Experimental study on performance evaluation of fracturing fluid system with enhanced oil recovery

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Xu, Bing^1 ; Liu, Yikun^1 ; Yu, Qiannan^1 ; Xiao, Chengshi^1

School of Petroleum Engineering, Northeast Petroleum University, Daqing

163318, China^1

关键词: Emulsifying property;    Enhanced oil recovery;    Interfacial tension values;    Low concentrations;    Performance evaluations;    Performance experiment;    Surfactant concentrations;    Wettability reversal;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/4/012042/pdf
DOI  :  10.1088/1755-1315/186/4/012042

来源: IOP

【 摘 要 】

In order to screen out fracturing fluid system with enhanced oil recovery performance, performance experiments of three surfactants blended with low concentration guar gum fracturing fluid used in fracturing technology of Daqing Oilfield are conducted. The performance experiments include interfacial tension test, emulsifying performance test and wettability reversal experiment. Interfacial tension values of different surfactant concentrations are tested. Water separation rates of emulsion in nine liquid systems are tested. The wettability of 36 cores is tested. It is concluded WPS and LCG composite fracturing fluid system has the lowest interfacial tension and stable emulsifying property, also reverses the wettability of hydrophilic core and increases the wettability of hydrophilic core.