Modeling method and modeling system for reef type reservoir body

Abstract

The invention discloses a modeling method and a modeling system for a reef type reservoir body. The method comprises the steps of based on seismic data, recognizing the reef type reservoir body development layer section of a single well, and determining the reef type reservoir body development layer section; based on the reef type reservoir body development layer section, obtaining a reef type reservoir body deposition microfacies plane distribution diagram; based on the reef type reservoir body development layer section and a vertical evolution sequence, obtaining a reef type reservoir body reservoir development mode, and establishing a reef type reservoir body configuration database; based on the reef type reservoir body deposition microfacies plane distribution diagram and a seismic inversion data body, obtaining a reef type reservoir body distribution probability body through combining geological stratification and seismic interpretation levels; and based on the reef type reservoirbody configuration database, the reef type reservoir body reservoir development mode and the reef type reservoir body distribution probability body, establishing a reef type reservoir body three-dimensional geological model. According to the invention, by reinforcing the geological mode and the regular constraint, the high-precision reef type reservoir body modeling is realized.

Description

technical field [0001] The invention relates to the technical field of oil and gas geophysics, and more specifically, to a method and system for modeling reef-shoal type reservoirs. Background technique [0002] In the field of oil and gas geophysics, the existing relatively mature modeling methods are mainly suitable for clastic rock reservoirs and porous carbonate rock reservoirs controlled by sedimentation, and there is a lack of reservoir configuration analysis in the modeling process Constrained by the law of distribution and distribution, the fine description of the internal structure and boundary of reef-beach reservoirs has not been realized, which is quite different from the geological reality, and even does not conform to geological laws; at the same time, the internal reservoirs of reef-beach reservoirs have not been accurately characterized The heterogeneity feature cannot meet the accuracy requirements of 3D geological modeling of reef-shoal reservoirs. [0003...

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Problems solved by technology

[0002] In the field of oil and gas geophysics, the existing relatively mature modeling methods are mainly suitable for clastic rock reservoirs and porous carbonate rock reservoirs controlled by sedimentation, and there is a lack of reservoir configuration analysis in the modeling process Constrained by the law of distribution and distribution, the fine description of the internal structure and boundary of reef-beach reservoirs has not been realized, which is quite different from the geological reality, and even does not conform to geological laws; at the same time, the internal reservoirs of reef-beach reservoirs have not been accurately characterized Heterogeneity characteristics cannot meet the accuracy requirements of 3D geological modeling of reef-shoal reservoirs

[0003] The inventors found that the geological modeling method for reef-shoal reservoirs with primary pores and secondary pores formed by both sedimentation and diagenesis as the main storage space is still in the exploratory stage, and there is no such method at home and abroad. Geological modeling methods and technologies that can integrate geological understanding and geophysical information to finely describe the internal heterogeneity and reservoir architecture of reef-shoal reservoirs

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