Volume 32 Issue 2
Mar.  2015
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LUO Hongwen, LI Zaoyuan, CHENG Xiaowei, YI Yajun, LIN Luan. Study on Mechanical Performance of Low Density Mineral Fiber Set Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 76-78. doi: 10.3969/j.issn.1001-5620.2015.02.020
Citation: LUO Hongwen, LI Zaoyuan, CHENG Xiaowei, YI Yajun, LIN Luan. Study on Mechanical Performance of Low Density Mineral Fiber Set Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(2): 76-78. doi: 10.3969/j.issn.1001-5620.2015.02.020

Study on Mechanical Performance of Low Density Mineral Fiber Set Cement

doi: 10.3969/j.issn.1001-5620.2015.02.020
  • Received Date: 2014-11-11
  • Publish Date: 2015-03-31
  • Excellent mechanical performance of set cement is required in cementing wells of 6000m and deeper using one-stage cementing technology. Improvement of mechanical performance of set cement plays an important role in maintaining the integrity of cemented hole. Comparison of polypropylene fiber and basalt fiber in in improving the mechanical performance of set cement was conducted by analyzing the changes in compressive strength, tensile strength, breaking strength and elastic modulus of set cement. It showed that at low concentrations basalt fiber has little effect on the flow properties of cement slurry, and, like the polypropylene, it remarkably reduces the API filtration rate and free water content of cement slurry. Cement slurry treated with basalt fiber gives set cement of enhanced compressive, tensile and breaking strengths. At a concentration of 0.5%, the tensile strength of set cement is increased by 50%, with an obvious decrease in the elastic modulus of the set cement. As an economical cement slurry additive, basalt will find wider application in oil and gas wells cementing.

     

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