| 摘要 |
A casing stabbing tool (10) for facilitating screwing onto the uppermost downhole joint (30) of a casing string the next joint (50) comprises an upstanding frame (12) having mounted thereon lower clamping means (14, 16) for clamping the tool to the joint (30) and upper clamping means (18) for embracing the joint (50). Further clamping means (20) ensure alignment of the suspended joint (50) while it is being screwed on. The height of the lower clamping means may be adjustable by an actuating mechanism and the clamping jaws provided with vertical rollers which support the joint while allowing its rotation. A wire pulley mechanism may be housed within the frame (12) for positioning the tool (10). |
