Abstract:

The key to improve the precision of reservoir modeling lies in the use of facies-controlled modeling with geological constraints.Based on case study on one oilfield in Daqing, the specific research way of facies-controlled modeling is carried out by integrating constraint conditions of sedimentary facies sequence, quantitative geological knowledge base sedimentary micro-facies probability and variation function, sedimentary micro-facies model is built according to the principle of ‘grade control and level constraint’. Under the control of sedimentary micro-facies model, porosity and permeability reservoir parameter models are established. Based on this and combining production dynamic data and stable 3D geological model, the remaining oil distribution, which has been evaluated by integrated structural, reservoir, fluid and dynamic production information, can be restrained by the result of reservoir modeling.

Key words: geological constraint, faciescontrolled modeling, remaining oil distribution

摘要：

提高储层建模精度的关键在于采用地质约束的相控建模思路。本文以大庆某油田为例，提出相控储层建模具体研究思路：通过整合沉积相序、定量地质知识库、沉积微相概率以及变差函数等约束条件，按照“分级控制、层次约束”的原则建立沉积微相模型；在沉积微相模型的控制下，完成孔隙度、渗透率等储层参数模型。在此基础上，将静态的三维地质模型与动态生产资料相结合，通过整合构造、储层、流体以及动态生产信息，对剩余油分布规律进行综合评价与预测，使储层建模的结果对剩余油分布的评价起到约束作用。

关键词: 地质约束, 相控建模, 剩余油分布