Volume 32 Issue 6
Nov.  2015
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QIN Yong, JIANG Guancheng, DENG Zhengqiang, QIN Zonglun. Development of Polyester Gel Strength Enhancer and High Density Oil Base Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(6): 1-4. doi: 10.3969/j.issn.1001-5620.2015.06.001
Citation: QIN Yong, JIANG Guancheng, DENG Zhengqiang, QIN Zonglun. Development of Polyester Gel Strength Enhancer and High Density Oil Base Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(6): 1-4. doi: 10.3969/j.issn.1001-5620.2015.06.001

Development of Polyester Gel Strength Enhancer and High Density Oil Base Drilling Fluid

doi: 10.3969/j.issn.1001-5620.2015.06.001
  • Received Date: 2015-08-24
  • Publish Date: 2015-11-30
  • A high performance gel strength enhancer was developed for use in oil base drilling fluids to improve their suspension capacity.The enhancer is a polyester made from a high purity dimeric dibasic acid and a polyoxyethylene fatty amine(EthomeenC25).The molecules of the gel strength enhancer have flexible backbones and groups of strong polarity, which enable the molecules to form steric networks.The gel strength enhancer effectively improves the low shear rate rheology and gel strengths of oil base drilling fluids.LSYP of drilling fluid is incresed from 0.51 Pa to 3.07 Pa, gel strength is improved from 1.5/2.5 Pa/Pa to 5.0/7.5 Pa/Pa.High density oil base drilling fluid has been formulated with this gel strength enhancer, and the properties of the drilling fluid tested.The drilling fluid has good basic properties and high gel strengths, and has good suspension capacity even after hot rolling at 180℃.

     

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