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Title Diagenetic controls on petrophysical properties of Dakota sandstone
Creator/Author Franklin, S.P. ; Tien, T.T.
Publication Date1988 Jan 01
OSTI IdentifierOSTI ID: 6591206
Report Number(s)CONF-880301-
Resource TypeConference
Specific TypeBook
Resource RelationAnnual meeting of the American Association of Petroleum Geologists; 20 Mar 1988; Houston, TX, USA
Subject020200 -- Petroleum-- Reserves, Geology, & Exploration ;030200 -- Natural Gas-- Reserves, Geology, & Exploration; NATURAL GAS DEPOSITS-- CATAGENESIS;NEW MEXICO-- PETROLEUM GEOLOGY;PETROLEUM DEPOSITS-- CATAGENESIS;SANDSTONES-- CATAGENESIS; CARBONATE ROCKS;CRETACEOUS PERIOD;DEPOSITION;EXPLORATION;GEOPHYSICS;PETROGENESIS;PETROGRAPHY;RESERVOIR ROCK;SCANNING ELECTRON MICROSCOPY;SEDIMENTARY BASINS;SHALES
Related SubjectELECTRON MICROSCOPY;FEDERAL REGION VI;GEOLOGIC AGES;GEOLOGIC DEPOSITS;GEOLOGIC STRUCTURES;GEOLOGY;MESOZOIC ERA;MICROSCOPY;MINERAL RESOURCES;NORTH AMERICA;RESOURCES;ROCKS;SEDIMENTARY ROCKS;USA
Description/Abstract The Cretaceous Dakota Sandstone at West Lindrith field on the eastern margin of the San Juan basin consists of a series of coarsening-upward, shallow marine sandstones interstratified with marine shales.^Petrographic and SEM analyses indicate that the sandstones are very fine to medium-grained litharenites that have been pervasively altered by the diagenetic processes of compaction, authigenesis, and dissolution.^The course of diagenesis varied spatially and temporally within the sandstones because of variations in primary composition and texture related to depositional environment.^Diagenetic alterations have profoundly affected the development of secondary rock properties such as porosity, permeability, and water saturation.^Each of the resulting ``diagenetic facies`` contains a unique authigenic mineral assemblage and a dominant secondary porosity type that reflect a specific sequence of diagenetic alterations.^Q-mode multivariate factor analysis of petrographic data has been used to delineate three compositional end members and to relate depositional environment, diagenesis, and reservoir quality.^Variations in reservoir properties within the sandstone can be ascribed to both primary lithologic contrasts and subsequent diverging diagenetic histories.^Factor analysis provides a promising approach to quantifying the relationship between siliciclastic depositional environments, diagenesis, and reservoir properties.
PublisherAmerican Association of Petroleum Geologists,Tulsa, OK
Country of PublicationUnited States
LanguageEnglish
FormatPages: vp.
AvailabilityAmerican Association of Petroleum Geologists, P.O. Box 979, Tulsa, OK 74101.
System Entry Date2001 May 13

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