Modified Mechanism and Properties of Water-Soluble Sodium Silicate for Oil and Gas Field

Abstract:

With an analysis on the structure of water-soluble sodium silicate and its polymerization, it was found that the poor stability of silicate drilling fluids lies in the relevance between the inherent nature and the pH value of sodium silicate. The modification of water-soluble sodium silicate in this paper was to improve its stability and keep the inhibitive property simultaneously. The a-olefin sulfonate (AOS) was employed as the modifer agent acted on the water-soluble sodium silicate monomer and oligomers. Furthermore, the modification mechanism was discussed through FTIR, Laser particle size, Zeta potential and SEM. A stable sodium silicate drilling fluids with better inhibitive property was obtained by the comparison of modified sodium silicate and unmodified ones.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 220-229
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.220
• Online since: March 2015
• Authors: Hong Xu Zhang, Yu Jie Zhao, Jia Zhuang*, Hai Yang Qin, Han Ling Zhang
• Keywords: Drilling Fluids Stability, Inhibitive Property, Modification, Water-Soluble Sodium Silicate

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