Deepwater Workover Experience With Extreme Hydrostatic Overbalance

摘要

The full-length paper presents planning and execution details for fluid-loss control during workovers with "extreme-hydrostatic-overbalance" (EHO) conditions (i.e., between 1,500 and 4,000 psi). Actual results for several wells from three deepwater fields in the Gulf of Mexico (GOM) are included. The information is applicable to operators that face similar requirements to maintain well control throughout the workover, mitigate any damage to the installed sand control or reservoir, and complete removal of the fluid-loss barrier to re-establish production.