本文選題：瑪湖凹陷南斜坡 + 上烏爾禾組　； 參考：《沉積學(xué)報(bào)》2017年06期

【摘要】：通過巖芯相—測井相—地震相—分析化驗(yàn)數(shù)據(jù)對比,結(jié)合砂礫巖沉積野外考察實(shí)踐綜合歸納分析,認(rèn)為上烏爾禾組同生逆斷層控制的沖積扇—扇三角洲砂礫巖沉積體系整體呈進(jìn)積式沉積,具"沖積扇扇根(槽流帶)—沖積扇扇中/扇三角洲平原(辮流帶)—扇三角洲前緣(水下分流帶)—前扇三角洲/濱淺湖(夾雜水下扇)"相序特征,發(fā)育槽流、泥石流/砂質(zhì)碎屑流、辮狀河道、水下分流河道、扇面水道五種典型砂礫巖沉積微相類型。同生逆斷層帶不斷抬升剝蝕的累積效應(yīng),使近物源區(qū)沖積扇扇根沉積整體減薄,同時(shí)使同生逆斷層控制沉積相帶分異的趨勢越來越明顯。泥質(zhì)含量是控制擠壓背景下砂礫巖儲層質(zhì)量的關(guān)鍵因素,貧泥砂礫巖儲層成巖壓實(shí)減孔效應(yīng)弱,剩余粒間孔發(fā)育,且粗粒級顆粒內(nèi)部多發(fā)育壓碎縫溝通粒間孔隙,儲層質(zhì)量最佳。依據(jù)儲集空間組合類型將有利儲集相帶分為原生粒間孔—壓碎縫發(fā)育帶、原生粒間孔—次生溶孔發(fā)育帶兩大類。前者主要分布于構(gòu)造高部位近斷裂帶—中上斜坡帶;后者主要分布于中下部斜坡帶。
[Abstract]:Based on the comparison of core facies, logging facies, seismic facies and analysis data, combined with the field investigation of sandy gravel deposits, the comprehensive induction and analysis are made. It is considered that the sedimentary system of alluvial fan-fan delta sandstones controlled by the syngenic reverse faults of the Upper Wuerhe formation is an integral precession deposit. It is characterized by "alluvial fan root (trough current zone / alluvial fan middle / fan delta plain" (braided zone / fan delta front (underwater distributary zone) -front fan delta / shoreside shallow lake (inclusion underwater fan) facies sequence characteristic, developed trough flow, There are five typical sedimentary microfacies types: debris flow / sandy debris flow, braided channel, underwater distributary channel and sector channel. The cumulative effect of continuous uplift and denudation of syngenic reverse fault zone makes the deposition of alluvial fan roots in the near-provenance region decrease as a whole, and the trend of controlling sedimentary facies zone differentiation by syngenic reverse fault becomes more and more obvious at the same time. The content of mud is the key factor to control the quality of sand and gravel reservoir under the extrusion background. The diagenetic compaction reduction effect is weak, the residual intergranular pore is developed in the poor mud sand gravel reservoir, and the intergranular pore is more developed in the coarse grained grain, and the crushed fracture communicates with the intergranular pore in the coarse grained grain. The reservoir quality is the best. According to the type of reservoir space assemblage, the favorable reservoir facies zone is divided into two types: primary intergranular pore zone, primary intergranular pore zone and secondary dissolved pore zone. The former is mainly distributed in the near fault zone and the middle and upper slope zone in the high part of the structure, while the latter is mainly distributed in the middle and lower slope zone.
【作者單位】： 中國石油杭州地質(zhì)研究院;新疆油田公司勘探開發(fā)研究院;
【基金】：%E7%A7%91%E6%8A%80%E6%94%BB%E5%85%B3%E9%A1%B9%E7%9B%AE(HX132-41528-15)~~" target="_blank">中油股份公司<新疆大慶>科技攻關(guān)項(xiàng)目(HX132-41528-15)~~
【分類號】：P618.13

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