Volume 35 Issue 5
Sep.  2018
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2018  >  35(5): 94-97,102
LIU Jian, XIAO Jingnan, WANG Qichun, ZENG Min, LIU Wei. Development of A New Defoamer for Oil Well Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 94-97,102. doi: 10.3969/j.issn.1001-5620.2018.05.018
Citation: LIU Jian, XIAO Jingnan, WANG Qichun, ZENG Min, LIU Wei. Development of A New Defoamer for Oil Well Cement Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 94-97,102. doi: 10.3969/j.issn.1001-5620.2018.05.018
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Development of A New Defoamer for Oil Well Cement Slurry

doi: 10.3969/j.issn.1001-5620.2018.05.018

  • Sinopec Research Institute of Petroleum Engineering, Beijing 100101

  • Received Date: 2018-05-12
  • Publish Date: 2018-09-30
    Abstract
  • Foams developed in mixing oil well cement slurry, especially latex cement slurry, are diffcult to remove and therefore result in cement slurry with reduced density and diffculties in mixing cement and pumping the slurry. A new defoamer recently developed is able to eliminate the foams developed in makeup water and foams developed during slurry mixing. It works very well in mixing latex cement slurry. When agitated at 4,000 r/min, time spent in defoaming makeup water and the cement slurry was less than 10 s, and the foaming height was less than 10 mm. The defoamer imposed no negative effect on the rheology, strength and thickening properties of the cement slurry. The synthetic process of the defoamer is simple. Pilot production product of the defoamer has been used in feld well cementing operations and has good prospects of popularization.

     

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