Dr. Ir. Mochammad Syaiful, M.Si.

Judul	:	Overpressure in Budi Field, Palmerah Block, Jambi Sub-basin
Abstrak	:	Budi Field in Palmerah Block has been producing hydrocarbon (oil) since 2013. This oil comes from Air Benakat sandstone reservoirs, ranging in depth of 360 m to 680 m. The Air Benakat Formation is in hydrostatic or normal pressure in this area. A number of 15 wells have been drilled in Budi greater area, however only 1 well penetrated deep enough to the basement. Currently Tately N.V. just finished to drill another exploration well to penetrate deeper formation, i.e. Talang Akar Formation, in order to discover more hydrocarbon. Top of an overpressure is recognized in a depth about 1960 mMD, based on deep resistivity, density, and sonic wireline logs. This overpressure zone is not only identified using the conventional method, but it is also confirmed by cross plot of density and sonic logs, that introduced by Dutta – Katahara as a new method. Furthermore, the plotted data of density and sonic nicely follow the transition line, then stops in illite line of Dutta – Katahara diagram. Disequilibrium compaction is the reason for the overpressure. The existence of overpressure zone is also supported by pressure data during well drilling. By understanding the pressure regime, future drilling campaign will be enhanced in order to lead for hydrocarbon discovery.
Tahun	:	2019	Media Publikasi	:	Prosiding
Kategori	:	Prosiding	No/Vol/Tahun	:	123 / 123 / 2019
ISSN/ISBN	:	1234
PTN/S	:	Pakuan	Program Studi	:	TEKNIK GEOLOGI
Bibliography	:	Dutta, N. C., 2002, Deepwater geohazard prediction using prestack inversion of large offset P-wave data and rock model, The Leading Edge, 21, 193 – 198. Ginger, D., and Fielding, K., 2005, The petroleum systems and future potential of the South Sumatra Basin, Proceedings of Indonesian Petroleum Association 30th Annual Convention and Exhibition, 67 – 89. Katahara, K., 2006, Overpressure and shale properties: stress unloading or smectite-illite transformation?, 76th SEG Annual Meeting, expanded abstracts, 1520 – 1524. Syaiful, M., 2019, Relationship between mudstones compaction and overpressure magnitude: case study of North Sumatra Basin, doctoral dissertation, Bandung Institute of Technology. Syukri, I.Y., Permana , B.P., Heppard, P.D., Ramdhan, A. M., dan Hutasoit, L.M., 2019, Pore-pressure analysis in the Corridor Block, South Sumatra Basin: distribution, origin, mechanism, and prediction, Proceedings Indonesian Petroleum Association 43rd Annual Convention, 18 pages
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