StressTester (a module in TrapTester)
Fault-seal analysis is mainly concerned with the leakage of hydrocarbons across a fault. In tectonically active regions, faults can be breached by fracturing. Field studies show that faults reactivated under recent in-situ stress conditions can enhance fluid migration. One key criterion for fluid flow is that the fault be critically stressed and close to frictional failure.
The likelihood of dynamic failure/fault reactivation and possible seal breach can be assessed using the StressTester module given the knowledge of the contemporary stress field, fault orientation and mechanical properties of the fault rocks.
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Key Features: |
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Integration |
StressTester is integrated into TrapTester providing a single environment for data access, visualization and export of results. |
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Stress modelling |
Standard relationships (e.g. Slip Tendency, Fracture Stability) and proprietary calibrations to predict the likelihood of fault reactivation in the contemporary stress field are incorporated. All geomechanical attributes can be computed on Fracture Networks derived from FaultED attributes |
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Visualization |
The StressTester implementation embodies a whole new graphical interface incorporating 3D Mohr diagrams and lower hemisphere stereonet plots for displaying the current stress field and fault orientations. |
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Key Benefits: |
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Derive ranking criterion for fault stability |
Empirical relationships between geomechanical attributes and leaking faults provide a method to categorize trap-bounding faults according to their reactivation risk and potential loss of hydrocarbons. |
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