延长油田CO2 驱埋存潜力评价方法

CO2 Displacement Geological Storage Potential Evaluation of Yanchang Oilfield

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

(陕西延长石油(集团)有限责任公司研究院,陕西西安710075)

Institute of Shaanxi Yanchang Petroleum (Group) Co.，Ltd.，Xi’an Shaanxi 710075, China

关键词: CO2, 延长油田, 埋存潜力, 评价模型

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 209.879×104 t. The reservoir shows very good storage potential, which can provide important basis for CO2 displacement of Yanchang oilfield.

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)

10.3969/j.issn.1672-6952.2016.03.010