Optimization Test of Low-temperature and Low-density Cementing Slurry System for Natural Gas Hydrate Drilling
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Faculty of Resources, China University of Geosciences (Wuhan),Faculty of Resources, China University of Geosciences (Wuhan),Faculty of Resources, China University of Geosciences (Wuhan),Faculty of Resources, China University of Geosciences (Wuhan)

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P634.6

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    Abstract:

    In view of the special requirements for cementing slurry in natural gas hydrate drilling, a new low-temperature and low-density cementing slurry formula was obtained with a number of experiments, the composition is 100% class-G oil well cement + 15% floating beads + 10%~15% micro silicon + 8% superfine slag + 1% defoaming agent + 0.5% fluid loss additive + 2.5% dispersant + 2% silane coupling agent + 5.6%~6% sodium metasilicate anhydrous + 8%~8.5% calcium chloride + 0.3% triethanolamine + 1% sodium chloride with 70% water-solid ratio. The slurry system can meet the cementing requirements of natural gas hydrate drilling in density, thickening time, compressive strength, rheology and bleeding at low temperature.

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History
  • Received:June 23,2017
  • Revised:November 09,2017
  • Adopted:November 28,2017
  • Online: February 27,2018
  • Published: