Variation of Reserves Production Ratio in Production Decline Stage

Abstract

Abstract: In process of oil field development, production decline is an important stage of it and occurs by the end. At present, the main method for prediction of the production change in decline stage is Arps' method, in which exponential decline approach is widely used. Based on hyperbolic decline curve of Arps and integrated with the rapid method for prediction of recoverable reserves and remaining recoverable reserves of oil field, this paper proposes a method for judging the variation of reserves production ratio in production decline stage of a field. It is shown that the reserves production ratio in exponential decline stage is a constant, not changing with the time of development, while that in hyperbolic decline stage is a rising straight line with the time. The case from two fields indicates that the method for judging the variation of reserves production ratio is correct in both exponential decline stage and hyperbolic decline stage.

Key words: exponential decline, hyperbolic decline, reserves production ratio, variation, change, regularity

CLC Number:

TE16
TE33

CHEN Yuan-qian, ZOU Cun-you. Variation of Reserves Production Ratio in Production Decline Stage[J]. Xinjiang Petroleum Geology, 2010, 31(1): 54-57.

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Variation of Reserves Production Ratio in Production Decline Stage

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