Analysis of reservoir pore complexes

Details Analysis of reservoir pore complexes Analysis of reservoir pore complexes

G - Physics

01

N

358/10

G01N 33/24 (2006.01) B61D 11/00 (2006.01) B61F 5/32 (2006.01) B61F 5/36 (2006.01)

Patent

CA 1226975

Analysis of Reservoir Pore Complexes Abstract Analog signals corresponding to color images or pixels of a thin section of a rock reservoir are digi- tized and then filtered to isolate the pixels repre- sentative of pores in the thin section. The pores so isolated are then counted, measured for their total pore perimeter and labelled. The pixels representative of pores are then pro- gressively eroded and dilated, pursuant to which one layer of pixels on the surface is eroded and, if a seed pixel remains, one layer of pixels is added. Thereafter, the original object undergoes two suc- cessive erosions followed by two dilations if a seed pixel remains. Successive iterations of the erosion and dilation cycle continue until the last erosion eliminates the seed pixel. The number of pixels lost with each degree of erosion constitutes a pore spec- trum consisting of information relating to the total amount of pore image lost each erosion-dilation cycle, the pore size lost each erosion-dilation cycle and the pore roughness lost each cycle. The spectra developed from the erosion-dilation cycle and corresponding to each pore complex are then analyzed into end members and the end member propor- tions for each field of view are calculated.

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