It is a pleasure to be asked to write the foreword to this interesting new book. When Professor Bedrikovetsky first accepted my invitation to spend an extended sabbatical period in the Department of Mineral Resources Engineering at Imperial College of Science, Technology and Medicine, I hoped it would be a period of fruitful collaboration. This book, a short course and a variety of technical papers are tangible evidence of a successful stay in the UK. I am also pleased that Professor Bedrikovetsky acted on my suggestion to publish this book with Kluwer as part of the petroleum publications for which I am Series Editor. The book derives much of its origin from the unpublished Doctor of Science thesis which Professor Bedrikovetsky prepared in Russian while at the Gubkin Institute. The original DSc contained a number of discrete publications unified by an analytical mathematics approach to fluid flow in petroleum reservoirs. During his sabbatical stay at Imperial College, Professor Bedrikovetsky has refined and extended many of the chapters and has discussed each one with internationally recognised experts in the field. He received great encouragement and editorial advice from Dr Gren Rowan, who pioneered analytical methods in reservoir modelling at BP for many years.

Zusammenfassung
When Professor Bedrikovetsky first accepted my invitation to spend an extended sabbatical period in the Department of Mineral Resources Engineering at Imperial College of Science, Technology and Medicine, I hoped it would be a period of fruitful collaboration.

Inhalt

1. One-Dimensional Motion of a Two-Phase System of Immiscible Liquids in a Porous Medium.- 2. Percolation Models of Flow through a Porous Medium.- 3. Analytical Models of Water-Flooding of Stratified Reservoirs.- 4. Effects of Compressibility on Two-Phase Displacement.- 5. One-Dimensional Displacement of Oil by Chemical Solutions.- 6. The Effect of Non-Equilibrium Sorption and Solution on the Displacement of by Chemical Flooding.- 7. Displacement of Oil by a Chemical Slug with Water Drive.- 8. Oil Displacement by a Combination of Multi-Chemical Slugs.- 9. Motion of a Thin Slug of Chemical in Two-Phase Flow in a Porous Medium.- 10. The Inverse Problem of Determining the Degree of Sorption of a Chemical from Laboratory Data.- 11. An Analytical Model of Two-Dimensional Displacement of Oil from Reservoirs in a System of Wells.- 12. Chemical Flooding in Stratified Reservoirs.- 13. Methodology of the Application of 3D Analytical Models to Feasibility Studies and Design of Chemical Flooding Schemes.- 14. Displacement of Non-Newtonian Oil by Hot Water with Heat Losses to Adjacent Layers.- 15. Hot Water Flooding of Waxy Crude with Paraffin Separation.- 16. The Displacement of Retrograde Condensate and Oil by Gases and Solvents.- 17. The Displacement of Retrograde Condensate by Slugs of Rich Gas.- 18. Analytical Water-Alternate Gas Modelling.- 19. The Two-Phase Displacement of Binary Mixtures at Large Pressure Gradients.- 20. The Effect of Capillary Forces on Phase Equilibria and Displacement in Porous Media.- 21. Inverse Problems of Laboratory Multi-Phase Displacement with Phase Transitions.- 22. Feasibility Study and Planning of Enhanced Condensate Recovery: Application of Analytical Models to Vuktyl Oil-Gas-Condensate Field.- 23. The Theory of in Situ Sweetening of Natural Gases.- 24. Stratification of Multi-Component Mixtures in the Earth's Thermal and Gravitational Fields.- 25. Capillary-Gravitational Stratification of Two-Phase Mixtures in Thick Reservoirs.- 26. Analysis of Convective Instabilities in Binary Mixtures in Porous Media.- 27. The Dynamic Gravitational Separation of Oil and Water in Reservoirs of Limited Thickness.- 28. Vertical Displacement of Gravity-Stratified Two-Phase Three-Component Fluids.- 29. Analytical Model of Gravity-Stabilized Gas Injection in a Thick Heterogeneous Reservoir.- Appendix A: Admissibility of discontinuities in two-phase flow in a porous medium with chemical flooding.- Appendix B: Stability of discontinuities in two-phase flow in a porous medium with chemical flooding.- Appendix C: Classification of decay configurations of an arbitrary discontinuity for two-phase flow in a porous medium with chemical flooding.- References.- Nomenclature.