关键词: 油田开发后期, 相控, 建模, 地质约束, 分流, 河道, 沉积, 砂岩体

Abstract: Facies-controlled modeling facilitates great improvement of accuracy of reservoir model. Based on speeific characteristics of techniques and information from mature oilfield development, the research thought, method and key procedure of integrating depositional! microfacies modeling with facies controlled reservoir parameter prediction are proposed. A case study is made for low sinuosity of distributary channel sandbody. The result shows that compared with conventional reservoir parameter prediction, the facies-controlled model-ing has greatly promoted the conversion of geological concept to the model, bringing about more reliable and matched in-situ conditions.The study will be beneficial to employing the knowledge, experience and skill from a geologist, intensifying restriction in geology so as to better fit the practical conditions of domestic reservoir characterization for mature oilfield development. Meanwhile, integrating deposi-tional microfacies modeling with stochastic reservoir parameter prediction is advisable or recommended for further modeling practices.

Key words: mature oilfield development, facies- controll, modeling, geological constraining, distributary channel, deposition, sandbody