2020
DOI: 10.5194/egusphere-egu2020-22014
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Upscaled modelling of natural fracturing and leakage due to high overpressures

Abstract: <p>In sedimentary basins highly overpressured formations and zones are observed worldwide. The high overpressures have been generated over millions of years due to sedimentation amount and rate, compaction, lateral fluid flow, diagenesis and other processes. The lateral fluid flow is often controlled by the fault pattern and sealing properties of the faults in the area, thus defining what is often termed pressure compartments. When high overpressures builds-up over time in such compartment, event… Show more

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“…The simulator is customized to model pore‐water pressure generation and dissipation in 3D over geological time scales. The simulator has been rewritten in the last years (Grøver et al, 2018, Lothe et al, 2020, 2022), but the simulator is still built on the same basin modelling principles as presented in Borge (2000) and Lothe (2004). The basic assumption is that the fluid flow dynamics can be described by pressure compartments, that is defined by interpreted faults at a given depth, usually at top reservoir level.…”
Section: Methodsmentioning
confidence: 99%
“…The simulator is customized to model pore‐water pressure generation and dissipation in 3D over geological time scales. The simulator has been rewritten in the last years (Grøver et al, 2018, Lothe et al, 2020, 2022), but the simulator is still built on the same basin modelling principles as presented in Borge (2000) and Lothe (2004). The basic assumption is that the fluid flow dynamics can be described by pressure compartments, that is defined by interpreted faults at a given depth, usually at top reservoir level.…”
Section: Methodsmentioning
confidence: 99%
“…Based on seismic data from the region along with geological simulations of pressure build‐up and release (Borge, 2000; Lothe, 2004; Paglia et al, 2019) we fit an initial multivariate Gaussian model for the pore pressure at the well location and at neighboring wells. The pore pressure measurements yD in neighboring wells will then be indicative of the pore pressure in the target well via correlations.…”
Section: Examplesmentioning
confidence: 99%