吸附型缓速酸体系的开发与应用

李泽锋; 王改红; 姬随波

doi:10.3969/j.issn.1001-5620.2019.01.022

吸附型缓速酸体系的开发与应用

doi: 10.3969/j.issn.1001-5620.2019.01.022

川庆钻探工程有限公司长庆井下技术作业公司, 西安 710021

基金项目:

国家科技重大专项“储层改造关键流体研发”（2017ZX05023-003-006）

详细信息

作者简介:
李泽锋,工程师,1989年生,主要从事储层改造液体研发及增产相关工作。电话(029)86021710;E-mail:cj_lizef@cnpc.com.cn

中图分类号: TE357.2
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- 被引次数: 0
出版历程
- 收稿日期: 2018-09-19
- 刊出日期: 2019-02-28

Development and Application of an Adsorptive Retarded Acid

Changqing Downhole Technology Operating Company, Chuanqing Drilling Engineering Limited Company, Shaanxi Xi'an 710021

摘要

摘要: 针对目前常规酸液体系反应速度快，有效作用距离短，刻蚀效果差等问题，研究了一种吸附型缓速酸体系。该体系通过缓速剂中阳离子疏水基团吸附在岩石表面，形成保护膜将酸液中H⁺隔离，延缓酸岩反应时间，提高酸蚀裂缝长度及非均匀刻蚀程度。进行了酸液、添加剂加量优化，得到缓速酸体系配方。性能评价结果表明，该体系缓速率为91.2%，缓蚀率为99.6%，缓速酸与岩石反应形成了较明显的沟槽且导流能力随闭合压力升高降幅较小，缓速效果明显。该体系在苏里格地区得以成功应用，单井产气量是相邻井产量的5倍左右，改造效果显著。
- 吸附 /
- 缓速酸 /
- 导流能力 /
- 储层改造
Abstract: Conventional acids for acidizing job have some disadvantages such as fast reaction, short effective functioning distance and poor erosion etc. To address these problems encountered in acidizing with conventional acids, an adsorptive retarded acid was developed, in which the hydrophobic cationic groups of the retarder are able to adsorb on the surfaces of formation rocks, forming a protective membrane to shut off the contact of H+ and the surfaces of the rocks, thereby retarding the reaction between acid and rocks, and increasing the length of acid-corroded fractures and the inhomogeneity of acid corrosion. A retarded acid formulation was developed based on the optimization acid concentration and the concentration of other additives. Evaluation of the performance of the retarded acid showed that the acid was retarded by 91.2% and the rate of corrosion was retarded by 99.6%. Reaction of the retarded acid and rocks produced clear ditches and trenches, and the flow conductivity of the ditches and trenches drops at a low magnitude as enclosure pressure is increasing, fully proving the retarding capacity of the retarded acid. This retarded acid has been successfully used in Sulige gas field, the daily gas production rate of an individual well was 5 times that of gas wells nearby.
- Adsorption /
- Retarded acid /
- Flow conductivity /
- Reservoir reformation

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参考文献(11)

[1]	陈赓良,黄瑛.碳酸盐岩酸化反应机理分析[J]. 天然气工业,2006,26(1):104-108. CHEN Gengliang,HUANG Ying.Mechanism analysis of acidification reaction of carbonate rocks[J].Natural Gas Industry, 2006,26(1):104-108.
[2]	王任芳,兰笛,李富强,等.新型缓速酸的研制[J]. 长江大学学报,2009,6(3):33-36. WANG Renfang,LAN Di,LI Fuqiang,et al. Development of new slow acid[J].Journal of Yangtze University,2009,6(3):33-36.
[3]	陈大均,陈馥.油田化学[M]. 北京:石油工业出版社, 2007:162-168. CHEN Dajun,CHEN Fu.Oil field chemistry[M]. Beijing:Petroleum Industry Press,2007:162 -168.
[4]	王旭,尹玉川. 表面活性剂缓速酸酸压实践[J]. 钻采工艺,2004,27(50):40-42. WANG Xu,YIN Yuchuan.Surface active agent slow acid pressure practice[J].Drilling & Poduction Technology, 2004,27(50):40-42.
[5]	刘炜, 熊楠, 吴志鹏,等.缓速酸种类及乳化酸应用研究进展[J]. 精细石油化工进展,2010,11(9):12-15. LIU Wei,XIONG Nan,WU Zhipeng,et al.Research progress in the application of slow-speed acids and emulsified acids[J]. Advances In Fine Petrochemical, 2010,11(9):12-15.
[6]	全红平, 吴洋, 李欢, 等.具有吸附作用的酸液缓速外加剂FL-1的研制[J]. 现代化工, 2015, 35(1):118-121. QUAN Hongping,WU Yang,LI Huan,et al. Development of the acid slow speed additive FL-1 with adsorption[J].Modern Chemical Industry,2015,35(1):118-121.
[7]	戴姗姗,蔡馨.一种疏水缔合型阳离子聚合物酸液稠化剂的合成及性能[J]. 精细化工,2013,30(5):575-579. DAI Shanshan,CAI Xin.Synthesis and properties of a hydrophobic connective cationic polymer acid thickener[J].Fine Chemical,2013,30(5):575-579.
[8]	吴洋,王金玉,郭帆,等. 阳离子聚合物型酸液缓速剂的合成与性能评价[J]. 广州化工,2018,38(1):102-106. WU Yang,WANG Jinyu,GUO Fan,et al.Synthesis and performance evaluation of cationic polymeric acid deficient[J].Guangzhou Chemical Industry,2018,38(1):102-106.
[9]	张学丰,刘波,蔡忠贤,等.白云岩化作用与碳酸盐岩储层物性[J]. 地质科技情报,2010,29(3):79-83. ZHANG Xuefeng,LIU Bo,CAI Zhongxian,et al. Baiyun lithification and carbonate reservoir physical properties[J].Geological Science and Technology Intelligence, 2010,29(3):79-83.
[10]	岳迎春, 郭建春, 王益维. 白云岩酸蚀蚓孔模拟实验与分析[J]. 石油与天然气化工,2012,41(1):66-69. YUE Yingchun,GUO Jianchun,WANG Yiwei. Simulation experiment and analysis of dolomite acid etching earthworm hole[J].Chemical Engineering of Oil & Gas,2012,41(1):66-69.
[11]	余东合, 范秋菊, 修书志, 等. 新型低伤害络合酸体系评价实验[J]. 石油钻采工艺, 2017, 39(6):760-765. YU Donghe,FAN Qiuju,XIU Shuzhi, et al. Evaluation experiment of low-damage chelating acid system[J]. Oil Drilling & Production Technology,2017,39(6):760-765.