Method for evaluating reservoir pore type based on pore replacement
A reservoir and pore technology, applied in the field of oil and gas resource exploration, can solve problems such as inability to promote reservoirs, inconsistent reservoir pore types, and difficulty in reflecting the characteristics of reservoir pore types
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[0066] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0067] The main core of the present invention has three aspects: the one, according to parameters such as the longitudinal wave velocity of known reservoir, shear wave velocity, density, porosity, saturation and mineral component volume content (being shale content), utilize Gassmann equation and the present invention's The pore shape critical porosity model establishes the relationship between various parameters, and the pore aspect ratio parameter that characterizes the reservoir pore type is inverted from the reservoir velocity; the second is to use the newly invented pore shape critical porosity model to change the reservoir pore aspect ratio parameters, replace the original po...
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