DSP: a new instrument for estimation of the in-situ stress state at depth
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:7082984
The deep stress probe (DSP) is a hydraulically operated tool which is a combination straddle-packer and impression packer which can determine the orientation (inclination) and azimuth of induced fractures. Results are discussed of 2 field tests recently conducted in the Granite Mt. Quarry near Marble Falls, Texas, to determine in situ tectonic stresses. The experiments were performed in a 4-3/4-in. diam hole, 1,150 ft deep in granite. The borehole was fractured at various horizons, using different fracturing fluids to determine the most suitable system for future tests in hard rock. Downhole pressure readings were taken and oriented impression packers were used to determine the azimuth of the induced fractures. Results of the DSP tests are compared with earlier results obtained by overcoring. The results suggest that lateral stresses at the depths tested are less than may be inferred from the surface tests.
- Research Organization:
- Minnesota Univ.
- OSTI ID:
- 7082984
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-4246
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Experimental study of open-hole hydraulic fracturing as a stress measurement method--with particular emphasis on field tests
Journal Article
·
Thu Mar 31 23:00:00 EST 1983
· Int. J. Rock Mech. Min. Sci. Geomech. Abstr.; (United States)
·
OSTI ID:6983592
Experimental study of open-hole hydraulic fracturing as a stress measurement method with particular emphasis on field tests
Technical Report
·
Sat Oct 31 23:00:00 EST 1970
·
OSTI ID:5693310
Experimental study of open-hole hydraulic fracturing as a stress measurement method--with particular emphasis on field tests
Thesis/Dissertation
·
Wed Dec 31 23:00:00 EST 1969
·
OSTI ID:5720299
Related Subjects
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BOREHOLES
CAVITIES
COMMINUTION
FAILURES
FEDERAL REGION VI
FIELD TESTS
FRACTURES
FRACTURING
GRANITES
HYDRAULIC FRACTURING
IGNEOUS ROCKS
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICS
NORTH AMERICA
PLUTONIC ROCKS
ROCK MECHANICS
ROCKS
TECTONICS
TESTING
TEXAS
USA
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
BOREHOLES
CAVITIES
COMMINUTION
FAILURES
FEDERAL REGION VI
FIELD TESTS
FRACTURES
FRACTURING
GRANITES
HYDRAULIC FRACTURING
IGNEOUS ROCKS
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICS
NORTH AMERICA
PLUTONIC ROCKS
ROCK MECHANICS
ROCKS
TECTONICS
TESTING
TEXAS
USA