摘要
我国致密油藏大都采用水平井多级压裂技术进行开发,初期产能较高但产量递减快,亟须补充油藏能量。CO_2吞吐是一种经济有效的增油措施,为致密油藏长期稳定开发提供了新思路。以L致密油藏G油层为例,建立多级压裂水平井单井吞吐模型,用数值模拟的方法研究周期注入量、注入速度、焖井时间等对吞吐开发效果的影响。研究结果表明,在合理吞吐参数下,L致密油藏多级压裂水平井可以获得较好的开发效果。
Horizontal well combined with multi-stage fracturing technology was used for developing tight oil reservoirs in China now,and the initial production was high but declines rapidly,and it was urgent to replenish the reservoir energy.CO2 huff and puff was an economic and effective method to increase oil production,which provided a new idea for long-term stable development of tight reservoirs.Taking G layer in L tight oil reservoir as an example,establishing a single well CO2 huff and puff model,using numerical simulation technology to quantify the impacts of operation parameters such as the periodic injection volume,injection rate,soaking time and so on.The research showed that under the reasonable huff-n-puff operational parameters,the multi-stage fracturing horizontal well can obtain a better development effect.
作者
段炼
马妮莎
李鼎一
Duan Lian;Ma Nisha;Li Dingyi(Key Laboratory of Petroleum Engineering of the Ministry of Education,China University of Petroleum,Beijing 102249,China;Institute of Improve Recovery Research,China University of Petroleum,Beijing 102249,China)
出处
《能源与环保》
2018年第3期77-80,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
致密油藏
C02吞吐
数值模拟
多级压裂水平井
tight oil reservoirs
CO2 huff-n-puff
numerical simulation
multi-stage fracturing horizontal well
