發(fā)布時(shí)間：2019-01-03 10:22

【摘要】：利用巖芯、薄片、錄井和測(cè)井等資料,在識(shí)別各級(jí)次基面旋回界面類型及特征的基礎(chǔ)上,將準(zhǔn)噶爾盆地吉木薩爾凹陷蘆草溝組劃分為1個(gè)長(zhǎng)期旋回,6個(gè)中期旋回,44個(gè)短期旋回,建立高分辨率層序地層對(duì)比格架。在總結(jié)地球化學(xué)、巖性、沉積構(gòu)造、電性特征的基礎(chǔ)上,綜合分析古生物化石、測(cè)井等資料,以識(shí)別沉積相標(biāo)志為主,進(jìn)行單井、連井及平面沉積相分析。研究結(jié)果認(rèn)為,吉木薩爾凹陷蘆草溝組為咸化湖泊—三角洲沉積體系,巖性復(fù)雜多變,在機(jī)械、化學(xué)、生物等沉積作用共同影響下,形成由細(xì)粒碎屑巖、泥巖、碳酸鹽巖構(gòu)成的混積巖層。蘆草溝組發(fā)育上、下兩個(gè)致密油甜點(diǎn)體,上甜點(diǎn)體(SSC37—SSC42)為咸化湖相沉積,微相類型以灘壩為主;下甜點(diǎn)體(SSC6—SSC17)以三角洲前緣沉積為主,微相類型為席狀砂、遠(yuǎn)砂壩等。利用開發(fā)試驗(yàn)區(qū)及水平井部署區(qū)的井多、井密的有利條件,對(duì)沉積相邊界進(jìn)行控制,從而實(shí)現(xiàn)平面微相的精細(xì)刻畫,研究表明蘆草溝組優(yōu)質(zhì)甜點(diǎn)以灘壩主體微相為主,主要集中發(fā)育在凹陷中心低隆起處。
[Abstract]:Based on the data of core, thin slice, logging and logging, the Lucaogou formation in Jimusar sag of Junggar Basin is divided into one cycle and six middle cycles on the basis of identifying the types and characteristics of subbasal cycle interface at all levels. High resolution sequence stratigraphic correlation framework was established in 44 short term cycles. On the basis of summarizing geochemistry, lithology, sedimentary structure and electrical characteristics, the paleontological fossils and logging data are analyzed synthetically, and the single well, even well and plane sedimentary facies are analyzed mainly by identifying sedimentary facies. The results show that the Lucaogou formation in Jimusar sag is a brackish lacustrine-delta sedimentary system with complex and changeable lithology. Under the influence of mechanical, chemical, biological and other sedimentary processes, the formation of fine clastic rocks and mudstones is formed. A mixed formation of carbonate rock. On the development of Luchaogou formation, the next two dense oil desserts, the upper desserts (SSC37-SSC42) are saline lacustrine deposits, and the microfacies are mainly beach and dam. The lower dessert body (SSC6-SSC17) is dominated by delta front sedimentation, and the microfacies types are sheet sand, far sand bar and so on. Taking advantage of the advantages of many wells and dense wells in the development test area and horizontal well deployment area, the boundary of sedimentary facies is controlled, and the fine delineation of planar microfacies is realized. The research shows that the main microfacies of the high quality desserts in Lucaogou formation are beach and dam body. It is mainly concentrated at the low uplift in the center of the sag.
【作者單位】： 東北石油大學(xué)地球科學(xué)學(xué)院;新疆油田公司勘探開發(fā)研究院;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)項(xiàng)目(2013AA064903) 國(guó)家自然科學(xué)基金(41272153) 國(guó)家科技重大專項(xiàng)(2011ZX05006-005) 黑龍江省普通高等學(xué)校青年學(xué)術(shù)骨干支持計(jì)劃項(xiàng)目(1254G003)~~
【分類號(hào)】：P618.13
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本文編號(hào)：2399242