...James C. Frauenthal; Roland B. di Franco; Brian F. Towler A generalization of upstream weighting is proposed as a method for reducing grid-orientation effects in reservoir simulation. For the two sample problems studied, a piston-flow waterflood and a realistic gas injection, the grid-orientation...

... and provides several alternatives upon which management could base such decisions. A three-dimensional (3D), three-phase reservoir simulator is interfaced with a surface facility network simulator. The results are used in determining an integrated field development and operating plan for producing an onshore...

...Barry Rubin; W. Lloyd Buchanan This paper describes a fully implicit four-phase (oil, water, gas, solid fuel) numerical reservoir model for simulating hot water injection, steam injection, dry combustion, and wet combustion in one, two, or three dimensions and in either a Cartesian, radial...

...A. S. Odeh Scaling factors for the proper application and interpretation of field-determined skin effect and pressure buildup values for use in simulators are derived. Reservoir engineering calculations for the actual well are based on a continuous physical system and the total effective formation...

...Curtis A. Chase, Jr.; Michael R. Todd A multicomponent, three-phase, three-dimensional (3D) reservoir simulator has been developed for predicting miscible flood performance with particular emphasis on CO 2 flooding. Several features, not all normally found represented in either a black-oil...

..., pressure level, and energy and flow characteristics resulting from the existence of microchannels. All these modifications were incorporated successfully into a conventional numerical thermal simulator. The new model provided an excellent match for all the field observations (steam-injection pressure, oil...

...Jamal Hussein Abou-Kassem; Khalid Aziz Numerical simulation of complex processes in oil reservoirs has become a standard tool. The grid size and timestep sensitivity of a simulator are of prime concern in reaching the correct conclusions in any study. This paper presents an analysis...

...G. W. Thomas; D. H. Thurnau This paper deals with a new implicit method for reservoir simulation. Rather than provide a fixed degree of implicitness in every gridblock at every time step or iteration, the adaptive implicit method operates with different levels of implicitness in adjacent gridblocks...

... at a constant velocity, suggesting the vertical growth of a permeable hot zone. This vertical movement can be modeled approximately with a thermal simulator. Comparison of numerical and analytic solutions, however, shows that very small finite-difference grid spacing is required to obtain the correct steam rise...

... approach to the simulation of geothermal reservoirs. Use of this approach in a one-dimensional (ID) finite-difference simulator yields results that can be compared with a traditional numerical scheme. 22 7 1981 4 4 1983 12 11 1982 1 8 1983 1 8 1983 Copyright 1983, Society...

...James R. Gilman; Hossein Kazemi Simulation of multiphase flow in heterogeneous two-porosity reservoirs such as naturally fractured systems is a difficult problem. In the last several years much progress has been made in this area. This paper focuses on the practical aspects of that technology...

..., steam-injection projects in the field, and calculations with a numerical reservoir simulator. From the good agreement with the new calculation method it would seem that the shape of a steam zone is controlled mainly by one group of parameters including steam-injection rate, pressure, and effective...

...D. K. Ponting; B. A. Foster; P. F. Naccache; M. O. Nicholas; R. K. Pollard; J. Rae; D. Banks; S. K. Walsh This paper describes Program for Oil Reservoir Simulation (pores), an efficient general-purpose black-oil simulator now in production use for modeling North Sea fields. The fully implicit...

...M. Anis; M. K. Hwang; A. S. Odeh A study of the sensitivity of results from an in-situ combustion simulator to key parameter variations was made. The model was based on the finite-difference method of solution and accounted for the kinetics of the combustion process. The parameters were block size...

...John Fagley; H. Scott Fogler; C. Brent Davenport; R. S. Millhone An improved simulation for temperature logs (TL's) in water injection wells is described. Improvements based on the reduction of assumptions used by previous investigators are demonstratedby comparison of field data and simulator...

...Larry W. Lake; James R. Johnston; George L. Stegemeier This paper presents a performance prediction technique for the response of a large-scale chemical flood. The technique involves the sequential use of a detailed finite difference simulator and a streamtube program. Although approximate...

... emphasis on the computational requirements of the methods. If the simulator consists of a set of N ordinary differential equations for the grid-block variables (e.g., pressures) and there are M parameters for which the sensitivity coefficients are desired, the ratio of the computational efforts...

...Russell H. Trimble; A. E. McDonald WELCOS is a robust, three-dimensional, three-phase well coning simulator that couples the well rate equation to the reservoir flow equations. This strong coupling allows well rate to be determined simultaneously with reservoir pressures and saturations...

...John E. Chappelear; Alexander S. Williamson A reservoir simulation system uses an analytical model to represent flow within a grid block as it enters or leaves a well. This model is called a well model. This paper presents a succinct but comprehensive description of the installation of a well model...

...Alexander S. Williamson; John E. Chappelear A reservoir simulation system uses an analytical model to represent flow within a grid block as it enters or leaves a well. This model is called a well model. We give a description here of the theoretical background of a well model, including how...