Fluid identification method and device

Abstract

The invention discloses a fluid identification method and device. Wherein, the method includes: determining the classification critical value of the acid mineral content for classifying the conglomerate reservoir; according to the classification critical value and the acid mineral content in the conglomerate reservoir, classifying the conglomerate reservoir to obtain the conglomerate Reservoir classification results; establish a crossplot of acidic mineral content and resistivity corresponding to the classification results of conglomerate reservoirs; identify the type of fluid in the conglomerate reservoir according to the crossplot of acidic mineral content and resistivity. The invention solves the technical problem in the related art that fluids containing acidic mineral conglomerate cannot be accurately distinguished.

Description

technical field

[0001] The invention relates to the technical field of petroleum exploration, in particular to a fluid identification method and device. Background technique

[0002] In related technologies, for the exploration and development of oil and gas reservoirs, the identification of reservoir fluid properties is an important task of logging evaluation. Common fluid property identification methods are summarized as follows: resistivity method, crossplot method, P 1 / 2 method, nuclear magnetic resonance logging discrimination method, etc. For conglomerate reservoirs containing acidic minerals, affected by the eruptive diagenetic mechanism of acidic volcanic rocks, the reservoir space is generally dominated by primary pores and secondary pores, with a large pore-throat ratio and complex pore structure, showing extremely strong At the same time, the analysis and research on the relationship between the content of acidic mineral components and resistivity found that whe...

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