Volume 34 Issue 2
Mar.  2017
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XU Chuntian, ZHANG Ruifang, XU Tongtai, XIAO Weiwei. Comparison of Performances of SMP-I and SMP-II at High Temperature and in Salt Environment[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 79-82. doi: 10.3969/j.issn.1001-5620.2017.02.014
Citation: XU Chuntian, ZHANG Ruifang, XU Tongtai, XIAO Weiwei. Comparison of Performances of SMP-I and SMP-II at High Temperature and in Salt Environment[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 79-82. doi: 10.3969/j.issn.1001-5620.2017.02.014
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Comparison of Performances of SMP-I and SMP-II at High Temperature and in Salt Environment

doi: 10.3969/j.issn.1001-5620.2017.02.014

  • 1. SINOPEC oilfield service Huadong corporation, Jiangsu drilling corporation, Yangzhou, Jiangsu 225261;

  • 2. Beijing Shidahuyang Petroleum Scien-Tech Development Company Ltd., Beijing 102200

  • Received Date: 2016-11-25
  • Publish Date: 2017-03-31
    Abstract
  • Drilling fluid additives should have their range of use clearly defined to make the best use of them, and great attention should be paid on this issue. Take the SMP-Ⅰ and SMP-Ⅱ as examples, the application characteristics, production technology, and the mechanisms of reducing filtration rate and resisting salt contamination are analyzed in this paper. The ranges of use of SMP-Ⅰ and SMP-Ⅱ are discussed and the differences in high temperature and salt-resistant performances of the two additives manufactured by different production technologies are compared. Laboratory experiment has shown that in drilling fluids with salinity less than 2%, and borehole temperature below 180℃, the performance of SMP-Ⅰ was better than SMP-Ⅱ. At 120℃ and 150℃, SMP-Ⅰ worked well in different salinities up to saturation, while SMP-Ⅱ only functioned in drilling fluids containing 25% salts or in under-saturated and saturated drilling fluids. At 180℃, SMP-I can be used in saltwater drilling fluids with salinities less than 20%, while SMP-Ⅱ can be used in saltwater drilling fluids with salinities greater than 20% to saturation.

     

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