Patent ID: 8118102
Filing Date: 2012-02-21
Classification: E21B

Abstract:
1. A method of using a reciprocating swivel tool in a drill or work string, the method comprising the following steps: (a) lowering a rotating and reciprocating swivel tool from the surface of a body of water to an annular BOP, the tool comprising a mandrel and a sleeve, the sleeve being longitudinally reciprocable relative to the mandrel and the swivel tool including a quick lock/unlock system which has locked and unlocked states of the sleeve relative to the mandrel; (b) after step “a”, having the annular BOP close on the sleeve; (c) after step “b”, causing relative longitudinal movement between the sleeve and the mandrel, wherein such relative longitudinal movement causing the quick lock/quick unlock system to enter an unlocked state; (d) after step “c”, and before raising the swivel tool to the surface of the water, causing relative longitudinal movement between the sleeve and the mandrel wherein such relative longitudinal movement causes the lock system to enter a locked state.