| 南华北盆地中二叠统“石盒子组”岩相古地理及储、盖特征研究 |
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| 引用本文： | 张翔,田景春,曹桐生.南华北盆地中二叠统“石盒子组”岩相古地理及储、盖特征研究[J].地层学杂志,2011(4):431-439. |
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| 作者姓名： | 张翔 田景春 曹桐生 |
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| 作者单位： | 成都理工大学"油气藏地质及开发工程"国家重点实验室成都理工大学沉积地质研究院 |
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| 基金项目： | “全国油气资源战略选区调查与评价”专项《南华北地区中生界—新元古界层序地层与岩相古地理研究》(XQ-2007-02-3-1) |
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| 摘 要： | 以南华北盆地野外剖面、钻井及钻孔为研究对象,在地层划分、对比的基础上,将南华北盆地＂石盒子组＂划分为三角洲和潟湖沉积相,其中三角洲可进一步识别出三角洲平原、三角洲前缘亚相及众多微相。在单井及井间沉积相对比研究基础上,结合地震剖面对比,对南华北盆地上、下石盒子组岩相古地理平面分布及垂向演化特征进行了详细研究,结果表明：在...
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| 关 键 词： | 沉积相 岩相古地理 储盖特征 上石盒子组 下石盒子组 二叠系 华北 |
RESEARCH ON LITHOFACIES PALAEOGEOGRAPHY AND RESERVOIR,CAP ROCK CHARACTERISTICS OF MIDDLE PERMIAN SHIHEZI FORMATION IN SOUTHERN NORTH CHINA BASIN |
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| ZHANG Xiang,TIAN Jing-chun and CAO Tong-sheng.RESEARCH ON LITHOFACIES PALAEOGEOGRAPHY AND RESERVOIR,CAP ROCK CHARACTERISTICS OF MIDDLE PERMIAN SHIHEZI FORMATION IN SOUTHERN NORTH CHINA BASIN[J].Journal of Stratigraphy,2011(4):431-439. |
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| Authors: | ZHANG Xiang TIAN Jing-chun and CAO Tong-sheng |
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| Institution: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059 |
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| Abstract: | Based on stratigraphic division and stratigraphic correlation,the division plan of sedimentary facies of southern North China Basin was determined through detailed analysis to field profiles,well and borehole.Middle Permian Shihezi formation in southern North China Basin can be classified into delta facies and lagoonal facies.Thereinto,two forms sedimentary subfacies that are delta plain,delta front and many microfacies are identified from delta facies.Combining with regional seismic profiles,the paper makes thorough study on single well and interwell,then carries on detailed research to the plane distribution and vertical evolution characteristics of lithofacies palaeogeography characteristics of Middle Permian Shihezi formation in southern North China Basin.From the north to the south,the sedimentary facies plane distribution expressed as delta plain-delta front-lagoonal facies during the deposition of the upper and lower Shihezi formation,moreover the paleogeographic features in various phases has both succession and discrepancy.Finally,a research about lithofacies palaeogeography and reservoir,cap rock characteristics of Shihezi formation in southern North China Basin was operated on the basis of research result stated above and synthetical analysis data.The distributary channel,submarine distributary channel and river mouth bars are best reservoir of the study area.The reservoir pore space consists of primary intergranular pore,intergranular dissolved pore,intragranular dissolved pore,moreover the reservoir space of Upper Shihezi formation is superior compared with that of Lower Shihezi formation.As the stable distributed regional mudstone cap,Shihezi formation has the following key features,such as difficult to break through,low permeability,good sealing property of oil and gas,great thickness and distributing stabilization in landscape orientation.The research result about sedimentary facies and oil-gas geological characteristics we have reached wil provide a significant reliable geological data for the distribution regularity of favorable reservoir and oil-gas prediction of southern North China Basin. |
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| Keywords: | sedimentary facies lithofacies palaeogeography reservoir and cap rock characteristics Shihezi Formation North China |
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