Construction method of dense sandstone multi-scale pore model and application
A dense sandstone, multi-scale technology, applied in the direction of suspension and porous material analysis, measuring devices, scientific instruments, etc., can solve the problems of scarcity of instruments, time-consuming, and restrictions on the universal use of Nano-CT systems, and achieve easy implementation and technical advanced effects
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[0095] This embodiment is used to illustrate the construction method of the tight sandstone multi-scale pore model of the present invention, and its flow is as follows figure 2 shown.
[0096] The brown-gray fine-grained lithic sandstone samples of the tight sandstone gas field are figure 1 way to split. One of them was used for the mercury injection test described below, and the other was used for the Micro-CT scan described below.
[0097] (1) Obtain Micro-CT images of rock samples and capillary pressure curves
[0098] a.Micro-CT scan
[0099] The MicroXCT-400 system of Xradia Company in the United States was used to scan the brown-gray fine-grained lithic sandstone samples of the tight sandstone gas field mentioned above. During this process, the sample stage will rotate 360 degrees and can take 1080 projection images. A three-dimensional structural image composed of 986 32-bit grayscale slice images (such as image 3 shown), the image resolution is 2.15 μm.
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