Wettability

Construction of synthetic carbonate plugs: A review and some recent developments

“…In cases where a solid possesses connected pores, the presence of smaller particles occupying the empty spaces, as well as high degrees of compaction and cementation, generally reduce the permeability. This can be corroborated by the mathematical equation by Darcy for the flow of a fluid in a porous medium, by studying the pressure gradients [89,90].…”

“…According to reference [89], petrophysical properties of rocks depend on the particle size, amount of cementation and compaction. For this reason, the next analyses from this literature review will be focused on these parameters.…”

“…Empty spaces called pores are generated between these particles, and fluids, such as oil and gas, can be stored in these spaces in reservoir rock. The measurement of this empty space, commonly known as porosity, is defined by the relation between the volume of the empty space and the bulk volume of the sample (where pore volume is dependent on the volume of particle, and therefore also dependent on its size) and calculated using equation (1) [89,90]…”

Improving the simulation of a waterflooding recovery process using artificial neural networks

“…• Permeability: 37 mD These experimental values of capillary pressure were adjusted to account for the presence of oil instead of air, using the following expression: 13 Pccorr = Pcexp x (σw-o/σw-a)…”

“…Since no PVT data were available for the field, these were computed using correlations. 13 The known quantities for the field were the oil API gravity and viscosity, the formation temperature, the water viscosity. The PVT properties used in the program are summarized in tables 3.7 through 3.9 for oil, water and gas.…”