| 摘要 |
A method of cutting a well casing located beneath a subsea wellhead wherein a cutting assembly is made and lowered into an operative position. A mounting device is secured to the wellhead and the cutter is radially expanded into engagement with the casing. The motor is operated so as to rotate the tubing string and thereby rotate the cutter to cut the casing. A cutting assembly is used to cut a well casing. The cutting assembly has a motor mounting device, a motor, an output shaft, a radially expandable cutter and a tubing string. The tubing string connects the cutter to the output shaft of the motor and clamp members secure the mounting device to the wellhead so that the rotary reaction forces from the mounting device are transmitted to the wellhead. Axial reaction forces are also transmitted from the mounting device to a radially extending surface of the wellhead. |
