Use of pressure transient data to estimate permeability variograms
- and others
Variograms for permeability are typically calculated using well log and core measurements, if they are calculated at all. Such procedures are inadequate to estimate variograms for horizontal permeability as they yield almost no information about the short lag structure of the variogram. A well test samples a much larger region of the reservoir than log and mm measurements and thus, well test responses are potential sources of data for estimating the horizontal permeability variogram. We established the feasibility of calculating this variogram from a single set of well test data. Here we summarize further research on estimating horizontal permeability variograms from well test data. Our major focus in this paper is on improving horizontal variogram estimates by combining responses from tests on a number of different wells. We also address a few issues related to variogram estimation from single well test data. All work presented here is based on simulated well test data using permeability distributions generated with an imposed correlation structure and level of heterogeneity.
- OSTI ID:
- 207292
- Report Number(s):
- CONF-951002-; TRN: 96:000704-0051
- Resource Relation:
- Conference: Annual meeting of the Society of Petroleum Engineers (SPE), Dallas, TX (United States), 22-25 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Formation evaluation and reservoir geology. 1995 SPE annual technical conference and exhibition; PB: 1010 p.
- Country of Publication:
- United States
- Language:
- English
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