Quantification of stress and strain using calcite twins and anisotropy of physical rock properties in a folded/fractured reservoir

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dc.contributor.authorAmrouch, K.
dc.contributor.authorLacombe, O.
dc.contributor.authorDaniel, J.M.
dc.contributor.authorRobion, P.
dc.contributor.authorCallot, J.P.
dc.contributor.authorBellahsen, N.
dc.contributor.conference1st International Petroleum Conference and Exhibition (4 May 2009 - 9 May 2009 : Shiraz, Iran)
dc.date.issued2009
dc.descriptionExtended abstract of paper presented at Structural Geology and Salt Tectonics III session.
dc.description.abstractThe description of folded/fractured reservoirs requires the understanding of mechanical behaviour of rocks during deformation. In folds, at the decametric scale, deformation is accommodated by flexural slip, faulting and formation of macroscopic fracture sets. The role of LPS has been recognized for years using magnetic fabric analysis which shows that in siliciclastic deposits the deformation is mainly accommodated by pretilting strain. This paper thus combines analyses of calcite twins, Anisotropy of Magnetic Susceptibility and Anisotropy of P-wave Velocity, together with petrological study to investigate the relationship between fold development and stress/strain. The results are compared to already available and newly collected mesoscale fracture and fault slip data. The Sheep Mountain anticline was chosen as a natural laboratory.Our results show a good agreement between calcite twinning and anisotropy of rocks properties, and with macroscopic fracturing on the other hand. Our study points toward a better description of deformation mechanisms of folded strata. A major result is the consistency of the record of deformation at microscopic and macroscopic scales, emphasizing that core scale data can be relevant to fold-scale structuring. This study yields important constraints for forthcoming modeling of stress distribution during fold development.
dc.description.statementofresponsibilityK. Amrouch, O. Lacombe, J.M. Daniel, P. Robion, J.P. Callot and N. Bellahsen
dc.identifier.citationProceedings, 2009
dc.identifier.doi10.3997/2214-4609.20145867
dc.identifier.isbn9789073781658
dc.identifier.issn2214-4609
dc.identifier.orcidAmrouch, K. [0000-0001-7180-3386]
dc.identifier.urihttp://hdl.handle.net/2440/87439
dc.language.isoen
dc.publisherEuropean Association of Geoscientists and Engineers, EAGE
dc.source.urihttp://dx.doi.org/10.3997/2214-4609.20145867
dc.titleQuantification of stress and strain using calcite twins and anisotropy of physical rock properties in a folded/fractured reservoir
dc.typeConference item
pubs.publication-statusPublished

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