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Figure 1: (a) Map view showing a treatment well and two mornitor wells, and five hypothetical sources (solid circles) along an assumed fracture (dashed line).
- Geology > Rock Type (0.70)
- Geology > Structural Geology > Tectonics > Plate Tectonics (0.35)
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
Patterns of microearthquakes detected downhole defined However, widths of the stimulated zones differed by a fracture orientation and extent in the Austin chalk, factor of five between the two Austin chalk sites, Giddings field, TX and the 76 field, Clinton Co., KY. Post-stimulation production was much higher hydraulic stimulation at two sites in the Austin chalk, and from the wider zone. At Clinton Co., microearthquakes over 3200 during primary production in Clinton Co. defined low-angle, reverse-fault fracture zones above and Data were of high enough quality that 20%, 3 1% and below a producing zone. Associations with depleted 53% of the events could be located, respectively. Drilling showed that the stimulated depths at the base of the Austin chalk.
- Europe > Norway > North Sea > Central North Sea (0.44)
- North America > United States > Texas > Lee County (0.28)
- North America > United States > Texas > Fayette County (0.28)
- (3 more...)
- North America > United States > Texas > East Texas Salt Basin > Giddings Field > Austin Chalk Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Tor Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Ekofisk Formation (0.99)
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (0.53)
- Reservoir Description and Dynamics > Reservoir Characterization > Faults and fracture characterization (0.37)
Patterns of microearthquakes detected downhole defined However, widths of the stimulated zones differed by a fracture orientation and extent in the Austin chalk, factor of five between the two Austin chalk sites, Giddings field, TX and the 76 field, Clinton Co., KY. Post-stimulation production was much higher hydraulic stimulation at two sites in the Austin chalk, and from the wider zone. At Clinton Co., microearthquakes over 3200 during primary production in Clinton Co. defined low-angle, reverse-fault fracture zones above and Data were of high enough quality that 20%, 3 1% and below a producing zone. Associations with depleted 53% of the events could be located, respectively. Drilling showed that the stimulated depths at the base of the Austin chalk.
- North America > United States > Texas > Lee County (0.64)
- North America > United States > Texas > Fayette County (0.64)
- North America > United States > Texas > Burleson County (0.64)
- (4 more...)
- North America > United States > Texas > East Texas Salt Basin > Giddings Field > Austin Chalk Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Tor Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Ekofisk Formation (0.99)
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (0.53)
- Reservoir Description and Dynamics > Reservoir Characterization > Faults and fracture characterization (0.37)
Summary This work introduces a numerical algorithm for solving wave propagation in the presence of an imperfect contact between two isotropic, elastic and heterogeneous media. Non-ideal interfaces of general type can be modeled as boundary discontinuities of the displacement and its first time derivative the particle velocity . The stress field is continuous, and the quantity where the brackets denote 6iscontinuities across the interface, is equal to the corresponding stress component. The specific stiffness introduces frequencydependence and phase changes in the interface response. On the other hand, the specific viscosity is related to the energy loss.
- Geophysics > Borehole Geophysics (0.99)
- Geophysics > Seismic Surveying > Seismic Processing (0.48)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
- Well Completion > Hydraulic Fracturing (0.95)
BG 1.6 Fracture development during cuttings injection determined by passive seismic monitoring Summary In late 1993, approximately 4 million pounds of simulated waste solids were injected at a depth of 4500 ft into the Lower Frio sands near Jasper, Texas. Over a 5 day period 2400 seismic events were recorded. The injection was made in 4 cycles; a data frac, and three, equal volume injections each lasting approximately 24 hours. The spatial and temporal distribution of seismicity induced during the injection is complex and departs from the expected behavior for simple failure in brittle material. We propose that the batch injection of mud-laden solids into a soft formation causes failure through multiple mechanisms.
- Geology > Geological Subdiscipline > Geomechanics (0.90)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock (0.31)
- North America > United States > Texas > Frio Formation (0.99)
- North America > United States > Texas > East Texas Salt Basin > East Texas Field > Woodbine Formation (0.97)
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management (1.00)
Subhorizontal fracturing or bedding appear to have a more significant and variable Intersecting fracture sets exist in natural fracture systems, influence on the fracture strike.
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Naturally-fractured reservoirs (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Faults and fracture characterization (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (0.98)
A similarity between various approaches for determining the Basic equations effects of fractures or cracks on the seismic wave propagation is found. Fractures may be modeled using infinite planes with In the presence of fractures, the average strain in an elastic a linear slip condition giving rise to the definition of homogeneous solid cube with length L and volume V macroscopic fracture compliances.
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (0.70)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Naturally-fractured reservoirs (0.50)
Further, we consider a model consisting of a shale over a Approximate scattering matrix vertically fractured sandstone.
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (0.80)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Naturally-fractured reservoirs (0.51)