论文详情
多层稠油油藏水驱动用程度评价方法
断块油气田
2020年 27卷 第3期
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Title
Evaluation method of water driving degree of multi?鄄layer heavy oil reservoir
单位
中海石油（中国）有限公司天津分公司，天津 300459
中国石油大学（北京）石油工程学院，北京 102249
Organization
Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Abstract
Because of the start-up pressure gradient and the great difference of vertical reservoir physical properties in offshore multi-layer heavy oil reservoirs, the contradiction between layers is prominent, and the development effect is not ideal. Aiming at this problem, based on Buckley-Leverett theory, a water flooding model of multi-layer reservoir considering heavy oil start-up pressure gradient was derived, a dynamic evaluation method of fluid yield, seepage resistance and recovery degree under multi-layer combined production condition was established, and an application was carried out in the field. The results show that the dynamic difference of seepage resistance is an important factor leading to interlayer contradiction during combined production of multi-layer reservoirs; adopting separate production measures is more conducive to the balanced development of reservoirs. The research results have a guiding role for the subsequent high-efficiency development and adjustment of offshore multi-layer heavy oil reservoir.
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