Low-permeability sandstone reservoir pore structure quantitative inversion method based on nuclear magnetic resonance
A pore structure, nuclear magnetic resonance technology, applied in permeability/surface area analysis, measurement device, suspension and porous material analysis, etc., can solve the problem of not taking into account the maximum mercury saturation problem
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[0114] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.
[0115] A nuclear magnetic resonance-based quantitative inversion method for the pore structure of low-permeability sandstone reservoirs, comprising the following steps:
[0116] The first step is to select the basic sample, the basis for the selection of the basic sample:
[0117] a. The sample needs to use the data of the supporting nuclear magnetic experiment and mercury intrusion experiment,
[0118] b. The samples must be conventional logging information,
[0119] c. Samples include different pore structure types;
[0120] The second step is to classify the pore structure types of low-permeability sandstone reservoirs based on the mercury injection data:
[0121] Due to the complex pore structure of low-permeability sandstone, the characteristics...
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