【摘要】：遼河西部凹陷雷家地區(qū)具備形成良好圈閉的石油地質(zhì)條件。研究以層序地層理論為指導(dǎo),通過地震、測井、井震結(jié)合等手段進行對層序界面的識別與劃分,將雷家地區(qū)沙三段劃分為3個層序:SQ1、SQ2和SQ3,基本上對應(yīng)于沙三下、沙三中和沙三上亞段。雷家地區(qū)主要沉積相類型為扇三角洲相及湖泊相。研究區(qū)沉積相在東西向變化較快,南北向變化較穩(wěn)定。整個沙三段自東向西均依次發(fā)育扇三角洲平原、扇三角洲前緣、前扇三角洲和半深湖-深湖亞相等沉積體系;其中沙三下亞段(SQ1)扇三角洲沉積體系分布的面積最大,向西延伸最遠;沙三上亞段(SQ3)次之;沙三中(SQ2)分布面積最小。綜合遼河西部凹陷烴源巖、儲集層、生儲蓋組合、油氣運移和圈閉條件等分析,預(yù)測研究區(qū)存在4個有利區(qū)勘探帶。
[Abstract]:The Lejia area in the western depression of Liaohe River has the petroleum geological conditions of forming good traps. Guided by the theory of sequence stratigraphy, the identification and division of sequence boundaries are carried out by means of seismic, well logging and well-seismic combination. The third member of the Shahejie formation in Leijia area is divided into three sequences: SQ1,SQ2 and SQ3, basically correspond to the lower part of the third member of the Shahejie formation. The upper sub-segment of es _ 3 and S _ 3. The main sedimentary facies in Leijia area are fan delta facies and lacustrine facies. The sedimentary facies in the study area changed rapidly in the east-west direction and stable in the south-north direction. From east to west, fan delta plain, fan delta front, front fan delta and semi-deep lake-deep lake sub-equal sedimentary system are developed from east to west. The distribution area of the fan delta sedimentary system in the lower part of the third member (SQ1) is the largest and extends westward, followed by the upper submember of the third member (SQ3), and the distribution area of the middle part of the third member (SQ2) is the smallest. Based on the analysis of source rocks, reservoirs, source-reservoir-cap assemblages, hydrocarbon migration and trap conditions in the western Liaohe depression, it is predicted that there are four favorable exploration zones in the study area.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13
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本文編號：2452231