For some of the EOS models the dimension of equilibrium problem can be reduced. Stability and difficulties in implementation are among the problems of flash calculation. In this work, a new reduction technique is presented to prepare a reduced number of equilibrium equations. Afterwards, a number of appropriate solution variables are selected for the prepared equation system to solve the equati...

Experience with material-balance data sets from the field and from simulation has revealed some procedures that can be used to improve analysis of both oil and gas reservoirs: • Failure to account for a weak waterdrive can result in significant material-balance errors. • The assertion of previous authors that weak waterdrive exhibits a negative slope on the Cole (gas) and Campbell (oil) plots h...

We develop and implement a ring-based parallel 3-D oil-phase homogeneous isotropic reservoir simulator and study its performance in terms of speedup as a function of problem size. The ring-based approach is shown to result in significant improvement in speedup as the problem size increases. This improvement stems from the reduction in communication costs inherent in a ring-based approach. The s...

We propose a pore-to-reservoir simulation approach for singlephase flow. Transport is modeled as a continuous-time random walk (CTRW). Particles make a series of transitions between nodes with a probability c(t)dt that a particle will first arrive at a node from a nearest neighbor in a time t to t+dt. A top-down multiscale approach is used to find the flow field. At the micron scale, c(t) for p...

This paper proposes the Marine Predators algorithm (MPA) linked with reservoir simulation model and considering sedimentation, in order to improve rule curves. The release criteria of hedging (HR) standard operating policy (SOP) were investigated this study. results showed that patterns new optimal curves from MPA technique sedimentation using HR practically useful study, as SOP those existing ...

This paper introduces a multiobjective reinforcement learning approach which is suitable for large state and action spaces. The approach is based on actorcritic design and reservoir computing. A single reservoir estimates several utilities simultaneously and provides their gradients that are required for the actor enabling an agent to adapt its behavior in presence of several sources of rewards...

The numerical simulation of the dynamic interaction between hydrocarbon reservoirs and wells has been an object of study for over three decades. Such a coupled approach is necessary to solve a variety of dynamic flow problems, such as pressure transient analysis (well testing) with wellbore storage, liquid loading, near-well reservoir clean-up, unstable gas lift, or the development of smart wel...

In seismic interpretation with fluid flow simulation, we construct simple reservoir models with a small number of flow units, such as geologic layers and fault blocks. We call these units tanks and connect them with tubes. For such simple models, we may interactively adjust reservoir properties, such as porosities of tanks and transmissibilities of tubes. Numerical experiments suggest that para...

Grieve oil field, discovered in 1954, is located in southeastern Wind River Basin, central Wyoming. This Lower Cretaceous, valley-fill and channelized, Muddy sandstone reservoir is a stratigraphic/structural trap with an average structural dip of 15 degrees. Multiple recovery mechanisms have contributed to produce more than 30 million barrels of premium light sweet crude, including gas expansio...