Log ASCII Standard (LAS) Files for Geophysical (Gamma Ray) Wireline Well Logs and Their Application to Geologic Cross Section C-C‘ Through the Central Appalachian Basin

Trippi, Michael H.; Crangle, Robert D., Jr.

Abstract:

U.S. Geological Survey (USGS) regional geologic cross section C-C‘ (Ryder and others, 2008) displays key stratigraphic intervals in the central Appalachian basin. For this cross section, strata were correlated by using descriptions of well cuttings and gamma ray well log traces. This report summarizes the procedures used to convert gamma ray curves on paper well logs to the digital Log ASCII (American Standard Code for Information Interchange) Standard (LAS) format using the third-party software application Neuralog. The procedures could be used with other geophysical wireline logs also. The creation of digital LAS files from paper well logs by using Neuralog is very helpful, especially when dealing with older logs with limited or nonexistent digital data. The LAS files from the gamma ray logs of 11 wells used to construct cross section C-C‘ are included in this report. They may be downloaded from the index page as a single ZIP file.

Genre:

USGS Numbered Series

ProdID:

97303

Citation Author:

Trippi, Michael H.; Crangle, Robert D., Jr.

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U.S. Geological Survey

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ENGLISH

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0430000

Citation LatS:

0370000

Citation LonE:

-0740000

Citation LonW:

-0850000

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Report: 13 p.; Zip File

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U.S. Geological Survey

Citation Series:

Open-File Report

Citation Series Code:

OFR

Citation Series Number:

2009-1021

Citation Search Results Text:

Log ASCII Standard (LAS) Files for Geophysical (Gamma Ray) Wireline Well Logs and Their Application to Geologic Cross Section C-C‘ Through the Central Appalachian Basin; 2009; OFR; 2009-1021; Trippi, Michael H.; Crangle, Robert D., Jr.