Application of dual-media compound numerical well test technology in fractured reef limestone reservoirs with bottom water

doi:10.3969/j.issn.1006-6535.2020.05.015

Abstract

Abstract: In view of the poor coincidence between analytical well test results and geological and dynamic characteristics in Liuhua 11-1 Oilfield, the dual-media compound numerical well test technology for horizontal wells in fractured reservoirs with bottom water is formed by comprehensively considering geological model, production history, gravity, capillary force and relative permeability curve. Forty wells were selected from the overall pressure build-up test data for dual-media compound numerical well test interpretation. In this method, both bottom water energy and permeability difference between layers are considered. Combines with the existing geological knowledge; The numerical model interpretation results show that:the oilfield pressure build-up well test curves mainly have three flow characteristics: linear flow, bilinear flow and dual-porosity seepage. According to different types of wells, it is suggested that this well can be stimulated by increasing production pressure difference or stabilizing oil and controlling water. This study has a reference for the development of similar reservoirs,which provides references for prodution.

Key words: numerical well test, fracture, reservoir with bottom water, horizontal well, pressure build-up, reef limestone

CLC Number:

TE353

Yang Yong, Xie Ribin, Yan Zhenghe, Sun Changwei, Li Xiaodong. Application of dual-media compound numerical well test technology in fractured reef limestone reservoirs with bottom water[J]. Special Oil & Gas Reservoirs, 2020, 27(5): 100-105.

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