应用层序地层学方法恢复加里东期古地貌——以济阳坳陷沾化地区为例

宋国奇; 徐春华; 樊庆真; 魏艳萍; 孔凡顺

doi:10.11781/sysydz200004350

应用层序地层学方法恢复加里东期古地貌——以济阳坳陷沾化地区为例

doi: 10.11781/sysydz200004350

1.
胜利石油管理局地质科学研究院, 山东东营257015
2. 中科院地质与地球物理研究所, 北京100101
3. 中国地质大学武汉研究生院, 湖北武汉430074
4. 胜利石油管理局地质科学研究院, 山东东营257015

详细信息

作者简介:
宋国奇(1958- ),男(汉族),山东高密人,高级工程师、总地质师,主要从事地震地质方面的研究工作.

中图分类号: TE121.3
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出版历程
- 收稿日期: 2000-06-26
- 刊出日期: 2000-10-25

PROSPECTS FOR MEDIUM-DEEP NATURAL GAS EXPLORATION FIELD IN WEST SICHUAN AREA

1.
Research Institute of Geoscience, Shengli Bureau of Petroleum Administration, Dongying, Shandong 257015, China
2. Research Institute of Coal Investigation, Shandong Coalfield Exploration Company, Tai'an, