Volume 34 Issue 2
Mar.  2017
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JIANG Guancheng, QI Yourong, AN Yuxiu, GE Qingying, ZHANG Lingyu. Synthesis and Evaluation of a High Temperature AMPS/AM/NVP Copolymer Filter Loss Reducer[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 39-44. doi: 10.3969/j.issn.1001-5620.2017.02.007
Citation: JIANG Guancheng, QI Yourong, AN Yuxiu, GE Qingying, ZHANG Lingyu. Synthesis and Evaluation of a High Temperature AMPS/AM/NVP Copolymer Filter Loss Reducer[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(2): 39-44. doi: 10.3969/j.issn.1001-5620.2017.02.007

Synthesis and Evaluation of a High Temperature AMPS/AM/NVP Copolymer Filter Loss Reducer

doi: 10.3969/j.issn.1001-5620.2017.02.007
  • Received Date: 2016-12-05
  • Publish Date: 2017-03-31
  • Filter loss reducers presently in use had poor stability and filtration control ability in drilling deep and ultra-deep wells. To overcome these problems, a terpolymer filter loss reducer has been synthesized in laboratory with 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide (AM), and N-vinyl pyrrolidone (NVP). The optimum synthesis conditions were as follows:molar ratio of AM:AMPS:NVP=6:3:1, concentration of initiator=0.2%, concentrations of the monomers used was 1.5%, respectively, reaction temperature=50℃, and the reaction time=4 h. Structure analysis of the synthesized product with IR spectroscopy showed that it was a terpolymer, and TEM analysis showed that the synthesized product formed an ordered space network structure in water solution. In a 4% fresh water base drilling fluid, the high temperature stability of the synthesized filter loss reducer was remarkably better than that of PAC-LV; the synthesized filter loss reducer functioned effectively at 180℃.

     

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