of the tool. An upper seal lower fluid member. working is maintained in chamber seals. provides tripping action to produce effect. Annular grooves stop cooperate with sliding sleeve element orifice passages that by slow metering fluid. Large bypass holes through allow flow rapidly opposite direction recock jar