Generation and testing of random fields and the conditional simulation of reservoirs
Three methods have been reported by which random fields can be generated to represent permeability fields for use in reservoir simulation. Because these fields would be the basis of the simulations, it is essential that the procedure of their generation, and the qualifications of the methods themselves, should be investigated closely. There seem to have been no attempts reported to identify the general characteristics needed by which to qualify a particular method for this use. The methods that are considered to generate random fields in this study are: the Fast Fourier Transform Method (FFTM) developed by Gutjahr; the Source Point Method (SPM) introduced by Heller; and the Turning Bands Method (TBM) which was originated by Matheron and further developed by Montoglou and Wilson. A structural analysis, that takes spatial correlations into consideration, has been performed on these three methods. For most reservoirs, permeability has been reported to be distributed log-normally. In this work, the Kolmogorov-Smirnov normality test was performed on each of the three methods. It was noted that a normality test alone is not a sufficient criterion by which to select a particular method for the generation of a random field. To this must be coupled a structural analysis, so that spatial correlations can be considered. Geostatistical techniques, kriging, and conditioned simulation are used on the generated fields. These techniques take into account the actual measured data taken from laboratory or field tests. 10 refs., 14 figs., 1 tab.
- Research Organization:
- New Mexico Inst. of Mining and Technology, Socorro, NM (USA). New Mexico Petroleum Recovery Research Center
- Sponsoring Organization:
- DOE/FE; NMRDI
- DOE Contract Number:
- FC21-84MC21136
- OSTI ID:
- 6843493
- Report Number(s):
- CONF-9006215-1; ON: DE90013467
- Resource Relation:
- Conference: International technical meeting of Petroleum Society of CIM/SPE, Calgary (Canada), 10-13 Jun 1990
- Country of Publication:
- United States
- Language:
- English
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