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GEOREF RECORD

Oriented core; its use, error, and uncertainty

R. A. Nelson, L. C. Lenox and B. J. Ward
Oriented core; its use, error, and uncertainty
AAPG Bulletin (April 1987) 71 (4): 357-367

Abstract

Error analysis of oriented-core data indicates that: (1) the error in the coring and surveying procedure is + or - 5 degrees ; (2) the error inherent to the mechanical goniometer is + or - 2 3/4 degrees ; (3) the reproducibility error in using the goniometer is + or - 2 degrees for one analyst and + or - 4 degrees for multiple analysts; and (4) the uncertainty in interpolating and manipulating sets of orientation data may be quite large. Overall error in oriented core procedures should be considered + or - 11 degrees . A simple set of guidelines can be used to determine the most accurately oriented zones within the core. The guidelines are based on the physical character of the core, orientation scribes, and patterns displayed by plotting the azimuth of the orientation groove versus depth. Approximately 26% of oriented core analyzed fits the guidelines of most accurately oriented core.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 71
Serial Issue: 4
Title: Oriented core; its use, error, and uncertainty
Affiliation: Amoco Prod. Co., Africa and Middle East Reg., Houston, TX, United States
Pages: 357-367
Published: 198704
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
References: 15
Accession Number: 1987-047207
Categories: Economic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 6 tables
Secondary Affiliation: Amoco Prod. Co. Res., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1987
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