--> Abstract: Correlation of Porosity Types Derived From NMR Data and Petrographic Image Analysis, by M. C. Bowers, M. B. Carr, and C. J. Murray; #90928 (1999).

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BOWERS, MARK C.1, MATTHEW B. CARR2, and CHRISTOPHER J. MURRAY3
1Conoco
2Amoco Production Company
3Exxon Exploration Company

Abstract: Correlation of Porosity Types Derived From NMR Data and Petrographic Image Analysis

Summary

Petrographic Image Analysis (PIA) is used to derive porosity types from thin section. These pore types are then used to construct petrophysical models. Pore type information can also be derived from Nuclear Magnetic Resonance (NMR) relaxation data (T1 and T2). Pore types were derived from PIA and NMR for four sets of rocks (three sandstones and one carbonate). The pore types derived from PIA correlate with pore types derived from NMR. The correlation was identified for NMR pore types derived from T1 and T2 relaxation measurements. The correlation can be used to determine the surface relaxivity which is used to transform relaxation time to a characteristic length.

AAPG Search and Discovery Article #90928©1999 AAPG Annual Convention, San Antonio, Texas