Volume 34 Issue 3
May  2017
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2017  >  34(3): 33-38
DENG Xiaogang, LUO Fei, MA Lihua, XI Fenglin, LUO Yucai, YIN Xiangying, SUN Zongman. Sulfonated Betaine:Synthesis and Application in Oil-in-Water Emulsions[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 33-38. doi: 10.3969/j.issn.1001-5620.2017.03.006
Citation: DENG Xiaogang, LUO Fei, MA Lihua, XI Fenglin, LUO Yucai, YIN Xiangying, SUN Zongman. Sulfonated Betaine:Synthesis and Application in Oil-in-Water Emulsions[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 33-38. doi: 10.3969/j.issn.1001-5620.2017.03.006
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Sulfonated Betaine:Synthesis and Application in Oil-in-Water Emulsions

doi: 10.3969/j.issn.1001-5620.2017.03.006

  • 1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500;

  • 2. The Second Drilling Branch of CNPC Bohai Drilling Engineering Company Limited, Langfang, Hebei 065000;

  • 3. Department of Exploration of PetroChina Huabei Oilfield Company, Renqiu, Hebei 062550

  • Received Date: 2017-01-22
  • Publish Date: 2017-05-31
    Abstract
  • Oil-in-water emulsion drilling fluid is an important low-density water base drilling fluid and is widely used in drilling lowpressure reservoirs. To enhance the high temperature stability of the oil-in-water emulsion drilling fluid in deep well drilling, a sulfonated betaine with varied carbon chains was synthesized in laboratory and used in formulating emulsion drilling fluid after measuringthe change of its surface characteristics. Experimental results showed that the drilling fluid formulated had excellent rheology and good emulsion stability. After hot rolling at 180-210℃ for 16 hours, the viscosity and gel strengths of the drilling fluid were maintained in reasonable ranges. HTHP filter loss was less than 20 mL, satisfying the basic requirements as an emulsion drilling fluid. No oil separation and emulsification were found of the drilling fluid. The drilling fluid was resistant to contamination caused by 15% water, 15% diesel oil, 15% drilled cuttings, or by 2% salt, respectively, indicating that it was able to satisfy the needs for deep low pressure reservoir drilling.

     

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