准噶尔盆地克—百断裂带上盘石炭系内幕火山岩储集层特征及展布

发布时间：2018-02-25 08:41

本文关键词： 火山岩石炭系克—百断裂带准噶尔盆地　出处：《古地理学报》2017年04期 　论文类型：期刊论文

【摘要】：准噶尔盆地克—百断裂带上盘最新钻井发现,在石炭系顶面之下较深的内幕火山岩区域获得工业油流。通过岩心、薄片、扫描电镜、主量元素和岩石物性等资料,明确了研究区石炭系内幕火山岩储集层特征及展布。研究表明,克—百断裂带上盘石炭系内幕储集层顶面最大深度位于石炭系不整合面以下800 m,岩相(岩性)以爆发相空落亚相(凝灰岩)和溢流相下部亚相(安山岩)为主,储集空间以次生溶孔和构造缝为主。不同岩相具有不同类型和程度的成岩作用,经历了不同的孔隙演化过程。溢流相上部亚相和溢流相下部亚相孔隙演化程度最高。冷凝固结作用控制其原生孔隙的形成,构造破碎作用及溶蚀作用至关重要。受构造和溶蚀作用控制的Ⅰ类和Ⅱ类储集层为有效储集层,主要分布于克—百断裂附近。
[Abstract]:The latest drilling in the upper plate of the Ke-Bai fault zone in Junggar Basin has found that industrial oil flows are obtained in the deep inside volcanic rock areas below the top of the Carboniferous system. Data such as cores, thin slices, scanning electron microscopy, principal elements and petrophysical properties are obtained. The characteristics and distribution of the inside volcanic rock reservoir of Carboniferous in the study area are clarified. The maximum depth of the top surface of the upper Carboniferous inside reservoir is 800 m below the unconformity surface of the Carboniferous, and the lithofacies (lithology) is dominated by the eruptive facies (tuff) and the lower subfacies (andesite) of the overflow facies. The reservoir space is dominated by secondary dissolved pores and structural fractures. Different lithofacies have different types and degrees of diagenesis. The porosity evolution of the upper subfacies and the lower subfacies of the overflow phase is the highest. The condensation and consolidation control the formation of the primary pore. Tectonic fragmentation and dissolution are very important. The type I and II reservoirs controlled by tectonics and dissolution are effective reservoirs, which are mainly distributed near Yu Ke-100 fault.
【作者单位】：中国石油大学(北京)油气资源与探测国家重点实验室;中国石油大学(北京)地球科学学院;中国石油新疆油田分公司实验检测研究院;
【分类号】：P618.13

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