| 苏北盆地阜三段油气成藏规律 |
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| 引用本文： | 周荔青,刘池洋,陆黄生,张淮.苏北盆地阜三段油气成藏规律[J].石油实验地质,2004,26(2):187-193. |
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| 作者姓名： | 周荔青 刘池洋 陆黄生 张淮 |
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| 作者单位： | 1.西北大学, 地质系, 陕西, 西安, 710069 |
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| 摘 要： | 阜三段成油气组合是苏北盆地近年增储上产的主要目的层系.该盆地阜二段中下部半咸水相优质烃源岩是阜三段成藏的主力烃源岩,有利储层则位于阜三段上砂组及阜三段下砂组的上部,与阜二段中下部烃源岩之间夹着厚层生烃能力极差的湖相泥岩,使其生储盖配套性较差,必须依靠断层沟通.受此控制,阜三段油气成藏具明显部位性,主要发育于继承性鼻状隆起带及同生断裂或大型晚期断裂附近.有利的构造格式类型、沉积体系与构造格局、圈闭体的有机配置则是形成阜三段油气藏的必备要素.阜三段油气成藏模式表明,在生储配置不利的区块,应重点围绕继承性隆起带及同生断层或大型晚期断层开展油气勘探.
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| 关 键 词： | 油气 成藏规律 阜三段 苏北盆地 |
| 文章编号： | 1001-6112(2004)02-0187-07 |
| 收稿时间： | 2004-01-01 |
| 修稿时间： | 2004年1月1日 |
POOL-FORMING RULES OF OIL AND GAS IN THE THIRD MEMBER OF THE FUNING FORMATION, THE NORTH JIANGSU BASIN |
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| ZHOU Li-qing.POOL-FORMING RULES OF OIL AND GAS IN THE THIRD MEMBER OF THE FUNING FORMATION, THE NORTH JIANGSU BASIN[J].Petroleum Geology & Experiment,2004,26(2):187-193. |
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| Authors: | ZHOU Li-qing |
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| Affiliation: | 1.Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China2. East China Subsidiary Company, SINOPEC, Nanjing, Jiangsu 210011, China |
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| Abstract: | The oil and gas assemblage in the third member of the Funing Formation(Ef~3), the North Jiangsu Basin is a main target stratum of progressive increasing in proven oil reserves and output recently. The good-quality brackish-water-facies source rocks formed in the middle-lower part of the Fu-2 Member (Ef~2) of the basin is the principal source rocks of Ef~3 oil pools. The favorable reservoirs lie in the upper parts of upper and lower Ef~3 sandstone, and thick layers of lake-facies mudstone with poor hydrocarbon-generating ability lie between the reservoirs and the middle-lower part of Ef~3 source rocks. Therefore, the association of source rocks, reservoirs and caprocks becomes worse, and need to be linked up by faults so as to form good oil pools. Oil pools of Ef~3 appear in definite locations. They are mainly formed nearby inherited nose uprift belts and contemporaneous faults or large late-stage faults. Favorable structural types and organic matching of sedimentary systems, tectonic frameworks and trap bodies are necessary elements to form the oil and gas pools of Ef~3. The pool-forming model of oil and gas in Ef~3 showed that the main objects of oil and gas exploration should be focused on inherited uplift belts and contemporaneous faults or large late-stage faults in the districts with unfavorable source rock-reservoir-caprock matching. |
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| Keywords: | oil and gas pool-forming rule the third member of the Funing Formation the North Jiangsu Basin |
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