Volume 33 Issue 1
Jan.  2016
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QIN Yong, JIANG Guancheng, DENG Zhengqiang, GE Lian. Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(1): 6-10. doi: 10.3969/j.issn.1001-5620.2016.01.002
Citation: QIN Yong, JIANG Guancheng, DENG Zhengqiang, GE Lian. Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(1): 6-10. doi: 10.3969/j.issn.1001-5620.2016.01.002

Synthesis and Evaluation of A Primary Emulsifier for High Temperature Oil Base Drilling Fluid

doi: 10.3969/j.issn.1001-5620.2016.01.002
  • Received Date: 2015-10-09
  • Publish Date: 2016-01-30
  • A primary emulsifier, HT-MUL, for high temperature oil base drilling fluid was developed using tall oil fatty acids and maleic anhydride, and the optimum acid value of tall oil fatty acids and optimum concentration of maleic anhydride for the reaction were determined. Evaluation of HT-MUL shows that HT-MUL performs very well as an emulsifier. Using HT-MUL, a water-in-oil emulsion (O/W ratio=60:40) was formulated, having electrical stability of 490 V, and another water-in-oil emulsion (O/W ratio=90:10), having electrical stability of 1,000 V. Comparison of HT-MUL with other primary emulsifiers demonstrates that emulsions formulated with HT-MUL have higher electrical stability voltage, lower filter loss and higher rate of emulsion, proving that HT-MUL has better general performance than other emulsifiers. A high performance high density oil base drilling fluid was formulated using HT-MUL, retaining electrical stability of 800 V and filter loss less than 5 mL after hot rolling at 220℃. Oil base drilling fluids formulated with HT-MUL have good high temperature performance and emulsion stability.

     

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