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Modeling Tight Sandstone Gas System by Map Based Isotopic Kinetical Tool: A Case Study of Ordos Basin, China

Feiyu Wang¹, Meng Xiaohui¹, Feng Weiping¹, Zhiyong He², and Yongchun Tang³
¹State Key Laboratory of Petroleum Resource and Prospecting, College of Geoscience, China University of Petroleum (CUP),Changping, Beijing, China
²ZetaWare, Inc.,Sugar Land, TX, USA
³Power, Environmental and Energy Research (PEER) Institute, Covina, CA, USA

The variability of gas composition and isotope geochemistry in basin depend on the type and maturation of source rock, size and distribution of fetch area, and gas accumulation mode (instantaneous, cumulative or intervenient). The Sulige tight sandstone gas field of Ordos basin, are selected as quantitative, calibrated case studies that describe the relationships between source kitchen, fetch area, burial and uplift history, volume of expelled gas, gas resource size, to quantify gas accumulation efficiency from source kitchen to trap. Gas yields and isotope kinetics algorithms have be used in conjunction with Interactive Basin and Petroleum System Modeling (BPSM) tool (Trinity 3D) to quantify gas generation in the source kitchen and fetch area, and to constrain the gas charge and accumulation history in the play and prospect. Case studies are presented to illustrate how the new map based chemical kinetical quantitative tool to determine the origin of natural gas, source kitchen and fetch area, charge history.

AAPG Search and Discovery Article #120098©2013 AAPG Hedberg Conference Petroleum Systems: Modeling the Past, Planning the Future, Nice, France, October 1-5, 2012