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METHOD FOR DETERMINING MAXIMUM HORIZONTAL STRESS MAGNITUDE AND DIRECTION IN A SUBSURFACE FORMATION
METHOD FOR DETERMINING MAXIMUM HORIZONTAL STRESS MAGNITUDE AND DIRECTION IN A SUBSURFACE FORMATION
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机译:确定地下地层中最大水平应力幅度和方向的方法
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摘要
A method for determining maximum horizontal stress in a subsurface formation includes using recordings of seismic energy detected proximate the subsurface formation to determine hypocenters of microseismic events. A focal mechanism for each microseismic event is determined. A measurement corresponding to vertical stress magnitude at a depth of the subsurface formation is used to normalize horizontal stress magnitudes for formation depth. The focal mechanism is used to determine a maximum horizontal stress direction. A measurement corresponding to a depth normalized minimum horizontal stress magnitude and the focal mechanism are used to determine a depth normalized maximum horizontal stress magnitude.
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