Determination of in situ stress from anelastic strain recovery measurements of oriented core: comparison to hydraulic fracture stress measurements in the Rollins Sandstone, Piceance Basin, Colorado
A method to determine in situ stress directions and magnitudes from anelastic strain recovery measurements of oriented core has been used to determine the principal horizontal in situ stresses in the Rollins Sandstone in a deep well near Rifle, Colorado. The principal horizontal stress directions were determined directly from the principal horizontal strain recovery directions. The principal horizontal stress magnitudes were calculated from the principal strain recovery magnitudes, overburden stress, and Poisson's ratio of the rock using a viscoelastic model. The accuracy of the in situ stress directions and magnitudes determined from anelastic strain recovery measurements was substantiated by a direct comparison with open-hole hydraulic fracture stress measurements. The anelastic strain recovery method predicted the magnitudes of the maximum and minimum horizontal principal stresses to be 54.5 MPa and 51.9 MPa, respectively; with an azimuth of N63/sup 0/W +- 8/sup 0/ for the maximum horizontal stress. The hydraulic fracture stress measurements yielded maximum and minimum horizontal principal stress magnitudes of 49.6 MPa and 46.8 MPa, respectively. The azimuth of the maximum horizontal stress ranged from N50/sup 0/W to N70/sup 0/W. 17 references, 2 figures, 4 tables.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7149507
- Report Number(s):
- SAND-84-0512C; CONF-840633-7; ON: DE84009523
- Country of Publication:
- United States
- Language:
- English
Similar Records
In situ stress measurements in inclined holes in the North Sea: application to enhanced oil recovery
In situ stress measurements in inclined holes in the North Sea: Application to water flooding and enhanced oil recovery
Related Subjects
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
58 GEOSCIENCES
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
COLORADO
COMMINUTION
COMPARATIVE EVALUATIONS
DATA
DRILL CORES
EXPERIMENTAL DATA
FAILURES
FEDERAL REGION VIII
FRACTURES
FRACTURING
HYDRAULIC FRACTURES
HYDRAULIC FRACTURING
INFORMATION
MEASURING METHODS
NORTH AMERICA
NUMERICAL DATA
ORIENTATION
PICEANCE CREEK BASIN
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRESS ANALYSIS
STRESSES
USA