Impact enhancing apparatus and method

Details Impact enhancing apparatus and method Impact enhancing apparatus and method

E - Fixed Constructions

21

B

E21B 31/107 (2006.01)

Patent

CA 2510619

The invention provides an impact enhancer apparatus comprising a substantially tubular inner member (10), a substantially tubular outer member (12) which is axially movable in relation to the inner member (10), a primary energy storage device (50) adapted to store energy when the inner member (10) is moved in either of first and second axial directions with respect to the outer member (12) and a secondary energy storage device (48) adapted to store energy when the inner member (10) is moved in a first axial direction with respect to the outer member (12). The primary energy storage device (50) can comprise a primary biasing device. The secondary energy storage device can comprise a secondary biasing device. The primary and/or secondary biasing devices can be a spring device selected from the group consisting of: disk springs; coiled springs; fluid and gas springs. The impact enhancing devices preferably comprise tubulars having double shoulder high torque connections (J1, J2, J3).

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