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This study forms part of the IMRG's research programme on the Dogger geothermal reservoir in the Paris Basin and presents the most significant results of adopting this approach. The first chapter gives the results of the sedimentological study. The sedimentological characterisation of the reservoir and in particular of the productive levels, combined with cross-hole log correlations, has enabled a palaeogeographic model of the reservoir to be developed, which serves as the basis for hydrodynamic modelling of the reservoir. The second chapter gives an interpretation of the geochemical and isotopic data on the Dogger fluids, taking into account the variety of compositions encountered in the study area, through the analysis of water/rock interactions appropriate to this deep sedimentary setting. The third chapter, devoted to reservoir modelling, is based on processing and interpretation of geometric, hydraulic and thermal data obtained from 100 geothermal wells, and geostatistical analysis for estimation of the regional distribution of the main parameters of the reservoir. The last part gives a preliminary synthesis and a validation of the computer model. This is based upon the principal correlations between coupled variables and the interpretation of the observed anomalies. Lastly, various applications of the heterogeneous reservoir model are presented and compared with the approach using a conventional homogeneous equivalent porous medium.

Additional information

Authors: ROJAS J, BRGM, Orléans (FR);GIOT D, BRGM, Orléans (FR);LE NINDRE Y M ET AL, BRGM, Orléans (FR)
Bibliographic Reference: EUR 12639 FR (1990) 240 pp.
Availability: Bureau de Recherches Géologiques et Minières, Service Géologique National, Institut Mixte de Recherches Géothermiques, BP 6009, 45060 Orléans Cedex 2 (FR)
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