本文選題：混積巖 + 巖相��； 參考：《石油學(xué)報》2017年09期

【摘要】：通過露頭精細觀察、薄片鑒定與X射線衍射等方法,對具有咸水沉積背景的準(zhǔn)噶爾盆地南緣蘆草溝組與吐哈盆地西北緣塔爾朗組的混積特征進行研究,提出"混積相帶"的概念來表征"湖盆中發(fā)育混積巖和混積層系的相帶",并厘定了研究區(qū)"混積巖"的定義,建立一種新的混積巖分類命名方案,進而系統(tǒng)研究了混積相帶的巖相、沉積相特征,并預(yù)測了有利相區(qū)。"混積巖"為"陸源碎屑與內(nèi)源非后期成巖作用形成的碳酸鹽組分在同一巖層內(nèi)混合形成的沉積巖",陸源碎屑與碳酸鹽組分的含量不存在一個具體的下限標(biāo)準(zhǔn)。研究區(qū)混積相帶內(nèi)大部分粉砂巖、碳酸鹽巖與泥頁巖和少部分砂巖主要由陸源碎屑顆粒、碳酸鹽組分和黏土礦物構(gòu)成,屬于混積巖,以三組分的相對含量50%為界將混積巖劃分為(粉)砂巖、碳酸鹽巖和正混積巖3大類,進一步劃分為9小類。在此基礎(chǔ)上,根據(jù)露頭的巖性、粒度、沉積構(gòu)造和顏色等特征在混積相帶內(nèi)共識別出21種巖相類型和9種巖相組合,依此將混積相帶劃分為近岸水下扇外扇、扇三角洲前緣、濁積扇和半深湖—深湖。綜合露頭觀察、有機碳測試、物性測試及掃描電鏡觀察等方法,認為半深湖—深湖與濁積扇為混積相帶內(nèi)的有利相區(qū),二者內(nèi)部的烴源巖、儲集巖條件相對較好,可形成良好的生儲組合。
[Abstract]:Through the outcrop observation, thin section analysis and X ray diffraction method, with salt water sedimentary background of Lucaogou Formation in southern margin of Junggar basin and Tuha basin in the northwestern margin of the thar Lang hunji group characteristic research, put forward "hunji facies" concept to characterize the basin development of hunji rock and hunji sequence the belt ", and defined the definition of" hunji rock ", the establishment of a new hunji rock classification and naming scheme, system of mixed facies belt lithofacies, sedimentary facies, and to predict favorable facies." hunji rock "into" debris and endogenous non Lu Yuan "the late sedimentary rocks into carbonate group formation in the same strata in the mixed form, Lu Yuan clastic and carbonate component content does not have a specific minimum standards. The study area of hunji facies most siltstone, carbonate rock and shale and sandstone is mainly composed of a small part of the land The source of detrital carbonate composition, composition and clay minerals, which belongs to the mixosedimentite in 50%, the relative content of three components for the community will be divided into hunji rock (powder) sandstone, carbonate rock and hunji rock is further divided into 3 categories, 9 small classes. On this basis, according to the outcrop lithology the size, color and other characteristics, sedimentary structure and sedimentary facies in the mixed zone identified 21 lithofacies and 9 lithofacies, sedimentary facies belt can be mixed into the nearshore subaqueous fan and outer fan, fan delta, turbidite fan and semi deep lake and deep lake. Comprehensive outcrop observation, organic carbon test, physical test and scanning electron microscopy method, that the semi deep to deep lacustrine and turbidite fan facies as hunji in favorable facies zone, hydrocarbon source rocks within the two, reservoir conditions are relatively good, students can form good reservoirs.

【作者單位】： 中國石油大學(xué)地球科學(xué)與技術(shù)學(xué)院;中國石油化工股份有限公司勝利油田分公司勘探開發(fā)研究院;中國石油化工集團公司勝利石油管理局博士后科研工作站;中國石油化工股份有限公司勝利油田分公司東勝集團股份公司;
【基金】：國家自然科學(xué)基金項目(No.41372107)資助
【分類號】：P618.13

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