... on the trained network, we developed a forward modeling (prediction) module in a compositional simulator. Therefore, during the simulation run, the phase behavior of the multicomponent system within each grid block at each iteration is obtained by simple interpolation from the forward module. Our standalone...

... and then changes dramatically the fluid phase behavior and its thermodynamic properties. Pressure-Vapor-Temperature ( PVT ) modeling of such fluids becomes therefore a challenge in order to get accurate production forecast reservoir simulations. Furthermore along the flow from the matrix to the well through...

... Abstract The fluid phase behavior in shale reservoirs differs from the conventional fluid phase behavior because of the nanopores in shale rock. In many shale oil reservoirs, the producing gas-oil ratio (GOR) is significantly higher than what would be produced from a bulk-state conventional...

... is computationally intensive because of the large number of unknowns and the strong nonlinear interactions. Thus, there is a great need for upscaling methods of compositional processes. The complex multiscale interactions between the phase behavior and the heterogeneities lie at the core of the difficulty...

...,w is the amount of surfactant in the aqueous phase and N s is the total amount of surfactant. Eq. (4) is used to determine the moles of surfactant in the pseudo oil and water phases for Type III phase behavior. The amount of surfactant in the pseudo oil phase is proportional to the volume of oil...

... Abstract Alkali-surfactant-polymer (ASP) floods can recover significant amounts of remaining oil after a water flood. Currently, commercial and academic chemical flooding simulators use Hand's model and linear interpolation rules based on a salinity scan to model micro-emulsion phase behavior...

...) . This is because hydrocarbon flash is supposed not to be affected by the surfactant flash according to the common assumption made for our four phase flash algorithm. In this specific case, with decrease of β s , the surfactant phase behavior becomes away from optimal condition moving toward phase type II(+). All...

..., gas and surfactant. The other phase pressures are computed by adding the capillary pressure between phases. The microemulsion phase behavior depends on the effective salinity. Surfactant phase behavior modeling is based in part on the Hand representation of the ternary phase diagram ( Hand, 1939...

... of unconventional reservoir rocks, such as shale and tight rocks, are on the order of nanometers. The thermodynamic phase behavior of in-situ hydrocarbon mixtures in such small pores is significantly different from that of bulk fluids in the PVT cells, primarily due to effect of large capillary pressure...

... interfacial tension at the critical point. Pressure-composition plots of Bakken oil are presented for three different effective pore sizes and are used to represent compositionally-extended black-oil phase behavior on a ternary diagram where water is included as a separate component. A fourth component...

.../microemulsion, co-existing at equilibrium and implemented using original framework of the IMPES chemical flooding simulator. This model represents a new method to couple black oil model with chemical phase behavior i.e. Hand's rule. Hand's rule is used to capture the equilibrium among surfactant, oil, and water...

... of heavy oil recovery. Reservoir compositional models that are currently in use rely on cubic equations of state for asphaltene precipitation. The cubic equations, despite their relative reliability in describing reservoir fluids phase behavior, become unreliable in asphaltene-rich phase description...

... methods for compositional flow are needed. Compared with black-oil models, the interactions between the thermodynamic phase behavior and the sub-grid heterogeneities that are associated with compositional displacements pose significant additional challenges to upscaling. We introduce a new framework...

... ( Petroleum Experts, 2012 ) is a full field reservoir simulator from Petroleum Experts with capability for modeling surfactant phase behavior and also mobility control which includes both polymer and gel options. The surfactant module is similar to that in UTCHEM and can define different phase behavior (Type...

... Abstract Enhanced Oil Recovery (EOR) processes usually involve complex phase behaviors between the injected fluid (e.g., steam, hydrocarbon, CO 2 , sour) and the in-situ rock-fluid system. Several fundamental questions remain regarding equation-of-state computations for mixtures than can form...

... a full mechanistic model of ASP flooding was developed and validated, a simplified ASP model was implemented in a 3D chemical flooding reservoir simulator. In the simplified ASP model, the amount of soap is calculated using the total acid number of the crude oil. A phase behavior mixing rule model...

...Summary and Conclusions The capability of the chemical module of GPAS, which is a fully implicit, parallel EOS compositional simulator, was enhanced by utilization of comprehensive oil/brine/surfactant phase behavior. This improvement removes the previous limitation to Type I floods...

... Phase behavior, that is the transfer of components between phases, adds further complexity to compositional and thermal processes. In lack of better alternatives we shall assume thermodynamic equilibrium conditions. How to numerically treat the interaction of phase behavior with kinetics...

... but to a lesser degree. We feel more confident in the ENO-3 scheme because it accuractely models phase behavior near equal eigenvalue points. Conclusions The tests and analysis presented here suggest the following: Compositional finite difference schemes must accuarately resolve the effects of phase...

...-miscible simulator does not have all the phase-behavior mechanisms of a compositional simulator. phase-behavior mechanisms of a compositional simulator. This paper presents a novel approach for modelling unstable displacements in a fully compositional model. The method distinguishes two flow regions...