Influence of chlorite film on reservoir porosity:A case study from the second member of Yanchang Formation in Ordos Basin
Online published: 2008-12-15
Chlorite film developed well in the reservoir sandstone in the second member of Triassic Yanchang Formation in Ordos Basin. According to the regional geologic information and core slice observation, it is concluded that chlorite film formed in the early diagenetic stage, and the porosity increased with the increasing of chlorite film content. So chlorite film takes a constructive diagenesis on the reservoir porosity in this area. This effect is manifested mainly in three aspects: repressing the quartz overgrowth, enhancing the mechanical strength of rocks and resistance to compaction, and repressing the pressure solution by occupying the space of carbonate cement.
TAO Bie , FU Heng . Influence of chlorite film on reservoir porosity:A case study from the second member of Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs, 2008 , 20(4) : 71 -74 . DOI: 10.3969/j.issn.1673-8926.2008.04.013
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