Bukit Tua Development Project, East Java, Indonesia
The Bukit Tua Development Project involves the development of the Bukit Tua oil and gas field located 35km north off the coast of Madura Island in the Ketapang PSC, in offshore East Java, Indonesia. The oil and gas field is located at a water depth of 57m (187ft).
The field is expected to produce approximately 22.8 million barrels of oil and 70 billion standard cubic feet of gas during the first five years of production. Production from the field is expected to start by the end of 2014.
The Ketapang Production Sharing Contractors (PSC) offshore region is operated by PETRONAS Carigali Ketapang. PETRONAS holds an 80% share in the Ketapang PSC, while the remaining 20% is held by PT Saka Ketapang Perdana, a wholly-owned subsidiary of PT Saka Energi Indonesia. The Bukit Tua Development Project was acquired from ConocoPhillips in 2008.
Discovery, geology and reserves of Bukit Tua field
The Bukit Tua oil and gas field was discovered in April 2001, with the drilling of the Bukit Tua-1 well at a depth of approximately 6,500ft.
The Oyong oilfield is situated 8km off the coast of Madura Island in the East Java region of Indonesia.
The field is estimated to contain recoverable reserves of 65 million barrels of oil and 110 billion cubic feet of gas.
The oil and gas are located within the Oligo-Miocene carbonate reservoirs of the Kujung and Ngimba formations.
Bukit Tua field development details
Following the drilling of the first well, the field was further appraised by Bukit Tua-2 and 3A wells, drilled in 2003, and Bukit Tua-4 drilled in 2004. The operator is currently drilling the Bukit Tua South-2 appraisal well to assess the Bukit Tua South-1 oil discovery made in 2012. The plan for development (POD) of the Bukit Tua Field was approved in July 2008.
The development plan for the Indonesian offshore oil and gas field involves the drilling of five production wells and one injection well, and installation of an unmanned well head platform (WHP) featuring three legged jackets, nine drilling slots, and a topside weighing 1,500t. The WHP will be linked to a spread-moored floating production storage and offloading (FPSO) facility located 900km away.
The spread moored FPSO will be converted from an existing Aframax Tanker. The FPSO is expected to have a daily processing capacity of approximately 45,000 barrels of liquids per day and a crude storage capacity of 630,000 barrels. It will also be capable of handling two million cubic meters of gas.
Gas will be transported through a 110km export pipeline to an onshore receiving facility (ORF) in Gresik, while oil will be exported from the FPSO with tandem mooring through a floating hose. The produced water will be disposed into the sea.
Petrogas Jatim Utama, will purchase the gas from the field, under a gas sales purchase agreement (GSPA) signed in April 2012. The purchased gas will further be transferred to PT. Pembangkit Jawa Bali through a 23km pipeline.
Contractors for Bukit Tua offshore project
MMCOG (MMC Oil & Gas Engineering) is providing the front end engineering design (FEED) services for the project.
Keppel Shipyard will carry out the conversion of the FPSO, while Technip MHB Hull Engineering (TMH) will carry out the modification of the marine and safety systems, and provide the engineering design services for the mooring and riser systems, offloading system, module supports, flare and helideck of the FPSO. The topside of the WHP was constructed by PT PAL Indonesia.