Prediction of hydraulic fracture azimuth from anelastic strain recovery measurements of oriented core
A reliable method of predicting the azimuth of massive hydraulic fractures is of great importance to the gas industry in developing low permeability reservoirs. Knowledge of the fracture azimuth would allow optimum location and spacing of wells in a developing field and thus could increase recoveries an additional 30% of the total reservoir. In order to predict the azimuth of a hydraulic fracture it is necessary to know the direction of the minimum horizontal in-situ stress, because a hydraulic fracture propagates perpendicular to this stress direction. In this study an anelastic strain recovery technique is presented as a method of determining the directions and ratio of the maximum and minimum horizontal in-situ stresses from oriented cores from deep wells and thus enable prediction of the fracture orientation.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5235495
- Report Number(s):
- SAND-82-0351C; CONF-820803-1; ON: DE82007762
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
AZIMUTH
COMMINUTION
DRILL CORES
ELASTICITY
FAILURES
FRACTURES
FRACTURING
HYDRAULIC FRACTURING
MECHANICAL PROPERTIES
NATIONAL ORGANIZATIONS
NATURAL GAS WELLS
NEVADA TEST SITE
PERMEABILITY
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SHALES
STRESS ANALYSIS
STRESSES
TENSILE PROPERTIES
TUFF
US DOE
US ORGANIZATIONS
WELL SPACING
WELLS