Study on the Classification and Modeling of Fracture-Vug Oil Deposits

doi:10.11885/j.issn.1674-5086.2016.07.21.03

Abstract

Abstract: To characterize the various types, scale differences, and spatial distribution features of fracture-vug carbonate reservoir systems, we used the "classifying, categorizing, karst-facies control, multi-type integration" method and modeled the respective scales, external morphology, and internal attributes of various types of fracture-vug reservoir systems. Based on the karst origin integration principle, we integrated various types of fracture-vug reservoir systems and verified the model reliability through well drilling. The results show that this method is suitable for the geological modeling of such highly heterogenous reservoirs and can effectively characterize various reservoir systems and the spatial distribution of their parameters. Based on the model, the reserve composition of unit XX was refined; the karst cave reserves made up 63.1%, the dissolved pore reserves accounted for 34.5%, and large-scale fracture reserves accounted for 2.4% of the unit. The model simulation of oil deposit numerical values obtained better fit and simulation results.

Key words: carbonate rock reservoir, fracture-vug reservoir system, modeling, model integration, numerical simulation

CLC Number:

TE122

LÜ Xinrui, HAN Dong, LI Hongkai. Study on the Classification and Modeling of Fracture-Vug Oil Deposits[J]. 西南石油大学学报(自然科学版), 2018, 40(1): 68-77.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2016.07.21.03

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