摘要
为提高多轮次蒸汽吞吐后期的油井产能和油田采收率,采用油藏工程方法和数值模拟法,总结了油田多轮次蒸汽吞吐的生产特征,并结合油藏特征开展了蒸汽吞吐接替方案研究。结果表明,蒸汽吞吐第1轮次的高峰产量和平均产量为冷采的2倍,油汽比为3.0,多周期间递减率平均为19.0%。与常规蒸汽吞吐相比,“化学药剂+气体辅助”增效可使采收率提高0.4%;侧钻吞吐可使采收率提高0.9%;蒸汽吞吐转蒸汽驱可使采收率提高8.7%;“化学增效+转蒸汽驱”可使采收率提高9.0%。
In order to improve the oil well productivity and oil field recovery rate in the later stage of multi-cycle steam stimulation,reservoir engineering methods and numerical simulation methods are used to summarize the production characteristics of multi cycle steam stimulation.Combined with the geological reservoir characteristics of the oilfield,a steam stimulation replacement plan is studied.The results show that the peak and average production of steam stimulation in the first cycle are twice those of the cold production,and the oil to gas ratio was 3.0,and the average decline rate among multiple cycles was 19.0%.Compared to the conventional steam stimulation,the enhancement through the combination of chemical agents and gas assistance can increase recovery ratio by 0.4%,lateral drilling stimulation can increase recovery ratio by 0.9%,steam stimulation transferring to steam drive can increase recovery ratio by 8.7%,and the combination of chemical enhancement and steam drive can increase recovery ratio by 9.0%.
作者
黄琴
桑丹
张俊
房娜
朱琴
HUANG Qin;SANG Dan;ZHANG Jun;Fang Na;ZHU Qin(National Key Laboratory of Offshore Oil and Gas Exploitation,Beijing 102209,China;Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300452,China;Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China)
出处
《重庆科技大学学报（自然科学版）》
CAS
2024年第5期9-16,共8页
Journal of Chongqing University of Science and Technology(Natural Sciences Edition)
基金
中国海洋石油集团公司“十四五”重大科技项目“海上复杂稠油油藏蒸汽驱技术研究”(KJGG2022-0603)。
关键词
多轮次蒸汽吞吐
辅助增效
侧钻
蒸汽驱
提高采收率
multiple cyclic steam stimulation
assisted enhancement
lateral drilling
steam drive
increasing oil recovery
