Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2015, Vol. 28 ›› Issue (2): 54-57.DOI: 10.3969/j.issn.1006-396X.2015.02.011

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Research and Prevention of Coal WaterSensitive Mechanism

  

  1. (1.CBM Exploration and Development in Huabei Oilfield Company Division, Changzhi Shanxi 046000，China;  2.China National Petroleum Corporation CBM Pilot Test Base, Renqiu Hebei 062552，China; 3.Key Laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze University)，Ministry of Education，Wuhan Hubei 430100，China; 4. Huabei Oilfield Exploration and Development Research Institute, Renqiu Hebei 062552，China)
  • Received:2014-05-13 Revised:2014-09-16 Published:2015-04-25 Online:2015-06-23

煤岩水敏性机理研究及防治

崔金榜1, 2,  汪伟英3,  张承洲3,  喻 鹏2, 4,  胡振华3,  刘建伟2, 4   

  1. ( 1. 华北油田分公司煤层气勘探开发事业部, 山西长治0 4 6 0 0 0; 2. 中国石油天然气集团公司煤层气开采先导试验基地,
    河北任丘0 6 2 5 5 2; 3. 油气资源与勘探技术教育部重点实验室( 长江大学) , 湖北武汉4 3 0 1 0 0;
    4. 华北油田分公司勘探开发研究院, 河北任丘0 6 2 5 5 2)
  • 通讯作者: 汪伟英( 1 9 5 9 - ) ,女, 硕士, 教授, 从事采油工程和油层物理方面研究; E - m a i l : ww y 5 9@1 6 3. c o m。
  • 作者简介:崔金榜( 1 9 6 7 - ) , 男, 高级工程师, 从事煤层气钻采技术研究和管理工作; E - m a i l : z h b_c j b@p e t r o c h i n a. c o m. c n。
  • 基金资助:
    大型油气田及煤层气开发国家科技重大专项课题“ 山西沁水盆地煤层气水平井开发示范工程” 资助项目
    ( 2 0 1 1 Z X 0 5 0 6 1) 。

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Abstract: The influence of water swelling of coal rock on reservoir was studied by means of static observation experiments and core dynamic flow experiments. The water sensitive mechanism of coal was revealed, and the control methods of the coal rock water sensitive was proposed. The experiment results show that water sensitivity of coal rock is easily happened, which damages the strata a lot. Core flow of compacted coal powder is studied, which shows that particle migration is caused by clay mineral hydration swellingand causes the drop of permeability. The damage on reservoir is irreversible, while KCl has a good effect on control of coal rock expansion.

Key words: Coal rock,    ,  Water sensitivity,    , Swell,    ,  Particle migration,    ,  Working fluid,    ,  Antiswelling agent

摘要：

通过静态观察实验以及岩心动态流动实验, 研究了煤岩吸水膨胀对储层的影响, 揭示了煤岩水敏机
理, 提出了防治煤岩水敏的方法。水敏实验结果表明, 煤岩很容易发生水敏, 对地层产生较大伤害。膨胀实验显示,
煤粉在低矿化度的流体中更易发生膨胀。对煤粉充填压实岩心进行的流动实验结果表明, 黏土矿物水化膨胀, 产生
微粒运移, 使渗透率下降, 对储层的伤害具有不可逆性, 而 KC l对抑制煤岩膨胀具有很好的效果。

关键词: 煤岩,  , 水敏, 膨胀,  , 微粒运移,  , 入井液, 防膨剂

Cite this article

Cui Jinbang,Wang Weiying,Zhang Chengzhou,et al. Research and Prevention of Coal WaterSensitive Mechanism[J]. Journal of Petrochemical Universities, 2015, 28(2): 54-57.

崔金榜, 汪伟英, 张承洲. 煤岩水敏性机理研究及防治[J]. 石油化工高等学校学报, 2015, 28(2): 54-57.

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