Rock reservoir space measuring method and device

Abstract

The embodiment of the invention provides a rock reservoir space measuring method and device, and the method comprises the steps: carrying out preliminary penetration scanning of a target rock, and determining attribute characteristics and distribution characteristics of a filler in the target rock according to a preliminary penetration scanning result; determining at least one fine penetration scanning area and the area volume ratio of the fine penetration scanning area in the target rock according to the attribute characteristics and the distribution characteristics of the filler; performing fine penetration scanning on the fine penetration scanning area, and obtaining area pore feature information corresponding to the fine penetration scanning area according to a fine penetration scanning result; according to the area volume ratio and the area pore characteristic information, determining the overall pore characteristic information of the target rock; according to the method, the accurate pore structure characteristics of the target rock can be obtained, so that the accuracy of target rock reservoir space measurement is improved.

Description

technical field [0001] The application relates to the field of geological exploration, in particular to a method and device for measuring rock storage space. Background technique [0002] As an important type of oil and gas reservoirs, coarse-grained clastic rock represented by conglomerate has become an important research object for geologists, especially recently, with the large conglomerate oil province in the Mahu area of ​​the Junggar Basin and the Dongying Basin of the Bohai Bay Basin. The discovery of large-scale conglomerate reserves on the north slope of the sag and the coarse-grained sedimentary system with conglomerate as the core have become important research areas. [0003] Pore ​​structure analysis is the basis of reservoir evaluation, focusing on the evaluation of pore size, distribution and connectivity. With the recent rapid development of CT technology in the petroleum industry, three-dimensional pore structure analysis has become the object pursued by res...

AI Technical Summary

Problems solved by technology

In the 3D imaging study of reservoir space by CT, considering the large difference in particle size of coarse-grained clastic rock reservoir samples, the representativeness and resolution of samples cannot be considered in the process of X-ray CT scanning, that is, there is a contradictory relationship between sample size and resolution , the sample size is divided by the

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