Volume 34 Issue 3
May  2017
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2017  >  34(3): 39-43
ZHANG Qunzheng, LIU Jinlei, SUN Shujuan, ZHOU Huixin, YANG Meng, BAI Yongqiang. Synthesis and Evaluation of a Filter Loss Reducer in Flow-control Line[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 39-43. doi: 10.3969/j.issn.1001-5620.2017.03.007
Citation: ZHANG Qunzheng, LIU Jinlei, SUN Shujuan, ZHOU Huixin, YANG Meng, BAI Yongqiang. Synthesis and Evaluation of a Filter Loss Reducer in Flow-control Line[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 39-43. doi: 10.3969/j.issn.1001-5620.2017.03.007
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Synthesis and Evaluation of a Filter Loss Reducer in Flow-control Line

doi: 10.3969/j.issn.1001-5620.2017.03.007

  • College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065

  • Received Date: 2017-02-06
  • Publish Date: 2017-05-31
    Abstract
  • In high pressure jet drilling, the viscosity of drilling fluid at bit nozzle has long been a problem associated with the use of anionic filter loss reducers. A new drilling fluid filter loss reducer has been developed through the copolymerization of 2-Acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide (AM) and potassium acrylate at an optimum ratio of 7:6:1. The total concentration of these monomers was 17%. The filtration control performance and the rheology of the copolymer in fresh water drilling fluid, saltwater drilling fluid and saturated saltwater drilling fluid were studied. The studies showed that the viscosity of the copolymer synthesized in flow-control line was lower than the viscosity of the copolymer synthesized in three-necked flask under the same conditions, solving the problem of high viscosity at the bit nozzle caused by the conventional anionic filter loss reducers. The AMPS/AM/AA copolymer can reduce the filter loss of high salinity water base drilling fluids by 94%. It showed good filtration control and viscosifying performance in fresh water base fluid, saltwater base fluid and saturated saltwater base fluid. Thermal stability analysis and high temperature aging evaluation showed that the copolymer was able to retain its stability at 330℃, satisfying the needs for high temperature drilling fluids in field operation.

     

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