Effect of in-situ mineral dissolution on high salinity of flowback water during hydraulic fracturing in shales

Lingping Zeng, Nathan Reid, Yunhu Lu, Mofazzal Hossain, Ali Saeedi & Quan Xie
Hydraulic fracturing has been widely implemented to enhance hydrocarbon production from shale reservoirs. However, one of the main challenges during hydraulic fracturing is to understand the high salinity of flowback water (up to 300,000 mg/L). While several mechanisms have been proposed to explain the controlling factor behind this phenomenon, less attention has been paid to quantify the contribution of fluid-shale interactions such as mineral dissolution and surface complexation on fluid salinity. We thus conducted spontaneous...
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