Comparison of in situ dynamic moduli and laboratory moduli of Mesaverde rocks
Mechanical and sonic tests were performed on sandstones and shales from four gas wells in the Mesaverde formation. A previous publication showed a comparison of the static and dynamic laboratory moduli. This paper describes how field velocity logs were used to derive field dynamic moduli, and it sho...
Saved in:
| Published in | International journal of rock mechanics and mining sciences & geomechanics abstracts Vol. 24; no. 4; pp. 257 - 263 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.08.1987
|
| Online Access | Get full text |
Cover
Loading…
| Summary: | Mechanical and sonic tests were performed on sandstones and shales from four gas wells in the Mesaverde formation. A previous publication showed a comparison of the static and dynamic laboratory moduli. This paper describes how field velocity logs were used to derive field dynamic moduli, and it shows the 3-way comparison which was then performed for these stiffness properties. The results show no agreement between the three sets of values; differences between dynamic stiffness coefficients from the field and the laboratory exceed 200%; differences between static and dynamic coefficients range up to 600%. In turn, this indicates that a reliable method of estimating mechanical rock properties for hydraulic fracturing design has not been established, and that such a task should be pursued. |
|---|---|
| ISSN: | 0148-9062 |
| DOI: | 10.1016/0148-9062(87)90180-X |