Publications

When oil production does not meet projections, declining of well performance is among several likely causes. According to Prasetya and Herputra, 2015, current national production decline is 4% per year. Evaluation needs to be conducted to determine how the optimum production can be achieved by the operator. In 2014, approximately 1000 workover activities and 30,000 well service activities were performed by operators in Indonesia. Although the production gained from workover and well service activities was above prediction, the production gained from workover jobs was still below the target. Evaluation of production performance of each operator is done to determine the causes. Performance was evaluated by looking at subsurface issues, performance improvement efforts, the number of wells that were shut in, how quickly was the response to potential loss of production, and evaluation of wells that contributing to production. Analysis of the decline rate was also evaluated to ensure its validity. The “F” Field, which is managed by an offshore oil and gas operator, has carried out a performance evaluation in order to obtain a significant increase in oil and gas production. Evaluation of the subsurface at existing wells was conducted to review the existing reservoir potential. Evaluation on a number of suspended wells was also conducted intensively to determine an optimum value of production. In the last five years, with only 45 wells, the “F” field accounted for 10% contribution of the 12 existing fields. Remedial work is done immediately on a shut in well to reduce lost production. Collaboration between planning and operations is certainly the key to optimum production achievement. This paper presents how the performance evaluation of production, if done right, is the answer to the question of how to restrain the rate of production decline of a field, to revive shut in wells and to achieve optimum production.