... in a closed reservoir, and could be applied in the case of non-fractured reservoirs. I present some guidelines to handle this problem in numerical simulation attempts. The reason is because most numerical simulators will raise an "error flag" if an engineer attempts to input more than one contact within...

... Abstract This paper presents the results of a study on the development of efficient methods for scaling of petrophysical properties from high resolution geological models to the resolution of reservoir simulation. These methods were evaluated using the data for Gypsy field located...

... Abstract The experimental studies carried out to evaluate oil recovery processes let optimum strategies be determined and necessary actions be taken before initiating a new project. Numerical simulators can, sometimes, perform same tasks in a much more economical and faster way, with many...

... Abstract The use of artificial lift methods is generally required at some stage during the life of a reservoir. The phenomenological models for simulating the performance of artificial lift systems for designing and optimizing operations usually assume steady-state flow conditions...

... Abstract A steam injection reservoir simulator was developed with the objective of improving the resolution of the information concerning the flow around a well and between wells. To accomplish this objective, it was necessary to develop the contiguous hyperhybrid grid refinement method...

... Abstract Recent improvements in the speed of numerical compositional simulators has made it possible to use a large number of gridblocks to model condensate reservoirs, volatile reservoirs, and gas injection projects. This paper discusses techniques for choosing pseudo components so as to use...

... situations. A specialized three-dimensional, single-phase simulator was developed for this purpose. A closed, box-shaped reservoir was considered with a horizontal well A detailed sensitivity study of transient pressure responses is presented with respect to grid size, well location in different directions...

... Abstract Peaceman defined the well-block pressure obtained from reservoir simulation/or equally spaced grids as the steady state flowing pressure at the equivalent radius and he found that an equivalent radius occurring at a distance of 0.2 times the grid spacing from the center of the well...

... Abstract The possibility of using polymer gels for improved conformance in the treatment of producer wells has been evaluated using computer simulation. A radial model was built and used to test a variety of immiscible displacement conditions. The tests included water influx in a layered...

... reservoir pressure decline and with lower GOR's than what is predicted by reservoir simulators using conventional black oil fluid properties. One mechanism theorized to account for the observed performance is that the oil from these foamy oil reservoirs entrains the solution gas liberated when...

... simulator point pressure stimulation wellbore annual technical conference foamy oil drilling operation neill acid wash bubble point pressure aromatic solvent squeeze directional drilling STIMULATION OF HORIZONTAL WELLS USING DIVERTED ACID TREATMENTS K. WILLIAMSON C. RANDAL J. STADLWIESER F...

... Abstract Numerical simulators are often used to aid the study of the factors influencing the unstable miscible displacement processes. One of the deficiencies of the conventional compositional reservoir simulators for predicting the unstable displacement process is that these simulators all...

... reservoir volume. This paper presents numerical simulation results of such a process for Alaskan tar sand reservoirs using a horizontal well simulator. Numerical simulation resulls show oil recovery as high as 40% of the oil in place for tar sands. The recovery is even higher for heavy oil of moderate...

.... The intricacy of a miscible flood project magnifies the complexity of an evaluation. Frequently, time and budget constraints placed on an analyst rule out the possibility of a complete simulation study to aid with an evaluation. Thus there has to be considerations that sUPPOI1 the development of an evaluation...

... of gas on the surface of the coal to be modeled as gas dissolved in an immobile oil. Conventional reservoir simulators can then be used for coal bed methane modeling purposes. The solution gas-oil ratio of this immobile "pseudo" oil is calculated from the Langmuir adsorption isotherm constants and coal...

... for fracture gradient, frictional pressure, or hydrostatic pressure---all of which contribute to the actual downhole squeeze pressure. Computerized simulation of squeeze cementing operations, which allows operators to take into account various well parameters, has recently been developed. Based on fluid...

... Abstract The key mechanisms of two-phase gas-water flow through coal beds as utilized in a new three-dimensional finite-difference simulator, COMETPC 3-D, are presented. The theory for gas transport through coal matrix, transfer of gas from matrix to fracture, and the adsorption isotherm...

... Abstract Reservoir Simulation using two different computer systems is investigated: Wizard Adapter - an Intel i860 implemented on a micro channel card. The adapter was installed in an IBM PS/2 Model 80. RISC System/6000 - IBM's second generation RISC workstation series. A reservoir...

... Abstract A detailed simulation study of three-dimensional laboratory experiments, representing steamflooding in a tar sand reservoir underlain by a communicating water zone was conducted to validate a thermal simulator and to delineate important process effects. Four experiments which included...

... Abstract Several important reservoir engineering aspects of gas condensate well performance are investigated using an IMPES (Implicit Pressure Explicit Saturation) compositional simulator which employs a modified Redlich Kwong Equation of State to describe phase equilibria. These aspects...