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The rig skidding system typically includes two separate gripper jack systems. The upper skid system is comprised of two gripper jacks installed on each side of the skid base structure in order to skid the upper DES in the North-South direction. The lower skid system will also is comprised of two gripper jacks installed on each side of the capping beam in order to skid the entire DES structure in the East-West direction.
Skid system requirements (Example for a platform with more than thirty well bay slots arranged in a 4x8 pattern):
The Rig Skidding System shall be capable of skidding the DES and Skid Base with full set back load. It: