兴西洼陷沙四段近岸水下扇的识别
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摘要
兴西洼陷是一个位于辽西凹陷中段的狭长沉积构造,以往大多认为该区沙四段地层不发育,从而制约了该区油气勘探的深化。本文通过对兴西洼陷的地震层位进行对比,落实了该区的最有利储层———沙四段。综合分析区域构造背景和沉积特点,认为该区存在东部陡坡带控制下的近岸沉积扇体;运用多种物探技术手段预测和刻画了一系列近岸水下扇储集体。部署在该区的兴西2井成功揭示了沙四段近岸沉积扇体的存在,并喜获工业油流,打开了该区的油气勘探局面。
Xingxi sub-sag in middle of western sag of Liaohe Basin is a narrow and long sedimentary sub-sag.It was considered that the 4th member of Shahejie Formation was not well developed in the region.Based on the comparison of seismic strata of Xingxi sub-sag,we see the 4th member of Shahejie Formation as the most favorable reservoir in the area.By comprehensive analysis of regional tectonic background and sedimentary characteristics,we conclude that there are coastal sedimentary fan bodies controlled by east fault zone.We predict and delineate a series of near-shore submarine fan reservoirs with various geophysical techniques.Well XX2 in this area,with commercial oil discovery,reveals the existence of sedimentary fan bodies in the 4th member of Shahejie Formation.
Xingxi sub-sag in middle of western sag of Liaohe Basin is a narrow and long sedimentary sub-sag.It was considered that the 4th member of Shahejie Formation was not well developed in the region.Based on the comparison of seismic strata of Xingxi sub-sag,we see the 4th member of Shahejie Formation as the most favorable reservoir in the area.By comprehensive analysis of regional tectonic background and sedimentary characteristics,we conclude that there are coastal sedimentary fan bodies controlled by east fault zone.We predict and delineate a series of near-shore submarine fan reservoirs with various geophysical techniques.Well XX2 in this area,with commercial oil discovery,reveals the existence of sedimentary fan bodies in the 4th member of Shahejie Formation.
引文
[1]赵贤正,金凤鸣,王权等.陆相断陷盆地洼槽聚油理论及其应用——以渤海湾盆地冀中拗陷和二连盆地为例.石油学报,2011,32(1):18～24Zhao Xian-zheng,Jin Feng-ming,Wang Quan et al.Conti-nental facies downfaulted basin bottom groove oil accumu-lation theory and its application—Taking Bohai Bay Basinin the Jizhong depression and even the two basin as an ex-ample.Acta Petrolei Sinica,2011,32(1):18～24
[2]孙庭斌,孙立志,喻林等.清水洼陷及周边岩性圈闭研究与勘探目标评价.内部成果报告,中国石油东方地球物理公司研究院地质研究中心,2009
[3]袁井菊,陈明,何晓松等.辽河东部凹陷古近系层序地层格架及成因分析.石油地球物理勘探,2006,41(3):350～356Yuan Jing-ju,Chen Ming,He Xiao-song et al.Analysisof Tertiary sequence-stratigraphic frame-work and gen-esis in east Liaohe sag.OGP,2006,41(3):350～356
[4]李廷辉,梁蕙兰,胡永军等.关家堡滩海区近岸水下扇体研究及勘探意义.石油地球物理勘探,2005,40(5):561～564Li Ting-hui,Liang Hui-lan,Hu Yong-jun et al.Study ofnear-shore underwater fans in Guanjiapu beach area and itsexploration meaning.OGP,2005,40(5):561～564
[2]孙庭斌,孙立志,喻林等.清水洼陷及周边岩性圈闭研究与勘探目标评价.内部成果报告,中国石油东方地球物理公司研究院地质研究中心,2009
[3]袁井菊,陈明,何晓松等.辽河东部凹陷古近系层序地层格架及成因分析.石油地球物理勘探,2006,41(3):350～356Yuan Jing-ju,Chen Ming,He Xiao-song et al.Analysisof Tertiary sequence-stratigraphic frame-work and gen-esis in east Liaohe sag.OGP,2006,41(3):350～356
[4]李廷辉,梁蕙兰,胡永军等.关家堡滩海区近岸水下扇体研究及勘探意义.石油地球物理勘探,2005,40(5):561～564Li Ting-hui,Liang Hui-lan,Hu Yong-jun et al.Study ofnear-shore underwater fans in Guanjiapu beach area and itsexploration meaning.OGP,2005,40(5):561～564
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