摘要
针对常规堵调用聚合物冻胶类堵剂在高温高盐油藏中存在强度低、稳定性差、成胶时间短等问题,研制了一种由磺化栲胶、延缓交联剂和稳定剂组成的适用于高温高盐油藏的堵剂体系.通过室内静态评价实验,优化了130℃下配方：（4％～7％）磺化栲胶＋（1.8％～2.2％）交联剂ZY-1＋（1.8％～2.2％）交联剂ZY-2＋（1.5％ ～3.0％）稳定剂FY-1＋（0.04％～0.08％）稳定剂FY-2,该堵剂体系的成胶时间在9～14h可控,冻胶强度在0.06～0.08 MPa可调.实验结果表明,该堵剂在高温（130℃）高盐（矿化度大于2.0× 105 mg/L）条件下老化60 d后,体积保留率和强度保留率皆在90％以上,封堵率仍在92％以上,显示出较好的耐温抗盐性能和持续封堵能力.
In high temperature and high salinity reservoir,the polymer gel blocking agent has the problems of low strength,poor stability,short gelation time,etc.This paper presents a new blocking agent suitable for this reservoir,which is composed of such a formula as sulfonated tannin （4％～7％ in mass fraction）,ZY-1 crosslinking agent （1.8％～2.2％）,ZY-2 crosslinking agent （1.8％～2.2％）,FY-1 stabilizer （1.5％～3.0％） and FY-2 stabilizer （0.04％～0.08％）,at 130℃.The gelation time of it is 9～14 h,the gel strength is 0.06～0.08 MPa.The lab experiment indicates that this gel system has better heat resistance,salt tolerance and continuous plugging performances for its volume and strength retention reach over 90％,the plugging rate is still higher than 92％,after 60 days of ageing time in the condition of high temperature （130℃） and high salinity （over 2.0×105 mg/L）.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2014年第1期96-100,共5页
Xinjiang Petroleum Geology
基金
国家自然科学基金(51174221)
教育部新世纪优秀人才支持计划(20110226)
教育部博士学科专项科研基金(201201333110010)
关键词
磺化栲胶
高温高盐
堵剂
研制
性能评价
sulfonated tannin
high temperature
high salinity
blocking agent
development
quality evaluation
