| 松辽盆地东南隆起区下白垩统层序地层格架及油气成藏规律 |
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| 引用本文： | 叶德燎.松辽盆地东南隆起区下白垩统层序地层格架及油气成藏规律[J].地质科学,2005,40(2):227-236. |
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| 作者姓名： | 叶德燎 |
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| 作者单位： | 中国石油化工股份有限公司无锡实验地质研究所,江苏,无锡,214151 |
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| 摘 要： | 松辽盆地东南隆起区具有典型的下断上坳沉积特征,区内Tg--T2反射界面之间自下而上可以划分为5个层序,层序Ⅰ大体相当于火石岭组,层序Ⅱ大体相当于沙河子组,层序Ⅲ大体相当于营城组,层序Ⅳ大体相当于登娄库组,层序Ⅴ大体相当于泉头组。烃源岩主要为层序Ⅱ“水进体系域和高水位体系域”的半深湖相泥岩,主要目的(储集)层为层序Ⅴ低水位体系域的辫状河道砂体。生、储、盖、圈、运和保在时空上的有机组合,使松辽盆地东南隆起区的农安--德惠地区的油气聚集南北成带,东西分隔有别,西部形成了断背、背斜型有利油气成藏带,中部形成了断块、断鼻型较有利油气成藏带。
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| 关 键 词： | 层序地层格架 下白垩统 油气藏 农安-德惠地区 松辽盆地 |
| 文章编号： | 0563-5020(2005)02-0227-10 |
| 收稿时间： | 2004-02-11 |
| 修稿时间： | 2004年2月11日 |
LOWER CRETACEOUS SEQUENCE STRATIGRAPHIC FRAMEWORK AND HYDROCARBON ACCUMULATION IN THE SOUTHEAST RISE, SONGLIAO BASIN, CHINA |
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| Ye Deliao.LOWER CRETACEOUS SEQUENCE STRATIGRAPHIC FRAMEWORK AND HYDROCARBON ACCUMULATION IN THE SOUTHEAST RISE, SONGLIAO BASIN, CHINA[J].Chinese Journal of Geology,2005,40(2):227-236. |
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| Authors: | Ye Deliao |
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| Institution: | Wuxi Research Institute of Experimental Petroleum Geology, China Petroleum & Chemical Corp., Wuxi, Jiangsu 214151 |
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| Abstract: | The Southeast Rise, a sub-order tectonic unit of the Songliao Basin, was a typical sedimentary area with a fault depression in earlier stage and a depression in later stage. Five sequences could be distinguished based on reflection boundaries of Tg——T2. The sequence Ⅰ was correspondent to the Early Cretaceous Huoshiling Formation, sequence Ⅱ to the Shahezi Formation, sequence Ⅲ to the Yingcheng Formation, sequence Ⅳ to the Denglouku Formation and sequence V to the Quantuo Formation, respectively. The source rocks consisted of mudstones with semi-deep lacustrine facies, developed in “TST+HST” of sequence Ⅱ. The main reservoirs were braided fluvial sandbody developed in LST of sequence Ⅴ. There was an obvious zonation for hydrocarbon accumulations in the south and north as a result of combination of hydrocarbon generation, accumulation, entrapment and preservation. Anticline oil reservoirs were mainly developed in the west, and fault block ones were in the central part, respectively, in Nongan-Dehui area. |
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| Keywords: | Sequence stratigraphic framework The Lower Cretaceous Hydrocarbon accumulation Nong'an-Dehui area The Songliao Basin |
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