Rock reservoir space measuring method and device
A measurement method and rock technology, applied in the field of geological exploration, can solve the problems of pore structure characterization, large sample particle size difference, inability to take into account sample representativeness and resolution, etc., and achieve the effect of improved accuracy and precise pore structure characteristics
Pending Publication Date: 2021-05-28
PETROCHINA CO LTD
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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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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.
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