Study on Wettability of Coal by Different Surfactants
LI Haowei
WANG Zhaofeng
YUE Jiwei
DONG Jiaxin
Abstract：In order to improve the effect of water injection in coal seam, to improve the wettability of coal with poor wettability, surfactant was added. Taking the coal samples of Liulong Coal Mine in Baise Group of Guizhou Province as an example, this paper selects four representative and inexpensive surface active agents based on the species of surfactant. By measuring the surface tension of pure water and adding surface active agent and the contact angle with the coal body, the sulfonated sodium bate acid two octyl sodium salt(fast penetrating agent T) was selected as the best surfactant and the best concentration was 0.4%.
Keywords：water injection in seamwettabilitysurfactantsurface tensioncontact angle
Publication Date：2019-03-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 22-25 )