彭阳油田自生热增能压裂技术  

Application of authigenic heat energized fracturing technology in Pengyang Oilfield

作　　者：王成旺[1,2] 刘晓庆 陈文斌 李昌恒[1,2] 王广涛 WANG Chengwang;LIU Xiaoqing;CHEN Wenbin;LI Changheng;WANG Guangtao(Oil and Gas Technology Research Institute of Changqing Oilfield Company,Xi′an,Shaanxi 710018,China;National Engineering Laboratory of Low Permeability Oil and Gas Field,Xi′an,Shaanxi 710018,China)

机构地区：[1]中国石油长庆油田分公司油气工艺研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《油气井测试》2022年第6期27-33,共7页Well Testing

摘　　要：彭阳油田长8油层存在储层冷伤害,伤害率达70%以上,导致试油产量和试油成功率低。研发自生热增能压裂液体系,在地层中可升温至70℃以上,减少储层冷伤害,降低原油黏度,并可生成大量气体,形成泡沫,降低压裂液滤失,增加储层能量。经现场6口井试验,试油产量由3.5t/d提升至17.2t/d,试油成功率由21.7%提高至83.3%。该技术可为同类油藏的高效动用提供技术支持。The Chang 8 oil reservoir in Pengyang Oilfield suffers from cold damage,with the damage rate of over 70%,resulting in low production and low success in oil testing.An authigenic heat energized fracturing fluid system has been developed.It can heat up to above 70℃in the formation,so as to mitigate the cold damage to reservoir and reduce the viscosity of crude oil.It can also generate a large amount of gas and form foam to reduce the filtration of fracturing fluid and increase the reservoir energy.Field tests of the system in 6 wells reveal that the production increased from 3.5 t/d to 17.2 t/d,and the success rate increased from 21.7%to 83.3%.This technology can provide a support for efficient production of similar oil reservoirs.

关 键 词：彭阳油田 低渗透储层 自生热压裂液 冷伤害 膨胀增压 超支化聚合物 耐酸交联 现场试验 

分 类 号：TE357[石油与天然气工程—油气田开发工程]