Description
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This contribution presents a thorough study of the SE-German molasse
basin, its subsidence history and the sequence stratigraphy in the
sediments of that basin. The study is based on seismic and borehole
data generously provided by German petroleum companies. A detailed
outcrop study of marine Molasse deposits was carried out to they are
thought to be analogues of sandy tidal sediments. Using probabilistic
modelling and simulations it was found that the reservoir
characteristics, due to the simple layercake structure of the Molasse
sediment can be predicted from the data of one single well.
The results of the sequence stratigraphic study and those of the
subsidence analysis are described and used as input parameters for a
stratigraphic model of the Molasse basin.
Abstract IV
Acknowledgements IV
1. Introduction 1
1.1 Aims of the study 1
1.2 General Overview on the Molasse basin 1
1.2.1 Pre-Tertiary development 2
1.2.2 Tertiary development 3
1.3 Previous research 3
1.4 Database and methods 5
2. Sequence stratigraphy 7
2.1 Introduction 7
2.2 Stratigraphy 7
2.3 Seismic stratigraphy 9
2.3.1 Shelf area 9
2.3.1.2 Well analysis 9
2.3.1.2 Seismic facies 18
2.3.1.3 Seismic sequences 20
2.3.2 Puchkirchen Trough 28
2.3.2.1 Well analysis 28
2.3.2.2 Seismic facies 30
2.3.2.3 Seismic sequences 32
2.3.3 Subsurface mapping 35
2.4 Discussion 42
2.5 Summary 47
3. Subsidence analysis 49
3.1 Introduction 49
3.1.1 Method 49
3.1.2 Previous studies 51
3.2 Results and interpretations 55
3.2.1 Geohistory analysis 55
3.2.2 Backstripping 58
3.2.3 Sedimentation rates 72
3.3 Discussion and conclusions 73
3.4 Summary 74
4. Stratigraphic modelling 77
4.1 Introduction 77
4.2 PHIL 77
4.2.1 Method 77
4.2.2 Simulations 77
4.2.3 Discussion 88
4.3 FUZZIM 93
4.3.1 Method 93
4.3.2 Simulations 95
4.3.3 Discussion 97
4.4 Summary and conclusions 100
5. Discussion 107
6. Reservoir modelling 109
6.1 Introduction 109
6.1.1 Principles of reservoir modelling 109
6.1.2 Principles of the program used 109
6.1.3 Geographical and geological setting 110
6.2 Outcrop study 111
6.2.1 Whole outcrop 111
6.2.1.1 Geological interpretation 112
6.2.1.2 Modelling 120
6.2.1.3 Conclusions 125
6.2.2 Detailed study 125
6.2.2.1 Lithofacies classification 127
6.2.2.2 Geostatistical analysis 127
6.2.2.3 Conclusions 129
6.3 Summary 132
7. Appendix 133
8. References 137
