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Science in China Series D: Earth Sciences

, Volume 44, Issue 4, pp 307–317 | Cite as

Quantification of clay minerals by combined EWA/XRD method

Application in Triassic reservoirs of the Morecambe Gas Field, East Irish Sea, UK
  • Jianhong Xu
  • T. R. Astin
  • Mao Pan
Article

Abstract

Illite has been considered the main constraint on permeability in the Morecambe Gas Field, East Irish Sea, UK. Previous research has emphasized the morphology rather than the amount of clay minerals. By applying a new method of clay mineral quantification, EWA/XRD, and applying statistical analysis methods, we are able to establish a quantitative model of illite distribution in the field. The result also leads to a better understanding of permeability distribution in reservoir sandstones.

Keywords

clay mineral quantification EWA XRD Triassic Morecambe 

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Copyright information

© Science in China Press 2001

Authors and Affiliations

  1. 1.Department of GeographyPeking UniversityBeijingChina
  2. 2.PRISReading UniversityUK
  3. 3.Department of GeologyPeking UniversityBeijingChina

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