Volume 35 Issue 5
Sep.  2018
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2018  >  35(5): 8-13
LIU Yunfeng, QIU Zhengsong, YANG Peng, ZHONG Hanyi, HUANG Weian, ZHAO Xin. A High-Performance Drilling Fluid Anti-Wear Lubricant[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 8-13. doi: 10.3969/j.issn.1001-5620.2018.05.002
Citation: LIU Yunfeng, QIU Zhengsong, YANG Peng, ZHONG Hanyi, HUANG Weian, ZHAO Xin. A High-Performance Drilling Fluid Anti-Wear Lubricant[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 8-13. doi: 10.3969/j.issn.1001-5620.2018.05.002
shu

A High-Performance Drilling Fluid Anti-Wear Lubricant

doi: 10.3969/j.issn.1001-5620.2018.05.002

  • 1. School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580;

  • 2. Research Center of Engineering Technology, CNPC Great Wall Drilling Company of CNPC, Panjin, Liaoning 124010

  • Received Date: 2018-06-17
  • Publish Date: 2018-09-30
    Abstract
  • In horizontal drilling, high friction, high torque and HTHP impose much more rigorous requirements on the lubricity and anti-wear capacity of drilling fluid lubricants. Conventional drilling fluid lubricants are not able to satisfy these requirements. A highperformance anti-wear lubricant SDL-1, has been developed based on "solid-liquid" synergism. A modifed vegetable oil MVO-3, a modifed expandable graphite GIC have been used with dispersant, emulsifer in the development of SDL-1. Laboratory evaluation experiment showed that 5% fresh water bentonite mud treated with 0.5% SDL-1 has coeffcient of friction reduced by at least 85%, and 4% brine mud treated with 0.5% SDL-1 has coeffcient of friction reduced by at least 70%. SDL-1 is well compatible with drilled fluids used in actual drilling operations. It functions normally at 150℃, has low foaming capacity. The fluorescence level of SDL-1 is less than 5. Pin-disc friction and wear test results showed that SDL-1, as a lubricant that is worth spreading, has excellent anti-wear capacity and good lubricity, and is able to effectively mitigate or resolve high friction high torque problems encountered in complex well drilling.

     

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