Abstract
Microrheological studies of givpan-based gel-forming solutions in micron-sized pores have shown that contact interaction in the fluid–rock formation system leads to structural and mechanical colmatation of the porous medium, blocking of pore channels by elastic-viscous filtrate plugs, which under normal conditions exhibit viscoplastic qualities. It is shown that these processes develop immediately upon contact of the filtrate with the surface, and discontinuities at critical pressures do not worsen the water-insulating properties.
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