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川滇页岩气水平井水基钻井液技术

刘敬平,  孙金声

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文章导航 > 钻井液与完井液  > 2017 >  34(2): 9-14
刘敬平, 孙金声. 川滇页岩气水平井水基钻井液技术[J]. 钻井液与完井液, 2017, 34(2): 9-14. doi: 10.3969/j.issn.1001-5620.2017.02.002
引用本文: 刘敬平, 孙金声. 川滇页岩气水平井水基钻井液技术[J]. 钻井液与完井液, 2017, 34(2): 9-14. doi: 10.3969/j.issn.1001-5620.2017.02.002
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LIU Jingping, SUN Jinsheng. Water Base Drilling Fluid Technology for Horizontal Shale Gas Drilling in Sichuan and Yunnan[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 9-14. doi: 10.3969/j.issn.1001-5620.2017.02.002
Citation: LIU Jingping, SUN Jinsheng. Water Base Drilling Fluid Technology for Horizontal Shale Gas Drilling in Sichuan and Yunnan[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 9-14. doi: 10.3969/j.issn.1001-5620.2017.02.002
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川滇页岩气水平井水基钻井液技术

doi: 10.3969/j.issn.1001-5620.2017.02.002

  • 1. 中国石油勘探开发研究院, 北京 100083;

  • 2. 中国石油集团钻井工程技术研究院, 北京 102206

基金项目: 

中国石油集团重大专项"浙江油田昭通示范区页岩气钻采工程技术现场试验"（2014F470205）资助。

详细信息
    作者简介:

    刘敬平,在读博士研究生,1985年生,现在从事钻井液技术研究工作。电话15600563498;E-mail:liujingping20@126.com。

    通讯作者:

    孙金声,E-mail:sunjinsheng@petrochina.com.cn。

  • 中图分类号: TE254.3

Water Base Drilling Fluid Technology for Horizontal Shale Gas Drilling in Sichuan and Yunnan

  • 1. PetroChina Research Institution of Petroleum Exploration and Development, Beijing 100083;

  • 2. CNPC Drilling Research Institute, Beijing 102206

    摘要
  • 摘要: 为解决水基钻井液钻页岩气水平井过程中出现坍塌等井壁失稳问题，以多碳醇、磺化沥青钾盐为核心处理剂，研究了一套针对川滇页岩气地层的新型水基钻井液。通过膨胀率、回收率、力学特性分析、封堵、抗污染等实验，研究了新型水基钻井液基本性能。结果表明，新型水基钻井液显著抑制云南龙马溪组、四川龙马溪组及五峰组页岩水化膨胀与分散，页岩膨胀率分别为1.23%、0.95%和0.98%，回收率分别为98.94%、99.13%和99.05%，其抑制页岩水化膨胀分散性能与油基钻井液相近；与常规水基钻井液相比，页岩抗压强度降低程度大幅减小，能有效减缓页岩抗压强度降低，对页岩裂缝具有较强的封堵性；抗盐（5% NaCl）、膨润土（5%）、岩屑（20%钻屑）污染能力强，具有良好的稳定井壁效果。

     

    Abstract: Borehole wall instability has been a problem frequently encountered in horizontal shale gas drilling with water base drilling fluids. A new type of water base drilling fluid has been developed for use in shale gas drilling in Sichuan and Yunnan provinces. Higher alcohols and potassium salt of sulfonated asphalt were the main additives used in formulating the drilling fluid. The basic performances of the new drilling fluid were studied through laboratory experiments such as swelling test, hot rolling test, mechanical characteristics analysis, plugging test and contamination test. It was shown that the rates of swelling of the Longmaxi formation in Yunnan, Longmaxi formation and Wufeng formation in Sichuan were reduced to 1.23%, 0.95% and 0.98%, respectively, and the rates of shale cuttings recovery were 98.94%, 99.13% and 99.05%, respectively, indicating that the new drilling fluid had strong inhibitive capacity similar to that of oil base drilling fluids in inhibiting the shales drilled. Compared with conventional water base drilling fluids, the decreasing amplitude of the compressive strength of shales in contact with water base drilling fluids was greatly reduced. The new drilling fluid can plug shale fractures efficiently. Other advantages of the new drilling fluid included salt tolerance (5% NaCl), bentonite contamination tolerance (5%), drilled cutting contamination (20%).

     

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    • 参考文献(15)
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出版历程
  • 收稿日期:  2016-01-15
  • 刊出日期:  2017-03-31

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