Laboratory investigations were conducted to examine the effectiveness of heavy oil-in-water emulsion in plugging the near wellbore matrix, thereby reducing gas (and water) coning or eliminating gas leakage to the surface. Experiments at micro- and macro-scale levels were performed to: a) provide a detailed understanding of emulsion flow and blocking mechanism, b) set criteria for controlling an emulsion penetration depth before it breaks down and seals a porous medium.
展开▼
