| 鄂尔多斯盆地下寺湾地区三叠系下组合地层石油地质特征及勘探方向 |
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| 引用本文： | 宋和平,张炜. 鄂尔多斯盆地下寺湾地区三叠系下组合地层石油地质特征及勘探方向[J]. 西北地质, 2011, 44(4): 122-131 |
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| 作者姓名： | 宋和平 张炜 |
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| 作者单位： | 1. 延长油田股份有限公司下寺湾采油厂,陕西延安,716100
2. 陕西省地质矿产勘查开发局物化探队,陕西西安,710043 |
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| 基金项目： | 下寺湾采油厂“下寺湾地区三叠系下组合地层石油地质综合评价”(2008年度科研项目) |
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| 摘 要： | 三叠系延长组上组合地层作为下寺湾油田的主力油层段,经过数十年的勘探开发,其后备资源日显不足.通过对近年来下寺湾地区探井含油层段的分析研究,发现三叠系延长组下组合地层长7一长10段具有较好的油气显示.本文针对延长组下组合地层长7、8段,对其沉积微相、砂体形态、储盖组合、构造形态、岩性组合特征进行分析探讨,为下寺湾油田持续稳步发展寻找到层系接替资源.
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| 关 键 词： | 三叠系延长组 层系接替 储层特征 构造形态 |
Oil Geological Characteristics and Exploration Trend of Triassic Lower Group in Xiasiwan Area of Ordos Basin |
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| SONG He-ping , ZHANG Wei. Oil Geological Characteristics and Exploration Trend of Triassic Lower Group in Xiasiwan Area of Ordos Basin[J]. Northwestern Geology, 2011, 44(4): 122-131 |
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| Authors: | SONG He-ping ZHANG Wei |
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| Affiliation: | SONG He-ping1,ZHANG Wei2(1.Xiasiwan Oil Production Plant of Yanchang Oilfield Incorporated Company,Yan'an 716100,China,2.Team of Geophysical and Geochemical Exploration,Bureau of Geology and Mineral Resources Exploration and Development of Shaanxi,Xi'an 710043,China) |
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| Abstract: | Triassic upper group of the Yanchang Formation in Xiasiwan oilfield,as the next section of the main reservoir,after decades of exploration and development,its reserve resources become increasingly inadequate.By analysis on oil-bearing section in the Xiasiwan area in recent years,we found that the lower group of Triassic Yanchang Formation Chang 7-Chang10 segments showed good oil and gas resources.By discussing the sedimentary facies,sand body shape,reservoir-cap,structural features,lithological assemblage o... |
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| Keywords: | Yanchang Formation of Triassic system layer replacement deposition characteristics structural evolution |
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