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Content archived on 2024-05-15

Causes, Processes, and Effects of Subsurface Sediment Mobilisation on Reservoir to Regional Scale

Objective

The aim of the conference is to document and discuss all aspects of subsurface sediment deformation within large shale sequences. Such deformation includes soft sediment deformation at shallow burial depth, mobilisation of over pressured shale in shale diapirs, injection of clastic dykes and sills, expulsion of material in mud volcanoes. This deformation may occur in response to sedimentary loading, overpressure increase or diagenetic alterations and is commonly influenced by the regional tectonic stress regime. Large-scale deformation often controls the structural style and fluid dynamics of the sedimentary basin whereas on a smaller scale reservoir properties are severely affected by rost-depositional sediment mobilisation and the sealing capacity of clay for hydrocarbon reservoirs or for long-time storage of hazardous waste may change risks to be misjudged.

Although the research areas in the above list seem very diverse they are in fact several aspects of one large topic: the deformation within shale sequences with varying internal and external pressure. Different aspects of this topic are relevant to different research communities and are studied using different techniques, leading to extreme specialisation. Mainly because of lack of comparable data there has been little exchange between the different disciplines, relevant information is dispersed and the topic is surpisingly poorly understood. Over the last years, the resolution of techniques to image and study the subsurface has improved tremendously, which generated much new detailed data of comparable resolution. Moreover, detailed studies of clay deformation and mobilisation (e.g. discontinuities in clays for waste storage) yielded a wealth of new data that cannot be interpreted according to the classical theorems. This conference is organised to discuss these new observations in a multi-disciplinary context and stimulate discussion about the causes and the processes of sediment deformation (mobilisation) in the subsurface to allow specialists to better evaluate its relevant effects.
ftp://ftp.cordis.lu/pub/improving/docs/HPCF-2001-00186-1.pdf(opens in new window)

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ACM - Preparatory, accompanying and support measures

Coordinator

Type of Event: Euro Conference
EU contribution
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Address
This event takes place in Gent

Belgium

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Total cost

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