摘要
CO_(2)驱油注气管柱是CO_(2)进入地层的通道,是保证CO_(2)驱油能够成功完成的重要因素之一,苏北油田在充分借鉴调研的基础上,设计、研制了四种CO_(2)驱油注气管柱。对苏北油田使用的4种CO_(2)驱油注气管柱及配套工艺进行了适应性分析,从气密封性、可靠性和经济性等方面进行了对比研究,并对其应用效果进行评价。分析认为,现有的CO_(2)驱油注气工艺可以满足苏北油田大规模注气需求,并取得了一定的增产效果。但在实际矿场试验中发现现有CO_(2)驱油注气工艺还存在一些局限和不足之处,为此提出了对目前CO_(2)驱油注气管柱进行改进完善、扩大应用气密封检测技术、深化CO_(2)驱油注气井油套管脆断机理研究和加强CO_(2)驱油分层注气技术攻关等下步研究建议。
As the channel for CO_(2)to enter formation,the gas injection string is one of the important factors to ensure the successful completion of CO_(2)flooding.On the basis of learning from the experience of others and making sufficient investigation,four kinds of gas injection strings for CO_(2)flooding were designed and developed in Subei Oilfield.This paper analyzes the adaptability of all these strings,makes a comparative study on gas tightness,reliability and cost-effectiveness,and evaluates their application effects.Accord-ing to the analysis,existing CO_(2)injection technology can meet the demand for large-scale gas injection in Subei Oilfield,and has achieved some increase in production.However,it is found in the practical field testing that existing CO_(2)injection technology still has some limitations and shortcomings.Therefore,such recommendations as improving the current CO_(2)injection string,promoting the ap-plication of gas tightness testing technology,deepening the study on the brittle fracture mechanism of injection well tubing and casing,and paying more efforts in achieving breakthrough in the technology of separate-layer gas injection are put forward for future study.
作者
曹力元
钱卫明
宫平
关士洁
段瑜涛
何园
CAO Liyuan;QIAN Weiming;GONG Ping;GUAN Shijie;DUAN Yutao;HE Yuan(Sinopec East China Oil&Gas Company,Taizhou 225300,Jiangsu,China;Research Institute of Engineering Technology,Petro�China Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China)
出处
《新疆石油天然气》
CAS
2022年第2期46-50,共5页
Xinjiang Oil & Gas
基金
中石化股份公司科技攻关项目“苏北低渗透油藏CO_(2)驱注采配套工艺技术应用研究”(P16074)。
