首页|Synthesis and characterization of water injection fracturing fluid for wetting and softening coal seam
Synthesis and characterization of water injection fracturing fluid for wetting and softening coal seam
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NSTL
Elsevier
? 2021 Elsevier LtdThis study aims to achieve dust control from the source, reduce the dust concentration of coal mining faces, and provide a safe and pollution-free working environment for underground operators. In this study, dodecyl polyglucoside was used as the matrix material, tris-benzoic acid was used as the crosslinking agent, and eramidopropyl was used as the graft. A new carboxylic anionic surfactant (CAS) was prepared by esterification and amidation crosslinking reactions, nano sodium carboxymethyl cellulose was a micellar accelerator, and a new type of anionic fracturing fluid was prepared. The reaction process and structure of the product were analyzed by infrared spectroscopy, X-ray diffraction and scanning electron microscopy, and the thermal stability of the product was analyzed by thermogravimetry experiments. Related performance testing experiments showed that CAS had a relatively low surface tension, and the product had a relatively high shear viscosity and low filtration. Compared with water and carboxymethyl guar gum fracturing fluid, the product has a better wetting and softening effect on coal. In addition, through molecular dynamics simulation, it is determined that CAS in the product can form a good connection with coal molecules and act firmly on the surface of coal, which greatly promotes the wetting of coal.
NSTL
Elsevier
