Volume 32 Issue 5
Sep.  2015
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GU Guangwei, YAO Xiao, ZHOU Xingchun, XIAO Li, WANG Ping, WANG Daquan. Analysis of Abnormal Thickening Behavior of the Class G High Sulfate Resistance Oil Well Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(5): 49-53. doi: 10.3969/j.issn.1001-5620.2015.05.012
Citation: GU Guangwei, YAO Xiao, ZHOU Xingchun, XIAO Li, WANG Ping, WANG Daquan. Analysis of Abnormal Thickening Behavior of the Class G High Sulfate Resistance Oil Well Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(5): 49-53. doi: 10.3969/j.issn.1001-5620.2015.05.012
shu

Analysis of Abnormal Thickening Behavior of the Class G High Sulfate Resistance Oil Well Cement

doi: 10.3969/j.issn.1001-5620.2015.05.012

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

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  • Corresponding author: 姚晓,电话(025)83587253
  • Received Date: 2015-02-13
  • Publish Date: 2015-09-30
    Abstract
  • Some cement slurries formulated with class G cement are studied for the improvement of their poor thickening performance. Clinkers made from raw materials containing high concentration of MgO and unstable components have higher MgO and C3A (4.51% and 7.21%, respectively), and the produced cements in turn have high alkaline and f-CaO concentration (1.97%) and low SO3 concentration (0.42%). Calcination at low temperatures, denser packing of raw material in kiln with limited space, and inadequate cooling all lead to unduly short thickening time. Higher concentrations of C3A and C4AF in clinkers will result in poor compatibility of cement slurry with additives and abnormal thickening behavior of that cement slurry.

     

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