Determination of rock mass deformation modulus during hydraulic fracturing
This paper presents the results from prototype testing of a new device developed to determine the rock mass deformation modulus during hydraulic fracturing stress measurements. The tool combines a modified US Bureau of Mines borehole deformation gage and standard hydraulic fracturing straddle packers to allow displacement measurements of the borehole wall along the diametrical axes in the pressurized test interval. The deformation modulus is evaluated through utilization of a closed-form elastic solution for a thick-walled cylinder, and the magnitudes and orientations of the in situ stress field are concurrently determined by conventional methods. Enhancement of hydraulic fracturing data interpretation may also be possible by using borehole displacement measurements to monitor induced fracture propagation and improve the definitiion of breakdown, fracture reopening, and shut-in pressures. 13 refs., 7 figs., 1 tab.
- Research Organization:
- Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations
- DOE Contract Number:
- AC06-77RL01030
- OSTI ID:
- 5534254
- Report Number(s):
- RHO-BW-SA-412P; CONF-850671-20; ON: DE85014938
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of displacement and strain data for the determination of the in-situ deformability of rock masses
Laboratory hydraulic fracturing stress measurements in salt
Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580300 -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BASALT
BOREHOLES
CAVITIES
COMMINUTION
DATA
DEFORMATION
EQUIPMENT
EXPERIMENTAL DATA
FRACTURING
HANFORD RESERVATION
HYDRAULIC FRACTURING
IGNEOUS ROCKS
INFORMATION
MEASURING METHODS
MECHANICS
NATIONAL ORGANIZATIONS
NUMERICAL DATA
ROCK MECHANICS
ROCKS
STRAINS
STRESSES
TESTING
US DOE
US ERDA
US ORGANIZATIONS
VOLCANIC ROCKS