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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
AAPG Bulletin, V.
DOI: 10.1306/0727201612317147
Coupled stratigraphic and petroleum system
modeling
: Examples from the Ordos Basin, China
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Keyu Liu,1 Jianliang Liu,2 and Xiu Huang3
1Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao, Shandong, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; [email protected], [email protected]
2Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao, Shandong, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; [email protected]
3Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China; [email protected]
ABSTRACT
With the emergence of the “continuous petroleum accumulations” concept and unconventional petroleum exploration, the traditional source-to-trap petroleum system model becomes vague spatially because the source, reservoir, and seal may intermingle within the same stratigraphic unit. In such a system, the spatial distribution of key petroleum system elements therefore depends on sedimentary facies heterogeneities. Available basin modeling
programs lack built-in sedimentary infill
modeling
capabilities to populate heterogeneities within the traditional “layer-cake”
modeling
framework where source, reservoir, and seal units are commonly represented as discrete and homogeneous layers. To address such a challenge, and to model both conventional and unconventional petroleum systems holistically in a single simulation, we coupled stratigraphic forward
modeling
with basin
modeling
, where the former provides a detailed three-dimensional sedimentary facies volume with finer-scale heterogeneities effectively captured as input for the latter. The forward stratigraphic model we used in our study is a hydrodynamics-based program, which is able to model clastic, carbonate, and organic deposition with spatial resolutions from centimeters to meters vertically and hundreds of meters to tens of kilometers horizontally.
The Triassic tight (sandstone) oil plays and the upper Paleozoic tight (sandstone) gas plays from the Ordos Basin, central China, were modeled using the integrated approach. Compared to the conventional layer-cake models, the coupled stratigraphic forward modeling
and basin
modeling
produced much more realistic results in terms of the quantity of petroleum accumulation and their spatial distributions.
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