Volume 34 Issue 3
May  2017
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ZHAN Jiaojiao, GONG Houping, CHEN Li, YUAN Liang, CHEN Wei, CHEN Dongsheng, ZHOU Yongzhang. A Corrosion Inhibitor for Potassium Salt Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 54-58. doi: 10.3969/j.issn.1001-5620.2017.03.010
Citation: ZHAN Jiaojiao, GONG Houping, CHEN Li, YUAN Liang, CHEN Wei, CHEN Dongsheng, ZHOU Yongzhang. A Corrosion Inhibitor for Potassium Salt Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 54-58. doi: 10.3969/j.issn.1001-5620.2017.03.010
shu

A Corrosion Inhibitor for Potassium Salt Drilling Fluids

doi: 10.3969/j.issn.1001-5620.2017.03.010

  • 1. School of Environmental Sciences and Engineering, Nanjing, Jiangsu 210009;

  • 2. Drilling Department of Jiangsu Petroleum Engineering Co., Ltd., Yangzhou, Jiangsu 225261

  • Received Date: 2017-02-18
  • Publish Date: 2017-05-31
    Abstract
  • Drilling fluid additives have very complex composition which will cause corrosion to downhole drilling assembly, or even cause the drilling assembly to become unusable. To resolve this problem, corrosion inhibitors for use in KCl drilling fluids have been selected through weight loss method, electrochemistry experiment and SEM, and the mechanisms of corrosion caused by KCl drilling fluids have been studied. The best corrosion inhibition results were obtained with this drilling fluid composition:0.7% silicon compound + 0.7% diethylenetriamine + 0.1% triethylenetetramine, the rate of corrosion inhibition was 90.36%. Electrochemistry and SEM tests showed that the corrosion inhibitor selected for use in KCl drilling fluid had good corrosion inhibitive capacity and application prospect.

     

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