Perpustakaan Digital ITB

Mature field in the oil and gas industry refers to field or area that have reached peak production or approaching the end of its productive time. To Increase production and extend the production lifetime, selecting wells candidate for optimization must be done appropriately to ensure that the optimization effort have a significant impact. However, the traditional method for well candidate selection do not integrate between production data, reservoir characteristic, and artificial lift performance, limiting their effectiveness. This study proposes a method for wells candidate selection based on the relationship between production data, reservoir characteristic, and artificial performance. These three parameters can represent the productivity of oil and gas wells. This study will examine an optimization strategy by integrating several parameters, between production data, reservoir characteristic, and artificial lift system especially Electrical Submersible Pump (ESP) to determine well candidates for optimization and increase the productivity of oil and gas wells. The result of this study provides an effective method for identifying high potential wells. Using the Modified Heterogeneity Index (MHI) method offers an efficient solution for rapid well screening, particularly in oil field with a large number of wells. This method has been applied to Field “A”, it is highly recommended for implementation in larger oil fields to support a significant and sustainable increase in oil and gas production. This study concludes that the Modified Heterogeneity Index (MHI) is a rapid screening method for identifying candidates wells that can present well performance (overperformance or underperformance) for further evaluation. This approach can categorize well and field productivity problems. The screening method using Modified Heterogeneity Index (MHI) was developed to classify wells into poor, average, good and excellent categories, allowing for more in-depth analysis and optimization. Various recommendation has been identified to enhance production, as discussed in the result and discussion section. The scope of this research is that the study employs an analytical approach without integrating geocellular reservoir models (static or dynamic). The research is conducted in Field 'A', with the production system considered limited to artificial lift and measurement via separator testing. The recommendations provided are confined to pump upsizing, pump servicing, pump downsizing, water shut-off using packers, cement squeezing, perforation within the same zone, and stimulation considered only for acid fracturing. Other optimization methods outside these categories are not addressed in this study. Recommendations for future improvement include more detailed wells evaluations, analysis of other artificial lift types such as Sucker Rod Pump (SRP) and Progressive Cavity Pump (PCP), economic evaluation, and implementation this well candidate screening method, not only in Field “A” but also in larger field and different reservoir characteristic. Keywords: Modified Heterogeneity Index, Artificial Lift, Electric Submersible Pump, Well Candidate, Well Performance, Screening Candidate.