Patent ID: 11965734
Assignee: NORTHEAST PETROLEUM UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 0:
1. A method for quantitatively evaluating surface roughness of an organic pore of kerogen in shale, comprising:
making a shale sample;
applying a circle of silver-painted conductive tape on the edge of the shale sample to obtain a processed sample;
conducting image scanning on the processed sample to obtain a scanned image;
determining a kerogen area according to the scanned image;
determining an organic pore area according to the kerogen area;
carrying out gridding treatment on the organic pore area to obtain multiple grid cells;
adopting double integral calculation on each of the grid cells to obtain the areas of the multiple grid cells;
summing each of the areas to obtain the surface area of the organic pore; and
evaluating surface roughness of the organic pore according to the surface area of the pore;
wherein the evaluating surface roughness of the organic pore according to the surface area of the pore comprises:
calculating a surface roughness coefficient of the pore using the following formulas

Froughness=Sroughness/Ssph=(ΣΔSi)/(2πRH)

(R−H)2+r2=R2 

wherein, Froughness refers to the surface roughness coefficient of the pore, Sroughness is the surface area of the pore, Ssph is a surface area of a spherical crown to be synthesized by the pore, R is a radius of the spherical crown, r is a pore radius, H is a pore height, and ΔSi is an area of an i-th triangle after the gridding treatment.