塔里木盆地轮南地区侏罗系砂岩储层成岩作用研究
网络出版日期: 2011-10-20
Study on diagenesis of Jurassic sandstone reservoirs in Lunnan area, Tarim Basin
Online published: 2011-10-20
郑艳荣 , 屈红军 , 冯杨伟 , 王云 , 王力 , 李敏 . 塔里木盆地轮南地区侏罗系砂岩储层成岩作用研究[J]. 岩性油气藏, 2011 , 23(5) : 21 -27 . DOI: 10.3969/j.issn.1673-8926.2011.05.005
Based on cast slice, scanning electronic microscope, X-diffraction, cathodoluminescence and physical properties, combined with previous researhes, the diagenesis of Jurassic sandstone reservoirs in Lunnan area, Tarim Basin is analyzed, and the types of diagenesis are defined. The study on diagenetic evolutionary series shows that the diagenetic evolution of Jurassic sandstone has already been in B stage of early diagenesis to initial period of A stage of late diagenesis, with the latter being the majority. Compaction destroyed the primary pore structure of Jurassic sandstone intensively. The strong dissolution of feldspar particles at the A stage of late diagenesis made the dissolved pores develop in Lower Jurassic sandstone reservoirs, which constitutes the necessary space for oil and gas accumulation. The intergranular micropores developed in illite, chlorite, illite-smectite mixed-layer greatly improved the reservoir performance ofMiddle and Upper Jurassic sandstone.
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