Technical Strategy for Fine Geological Modeling in Later Development Stage of Complex Fault-block Oilfield

doi:10.11885/j.issn.1674-5086.2013.12.08.03

Abstract

Abstract:

To produce the remaining oil in the late secondary development of complex fault block old oilfields，we need an
accurate understanding of three-dimensional spatial distribution of reservoir，fine prediction of property parameters of reservoir，
therefore the study on fine geological modeling techniques is carried out. The step controlling and modeling approach
effectively solves structure modeling difficulties on many complex multi-block faults，complicated configuration relationships，
and many thin multi-layers of sand. SKUA′s geological grid system is used to avoid modeling mesh deformation，collapse and
instability etc. Meanwhile multi-conditional control and nested constraint property modeling are taken to ensure excellent correlation
between physical parameters. And a model with 30.0 m×30.0 m×0.5 m is established to accurately represent reservoir
heterogeneity based on GPU acceleration，multi-core parallel computing techniques，and particular attention is focused on key
single sand layers analysis. This paper takes fault two of Area V in Gangxi Oilfield as an example，and the above technical
strategies are used for three-dimensional geological modeling in the area to achieve a fine three-dimensional visualization of
reservoir，and improve the prediction accuracy of reservoir parameters. It provides a scientific and reliable geological model
for the subsequent fine numerical simulation in predicting residual oil.

Key words: complex fault-block, modeling strategies, geological grid system, refined model, Gangxi Oilfield

Zou Tuo1*, Xu Fang2. Technical Strategy for Fine Geological Modeling in Later Development Stage of Complex Fault-block Oilfield[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.12.08.03.

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