石油化工高等学校学报

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (5): 56-59.DOI: 10.3696/j.issn.1006-396X.2011.05.015

• 石油化工 • 上一篇    下一篇

酸性堵水剂DQ-3的实验研究

王玉功1,2,任雁鹏1,2,李勇1,2,朱家杰2,3   

  1. 1.川庆钻探钻采工程技术研究院,陕西西安710018;
    2.低渗透油气田勘探开发国家工程实验室,陕西西安710018;
    3.长庆油田分公司油气工艺研究院,陕西西安710021
  • 收稿日期:2011-10-14 修回日期:2011-10-20 出版日期:2011-10-25 发布日期:2011-10-25
  • 作者简介:王玉功(1982-)，男，山东潍坊市，工程师，硕士。

Experiment Study on Acidic Plugging Agent DQ-3

  1. 1. Technology & Engineering Research Institute of Chuanqing Drilling Engineering Company, Xi’an Shaanxi  710018,P.R.China；
    2. National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Xi’an Shaanxi 710018,P.R.China；
    3. Oil ＆ Gas Technology Research Institute Changqing Oilfield Company, Xi’an Shaanxi 710021,P.R.China
  • Received:2011-10-14 Revised:2011-10-20 Published:2011-10-25 Online:2011-10-25

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摘要： 结合变粘酸的酸化原理,以酸液稠化剂为主要原料,配以交联剂和缓蚀剂,制得了酸性堵水剂DQ- 3。优选出酸性堵水剂DQ-3的最佳配方(质量分数):10%HCl+0.7%稠化剂+0.4%交联剂+0.05%缓蚀剂。采用瓶试法成胶实验和岩心流动实验评价了DQ-3的各项性能。结果表明,DQ-3体系的残酸质量分数小于0.1%时(pH 为2~3),体系反应形成凝胶,粘度大于100000mPa·s;DQ-3体系耐温40~90 ℃,对矿化度(大于10g/L)不敏感;DQ-3堵水剂的岩心堵水率大于95%,堵油率小于45%。

关键词: 酸性堵水剂,    , 凝胶,    , 封堵性,    , 长庆油田

Abstract: Based on the acidizing principle of variable-viscosity acid,a acid blocking agent(DQ-3) was prepared with acid densifier as major raw materials,and with crosslinker and inhibitor as additives,to achieve combination of near-wellbore unblocking and far-wellbore blocking.The formula of acid blocking agent (DQ-3)is optimized:10% HCl,0.7% densifier,0.4% crosslinker and 0.05%inhibitor.Various performances of DQ-3 were evaluated by gel test (bottle test method) and core flow test.The results show that when residual acid concentration of DQ-3 system was less than 0.1% (pH=2~3),gel is formed under system reaction,and viscosity is more than 100 000mPa·s;DQ-3 system can resist temperature of 40~90℃,and is insensitive to salinity(above 10g/L);the core water blocking rate of DQ-3 is over 95%,whereas oil blocking rate is below 45%.

Key words: Acidic plugging agent,    , Gel,    , Plugging performance,    , Changqing oil fields

引用本文

王玉功,任雁鹏,李勇,朱家杰. 酸性堵水剂DQ-3的实验研究[J]. 石油化工高等学校学报, 2011, 24(5): 56-59.

WANG Yu-gong,REN Yan-peng,LI Yong. Experiment Study on Acidic Plugging Agent DQ-3[J]. Journal of Petrochemical Universities, 2011, 24(5): 56-59.

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