摘要
形成具有一定渗流能力的支撑裂缝是水力压裂实现高效改造的重要前提,在压裂的不同阶段往往会加入不同粒径的支撑剂,目前对多种支撑剂混合后导流能力变化规律研究尚不系统和深入。因此,通过对20/40、30/50、40/70目陶粒及其不同组合下导流能力开展了实验评价,并通过导流能力保留率这一参数对其变化规律进行分析。结果表明:支撑剂导流能力与支撑剂粒径成正相关的关系;不同粒径支撑剂组合的导流能力介于该组合的最大最小两种支撑剂的导流能力区间之内;支撑剂组合的导流能力值更接近于占比更高的支撑剂;当支撑剂粒径差别大时,会导致导流能力变低、导流能力保留率较低且受闭合压力的影响大。研究成果得到了不同粒径支撑剂组合下导流能力的变化规律,为现场压裂施工中支撑剂优选及压裂效果预测提供了重要的指导。
The formation of supporting fractures with certain seepage capacity is an important prerequisite for the efficient transformation of hydraulic fracturing.Proppants with different particle sizes are often added in different stages of fracturing.At present,the research on the change law of conductivity after mixing a variety of proppants is not systematic and in-depth.Therefore,in this paper,the conductivity of 20/40,30/50,40/70 mesh ceramsite and their different combinations were experimentally evaluated,and the variation law was analyzed by the parameter of conductivity retention.The experimental results showed that the conductivity of proppant was positively correlated with the particle size of proppant;The conductivity of proppant combinations with different particle sizes was within the conductivity range of the largest and smallest proppants of the combination;The conductivity value of proppant combination was closer to that of proppant with higher proportion;When the particle size difference of proppant was large,it could lead to low conductivity,low retention of conductivity and be greatly affected by closing pressure.The research results of the variation law of conductivity under different particle size proppant combinations can provide important guidance for proppant optimization and fracturing effect prediction in field fracturing construction.
作者
陈庆栋
周际永
陈维余
高双
宋爱莉
张宸
安恒序
CHEN Qing-dong;ZHOU Ji-yong;CHEN Wei-yu;GAO Shuang;SONG Ai-li;ZHANG Chen;AN Heng-xv(CNOOC EnerTech-Drilling&Production Co.,Tingjin 300452,China)
出处
《辽宁化工》
CAS
2022年第5期593-595,共3页
Liaoning Chemical Industry
关键词
压裂
支撑剂组合
导流能力
变化规律
Fracture
Proppant combination
Diversion capacity
Change rule
作者简介
陈庆栋(1989-),男,安徽省宿州市人,工程师,硕士研究生,2015年毕业于中国石油大学(华东)油气田开发专业,研究方向:油气藏增产措施技术。
