胶凝酸体系在印尼Rama油田的应用  

Application of gelled acid system in Rama oilfield of Indonesia

作　　者：王震[1] 杨永庆[1] 张嘉兴 WANG Zhen;YANG Yongqing;ZHANG Jiaxing(China Oilfield Services Ltd,Tanggu,Tianjin 300450,China)

机构地区：[1]中海油田服务股份有限公司,天津塘沽300450

出　　处：《石油地质与工程》2021年第4期123-126,共4页Petroleum Geology and Engineering

摘　　要：印尼海上Rama油田历经40余年开发生产,目前属于典型的低压、非均质性强碳酸盐岩油藏,且多年来的酸化增产措施使得近井地带过度溶蚀,常规酸液体系酸化有效期越来越差。针对Rama油田油藏特征,研发出一种CRACS胶凝酸体系,通过实验证明该体系具有良好的缓速性、耐温耐剪切性、低残余黏度、低摩阻及缓蚀性能。现场应用表明,胶凝酸体系可进入深部储层形成窄而长的酸蚀蚓孔,达到更好的增产效果;针对长井段酸化,结合泡沫酸工艺,可以达到更好的分流效果。After more than 40 years of development and production,Rama oilfield in Indonesia offshore is a typical low-pressure and heterogeneous carbonate reservoir.Over the years,acidizing stimulation measures have caused excessive corrosion near the well zone,and the effective period of conventional acidizing fluid system is getting worse and worse.According to the reservoir characteristics of Rama oilfield,a kind of CRACS gelling acid system was developed.Experiments show that the system has good speed inhibition,temperature resistance,shear resistance,low residual viscosity,low friction and corrosion inhibition performance.The field application shows that the gelling acid system can enter deep reservoir to form narrow and long acid wormhole and achieve better stimulation effect.In view of long interval acidification,combined with foam acid technology,better shunting effect can be achieved.

关 键 词：碳酸盐岩 CRACS胶凝酸体系 低压油藏 印尼Rama油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]