Volume 32 Issue 5
Sep.  2015
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2015  >  32(5): 46-48,53
LI Guanghuan, WU Wenru, HUANG Daquan, MA Hong, GU Yanfeng, CHEN Jianxin, LONG Tao, LI Yecheng. Development of New Gel-breaking Flocculant for Waste Water Base Drilling Fluid Treatment[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(5): 46-48,53. doi: 10.3969/j.issn.1001-5620.2015.05.011
Citation: LI Guanghuan, WU Wenru, HUANG Daquan, MA Hong, GU Yanfeng, CHEN Jianxin, LONG Tao, LI Yecheng. Development of New Gel-breaking Flocculant for Waste Water Base Drilling Fluid Treatment[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(5): 46-48,53. doi: 10.3969/j.issn.1001-5620.2015.05.011
shu

Development of New Gel-breaking Flocculant for Waste Water Base Drilling Fluid Treatment

doi: 10.3969/j.issn.1001-5620.2015.05.011

  • Hongqi Road Dongduan, Dagang Oilfield, Tianjin 300280, China

  • Received Date: 2015-05-08
  • Publish Date: 2015-09-30
    Abstract
  • A new gel breaker, BZ-CAF, made from three monomers, acrylamide (AM), methacryloxyethyltrimethyl ammonium chloride (DMC) and acryloyloxyethyltrimethyl ammonium chloride (DAC), is developed for use as gel-breaking flocculent in waste water base drilling fluids. This high molecular weight polymer has no metal ions in its molecules, and can break the gel structures developed in a drilling fluid, while minimizes its effect on the properties of the new drilling fluid formulated from the old fluid. An ultra-high molecular weight ionic polymer secondaryflocculant, BZ-AAF, is synthesized with acrylamide and AMPS. Waste drilling fluids treated with BZ-CAF and BZ-AAF have COD removed by 94.03%, chroma elimination by 93.83%, and oil removed by 85.86%. Liquid separated from the treated waste drilling fluid can be used to formulate new drilling fluid with stable properties that are comparable to those formulated with fresh water. BZ-CAF and BZ-AAF have been used in 5 wells in Dagang oilfield, showing their potential in environment protection and water source economization.

     

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