Laumonite cemented glutenite reservoir logging identification method and device

Abstract

The invention provides a laumontite cemented glutenite reservoir logging identification method and device. The method comprises the following steps that density logging data, neutron logging data, interval transit time logging data, deep resistivity logging data and shallow resistivity logging data of a target reservoir are acquired; normalization processing is performed on the obtained density logging data, neutron logging data and interval transit time logging data of the target reservoir to obtain normalized density logging data, normalized neutron logging data and normalized interval transit time logging data of the target reservoir; based on the obtained deep resistivity logging data and shallow resistivity logging data of the target reservoir, the ratio of the deep resistivity to the shallow resistivity of the target reservoir is determined; and based on the normalized density logging data, the normalized neutron logging data, the normalized interval transit time logging data and the ratio of the deep resistivity to the shallow resistivity of the target reservoir, whether the target reservoir is a laumonite cemented glutenite reservoir or a laumonite-free cemented glutenite reservoir is judged.

Description

technical field [0001] The invention belongs to the field of reservoir evaluation, and in particular relates to a logging identification method and device for a zeolite cemented glutenite reservoir. Background technique [0002] Due to the small porosity and complex pore structure of glutenite reservoirs, the contribution of pore fluid to logging results is small, while the contribution of rock skeleton is relatively large. As a result, the difference in logging response between effective reservoirs and non-reservoirs is small. Using conventional logging interpretation methods to evaluate reservoirs, the results obtained are inconsistent with the real situation of the formation. [0003] In the Permian tight glutenite strata in the Junggar Basin, a large number of laurelite-cemented glutenite reservoirs are locally developed. Due to the low skeletal density and poor electrical conductivity of zeolite, the measured bulk densities of zeolite-cemented sandy conglomerate reserv...

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Problems solved by technology

However, this method only considers the difference in physical properties between the zeolite-cemented glutenite reservoir and the cemented glutenite reservoir without zeolite, and does not comprehensively consider the difference in electrical properties between the two and the relationship between physical and electrical properties. It is only a regional statistical result, which leads to limitations in the use of the above identification methods and cannot be promoted and applied on a large scale

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