Patent ID: 9121808
Filing Date: 2015-09-01
Classification: G01N,G01V

Abstract:
1. A process to quantitatively determine effective and total porosity of carbonated sedimentary rocks, and morphologic characterization of their micro and nanopores, which comprises obtaining specimens of carbonated sedimentary rock and subjecting the carbonated sedimentary rock specimens to: a. Determining rock dissolution factor (FDR) of a carbonated sedimentary rock specimen, b. Trimming a carbonated sedimentary rock specimen to obtain a trimmed rock specimen, c. Cleaning the trimmed rock specimen to obtain a cleaned rock specimen, d. Drying the cleaned rock specimen to obtain a dried rock specimen, e. Inspection of the cleaned rock specimen to obtain an inspected rock specimen, f. Marking of the cleaned rock specimen for orientation to form a marked rock specimen, g. Injecting a resin into the marked rock specimen to form a resin-injected rock specimen, h. Trimming the resin injected rock specimen, i. Framing of the resin injected rock specimen, j. Dissolving the resin injected rock specimen to form a pore network specimen having a resinous pore structure, k. Washing the pore network specimen and collecting the solid residues containing non-connected pores-casts and existing fines material, and drying the pore network specimen, l. Separating the non-connected pores-casts from the existing fine material, and determining the mass of the non-connected pores-casts and of the existing fine material, m. Measurement of the pore structure properties of the pore network specimen, n. Determination of effective and total porosity of the pore network specimen (η o. Sputtering of the pore network specimen, and p. Analysis of the pore network specimen with scanning electron microscopy to characterize the porosity of the pore network specimen in the range of scale sizes from micrometric to nanometric.