Abstract
The focal mechanisms of some one hundred microseismic events induced by various water injections have been determined. Within the same depth interval, numerous stress measurements have been conducted with the HTPF method. When inverted simultaneously, the HTPF data and the focal plane solutions help determine the complete stress field in a fairly large volume of rock (about 15×106 m3). These results demonstrate that hydraulically conductive fault zones are associated with local stress heterogeneities. Some of these stress heterogeneities correspond to local stress concentrations with principal stress magnitudes much larger than those of the regional stress field. They preclude the determination of the regional stress field from the sole inversion of focal mechanisms. In addition to determining the regional stress field, the integrated inversion of focal mechanisms and HTPF data help identify the fault plane for each for each of the focal mechanisms. These slip motions have been demonstrated to be consistent with Terzaghi's effective stress principle and a Coulomb friction law with a friction coefficient ranging from 0.65 to 0.9. This has been used for mapping the pore pressure in the rock mass. This mapping shows that induced seismicity does not outline zones of high flow rate but only zones of high pore pressure. For one fault zone where no significant flow has been observed, the local pore pressure has been found to be larger than the regional minimum principal stress but no hydraulic fracturing has been detected there.
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References
Bott, B. (1959),The Mechanics of Oblique Slip Faulting, Geol. Mag.96 (2), 109–117.
Bruel, D., andCornet F. H.,Force fluid through fractured reservoirs modelling. InFractured and Jointed Rock Masses (eds. N. G. W. Cook and L. Myer) (Lawrence Berkeley Lab Report LBL-32379, 3, 1992) pp. 519–526.
Cochard, A., andMadariaga, R. (1994),Dynamic Faulting under Rate-dependent Friction, Pure and Appl. Geophys142 (3/4), 419–445.
Cornet, F. H.,Experimental investigation on forced fluid flow through a granite rock mass. InFourth European Geothermal Update (eds. K. Louwrier, E. Staroste, and J. Garnish) (Kluwer Academic Pub. Dordrecht, Holland 1989) pp. 189–204.
Cornet, F. H.,In situ stress heterogeneity identification with the HTPF tool.In Rock Mechanics, Proc. 33 rd US Symposium on Rock Mechanics (eds. Tillerson and Wawersik) (Balkema, Rotterdam 1992) pp. 39–48.
Cornet, F. H., Hosanski, J. M., Bernaudat, F., andLedoux, E.,Shallow depth experimentation on the concept of energy extraction from deep hot dry rocks. InHydraulic Fracturing and Geothermal Energy (eds. S. Nemat-Nasser, H. Abe, and S. Hirakawa) (Martinus Nijhoff, The Hague 1982) pp. 385–403.
Cornet, F. H., andJulien, Ph. (1989),Stress Determination from Hydraulic Test Data and Focal Mechanisms of Induced Seismicity, Int. J. Rock Mechanics Min. Sci and Geomech. Abs26 (3/4), 235–248.
Cornet, F. H., Yin J., andMartel L.,Stress heterogeneity and flow path in a granite rock mass. InFractured and Jointed Rock Masses (eds. N. G. W. Cook, and L. Myer) (Lawrence Berkeley Lab. Report LBL-32379, vol. 1, 1992) pp. 80–87.
Cornet, F. H., andScotti, O. (1993),Analysis of Induced Seismicity for Fault Zone Identification, Int J. Rock Mech. Min. Sci. and Geomech. Abs.30 (7), 789–795.
Desroches, J., andCornet, F. H.,Channelling stiffness effects on fluid percolation in jointed rocks. InRock Joints (eds. N. Barton and O. Stephanson) (Balkema, Rotterdam 1990) pp. 527–534.
Fehler, M. C. (1989).Stress Control of Seismicity Patterns Observed during Hydraulic Fracturing Experiments at the Fenton Hill Hot Dry Rock Geothermal Energy Site, New Mexico, Int. J. Rock Mech. Min. Sci. and Geomech Abs.26, (3/4) pp. 211–219.
Gephart, J. W., andForsyth, D. W. (1984),An Improved Method for Determining the Regional Stress Tensor Using Earthquake Focal Mechanism Data: Application to San Fernando Earthquake Sequence, J. Geophys. Res.89, (B11), 9305–9320.
