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基于疏水改性纳米碳酸钙的钻井完井液

张虹,  蓝强

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文章导航 > 钻井液与完井液  > 2015 >  32(2): 43-46
张虹, 蓝强. 基于疏水改性纳米碳酸钙的钻井完井液[J]. 钻井液与完井液, 2015, 32(2): 43-46. doi: 10.3969/j.issn.1001-5620.2015.02.011
引用本文: 张虹, 蓝强. 基于疏水改性纳米碳酸钙的钻井完井液[J]. 钻井液与完井液, 2015, 32(2): 43-46. doi: 10.3969/j.issn.1001-5620.2015.02.011
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ZHANG Hong, LAN Qiang. Study on Hydrophobic Nano Calcium Carbonate Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 43-46. doi: 10.3969/j.issn.1001-5620.2015.02.011
Citation: ZHANG Hong, LAN Qiang. Study on Hydrophobic Nano Calcium Carbonate Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 43-46. doi: 10.3969/j.issn.1001-5620.2015.02.011
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基于疏水改性纳米碳酸钙的钻井完井液

doi: 10.3969/j.issn.1001-5620.2015.02.011

  • 中石化胜利石油工程有限公司钻井工艺研究院, 山东东营

基金项目: 国家重大专项"低渗油气田高效开发钻井技术"课题四"低渗油气田储层保护技术"(2011ZX05022-004)中的部分内容。
详细信息
    作者简介:

    张虹,工程师,1972年生,毕业于青岛化工学院,主要从事钻井液化学理论及新技术推广方面的工作。地址:山东省东营市胜利石油工程有限公司钻井工艺研究院;邮政编码257017;电话(0546)8785240;E-mail:free_317@163.com。

  • 中图分类号: TE254.3

Study on Hydrophobic Nano Calcium Carbonate Drilling Fluid

  • Research Center of Drilling Technology, Sinopec Shengli Petroleum Engineering Company Ltd., Dongying, Shandong 257017, China

    摘要
  • 摘要: 基于前期提出的自解堵屏蔽暂堵理论,研制出了性能优良的疏水改性纳米碳酸钙,并在此基础上形成了疏水暂堵钻井液。室内评价结果表明,在屏蔽暂堵钻井液中加入1.5%疏水碳酸钙后,滤失量由2.6降为1.2 mL,泥饼厚度由0.4变为0.28 mm,证明疏水暂堵钻井液能够快速形成外泥饼,降低瞬时滤失量。该钻井液在温度低于140℃时滤失性能比较稳定;抗CaCl2能力为2.5%,抗一价盐浓度为9.0%,抗黏土含量为14.0%;抑制性能好,能在易坍塌地层使用;润滑效果好,极压膜强度超过190 MPa;形成的泥饼在长期油相浸泡下会产生大量裂纹,后期泥饼自行剥落,从而达到自解堵目的,初始渗透率为50×10-3~1000×10-3 μm2的岩心,其渗透率恢复值均大于90%;体系的毒性都很低,均达到了排放标准。

     

    Abstract: Nano calcium carbonate was modified for better hydrophobicity. The modified calcium carbonate was then used to formulate a temporary plugging drilling fluid. At temperatures below 140℃, the fluid had stable filtration property, and was resistant to contamination caused by 2.5% CaCl2, or 9.0% mono valence salts, or 14.0% clay. It also had good shale inhibitive capacity. The film strength under extreme pressure was 190 MPa, indicating good lubricity of the drilling fluid. Percent recovery of permeability of cores with initial permeability ranging from 50×10-3 μm2 to 1,000×10-3 μm2 was greater than 90% for all these cores tested. It was also environmentally friendly.

     

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    • 参考文献(12)
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出版历程
  • 收稿日期:  2014-12-23
  • 刊出日期:  2015-03-31

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