延长油田CO_2驱埋存潜力评价方法  

CO_2 Displacement Geological Storage Potential Evaluation of Yanchang Oilfield

作　　者：姚振杰 黄春霞 段景杰 余华贵 陈龙龙 Yao Zhenjie Huang Chunxia Duan Jingjie Yu Huagui Chen Longlong(Institute of Shaanxi Yanchan g Petroleum （Group） Co. ,Ltd., Xi ＇an Shaanxi 710075, China)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075

出　　处：《辽宁石油化工大学学报》2016年第3期43-45,共3页Journal of Liaoning Petrochemical University

基　　金：国家科技支撑项目"陕北煤化工CO2捕集;埋存与提高采收率技术示范"(2012BAC26B00)

摘　　要：目前,油藏已经成为CO_2埋存的重要场所,向油藏注入CO_2的同时可以提高原油采收率。根据延长油田靖边CO_2试验区储层物性特征,利用构造地层埋存、束缚埋存、溶解埋存及矿化埋存等机理,考虑CO_2在原油中溶解、CO_2在地层水中溶解及自由气的埋存,建立评价CO_2埋存量的模型,通过所建立的模型可以评价延长油田靖边CO_2试验区埋存潜力。模型应用结果表明,靖边CO_2试验区CO_2埋存量可达209.879×104 t,储层CO_2埋存量大,具有非常好的埋存潜力,为延长油田进行CO_2驱提供了重要的指导。Oil reservoir has become an important way for CO2 storage, while the injection of CO2 to reservoir can also improve the oil recovery. According to Yanchang oilfield reservoir characteristics, an evaluation model for CO2 storage was established using the formation storage, bound storage, dissolved storage and mineralization mechanism. The model was established under the consideration of CO2 dissolution in the oil, CO2 dissolution in formation water and free gas storage. The model was used to evaluate the CO2 storage potential for Yanchang oilfield. The results show that the model can predict reservoir storage capacity, and the reservoir CO2 storage stock is about 209.879 × 104 t. The reservoir shows very good storage potential, which can provide important basis for CO2 displacement of Yanchang oilfield.

关 键 词：CO2 延长油田 埋存潜力 评价模型 

分 类 号：TE357[石油与天然气工程—油气田开发工程]