Depositional Modeling of Detrital Rocks: With Emphasis on Cored Sequences of Petroleum Reservoirs

Studies of cores from both field and wildcat wells offer the opportunity to interpret subsurface rock sequences and relate them to surface sections, to calibrate mechanical logs with observed lithologies, and to use these data to enhance both field development drilling and wildcat exploration. The cored sequences of detrital rocks described in this core workshop are organized on the basis of depositional models, and presented sequentially down the depositional system through the continental environments to the shoreline zone, and, finally, to the shallow offshore and deeper water environments. Each of the depositional models is treated in separate sections in which diagrams, facies descriptions and terminology are presented that summarize the principal aspects of the model.
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Published:January 01, 1985
Abstract
The origin and distribution of reservoir rocks are controlled primarily by depositional processes. Scientists concerned with the origin of sedimentary rocks are fortunate because they can observe the conditions and processes by which sediments accumulate today and use their observations to interpret the origin of ancient rocks. By using the areas of modern environments of deposition as natural laboratories, scientists seek to improve the quality of their work. A massive effort has been underway for the past 30 years by industry, government and university scientists throughout the world to investigate modern environments of deposition and to interpret the results of processes in Holocene sequences. Concepts have evolved from these studies that have revolutionized scientific thought about sedimentary rocks.