Patent ID: 7434633
Filing Date: 2008-10-14
Classification: E21B

Abstract:
1. A downhole jet cutting tool comprising: a housing having an upper end for connection to a conduit string for running the downhole jet cutting tool into a well; the housing having a passageway for communicating a cutting fluid pumping down the conduit string to the downhole jet cutting tool; an actuating member operatively associated with the passageway whereby the actuating member is actuatable by the cutting fluid, the actuating member having an initial position and a plurality of actuated positions and actuation of the actuating member comprises the actuating member moving axially along a length of the passageway; and a jet nozzle assembly, the jet nozzle assembly comprising an arm operatively associated with the actuating member whereby the arm is moved from a retracted position to one of a plurality of extended positions by the actuating member moving from the initial position to a corresponding actuated position, the arm having a cutting end and pivot end, the pivot end being pivotally connected to the housing, and the cutting end comprising a cutting head having a nozzle for expelling the cutting fluid, wherein the passageway of the housing and the nozzle of the cutting head are in fluid communication with each other such that the cutting fluid can flow from the passageway and out of the nozzle at a pressure sufficient to cut a cutting surface disposed within the well.