Fig. 6

Morphology of Lost Circulation Materials (LCMs) before and after High-Salinity Treatment. (a) Inorganic rigid LCMs before treatment; (b) Organic rigid LCMs before treatment; (c) Synthetic polymer LCMs before treatment; (d) Inorganic rigid LCMs after treatment; (e) Organic rigid LCMs after treatment; (f) Synthetic polymer LCMs after treatment.