This collection of new research describes aspects, observations, and implications of natural hydrocarbon manifestations colloquially referred to as seeps. There is tremendous variation in seeps — their fluids, gases, setting, and associations — and they are not easy to characterize. Yet they are true oracles of nature and speak directly to the prospector. With the increased resolution power of many geophysical methods, we are seeing direct evidence of seeps on a wide variety of data, including conventional seismic data. This volume is designed and organized to help answer key questions workers may develop from working field data: (1) What do seeps look like in various perspectives, data types, and environments? (2) What kind of methodologies may be used to detect and measure seeps? (3) What does the seep tell me about the prospect or area hydrocarbon system and associated risks? Accordingly, the chapters of this book are divided into three sections that discuss the descriptions and observations of seeps, the science of seepage and methodology, and the implications of seeps.
Figures & Tables
Hydrocarbon Seepage: From Source to Surface
With the increased resolution power of many geophysical methods, we are seeing direct evidence of seeps on a wide variety of data, including conventional seismic. New methods and technology have also evolved to better measure and detect seeps and their artifacts and reservoir charge and to map migration and remigration routes. In addition, detection of seepage is important for minimizing the risks associated with shallow gas drilling hazards, ensuring platform stability, and preventing well blow-outs.