Reservoir oil deposit type identification method and device

Abstract

The embodiments of the present application disclose a reservoir oil deposit type identification method and device. The method includes the following steps that: the thickness of a reservoir to be identified, the gas survey total hydrocarbon values of sampling points of the reservoir to be identified as well as the gas survey base values, gas survey abnormal total hydrocarbon values and the thickness of gas survey abnormal sections of the reservoir to be identified are obtained according to the gas survey logging actual measurement data of the reservoir to be identified; the gas survey anomalyamplitude of the reservoir to be identified is calculated according to the thickness of the reservoir to be identified, the gas survey base values, gas survey abnormal total hydrocarbon values and thethickness of the gas survey abnormal sections; the gas survey form variation coefficient of the reservoir to be identified is calculated according to the gas survey total hydrocarbon values of the sampling points of the reservoir to be identified; and the oil deposit type of the reservoir to be identified is determined according to the gas survey anomaly amplitude and gas survey form variation coefficient of the reservoir to be identified on the basis of preset classification rules. With various embodiments of the present invention adopted, the accuracy and efficiency of the identification ofthe oil deposit type of the reservoir can be improved.

Description

technical field [0001] The present invention relates to the technical field of energy exploration, and in particular, to a method and device for identifying a reservoir type of a reservoir. Background technique [0002] With the improvement of the degree of exploration, the types of oil and gas reservoirs are becoming more and more complex and changeable. Different exploration methods and development technologies are generally used for different types of oil and gas reservoirs, and the process is complicated. How to quickly determine the type of oil and gas reservoirs has become an important technical problem in oil and gas exploration. [0003] Traditionally, the identification of reservoir types mainly uses gas measurement and geochemical interpretation charts. The existing gas measurement and geochemical interpretation charts have a single calculation method, and mainly use the values ​​of gas measurement components and geochemical pyrolysis components to calculate. For ...

AI Technical Summary

Problems solved by technology

This point-and-area evaluation method has a high recognition rate for oil and water layers with a single fluid, but it is less effective for some complex oil and gas layers (such as low permeability oil and gas layers)

For example, for reservoirs with heterogeneous fluid properties (such as oil and gas layers, oil-water layers, oil-bearing water layers, etc.), the gas measurement in the vertical direction is complex and changeable. The evaluation process is complicated, and human factors are greatly affected, which affects the efficiency and accuracy of reservoir type identification

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