Patent ID: 6823298
Filing Date: 2004-11-23
Classification: E21B,G01N

Abstract:
An improved method for presenting pyrolytic oil-productivity index (POPI) data for characterizing reservoir rock from different geological regions A and B, the method comprising:a) providing a POPIo(A) value for the region A; b) calculating the value for a normalizing factor FNORM(A) for the region A in accordance with equation (2A): FNORM&it;â€ƒ&it;(A)=100POPIo&it;â€ƒ&it;(A);(2&it;A)c) applying the normalizing factor for a given reservoir rock sample â€œaâ€  from the region A in accordance with the following equation (3A): FNORM(A)Ã—POPI(a)=POPINORM(A)(a);â€ƒâ€ƒ(3A) d) recording the value of POPINORM(A)(a); e) providing a POPIo(B) value for the region B; f) calculating the value for a normalizing factor FNORM(B) for region B in accordance with equation (2B): FNORM&it;â€ƒ&it;(B)=100POPIo&it;â€ƒ&it;(B);(2&it;B)g) applying the normalizing factor for a given reservoir rock sample â€œaâ€  from the region B in accordance with the following equation (3A1): FNORM(B)Ã—POPI(a)=POPINORM(B)(a);â€ƒâ€ƒ(3A1) â€ƒand h) recording the value of POPINORM(B)(a), whereby the values of POPINORM(A)(a) and POPINORM(B)(a) are directly comparable to determine the relative quality of the reservoir rock in the regions A and B.