海上低渗透气藏等饱和度面空间展布特征研究

Study on the Spatial Distribution Characteristics of Iso-Saturation Interface in Offshore Gas Reservoir with Low Permeability

田彬 盛志超 陈现 刘梦颖

TIAN Bin SHENG Zhichao CHEN Xian LIU Mengying

中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院, 上海 200120

Institute of Exploration and Development, SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

研究表明，低渗透气藏储层中的气水界面可能较高，并且随储层的平面非均质性呈现出高低起伏的现象。对于海上低渗透气藏，由于毛细管压力资料比较有限，因此采用常规的方法无法精确地刻画出气藏各个部位的气水分布关系。通过采用流动层标志参数方法，给出了利用储层物性预测低渗透气藏等饱和度面空间展布的新方法，并在此基础上对低渗气藏等饱和度面的空间分布特征进行了研究。最后，利用这一研究成果对我国某海域一气田的生产动态进行了分析，取得了较好的应用效果。

Studies have shown that the gas-water interface maybe relative high in the reservoirs with low permeability and exhibit the undulating distribution due to the lateral heterogeneity of reservoirs. As to the offshore gas reservoirs,it is hard to accurately describe the distribution of fluid by the conventional methods because the capillary pressure data available are limited. By adopting FZI, the article provides a new way to predict the distribution of fluid based on the reservoir physical property. It also makes a close study on the spatial distribution characteristics of iso-saturation interface. Finally, the study achievement was applied in a dynamic analysis referring to a gas reservoir in some sea area of China,and proved to be effective.

https://doi.org/10.3969/j.issn.1008-2336.2018.01.050