摘要
针对聚合物压裂液所用金属化合物交联剂易引起地层二次伤害及与其他添加剂配伍性较差的问题,用工业原料研制了一种具有粘土防膨功能的有机交联剂(YJ),考察了YJ与某聚合物增稠剂(A-1)所形成冻胶的交联、耐温、破胶及防膨等性能,并用扫描电镜分析了冻胶的微结构。结果表明,YJ和A-1在质量浓度比1∶1、pH值7时可形成最高粘度的冻胶,并于25℃、2 h内可用常规破胶剂完全破胶;1%YJ的防膨率在2 h接近70%、16 h为54%;冻胶在30℃附近出现粘度最大、之后粘度随温度升高而减小;冻胶体系具有层状空间网络结构的特征。
For crosslinking agents,metallic compounds in synthesized polymer fracturing fluids result in the secondary formation damage and are not compatible with other additives,a organic compound(YJ) with the function of clay stabilizer and crosslinking agent and its gel microstructure with a polymer thickener (A-1) are studied in this paper.It is shown that the gel is formed under the condition of pH7 and the matching mass concentration{ρ (A-1) :ρ (YJ) = 1:1}with the maximum viscosity and can be broken by ordinary breakers in 2 h at 25 ℃,and that the viscosity reduces with the temperature going up but is maximum at 30 ℃,and that the antiswelling rate of 1%YJ is up to 70% in 2 h and close to 54% in 16 h,and that the gel system has a network structure of layer in space with the SEM.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期118-120,共3页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
压裂液
交联剂
防膨剂
增稠剂
性能
fracturing fluids
crosslinking agent
clay stabilizer
thickener
property
