Integrated Production Modelling of PCA Gas Well for further Workover Strategy
Panca Suci Widiantoro(a), Indah Widiyaningsih(b), Dewi Asmorowati(b), Aprillie(b)
(a)Program Studi Teknik Perminyakan , Akademi MIGAS Balongan, Indramayu.
(b)Program Studi Teknik Perminyakan, Fakultas Teknologi Mineral, UPN “Veteran” Yogyakarta.
Abstract
Gas Well PCA was produced in February 1994. This well is produced commingle of 2 reservoirs A and B. DST result shows both two reservoirs have contrast deliverability. The last production test shows gas rate 7.28 MMSCFD. This well purposed to further workover program to obtained optimum recovery. Integrated production modelling is essential for well performance analysis, enhancement of the production system. Gas well performance cannot be analyzed without considering the reservoir, the flowline and the processing facility, as each of these components affect the operation of the entire production network. This study will take into account the effect of comingle of 2 layers with contrast deliverability by building integrated production model. The Inflow Performance Relationship (IPR) Curve will be analyzed each reservoir to know each production performance. History matching analyses also performed to check the reliability of model in dynamic condition. To achieve the accurate history matching results, the simulation model was run based on the available historical production data. Based on this study, current recovery of A reservoir was 55%, B reservoir was 75% and reservoir B already water out. It is recommended to do workover on this well by isolate reservoir B then re-perforate reservoir A and produce gas only from reservoir A to get optimum recovery.
Keywords: Commingle Gas Well, Integrated production modeling, Workover
Topic: Petroleum and Geothermal Engineering