A jackup drilling rig was used to drill seven exploration wells in the U.K.and Norwegian sectors of the North Sea during a 2-year drilling program.The rig was secured in a very tight rig market by use of sublet-well commitments and assignments.The drilling rig was shared between two Amoco(now a part of BP)business units for four wells and another major operator for three wells.Sharing the rig and personnel enabled cost savings through shared lessons learned,continuous improvement,and reduced permitting time.Additional savings were achieved through detailed planning and risk assessment that significantly reduced unscheduled-event(trouble)time.
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