深层/超深层冻胶压裂液体系研究进展及展望  

Progress and prospect of fracturing fluid system for deep/ultra-deep reservoir reconstruction

作　　者：戴彩丽[1,2] 黄永平 刘长龙 吴一宁 邹辰炜[1,2] 晏翔 刘其鑫 曹梦娇 DAI Caili;HUANG Yongping;LIU Changlong;WU Yining;ZOU Chenwei;YAN Xiang;LIU Qixin;CAO Mengjiao(School of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China;Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)),Ministry of Education,Qingdao 266580,China;Tianjin Branch of CNOOC Limited,Tianjin 300459,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中国石油大学(华东)非常规油气开发教育部重点实验室,山东青岛266580 [3]中国海石油(中国)有限公司天津分公司,天津300459

出　　处：《中国石油大学学报（自然科学版）》2023年第4期77-92,共16页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金重点国际(地区)合作研究项目(52120105007);国家自然科学基金重点项目(51834010);中国石油大学(华东)研究生创新基金项目(23CX04047A)。

摘　　要：深层/超深层油气藏是中国油气稳产/上产的重要领域,具有埋藏深、纳微孔喉发育等特点,常规完井方式可动用油气储量范围小、产能低。通过水平井体积压裂形成复杂缝网,沟通远井油气,提高单井产量是实现其高效开发的重要手段。不同于常规油气藏,深层/超深层油气藏超深及超高温的特点对压裂液性能提出更高的挑战。深层/超深层冻胶压裂液主要成分为稠化剂和交联剂,并适当添加破胶剂、加重剂等助剂以满足现场施工对压裂液性能的要求。对深层/超深层储层改造冻胶压裂液体系进行梳理,综合分析现有冻胶压裂液体系的研究进展,并对其技术发展趋势进行展望,未来在满足耐高温基础上,低成本、低伤害、低摩阻是深层/超深层压裂液进一步发展的方向。Deep/ultra-deep hydrocarbon reservoirs are important areas for stable/high production of oil and gas in China,which shows the characteristics of the deep burial and the development of nano-pore throat.Hence,the conventional well completion method has a small range of available oil and gas reserves and low productivity.Through volume fracturing of horizontal wells,the formation of complex fracture network,the communication of oil and gas in distant wells,and the increase of single well production are the main means to achieve efficient development.Different from conventional reservoirs,the ultra-deep and ultra-high temperature characteristics of deep/ultra-deep reservoirs pose a higher challenge to fracturing fluid performance.The main components of the deep/ultra-deep gel fracturing fluid are thickener and cross-linking agent,and supplemented with appropriate additives,such as glue breaker and weighting agent,to meet the requirements of field construction on fracturing fluid performance.The current fracturing fluid system for deep/ultra-deep reservoir reconstruction is sorted out,the research progress of the existing gel fracturing fluid system are comprehensively analyzed,and the development trend of its future technology is prospected.On the basis of high gemperature resistance,low cost,low damage and low friction are the further development direction of deep/ultra-deep fracturing fluids.

关 键 词：深层/超深层 超高温 压裂液 稠化剂 延迟交联剂 加重剂 

分 类 号：TE357[石油与天然气工程—油气田开发工程]