Abstract: This chapter elaborates the gas from conventional oil fields. Oil and gas accumulations occur in underground traps formed by structural, stratigraphic, or a combination of structural and stratigraphic features. These hydrocarbons are contained in intergranular openings, joints, fractures, and solution cavities in sands, sandstones, limestones, and dolomites. That part of a trap in which oil or gas is contained in a hydraulically connected system is called a reservoir. Another portion of the trap, called an aquifer, may contain water that is hydraulically connected to the reservoir. Oil and gas move in the reservoir and to wells by fluid expansion, capillarity, natural or artificial fluid displacement, and gravitational segregation. In many reservoirs, all of these mechanisms may be operating simultaneously. However, during any given period of the life of the reservoir, one or more of these mechanisms may predominate naturally or because of artificial control. These mechanisms may be operative in all types of petroleum reservoirs identified previously. The objective of petroleum reservoir engineering is to utilize these mechanisms to achieve maximum economic recovery.
Publication Year: 1977
Publication Date: 1977-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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