Volume 33 Issue 5
Sep.  2016
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Article Contents
ZHAO Chunhua, XIA Xiaochun, XIANG Tao, GENG Tie, MIAO Hailong. Development and Application of Antifreeze Nano Emulsified Paraffin PF-EPF[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 9-14. doi: 10.3969/j.issn.1001-5620.2016.05.002
Citation: ZHAO Chunhua, XIA Xiaochun, XIANG Tao, GENG Tie, MIAO Hailong. Development and Application of Antifreeze Nano Emulsified Paraffin PF-EPF[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 9-14. doi: 10.3969/j.issn.1001-5620.2016.05.002

Development and Application of Antifreeze Nano Emulsified Paraffin PF-EPF

doi: 10.3969/j.issn.1001-5620.2016.05.002
  • Received Date: 2016-07-09
  • Publish Date: 2016-09-30
  • An anti-freezing nano emulsified paraffin, PF-EPF, was prepared through multi-component phase transition method, using liquid paraffin as internal phase and water solution of polyhydric alcohol as external phase. A compound emulsifier was added to accelerate the reaction. Parameters affecting the performance of PF-EPF, such as the HLB value and content of surfactant, emulsification temperature, and the content of oil phase were studied, demonstrating that the freezing point of PF-EPF reached -30℃, and thus had good stability and excellent anti-freezing capability. Conventional nano paraffins, when used at low temperatures, always separates out and coagulates, making them difficult to use in drilling. The PF-EPF was synthesized to solve this problem. Compared with conventional nano-paraffin emulsions, the percent of successfully controlling seepage loss with PF-EPF treated mud was increased by 45%, indicating that PF-EPF has better plugging and sealing performance. In field use, PF-EPF has showed its capacity in preventing borehole instability, increasing ROP, and protecting reservoirs. Apart from its use in petroleum engineering, this research work also helps widen the use of nano emulsions in cosmetic, medicine, food and agricultural fields.


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