浅议油气化探的干扰因素

doi:10.11743/ogg20060513

Abstract

Abstract:

Using the understanding of interference in geophysical exploration for reference,the concept of interference in oil & gas geochemical exploration is proposed and also expounded with the theory of vertical micromigration of hydrocarbon and the working principle of geochemical exploration.There are four basic types of interference sources in oil and gas geochemical exploration: syngenetic process,biochemical gas effect,sample quality difference,and pollution from human activities.The first three types are the main interfering factors; while the last one maybe limited to some individual sampling spots.An analysis is carried out to evaluate the degree of interference based on the study of field exploration cases and results of simulation test.Corresponding measures are proposed to suppress interference in different stages of geochemical exploration,including selection of proper method combination,standardization of the media difference,and accurate anomaly separation and identification.The relationship between anomaly and background shows that the interference is universal in terms of background can occur in any survey areas,while the real interference in terms of anomaly just exists in limited survey areas,and can be suppressed to some extent with proper methods.

Key words: interfering factor, interference source, interference suppress, oil and gas geochemical exploration

CLC Number:

TE122.3

Deng Guorong. Interfering factors in oil and gas geochemical exploration[J]. Oil & Gas Geology, 2006, 27(5): 675-681.

References

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Interfering factors in oil and gas geochemical exploration

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