Environmental Data Energy Technology Characterizations are publications which are intended to provide policy analysts and technical analysts with basic environmental data associated with key energy technologies. The first publication, Summary, provides information in tabular form on the eight technology areas examined; subsequent publications provide more detailed information on the technologies. This publication provides documentation of petroleum. The transformation of the energy in petroleum into a more useful form is described in this document in terms of major activity areas in the petroleum cycle, that is, in terms of activities which produce either an energy product or a fuel leading to the production of an energy product in a different form. These activities represent both well-documented and less well-documented activity areas. The former activities are characterized in terms of actual operating data with allowance for future modification where appropriate. Emissions are assumed to conform to environmental standards. The less well-documented activity areas examined are those like oil storage in salt domes and exploration for which engineering studies were performed. The organization of the chapters in this volume is designed to support the tabular presentation in the Summary. Each chapter begins with a brief description of the activity under consideration. The standard characteristics, size, availability, mode of functioning, and place in the fuel cycle are presented. Next, major legislative and/or technological factors influencing the commercial operation of the activity are offered. Discussions of resources consumed, residuals produced, and economics follow. To aid in comparing and linking the different activity areas, data for each area are normalized to 10/sup 12/ Btu of energy output from the activity.