大庆石油地质与开发2026，Vol.45Issue(4)：80-87,8.DOI:10.19597/J.ISSN.1000-3754.202504073
松辽盆地头台油田油热协同开发注采参数优化
Optimization of injection-production parameters for oil-geothermal synergistic development in Toutai Oilfield of Songliao Basin
摘要
Abstract
In the context of global low-carbon energy transition,the resource utilization of residual heat in reservoirs has become a crucial direction for sustainable oilfield development.Taking Block T of Toutai Oilfield in Songliao Basin as the research object,study on the technical and economic feasibility of converting low-efficiency oil produc-ers into geothermal wells is conducted.A coupled thermal recovery model for reservoirs is established based on the CMG-STARS platform to quantitatively analyze the effects of water injection temperature,injection-production flow rate and production timing on heat extraction performance.The results show that,sidetracking and fracturing fol-lowed by"oil production first,then geothermal conversion"development maximizes the benefits of low-productivity oil wells.Simulation prediction indicates that the optimal timing for converting to geothermal development is when oil production declines to 1.3 t/d after 4 years of oil production.Under the same injection rate,increasing injection temperature from 5℃ to 20℃ reduces the produced water temperature difference,with cumulative heat extraction decreased by 16％.However,at the same temperature,when the injection flow rate increases from 300 m³/d to 1440 m³/d,heat production doubles,while the produced fluid temperature decreases by 11.5℃.The optimal injec-tion-production scheme is recommended to be an injection temperature of 20℃ and a water injection rate of 480 m³/d,achieving a 10-year cumulative heat extraction of 420 TJ,which meets the heating requirement of the joint sta-tion.In the 5th year of thermal recovery,heat loss rate exceeds the critical value of 10％,formation temperature re-covery reaches a peak of 9.42℃,and thermal regeneration efficiency systematically declines thereafter,forming a thermal modification zone with a radius of 35 m.The research provides a theoretical basis for the implementation of"oil-geothermal co-production"project in oilfields and has promotion value for low-carbon utilization of unconven-tional resources.关键词
低效井改造/油热同采/地热开发/数值模拟/参数优化Key words
low-productivity well reformation/oil-geothermal co-production/geothermal development/numerical simulation/parameter optimization分类
天文与地球科学引用本文复制引用
曲方春,王青振,黄凌月,佟斯琴,陈春瑞..松辽盆地头台油田油热协同开发注采参数优化[J].大庆石油地质与开发,2026,45(4):80-87,8.基金项目
中国石油天然气股份有限公司重大科技专项"东部油区地热资源潜力评价"(2016A-4802(GF)). （2016A-4802(GF）
