Abstract
Pacific Operators Offshore Inc. (POOI) as the operator of 3 leases within the Carpinteria field participated in two projects with the DOE that supported the planning and implementation of the Offshore Carpinteria Field redevelopment. The first was the Advanced Reservoir Management (ARM) Project, which used 3-D modeling and simulation to better identify target intervals for redevelopment. During the ARM project a 19 well workover program was initiated. The ARM project directly supported the second undertaking, a Class III field demonstration project. This included 6 redrills: 2 vertical pilots and 4 horizontal wells. Reservoir characterization efforts included extensive petrophysical and geologic work to thoroughly map and correlate the productive intervals and identify targets, which contained oil bypassed by the natural water drive. Drilling and completion accomplishments include the use of a modified workover rig (240,000 lb. mast) to drill the slimhole wells from 7" casing, and produce the non-gravel packed wells with rod driven production systems.
Only 19% of the estimated 521 million bbl original oil in place have been produced (98 million bbl) field wide. The analysis of the Carpinteria field and successful pilot 6 well drilling project has led to an extensive redevelopment plan. The initial results of the redevelopment program have been encouraging, with an additional production of 300,000 BOE. The tentative redevelopment plans include 18 to 27 horizontal wells, 5 to 9 vertical redrills, 20 to 30 workovers, a pilot waterflood, and possibly a full field waterflood project.
