In-situ dynamic moduli of Mesaverde rocks compared to static and dynamic laboratory moduli
This paper focuses on tests performed on sandstones and shales from four gas wells in the Mesaverde formation. A previous document showed a comparison of the static and dynamic laboratory moduli. This publication describes how field velocity logs were used to derive field dynamic moduli. A 3-way comparison 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. 23 refs., 6 figs., 3 tabs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5960031
- Report Number(s):
- UCRL-94075; CONF-860609-1; ON: DE86006916
- Country of Publication:
- United States
- Language:
- English
Similar Records
Strength and static elastic moduli of Mesaverde rocks
Ultrasonic velocities and dynamic elastic moduli of Mesaverde rocks. Revision 1
Related Subjects
030200* -- Natural Gas-- Reserves
Geology
& Exploration
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
58 GEOSCIENCES
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BENCH-SCALE EXPERIMENTS
BULK DENSITY
COMMINUTION
COMPARATIVE EVALUATIONS
DATA
DENSITY
DESIGN
ELASTICITY
EXPERIMENTAL DATA
FIELD TESTS
FRACTURING
HYDRAULIC FRACTURING
INFORMATION
ISOTROPY
MECHANICAL PROPERTIES
NATURAL GAS WELLS
NUMERICAL DATA
PHYSICAL PROPERTIES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEISMIC P WAVES
SEISMIC S WAVES
SEISMIC WAVES
SHALES
SHEAR PROPERTIES
SONIC LOGGING
SOUND WAVES
TENSILE PROPERTIES
TESTING
ULTRASONIC WAVES
WAVE PROPAGATION
WELL LOGGING
WELLS