摘要
针对致密油气藏的特点，研制了新型低分子纤维素压裂液体系。实验表明，该压裂液体系具有配制简单、快速溶解、基液无“鱼眼”、携砂能力强、破胶彻底、无残渣，岩心伤害率仅为8．59％。新型压裂液在致密油气储层现场应用16井次，压后平均日产油是邻井产量的2～5倍，应用新型纤维素压裂液体系的气井产量约为瓜尔胶压裂液体系井的3～8倍，为致密油气藏的高效开发提供有效通道。
According to characteristics of tight reservoirs, we have studied on a New low-molecular- weight cellulose fracturing fluid. The experiments showed that the new cellulose fracturing fluid sys- tem with no residue had some characteristics, including simply preparation, instant dissolving, base fluid without ＂fish eye＂, high carrying capacity, gel breaking thoroughly, no residue, etc. The new fracturing fluid has been applied in 16 wells of tight oil and gas reservoirs. The average daily oil pro- duction is of 2 - 5 times comparing with adjacent wells after fracturing. The average daily gas produc- tion is of 3 -8 times comparing with adjacent wells after fracturing. The new technology provides an effective channel for efficient development of tight reservoirs
出处
《精细石油化工》
CAS
CSCD
北大核心
2016年第5期15-18,共4页
Speciality Petrochemicals
基金
国家863项目(2013AA064800)
国家科技重大专项"低渗特低渗油气储层高效改造技术"(2011ZX05013-003)
中国石油股份公司课题"特低
超低渗油藏高效改造技术"(2011B-1202)
关键词
改性纤维素
低分子
无残渣
致密油气藏
modified cellulose
low molecular
no residue
tight oil and gas reservoirs
