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Abstract

Almost every aspect of development geological activity has been brought into the computer age. Part 8 of the Manual is not an attempt to describe and catalog the myriad of computer products and equipment available for everyday use, but rather to introduce more immediate generalized areas of analysis in development geology. The chapters here do not describe computer-aided drafting techniques, such as the preparation of base maps, GIS systems, relational databases, or other computer-assisted drafting topics. Rather, they focus on the geological nature of reservoir descriptions. All of the other parts of the Manual have their computer adaptations and implementations so this part focuses on integrated areas of development work. In particular, three significant topics are covered: computer-assisted surface analysis (contouring), digital well log analysis, and workstation interpretation pitfalls and techniques.

The first topic examines the fundamentals of computer contouring. The production of a map is the first and foremost result of any reservoir evaluation. Without a map, the relationships among each and every well and their productive capacities will not be understood. The first chapter by Joel Gevirtz describes the underlying algorithms commonly used in computer-assisted contouring. It is critical in producing computer-assisted maps that a development scientist understand the assumptions and results of the program. As Joel clearly describes, different parameters lead to significantly different maps of the same data. The second chapter by David Hamilton describes the fine-tuning and improvement of computer-generated surfaces. One of the major advantages of using a computer to describe surfaces is

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