Rotating and reciprocating swivel apparatus and method

A method of using a reciprocating swivel in a drill or work string, the method comprising the following steps:

• (a) lowering a rotating and reciprocating swivel tool to a BOP, the swivel tool comprising a mandrel and a sleeve, the sleeve being reciprocable relative to the mandrel and the swivel tool including a quick lock/quick unlock system which has locked and unlocked states, the swivel tool including an interstitial space between the sleeve and the mandrel, the swivel having a pressure relief system for the interstitial space, wherein longitudinal movement of the sleeve relative to the mandrel changes the pressure relief system between a pressure relief mode and a non-pressure relief mode;
• (b) after step “a”, having the BOP close on the sleeve;
• (c) causing relative longitudinal movement between the sleeve and the mandrel thereby causing the quick lock/quick unlock system to change from an unlocked state to a locked state.