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1 Chevron, 1500 Louisiana Street, Houston, Texas 77002; asaller{at}chevron.com
2 Chevron, 1500 Louisiana Street, Houston, Texas 77002; present address: Chevron Thailand Exploration and Production, Tower III, SCB Park Plaza, 19 Ratchadapisek Road, Bangkok, Thailand
3 Chevron, 1500 Louisiana Street, Houston, Texas 77002
4 Chevron, 1500 Louisiana Street, Houston, Texas 77002
5 Chevron, 1500 Louisiana Street, Houston, Texas 77002; present address: Chevron Nigeria, 2 Chevron Drive, Lagos, Nigeria
6 Chevron, 1500 Louisiana Street, Houston, Texas 77002; present address: Chevron Australia, 250 St. Georges TCE, Perth, Western Australia 6001, Australia
7 Chevron, 1500 Louisiana Street, Houston, Texas 77002
Art Saller is a sedimentologist and stratigrapher for Chevron in Houston, currently working on deep-water Angola. He received his geology degrees from the University of Kansas (B.S. degree, 1977), Stanford (M.S. degree, 1980), and Louisiana State (Ph.D., 1984). From 1984 to 1986, he worked at Cities Service in Tulsa. Art joined Unocal in 1986 and worked there until it became part of Chevron.
Ken Werner joined Unocal as a geologist in 1990 and now works for Chevron. He holds a B.S. degree in geology from the University of California at Davis and an M.S. degree from Oregon State University. In 2008, his family moved from Houston to Bangkok where he now works on reservoir characterization in the Gulf of Thailand.
Fransiskus Sugiaman is a geologist for the reservoir modeling team at Chevron Energy Technology Company. He received his B.S. degree in 1990 from the Bandung Institute of Technology and his M.S. degree in 1994 from the University of Sydney.
Andre Cebastiant is currently a reservoir engineer working for the Chevron Indonesia Deep-Water Development Project. He received his B.S. degree in petroleum engineering from the Institut Teknologi Bandung, Indonesia, in 1997. He started his career with ARCO/BP Indonesia before joining Unocal/Chevron in 2004.
Ronald May is a reservoir engineer with Chevron in Lagos, Nigeria. He received his B.S. degree in chemical engineering from Ohio State University and his M.S. degree in petroleum engineering from Stanford University. He joined Unocal in 1984 and has had previous engineering assignments in California, Thailand, and Indonesia.
David Glenn has been a geophysicist for over 30 years working with small independent and large integrated oil companies. He received his B.S. degree in geophysics from Texas Tech University. He started with Unocal in January 1998, working on onshore U.S. exploration and then in Jakarta, working on deep-water development. He is now a team leader in the Gorgon deep-water exploration group in Perth.
Craig Barker is currently the geophysical coordinator for Chevron North America Exploration and Production Deepwater. He received his B.S. degree in geology from the University of Miami (1983) and his M.S. degree in geophysics from the University of Utah (1986). Since 1985, he has worked as a geophysicist for Tenneco, Unocal, and Chevron in the shelf and deep-water Gulf of Mexico and deep-water Indonesia.
ABSTRACT
An upper Pleistocene basin-floor fan was characterized from seismic data to provide analogs for reservoir elements in deep-water fields planned for development, including Gendalo gas field, offshore East Kalimantan, Indonesia. The Pleistocene basin-floor fan is approximately 170 m (550 ft) thick, about 22 km (13.6 mi) across, and contains 18 lobes. The average lobe size is 3.8 by 7.2 km (2.3 by 4.4 mi) with an average thickness of 34 m (111 ft). Lobes contain sheetlike splay elements, distributary channels, and younger incised channels. Lobes range from splay dominated to channel dominated. Splay elements are 400–1200 m (1312–3937 ft) wide, 500–3000 m (1640–9842 ft) long, and 4–13 m (13–42.6 ft) thick. Distributary channels have an average width of 161 m (528 ft), average thickness of 12.6 m (41.4 ft), and average length of 2.2 km (1.3 mi). Younger channels incising into older lobes have an average width of 392 m (1286 ft) and an average thickness of 13 m (42.6 ft).
The upper Miocene Gendalo 1020 reservoir is composed of turbidite sands draped over an anticline. The reservoir has been penetrated by four wells and is imaged by a three-dimensional seismic survey with a dominant frequency of 15–20 Hz in the reservoir interval. The gross reservoir interval is 50–150 m (165–500 ft) thick and contains thin-bedded turbidite sands with a net-to-gross of approximately 50%. Seismic attributes indicate a fan-like morphology. Sands occur in 9–40-m (29–130 ft)-thick packages interpreted as lobes. Lobes, 3.5 to 7.5 km (2.2 to 4.7 mi) across, were mapped seismically, which was consistent with the Pleistocene fan; however, the seismic data could not image intralobe features like channels and splays. Dimensions from Pleistocene channels and splays were used to stochastically model channels and splays within the Miocene fan lobes. Well test data and pressure data are consistent with the model.
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