Fig. 3
From: Preparation and application of melamine cross-linked poly ammonium as shale inhibitor
The appearance of mud balls immersed in different treatment solutions for 12 h. a Distilled water, b 0.8% DEM-8, c 1.0% KCl, d 0.8% DEM-8 + 1.0% KCl
Fig. 3 | Chemistry Central Journal