About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
AAPG Bulletin, V.
1Manuscript received April 14, 1997;
revised manuscript received March 23, 1998; final acceptance April 15,
1998.
2Amoco Canada Petroleum Company Ltd.,
240-4 Avenue SW, P.O. Box 200, Station M, Calgary, Alberta T2P 2H8, Canada;
e-mail: mahodgkins@amoco.com
3Phillips Petroleum Company, 116 Geoscience
Building, Bartlesville, Oklahoma 74004.
ABSTRACT
Nuclear magnetic
resonance (NMR) technology from
laboratory data and well logs is rapidly gaining acceptance as a petrophysical
tool for evaluating reservoir quality. The evaluation of laboratory NMR
data as a core analysis technique shows that NMR relaxation time distributions
match independent estimates of pore-size distributions. These other pore-size
estimates come from grain-size analyses, pore-throat distributions from
mercury porosimetry, thin-section petrography, and permeability values.
Irreducible water-saturation estimates from NMR-based pore-size distributions
also correspond well with independent measures of irreducible water from
special core flood tests.
In this study, we look at the relaxation time distributions extracted from laboratory and downhole NMR measurements to determine pore geometry and volumetrics within a reservoir. This understanding leads to a better overall reservoir characterization. Both core and log NMR data are used to demonstrate that there is a direct connection between NMR relaxation time distributions and the fundamental property of pore size in sandstones. This description of pore-size distributions allows us to estimate permeability and irreducible water saturation. Additionally, the NMR logs accurately characterize the NMR core (lab) measurements and provide important information that enhances the description of low-resistivity pay.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |
AAPG Member?
Please login with your Member username and password.
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at members@aapg.org.