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The AAPG/Datapages Combined Publications Database

Houston Geological Society Bulletin


Houston Geological Society Bulletin, Volume 47, No. 3, November 2004. Pages 55-55.

Abstract: Determining a True Textural Permeability by Modeling Key NMR Outputs Using Only Conventional Log Data


Allen Howard
Nu-Tech Energy Alliance
Humble, Texas

In the ongoing research and development process to enhance formation evaluation, establishing a relationship to permeability has always been a key goal. In the early 1990’s the commercialization of nuclear magnetic resonance (NMR) logging in the oil and gas industry provided the first such link through the direct measurement of the fluid volume and the distribution of that fluid in the rock.

This link to permeability set the stage for several refinements in NMR over the last decade, the results of which have dramatically shaped how the industry views bypassed pay. By utilizing conventional log data, textural or pore size changes within the reservoir can be detected and modeled. These models allow companies to take a new look at fields that have not had the benefit of such NMR measurements

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