Volume 33 Issue 1
Jan.  2016
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WANG Lin, DONG Xiaoqiang, YANG Xiaohua, XUE Yuzhi, LI Tao. Development and Evaluation of a High Density Drilling Fluid Lubricant[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(1): 28-32. doi: 10.3969/j.issn.1001-5620.2016.01.006
Citation: WANG Lin, DONG Xiaoqiang, YANG Xiaohua, XUE Yuzhi, LI Tao. Development and Evaluation of a High Density Drilling Fluid Lubricant[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(1): 28-32. doi: 10.3969/j.issn.1001-5620.2016.01.006

Development and Evaluation of a High Density Drilling Fluid Lubricant

doi: 10.3969/j.issn.1001-5620.2016.01.006
  • Received Date: 2015-09-15
  • Publish Date: 2016-01-30
  • A high density drilling fluid lubricant, SMJH-1, was developed using polyalcohol, long-chain fatty acids with double bonds in their molecules, and natural minerals. SMJH-1 is a high molecular weight ester with ability to reduce extreme pressure friction. Drilling fluids treated with 1%, 2% and 3% SMJH-1 have coefficient of friction reduced by 24.2%, 33.6% and 38.3%, respectively. SMJH-1 functions at 180℃ and in drilling fluids contaminated with 30% salt. SMJH-1 reduces the HTHP filter loss of drilling fluids with density between 1.4 g/cm3 and 2.0 g/cm3, while only slightly affects their rheology. SMJH-1 can spread on the surface of steel, forming a solid film by physico-chemical adsorption and lateral adhesion, hence enhancing the hydrophobicity of the surface and controlling the vortices in the flowing fluid. In this way the friction between fluid and solid surface is reduced. SMJH-1 has been tried in the drilling of the Well Yuanlu-601H and Yuanlu-301, and proved successful.

     

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