[1]刘华,李振升,蒋有录,等.渤海湾盆地潍北凹陷油气分布不均一性及主控因素[J].新疆石油地质,2016,(03):262.[doi:10.7657/XJPG20160303]
 LIU Hua,LI Zhensheng,JIANG Youlu,et al.Heterogeneity and Main Controlling Factors of Hydrocarbon Distribution in Weibei Sag,Bohai Bay Basin[J].Xinjiang Petroleum Geology,2016,(03):262.[doi:10.7657/XJPG20160303]
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渤海湾盆地潍北凹陷油气分布不均一性及主控因素()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2016年03期
页码:
262
栏目:
出版日期:
2016-06-01

文章信息/Info

Title:
Heterogeneity and Main Controlling Factors of Hydrocarbon Distribution in Weibei Sag,Bohai Bay Basin
文章编号:
1001-3873(2016)03-0262-08
作者:
刘华1李振升1蒋有录1徐昊清2陈柯童1王鑫1
(1.中国石油大学 地球科学与技术学院,山东 青岛 266580; 2.中国石化 胜利油田分公司 勘探开发研究院,山东 东营 257001)
Author(s):
LIU Hua1 LI Zhensheng1 JIANG Youlu1 XU Haoqing2 CHEN Ketong1 WANG Xin1
(1.School of Geosciences, China University of Petroleum,Qingdao, Shandong 266580,China;2.Research Institute of Exploration and Development, Shengli Oilfield Company,Sinopec, Dongying, Shandong 257001,China)
关键词:
渤海湾盆地潍北凹陷孔店组成藏模式油源对比油气运移油气分布
Keywords:
Bohai Bay basin Weibei sag Kongdian formation accumulation mode oilsource correlation hydrocarbon migration hydrocarbon distribution
分类号:
TE112.1
DOI:
10.7657/XJPG20160303
文献标志码:
A
摘要:
为正确认识渤海湾盆地潍北凹陷油气分布极不均匀、东富西贫的特点及其主控因素,在烃源岩、成藏期分析和油源对比的基础上,剖析了油气运移过程与成藏模式。结果表明,潍北凹陷已发现油气主要富集于始新统孔店组,东部和西部地区油气成藏模式及主控因素存在明显差异:东部地区油气多来源于北部洼陷带近东部发育的孔二段中亚段和上亚段烃源岩,以沙四段—东营组沉积期成藏为主,构造运动导致油气呈现出由北向南阶梯状抬升运移的趋势,微构造脊是油气运移的优势通道,具有“双向输导-侧向运移”的运聚模式,成藏期构造活动适中、保存条件良好是油气得以富集的关键;西部地区的油气多来源于北部洼陷带的孔二段中亚段和下亚段烃源岩,存在沙四段—东营组沉积期、明化镇组沉积晚期的两次生烃,具有“两期成藏-近源聚集”的成藏模式,埋深大、储集层致密是油气成藏的主要特色,寻找围绕二次生烃中心的近源深层气藏,是西部地区油气勘探的重点。
Abstract:
In order to correctly understand the features of extremely heterogeneous hydrocarbon distribution and rich in the east and poor in the west and the controlling factors in Weibei sag of the Bohai Bay basin, this paper analyzes the hydrocarbon migration process and accumulation pattern on the basis of source rock and accumulation period analysis and oil?source rock correlation. The result shows that the oil and gas mainly accumulate in the Eocence Kongdian formation in this sag, and there are significant differences on hydrocarbon accumulation and main controlling factors in the east and in the west: the oil and gas in the east mainly came from the sources rocks of the middle and upper sub?member of Ek developed in nearly eastern part of the northern sub?sag belt, and accumulated during Es4 to Ed depositional period. Tectonic movements resulted in the steplike, uplifting migration of hydrocarbons from the north to the south. Microstructural ridges acted as the predominant pathways for oil and gas migration with a migration and accumulation mode of“bidirection conduction?lateral migration”. The key to good hydrocarbon accumulation is moderate structural movement during entrapment and good preservation; the oil and gas in the west mainly came from the sources rocks of the middle and lower sub?member of Ek in this sub?sag which suffered from 2 times of hydrocarbon generation during Es4 to Ed depositional period and late depositional period of Minghuazhen formation, respectively. Its accumulation is featured with the“entrapped during 2 different periods?the accumulated near source rocks”, large burial depth and tight reservoir. Deep?burial near?source gas reservoirs around the secondary hydrocarbon?generation center are the targets for oil and gas exploration in the western areas

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更新日期/Last Update: 2016-05-24