长庆西峰油田潜在酸综合解堵体系CQX的构建及性能评价  

Construction and Performance Evaluation of Potential Acid Comprehensive Plugging-Removal System CQX Used in Changqing Xifeng Oilfield

作　　者：廖乐军 刘永峰 白茹 陈亚联 白田民 王雄 王松[2] LIAO Lejun;LIU Yongfeng;BAI Ru;CHEN Yalian;BAI Tianmin;WANG Xiong;WANG Song(Xianyang Chuanqing Xinyuan Engineering Technology Co.,Ltd.,Xianyang 712000,China;College of Chemistry&Environmental Engineering,Yangtze University,Jingzhou 434023,China)

机构地区：[1]咸阳川庆鑫源工程技术有限公司,陕西咸阳712000 [2]长江大学化学与环境工程学院,湖北荆州434023

出　　处：《化学与生物工程》2025年第2期55-58,共4页Chemistry & Bioengineering

基　　金：国家科技重大专项(2017ZX05049-003)。

摘　　要：在分析长庆西峰油田采出水和垢样的基础上,构建了一套适用于长庆西峰油田的潜在酸综合解堵体系CQX,并对其性能进行了评价。结果表明,解堵体系CQX的基本配方为:淡水+5%~10%潜在酸HWS-Ⅱ+1%~2%防膨剂HCS+3%~4%缓蚀剂CDH-Ⅰ+1%~2%助排剂HAS;解堵体系CQX对现场垢样的溶蚀率达到85.58%,防膨率为86.4%,对金属的平均腐蚀速率为2.74 g·m^(-2)·h^(-1),氟化钙抑制率为79.74%,氢氧化铁抑制率为95.26%;解堵体系CQX与地层水的配伍性良好,助排能力强,解堵后岩心渗透率恢复值为解堵前的1.3倍以上;解堵体系CQX能有效清除近井地带堵塞,深层疏通扩大渗流孔道,增产效果明显。Based on the analyses of produced water and scale samples in Changqing Xifeng Oilfield in Gansu Province of China,we constructed a potential acid comprehensive plugging-removal system CQX suitable for Changqing Xifeng Oilfield,and evaluated its performance.The results show that the basic formula of the plugging-removal system CQX is as follows:freshwater+5%-10%potential acid HWS-Ⅱ+1%-2%anti-swelling agent HCS+3%-4%corrosion inhibitor CDH-Ⅰ+1%-2%cleanup agent HAS.After using the plugging-removal system CQX,the corrosion rate of on-site scale samples reaches 85.58%,the anti-swelling rate is 86.4%,the average corrosion rate of metals is 2.74 g·m^(-2)·h^(-1),the inhibition rate of calcium fluoride is 79.74%,and the inhibition rate of iron hydroxide is 95.26%.The compatibility between the plugging-removal system CQX and formation water is good,with strong cleanup ability.The recovery value of core permeability after plugging-removal is more than 1.3 times that before plugging-removal.The plugging-removal system CQX can effectively remove blockages near the well,dredge and expand seepage channels in deep layers,and significantly increase production.

关 键 词：地层堵塞 解堵液 除垢 渗透率改善 

分 类 号：TE355[石油与天然气工程—油气田开发工程]