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Beyond gamma ray; determining a geosteering program for a new unconventional reservoir

Jason Pitcher and Frederic Gallice
Beyond gamma ray; determining a geosteering program for a new unconventional reservoir (in Well geosteering, Carlos Torres-Verdin and John Zhou)
Leading Edge (Tulsa, OK) (May 2015) 34 (5): 514-522

Abstract

Geosteering programs used in unconventional reservoirs typically are restricted to using basic natural gamma-ray tools. Although that approach might be effective, it does not mean that all unconventional reservoirs are amenable to the same approach. A reservoir in the South Central Oklahoma Oil Province is examined to determine what kind of geosteering program can add value, with tool-selection criteria being developed in consideration of the reservoir character. Analysis of the usefulness of gamma-ray, resistivity, neutron, density and sonic tools can result in notes on operational effectiveness and impact in terms of planning a geosteering program. Pilot-log petrophysical models can be created and examined for different tool configurations and styles to assist in program design. Examples illustrate the variability in tool design and impact on planning. The results demonstrate that an integrated approach to program design and tool selection that involves geologic, petrophysical, and geomechanical considerations can determine a methodology that meets operational needs. Additional considerations pertain to selection of tools available and their operational value in horizontal unconventional well development.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 34
Serial Issue: 5
Title: Beyond gamma ray; determining a geosteering program for a new unconventional reservoir
Title: Well geosteering
Author(s): Pitcher, JasonGallice, Frederic
Author(s): Torres-Verdin, Carlos
Author(s): Zhou, John
Affiliation: Cameron, International
Pages: 514-522
Published: 201505
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 13
Accession Number: 2015-055326
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col.
N33°34'60" - N37°00'00", W103°00'00" - W94°25'00"
Secondary Affiliation: Vitruvian Exploration II, III, International
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201525
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