2009•Inner Mongolia Petrochemical IndustryRequires access
A study on Chang6 sandstone diagenesis in Huachi-Baibao Area of Ordos Basin
Cheng Hao-jie
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Abstract
Based on the date analysis of casting lamella,scan electron microscope and X-ray diffractions for discussing and studying reservoirs.HuachiBaibao Area Chang6 formation sandstone reservoirs belong to the A late diagenesis,the diagenesis include compaction and pressolution,cementation,metasomasis,dissolution and fracture.The diagenetic facies of the study area can be divided into five types: carbonate cementation diagenetic facies,argillaceous cementation diagenetic facies,chlorite-carbonate cementation diagenetic facies,siliceous plug and overgrowth cementation diagenetic facies,feldspar dissolved diagenetic facies.The reservoir property of feldspar dissolved diagenetic facies is to be best,carbonate cementation diagenetic facies and siliceous plug and overgrowth cementation diagenetic facies destroy strongly to the reservoir property.