Patent ID: 9249634
Filing Date: 2016-02-02
CPC Classification: E21B

Claim Text:
1. A method for removing tubulars from wellbores, the method comprising the following steps: a. energizing an upper gripping member to grip a tubular, wherein the upper gripping member is a portion of an upper section of a wellbore tubular removal system; b. extending the upper section from a lower section of the wellbore tubular removal system to raise the tubular from the wellbore to a first distance from the wellbore; c. energizing a lower gripping member of the lower section to grip the tubular; d. releasing the upper gripping member from the tubular; e. retracting the upper section towards the lower section; f. engaging the upper gripping member with the tubular; g. releasing the lower gripping member from the tubular; h. extending the upper section away from the lower section to raise the tubular from the wellbore to a second distance from the wellbore; i. forming at least one lifting hole in the tubular; j. engaging the lower gripping member with the tubular; k. releasing the upper gripping member from the tubular; l. extending the upper section away from the lower section to raise the tubular from the wellbore to a third distance from the wellbore; m. installing a lifting member in each lifting hole; n. removing the tubular additional distances from the wellbore using the wellbore tubular removal system; o. connecting the lifting member with a hoist; p. cutting the tubular using a saw of the wellbore tubular removal system, thereby forming a cut tubular; q. removing the cut tubular from the wellbore using the hoist; r. retracting the upper section relative to the lower section; and s. using a dead man switch to energize the lower gripping member, the upper gripping member, or both the lower gripping member and the upper gripping member when the upper gripping member or the lower gripping member fails or when the hoist releases.