Downhole tool with ratcheting swivel and method

Details Downhole tool with ratcheting swivel and method Downhole tool with ratcheting swivel and method

2005-01-18

2005-01-18

Bagnell, David (Department: 3672)

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

C166S255200, C166S055000, C166S055700

Reexamination Certificate

active

06843320

ABSTRACT:
A system for perforating a well includes a perforating gun10and a swivel12suspended from a wireline50. An orientation sub14is provided above the gun10and a rotational latching mechanism90rotationally connects the wireline to the perforating gun in one direction, while allowing the swivel to rotationally disconnect the gun from the wireline in an opposing direction. According to the method of the invention, the gun may be lowered in the well from the wireline to a depth greater than the desired firing depth until the gun is rotated to its desired azimuthal position, and the gun then raised by the wireline to the desired firing depth with a rotational latching and swivel mechanisms maintaining the gun at its desired azimuthal position.

REFERENCES:
patent: 3485224 (1969-12-01), Ronald
patent: 4573536 (1986-03-01), Lawrence
patent: 5259466 (1993-11-01), Venditto et al.
patent: 6173773 (2001-01-01), Almaguer et al.

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