Modeling of compaction and overpressuring in sedimentary basins

Gutierrez, Marte; Wangen, Magnus

doi:10.1016/j.marpetgeo.2005.01.003

Cited by 45 publications

(37 citation statements)

References 30 publications

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“…Modelling by Gutierrez and Wangen (2005) has shown that such large amounts of overpressure at depths of 4000-4800 m are not consistent with undercompaction as the sole overpressure-generating mechanism, and imply that a significant amount of unloading has taken place.…”

Section: Article In Pressmentioning

confidence: 99%

Dependence of sonic velocity on effective stress in North Sea Mesozoic mudstones

Lubanzadio

Goulty

Swarbrick

2006

Marine and Petroleum Geology

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Section: Article In Pressmentioning

confidence: 99%

Dependence of sonic velocity on effective stress in North Sea Mesozoic mudstones

Lubanzadio

Goulty

Swarbrick

2006

Marine and Petroleum Geology

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“…The first decompaction models were proposed by Athy (1930), before being enhanced by several authors (Weller, 1959;Magara, 1976;Sclater and Christie, 1980;Schmoker and Halley, 1982;Lerche, 1990a;Gutierrez and Wangen, 2005). These approaches assume that normally pressured sediments exhibit an exponential relationship between depth and porosity of the form:…”

Section: The Main Approachesmentioning

confidence: 99%

“…Subsidence analysis based on decompaction curves is a standard method in sedimentary basin investigation (Sclater and Christie, 1980;Maillard et al, 2003;Gutierrez and Wangen, 2005;Hölzel et al, 2008). Sediment compaction affects petrophysical properties in a sedimentary basin, such as pressure, porosity and permeability.…”

Section: Introductionmentioning

confidence: 99%

“…It is therefore of importance to account for compaction in basin analysis. Several models of decompaction have been developed, based on two main approaches: the "classical" method, which considers compaction as a function of depth and rock types (Weller, 1959;Magara, 1976;McKenzie, 1978;Sclater and Christie, 1980;Schmoker and Halley, 1982;Lerche, 1990a;Gutierrez and Wangen, 2005), and the elasto-plastic approach, requiring more geological and physical parameters to constrain progressive decompaction (Schneider et al, 1996). In 3D, decompaction should also relate to tectonic deformation, especially in structurally complex areas.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the evolution of syn-depositional folds: Coupling decompaction and 3D sequential restoration

Durand-Riard

Salles

Ford

et al. 2011

Marine and Petroleum Geology

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“…These episodes trigger physical and chemical processes which have a great influence on sediment properties and the resulting transient pore pressure field (Osborne and Swarbrick, 1997;Wangen, 2001;Swarbrick et al, 2002). The physical processes are termed as mechanical compaction which accounts for porosity loss caused by the change in effective stresses, sediment strength and compressibility (Gutierrez and Wangen, 2005). On the other hand, chemical compaction encompasses all the chemical processes occurring in sediments during digenesis including mineral dissolution and precipitation.…”

Section: Introductionmentioning

confidence: 99%

Assessing the implications of tectonic compaction on pore pressure using a coupled geomechanical approach

Obradors-Prats

Rouainia

Aplin

et al. 2017

Marine and Petroleum Geology

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractOverpressure prediction in tectonic environments is a challenging topic. The available pore pressure prediction methods are designed to work in environments where compaction is mostly one dimensional and driven by the vertical effective stress applied by the overburden. Furthermore, the impact of tectonic deformation on stresses, porosity and overpressure is still poorly understood. We use a novel methodology to capture the true compaction phenomena occurring in an evolving 3D stress regime by integrating a fully-coupled geomechanical approach with a critical state constitutive model. To this end, numerical models consisting of 2D plane strain clay columns are developed to account for compaction and overpressure generation during sedimentation and tectonic activity. We demonstrate that a high deviatoric stress is generated in compressional tectonic basins, resulting in a substantial decrease in porosity with continuing overpressure increase.The overpressure predictions from our numerical models are then compared to those estimated by the equivalent depth method (EDM) in order to quantify the error induced when using classical approaches, based on vertical effective stress, in tectonic environments. The stress paths presented here reveal that a deviation from the uniaxial burial trend can substantially reduce the accuracy of the EDM overpressure predictions.

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Modeling of compaction and overpressuring in sedimentary basins

Cited by 45 publications

References 30 publications

Dependence of sonic velocity on effective stress in North Sea Mesozoic mudstones

Dependence of sonic velocity on effective stress in North Sea Mesozoic mudstones

Understanding the evolution of syn-depositional folds: Coupling decompaction and 3D sequential restoration

Assessing the implications of tectonic compaction on pore pressure using a coupled geomechanical approach

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