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Figure 1 -Conceptual model for basin-center anomalously pressured gas accumulations. Key elements are (1) the regional pressure seal expressed as a sonic or seismic velocity inversion (e.g., regional boundary that separates normally pressured rocks above from anomalously pressured rocks below), and (2) production sweetspots below the regional pressure seal (e.g., domains characterized by enhanced porosity and permeability). Blue is fluid that is dominantly water (simple phase); yellow is fluid containing a significant free gas phase (multiphase) and red are capillary seals.
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Figure 1 -Conceptual model for basin-center anomalously pressured gas accumulations. Key elements are (1) the regional pressure seal expressed as a sonic or seismic velocity inversion (e.g., regional boundary that separates normally pressured rocks above from anomalously pressured rocks below), and (2) production sweetspots below the regional pressure seal (e.g., domains characterized by enhanced porosity and permeability). Blue is fluid that is dominantly water (simple phase); yellow is fluid containing a significant free gas phase (multiphase) and red are capillary seals.