In the TEO-OW boundary condition, one end face of the core is exposed to water and the other is exposed to oil. In this paper, a new mathematical model, which could be used to simulate the combination of cocurrent and countercurrent imbibition with the two-ends-open oil/water (TEO-OW) boundary condition, is developed. 2015), and we now focus on the combination of cocurrent and countercurrent imbibition. In the previous work, we focused on the purely cocurrent imbibition (Meng et al. Understanding the mechanism of cocurrent and countercurrent imbibition is essential in oil recovery from fractured reservoirs. ![]() The flow of oil from matrix system to fracture system will generally involve both cocurrent and countercurrent imbibition. ![]() Spontaneous imbibition is an important mechanism of oil recovery in naturally fractured reservoirs.
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