本文選題：成巖作用　切入點(diǎn)：成巖序列　出處：《石油實(shí)驗(yàn)地質(zhì)》2017年03期 　論文類型：期刊論文

【摘要】：基于巖心觀察、鑄體薄片、掃描電鏡、陰極發(fā)光等測試,對(duì)鄂爾多斯盆地鎮(zhèn)涇地區(qū)延長組儲(chǔ)層開展了成巖作用類型、成巖序列等研究。結(jié)果表明:(1)溶蝕孔的形成不僅有長石溶蝕的貢獻(xiàn),而且還有長石蝕變形成沸石的二次溶蝕貢獻(xiàn);微裂縫的形成是石英在強(qiáng)烈壓實(shí)作用下導(dǎo)致的硅質(zhì)微碎裂;晶間孔和粒間孔的形成與成巖早期形成的白云石抑制壓實(shí)作用的進(jìn)行密切相關(guān);(2)早期形成的綠泥石膜,因成巖環(huán)境的改變,脫出大量的鐵和鎂離子,并在水解溶蝕作用下與絮凝膠體形成葉片狀綠泥石,封堵孔隙;(3)鎮(zhèn)涇地區(qū)成巖序列演化特征揭示,早期碳酸鹽膠結(jié)物自形程度比較高;綠泥石膜是成巖初期的產(chǎn)物,第二期綠泥石多呈葉片狀產(chǎn)出;早期濁沸石交代斜長石,在后期的溶蝕改造為儲(chǔ)層提供了較好的儲(chǔ)集空間;長石溶蝕形成書頁狀高嶺石。
[Abstract]:Based on core observation, thin casting, scanning electron microscope and cathodoluminescence measurements, diagenetic types of reservoirs in Yanchang formation in Zhenjing area, Ordos Basin, have been developed. The results show that the formation of dissolution pore is not only contributed by feldspar dissolution, but also by secondary dissolution of feldspar and deformed zeolite, and the formation of microfracture is caused by silica microfragmentation due to strong compaction. The formation of intergranular and intergranular pores is closely related to the inhibition of compaction by dolomite formed in the early diagenetic stage. (2) the chlorite film formed in the early stage of diagenesis has produced a large amount of iron and magnesium ions due to the change of diagenetic environment. The diagenetic sequence evolution characteristics in Zhenjing area under hydrolysis and dissolution and flocculation colloid formation of foliar chlorite reveal that the early carbonate cementation is relatively high, and the chlorite film is the product of early diagenesis, and the formation of chlorite film is the result of early diagenesis, and the characteristics of diagenetic sequence evolution in Zhenjing area indicate that the early carbonate cementation is relatively high. In the second stage, the chlorite occurs mostly in the form of leaves; the early clinopalite is metasomorphic, which provides a better reservoir space for the reservoir in the late stage of dissolution; and the feldspar dissolves to form a sheet kaolinite.
【作者單位】： 中國石化華東油氣分公司勘探開發(fā)研究院;中國石化華東油氣分公司石油工程技術(shù)研究院;中國石油大學(xué)(華東)非常規(guī)油氣與新能源研究院;中國石油勘探開發(fā)研究院;
【基金】：國家自然科學(xué)基金(41672125,41472105) 國家油氣重大專項(xiàng)(2011ZX05035,2016ZX05029002)資助
【分類號(hào)】：P618.13

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