DECISION ANALYSIS FOR BUMI HITAM FIELD DEVELOPMENT BY USING ANALYTICAL HIRARCHY PROCESS (AHP) CASE STUDY OF PT PERTAMINA EP

• Main Author: Apriansyah, Bayu
• Format: Theses
• Language: Indonesia
• Subjects: Manajemen umum
• Online Access: https://digilib.itb.ac.id/gdl/view/66719
• Institution: Institut Teknologi Bandung

PT Pertamina EP (PEP) as a subsidiary of Upstream Holding Pertamina has a role to carry out exploration and production tasks and activities in the western part of Java which includes onshore and offshore areas. Existing gas production in PEP Zone 7 continues to decline. The production performance of the main structure that contributes to the achievement of gas production is not as good as 2000s. Referring to the company's commitment to SKK Migas through the WP&B event (Work Program and Budget) as well as the company's commitment to Holding through the RKAP (Company Work Plan and Budget) event, the achievement of gas production for PEP Zone 7 is only 94%. Referring to the gas balance it shows that the gas supply from PEP Zone 7 is not able to keep up with gas demand from consumers. PEP Zone 7 through the Subsurface Development Department conducted a study on potential structures to increase gas production and supply capability. One of them is Bumi Hitam Complex which consist of Bumi Hitam Structure and Cililin Selatan Structure. The latest subsurface study, the estimated recoverable reserve is about 24 BSCF and 150 MBO. This comes from one workover, two infill well drilling, and two step-outs drilling activities. The current issue is how to handle the produced fluid. The closest production facility to the BMH structure is the Gathering Station (GS) of North Cililin (CLU) which is 23 kilometers (km) away. Gas Compression Station (GCS) Cilamaya which is operated by PT. Pertagas is 17 km away. The closest distance to the network pipe is 10 km, but the pipe is at compressor discharge so it has high pressure. To resolve the problem, VFT (Value Focused Thinking) approach is used. It generates three scenarios: build new gathering station and transport the fluid to compressor suction, transport gross fluid to GS CLU, and build new gathering station and transport the fluid to compressor discharge. Those scenarios consider cost, hydrocarbon recovery, net present value, and operability. Analytical Hierarchy Process (AHP) is used to find the best solution. Four subject matter experts (SME) conduct FGD (Focused Group Discussion) to assess each scenario considering those criteria. It generates scenario to build new gathering station and transport the fluid to compressor suction as the best scenario with the value reach 59.3%. The consistency ratio is also valid with the value of 0.07 (valid value requirement is less than 0.1).