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Commercial oil deposits in basement rocks are not geological 'accidents' but are oil accumulations which obey all the rules of oil sourcing, migration and entrapment; therefore in areas of not too deep basement, oil deposits within basement rocks should be explored with the same professional skill and zeal as accumulations in the overlying sediments, Landes et al. (1960), AAPG Bulletin Given that most OPEC countries are currently at or within 5% of production capacity, there is a growing need to look for 'new oil' and other hydrocarbons in non-traditional sources. While oil and gas fields in crystalline basement are still discovered mostly by accident, as shown in this book, such reservoirs can be very prolific, especially if the basement rock is highly faulted or fractured. The chapters in this volume cover a diverse range of topics related broadly to the theme of hydrocarbons in crystalline rocks, and challenge explorationists' definition of basement rock, which needs to be less narrow and more responsive to new geological ideas. Also available: Fracture And In-situ Stress Characterisation of Hydrocarbon Reservoirs (Geological Society Special Publication) - ISBN 1862391300 The Future of Geological Modelling in Hydrocarbon Development - Special Publication no 309 - ISBN 1862392668 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society in the world, and one of the largest publishers in the Earth sciences.The Society publishes a wide range of high-quality peer-reviewed titles for academics and professionals working in the geosciences, and enjoys an enviable international reputation for the quality of its work.The many areas in which we publish in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic studies and geochemistry-Remote sensing-History of geology-Regional geology guides
E-Book Content
Hydrocarbons in Crystalline Rocks
Geological Society Special Publications Society Book Editors R. J. PANKHURST (CHIEF EDITOR) P. DOYLE F. J. GREGORY J. S. GRIFFITHS A. J. HARTLEY R. E. HOLDSWORTH
A. C. MORTON N. S. ROBINS M. S. STOKER J. P. TURNER
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It is recommended that reference to all or part of this book should be made in one of the following ways: PETFORD, N. & MCCAFFREY, K. J. W. (