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Some applications of clay mineralogy to reservoir description

A. Hurst and J. S. Archer
Some applications of clay mineralogy to reservoir description (in Features of mineral diagenesis in hydrocarbon reservoirs, R. K. Harrison (editor) and D. J. Morgan (editor))
Clay Minerals (October 1986) 21 (4): 811-826

Abstract

Study of sandstone diagenesis provides information about the origin, texture, distribution and composition of clay minerals, which in turn is used in reservoir description. Three examples of the use of clay mineralogy in reservoir description are given. (1) Kaolinite commonly forms pore-filling cements which are pervasive in specific sandstone intervals. It is shown that water-zone kaolinization homogenizes and lowers the porosity and permeability relative to the oil zone; in a reservoir model different O/K relationships are defined above and below the oil-water contact. (2) An occurrence of chlorite in dish-structured horizons is shown to increase horizontal permeability and decrease formation resistivity. The sensitivity of the neutron porosity log to the chlorite cement reduces the usefulness of the log for porosity evaluation. Uncritical application of wireline logs to define reservoir parameters can give pessimistic reservoir evaluation. (3) Sand production can be related to wettability, which in turn is strongly influenced by clay mineralogy. A perforation strategy to minimize sand production may then be based on knowledge of the clay mineralogy of a reservoir.


ISSN: 0009-8558
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 21
Serial Issue: 4
Title: Some applications of clay mineralogy to reservoir description
Title: Features of mineral diagenesis in hydrocarbon reservoirs
Author(s): Hurst, A.Archer, J. S.
Author(s): Harrison, R. K.editor
Author(s): Morgan, D. J.editor
Affiliation: Statoil, Dep. Reservoir Eval., Stavanger, Norway
Pages: 811-826
Published: 198610
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
Meeting name: Mineralogical Society, Clay Minerals Group, and Petroleum Exploration Society of Great Britain, joint meeting on Features of mineral diagenesis in hydrocarbon reservoirs
Meeting location: Cambridge, GBR, United Kingdom
Meeting date: 19850402Apr. 2-4, 1985
References: 27
Accession Number: 1987-039788
Categories: Economic geology, geology of energy sourcesSedimentary petrology
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Energy Resour. Consult., GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1987
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