Efficient and variable viscosity fracturing fluid of deep coal rock gas and popularization in ultimate volume fracturing

• Published in: Méitàn xuébào Vol. 50; no. 2; pp. 1162 - 1174
• Main Authors: Bo LIN, Shuai CHEN, Xiangyang YAN, Mengqi CHEN, Liangjun DU, Heng CHEN, Hongsheng LU, Shuai SUN
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of Journal of China Coal Society 01.02.2025
• Subjects: deep coal rock gas; desorption promotion; low viscosity and high elasticity; reconstruction of complex seam network; stimulus response; ultimate volume fracturing; viscosity control
• ISSN: 0253-9993
• DOI: 10.13225/j.cnki.jccs.2024.0881

Limit volume Fracturing Technology is the effective means to achieve high yield industrial flow for deep coal rock gas, on the basis of this technique, fracturing fluid is the key to fully “Breaking” coal seam, establish filling sand complex crack network, realize Anatonosising-Desorption promote for coal rock,therefore, the focus of coal rock gas fracturing fluid research is fully meet the field condition, construction technology and physical characteristics of coal rock. Focus on the research of the friction reducer with high stability, instant, low dosage but high efficiency and on-line viscosity change integration,a switch-type emulsion resistance reducer was prepared by introducing inorganic salt stimulation response material, designing switch reverse phase emulsion polymerization technology, condition controling of Multicomponent copolymerization and compounding desorption promote agent. The influence law on fracturing fluid performance by important parameters of emulsion resistance reducer was clarifie