Herero, A., andBernard, P. (1994),A Kinematic Self-similar Rupture Process for Earthquakes, Bull. Seismol Soc. Am.84 (4), pp. 1216–1228.
House, L. (1987),Locating Microearthquakes Induced by Hydraulic Fracturing in Crystalline Rock, Geophys. Res. Lett.14, 919–921.
Julien, Ph., andCornet, F. H. (1987),Stress Determination from Aftershocks of the Campania-Lucania Earthquake of November 23, 1980, Ann. Geophys.5B (3), pp. 289–300.
McGarr, A. (1980),Some Constraint on Levels of Shear Stress in the Crust from Observations and Theory, J. Geophys. Res.85 (B11), pp. 6231–6238.
Mosnier, J., andCornet, F. H.,Apparatus to provide an image of the wall of a borehole during a hydraulic fracturing experiment. InFouth European Geothermal Update (eds. K. Louwrier, E. Staroste, and J. Garnish) (Kluwer Academic Pub., Dordrecht 1989) pp. 205–212.
Niitsuma, H., Nakatsuka, K., Takahashi, H., Abe, M., Chubachi, N., Yokoyama, H., andSato, R.,In situ AE measurements of hydraulic fracturing at geothermal fields. InHydraulic Fracturing and Geothermal Energy (eds. S. Nemat-Nasser, H. Abe, and S. Hirakawa) (Martinus Niijhoff, The Hague 1982) pp. 227–241.
Pearson, C. (1981),The Relationship between Microseismicity and High Pore Pressure during Hydraulic Stimulation Experiments in Low Permeability Granite Rocks, J. Geophys. Res.86, 7855–7864.
Pine, R. J., andBatchelor, A. S. (1984),Downward Migration of Shearing in Jointed Rock during Hydraulic Fracturing, Int. J. Rock Mechanisc Min. Sci. and Geomech. Abs.21, 249–263.
Rice, J. (1993),Spatio-temporal Complexity of Slip on a Fault, J. Geophys. Res.98 (B6), 9885–9907.
Riveira, L., andCisternas, A. (1990),Stress Tensor and Fault Plane Solutions for a Population of Earthquakes, Bull. Seismol. Soc. Am.80 (3), 600–614.
Robinson, L. H., andHolland, W. E.,Some Interpretation of pore fluid effects in rock failure. InRock Mechanics—Theory and Practice, Proc. 11th Symp. on Rock Mech. (ed. W. H. Somerton) (Soc. Min. Eng., Am. Ins. Min. Met. Pet. Eng., New York 1970) pp. 585–597.
Scotti, O., andCornet, F. H. (1994a),In situ Evidence for Fluid Induced Aseismic Slip Events Along Fault Zones, Int. J. Rock Mech. Min. Sci. and Geomech. Abs.31 (4), 347–358.
Scotti, O., andCornet, F. H. (1994b),In situ Stress Fields and Focal Mechanism Solutions in Central France, Geophys. Res. Lett.21 (22), 2345–2348.
Talebi, S., andCornet, F. H. (1987),Analysis of the Microseismicity Induced by a Fluid Injection in a Granite Rock Mass, Geophys. Res. Letts.14 (3), 227–230.
Vasseur, G., Etchecopar, A., andPhilip, H. (1983),Stress StateInferred from Multiple Focal Mechanisms, Ann. Geophys.1, 291–297.
Wallace, R. E. (1951),Geometry of Shearing Stress and Relation to Faulting, J. Geology59, 118–130.
Yin, J.,Détermination du Champ de Contrainte Régional à Partir de Mesures Hydrauliques et de Mécanismes au Foyer de Microséismes Induits, Thèse de Doctorat de l'Univ. Paris VII et de l'Inst. Phys. Globe de Paris 1994.
Yin, J., andCornet, F. H. (1994),Integrated Stress Determination by Joint Inversion of Hydraulic Tests and Focal Mechanisms, Geophys. Res. Lett. 29 (24) 2645–2648.
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Cornet, F.H., Jianmin, Y. Analysis of induced seismicity for stress field determination and pore pressure mapping. PAGEOPH 145, 677–700 (1995). https://doi.org/10.1007/BF00879595
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DOI: https://doi.org/10.1007/BF00879595