About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin


AAPG Bulletin, V. 96, No. 12 (December 2012), P. 22752296.

Copyright copy2012. The American Association of Petroleum Geologists. All rights reserved.


Use of a computational fault-extraction process with calibrations to characterize a fractured basement reservoir, Yufutsu, Japan

Tetsuya Tamagawa,1 Kazuhiko Tezuka,2 Noriyoshi Tsuchiya3

1Japan Petroleum Exploration Company, Ltd., Research Center, 1-2-1 Hamada, Mihama-ku, Chiba, Japan; [email protected]
2Japan Petroleum Exploration Company, Ltd., Research Center, 1-2-1 Hamada, Mihama-ku, Chiba, Japan; [email protected]
3Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aramaki-aza-Aoba, Aoba-ku, Sendai, Japan; [email protected]


The Yufutsu oil and gas field, located in Hokkaido, northern Japan, produces hydrocarbon from a typical fracture-type reservoir composed of very tight Cretaceous granitic basement and overlying conglomerate of the Eocene. Here, delineations of faults accompanying large open fractures are essential for optimal developments.

To capture fault distribution objectively, various seismic-attribute estimates ascribed to fault distributions are derived from three-dimensional seismic data by computational procedures. However, to use the estimates properly, calibrating them with independent observations other than seismic data is important. We present a calibration scheme by coupling seismic data with microseismic data and in-situ stress data to delineate active faults under a strike-slip faulting stress regime in the Yufutsu field. Active faults are interpreted to be fluid pathways formed by shear dilation. In the calibration, two kinds of parameter sets are tuned. One controls linkages of fault responses fragmented by artificial noises caused by seismic acquisition and processing to adjust spatial continuities of fault surfaces properly. Another limits extracted fault strikes with respect to Mohr-Coulomb failure criterion to highlight active faults. The calibrated seismic-attribute estimates show a qualitative consistency with the microseismic hypocenter distribution observed during a massive hydraulic stimulation. In addition, a large difference in gas productivity observed at four wells, from very high productivity to no gas flowing, is clearly related to an existence of distinct lineation with strong magnitudes of the calibrated seismic attributes. It suggests that the calibrated estimate becomes a criterion to judge an economic viability of a well.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Protected Document: $10
Internal PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].