--> Abstract: Joined up Data: Using GIS to Enhance the Multi-Scale Analysis and Interpretation of Overpressure Distribution, by Phillip Clegg, Stephen A. O'Connor, Richard E. Swarbrick, and David T. Scott; #90078 (2008)

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Joined up Data: Using GIS to Enhance the Multi-Scale Analysis and Interpretation of Overpressure Distribution

Phillip Clegg, Stephen A. O'Connor, Richard E. Swarbrick, and David T. Scott
Geopressure Technology Ltd, Durham, United Kingdom

Creating realistic and viable geological models is a time consuming and complex process, involving the collection and analysis of a wide and often disparate variety of data types. This can create a number of data storage, visualization and analysis problems which can not only prolong the model building process but can significantly limit the scope and depth of the analysis that can be achieved. However, by employing a methodology which has at its core a Geographic Information Systems (GIS) these difficulties can be significantly reduced.

Analysing overpressure on a basin-wide scale is such a case in point, as the magnitude and distribution of overpressure relies on a wide variety of factors such as basin depth and architecture, temperature gradient, facies distribution, chemical alteration, pore fluid density, fault orientation and spacing and tectonic history.

Using data from two regional pressure studies in the North Sea we describe a workflow and methodology that integrates a variety of data including; direct pressure measurements, wireline logs, salinity, temperature, faults, and horizon maps within a GIS. This provides a geospatially linked data framework from which a broad spectrum of spatial and temporal analyses can be applied allowing 2D, 3D and 4D (i.e. temporal) interpretations to be made. In addition data can be analysed and interpreted at a variety of scales and interpretations can be updated easily and quickly as new data become available.

By adopting a GIS methodology it is believed that project management can be improved and analysis and interpretation enhanced.

 

AAPG Search and Discover Article #90078©2008 AAPG Annual Convention, San Antonio, Texas