Volume 37 Issue 6
Dec.  2020
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2020  >  37(6): 721-725
LUO Xuwu, ZHAO Xionghu, YU Jiashui, LIU Junyu, CAO Jiajun, HE Gang. Laboratory Study on Water in Oil Drilling Fluid Formulated with Biodiesel Oil[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(6): 721-725. doi: 10.3969/j.issn.1001-5620.2020.06.007
Citation: LUO Xuwu, ZHAO Xionghu, YU Jiashui, LIU Junyu, CAO Jiajun, HE Gang. Laboratory Study on Water in Oil Drilling Fluid Formulated with Biodiesel Oil[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(6): 721-725. doi: 10.3969/j.issn.1001-5620.2020.06.007
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Laboratory Study on Water in Oil Drilling Fluid Formulated with Biodiesel Oil

doi: 10.3969/j.issn.1001-5620.2020.06.007

  • 1. CNPC XIBU Drilling Engineering Company Limited, Karamay, XIN Jiang 834000;

  • 2. China University of Petroleum-Beijing College of Petroleum Engineering, Beijing 102249

  • Received Date: 2020-09-02
  • Publish Date: 2020-12-28
    Abstract
  • Biodiesel, mainly composed of fatty acid alkyl esters, is a good base fluid for making ester-base drilling fluid because of its many advantages, such as high closed-cup flashing point (thus can avoid catching fire), no or a small amount of sulfur and aromatic hydrocarbons contents, stable properties, low toxicity and non-fluorescence. It has no impact on wireline logging. Several oil base mud additives, such as the primary emulsifier TC-PEM, the secondary emulsifier TC-GSEM, the gelling agent UP-GEL and filter loss reducer XXX were optimized to overcome the poor compatibility of the oil base mud additives with biodiesel. Three biodiesel oil base drilling fluids were formulated with these additives through property evaluation. These biodiesel oil base drilling fluids have good thermal stability (resistant to temperature of 120 ℃), good performance in resisting fresh water invasion (15%) and CaO contamination (2%). The biodiesel oil base drilling fluids have a degradability level of “easy to degrade”, and are thus environmentally friendly.

     

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