LH油田酸化解堵配方体系优选  

Optimization of Acidizing Plugging Removal Formula System in LH Oilfield

作　　者：杨雪[1] 曾勇 Yang Xue;Zeng Yong

机构地区：[1]荆州学院(原长江大学工程技术学院),湖北荆州434023 [2]川庆钻探长庆固井公司,陕西西安710000

出　　处：《化工设计通讯》2022年第3期43-46,共4页Chemical Engineering Design Communications

基　　金：湖北省教育厅科研项目(B2019366)。

摘　　要：针对LH油田致密砂岩油藏储层受污染严重、前期开发产能低等问题,开展了储层酸液体系优选研究。前期分析了储层敏感性,确定采用氟硼酸HBF;替代常规HF酸并进行储层适应性评价,优选了10%HCl+15%改性硅酸+10%HBF;的主体酸液体系;针对酸液体系进行岩心流动实验测试酸化解堵效果,结果显示氟硼酸HBF;有效清除储层污染,改善渗透率;通过高温缓蚀剂优选实验优选了LAW高温缓蚀剂,完善了酸液体系配方并进行现场酸化应用。现场酸化结果表明,该酸液体系能有效清除储层伤害,提高油井产能。In response to the problems of serious contamination and low development capacity of the tight sandstone reservoir in LH Oilfield,a study on reservoir acid system selection was carried out.The main acid system of “10% HCl+15% modified silicic acid+10% HBF;” was selected;the acid system was tested in core flow experiments to determine the effect of acid decontamination,and the results showed that the fluoroboric acid HBF;effectively removes reservoir contamination and improves permeability;finally,high temperature corrosion inhibitor selection experiments were conducted to select LAW high temperature corrosion inhibitor,and the acid system formulation was improved and applied to field acidizing.The field acidizing results showed that the acid system can effectively remove formation damage and improve well productivity.

关 键 词：砂岩油藏 酸化解堵 氟硼酸 酸液体系 

分 类 号：TE357[石油与天然气工程—油气田开发工程]