Patent ID: 9010443
Filing Date: 2015-04-21
Classification: E21B

Abstract:
1. A slip bowl load transfer system comprising: a first slip bowl assembly adapted to engage and release a tubular member and comprising a first slip bowl coupled to a second slip bowl, wherein, in an engaged state, the first slip bowl assembly imparts a compressive force on a portion of the tubular member between the first slip bowl and the second slip bowl; a gap formed between the first slip bowl and the second slip bowl, wherein a sensor detects a change in the gap and wherein the sensor is tripped if the gap is smaller than a predetermined threshold; and a second slip bowl assembly adapted to engage and release the tubular member and that is aligned with the first slip bowl assembly; wherein, when the second slip bowl assembly is engaging the tubular member in a second engaged state, the second slip bowl assembly is prevented from releasing the tubular member if the sensor is tripped; and wherein the engaged state comprises engaging the tubular member with at least a minimum threshold of engaging force, wherein the minimum threshold of engaging force is a force sufficient to bite on the tubular member.