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Abstract

Volumetric changes in reservoirs due to fluid extraction and injection can induce either subsidence or uplift which could trigger fault reactivation and threaten well integrity. Surface deformation monitoring can provide valuable constraints on the dynamic behaviour of a reservoir through time. Whatever the surveying technique, the detection of millimetre level surface deformation is required to monitor small surface displacement rates. Mapping surface effects accurately requires hundreds of measurement points per square km which cannot be delivered by traditional monitoring methods without unacceptably large expenditure. SqueeSARTM is one of the most promising valuable and cost-effective techniques capable of providing high precision and high areal density displacement measurements over long periods of time, free of atmospheric artifacts. This accurate information can be used to calibrate geomechanical three-dimensional numerical models. Providing the deformation and stress fields, the models can be effectively used in their forecasting potential to investigate the expected evolution of the ground surface movements, the possibility of fault re-activation and/or fracture generation, the risk well breaking depending on various development plans. Selected case studies will be presented. One of the most recent applications is relevant to the Tengiz giant oil field, Kazakhstan.

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/content/papers/10.3997/2214-4609.20142941
2012-10-29
2021-10-26
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20142941
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