Across
- 4. Are formed in the direction perpendicular to the least stress.
- 5. That will occur at depths less than approximately 2000ft.
- 6. Are also the most reliable for determining in situ stress in deep formations.
- 8. This zone will limit the vertical growth of a fracture.
Down
- 1. Would be one where the values of in situ stresses obtained from injection tests and those calculated from logs and core analysis all result in a consistent stress profile.
- 2. Is a key factor for determining hydrocarbon or thermal energy recovery sweep efficiency in an underground reservoir.
- 3. Appear in the rocks as narrow zones of structural discontinuity (loss of cohesion) that are the product of mechanical rupture.
- 7. This should involve the optimization of operational parameters, such as the viscosity of the fracturing fluid, injection rate and duration, proppant concentration, etc.