| 鄂尔多斯盆地中部三叠系延长统古异常超压的石油脉群证据 |
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| 引用本文： | 单业华.鄂尔多斯盆地中部三叠系延长统古异常超压的石油脉群证据[J].大地构造与成矿学,2000,24(4):329-332. |
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| 作者姓名： | 单业华 |
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| 作者单位： | 青岛海洋大学海洋地质系，山东青岛 266003 |
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| 基金项目： | 山东省自然科学基金;Y98E08078; |
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| 摘 要： | 石油脉群发育在鄂尔多斯盆地中部靖安油田南二区三叠系延长统主力储层里 ,由大量密集、相对短小的规则或不规则脉体组成。脉体为张裂成因 ,具有与近水平的层理大致平行的趋势 ,反映出群脉应该在高的异常超压 (即流体压力不小于静岩压力 )下形成。这种超压与油气运移密切相关 ,很可能说明当时在致密储层里存在着快速的油气运移
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| 关 键 词： | 石油脉群 异常超压 油气运移 |
| 文章编号： | 1001-1552(2000)04-329-04 |
| 修稿时间： | 2000年7月11日 |
OIL VEIN SWARM IN THE TRIASSIC YANCHANG FORMATION, CENTRAL ORDOS BASIN: EVIDENCE FOR ANCIENT ABNORMAL OVERPRESSURE IN OIL MIGRATION |
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| Abstract: | Oil vein swarm is found in the Triassic Yangchang Formation, central Ordos basin. It consists of numerous veins in a variety of shapes, comparatively short and filled with bitumen. The veins tend to have a horizontal dip that is parallel to bedding. Their occurrence suggests that abnormal overpressure should be required in the formation of the veins. The author herein considers the overpressure as an indicator of rapid migration of oil in low permeability reservoirs. |
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| Keywords: | Oil vein swarm abnormal overpressure oil migratiH |
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