... was determined using the conventional asphaltene solubility detection test. The pure chemical additives researched include kerosene, xylene, toluene, naphtha, and heptane. These chemicals were added with 5, 10, and 20 wt% to the crude oil, and the viscosity was measured using a viscometer at temperatures of 25...

... accelerated by imbibition transfer. The effects of temperature, wettability and boundary conditions on the interaction of miscible fluids pairs were also studied. Pentane, heptane and decane were used as the solvent phases. Advanced photographic techniques using UV light and dyed fluids were applied to better...

... Abstract This paper presents an extensive analysis solvent injection at elevated temperatures to recover heavy- oil/bitumen from fractured carbonates. Three different solvents (propane, heptane and distillate oil - naphtha) were injected at different temperatures representing a wide range...

... introduced into the system and heavy-oil recovery. We conducted a series of dynamic experiments in which liquid (heptane) solvent was injected into a heavy oil saturated rock matrix, surrounded by a fracture with and without pre-thermal injection. Water-wet rock matrix (sandstones) was saturated with heavy...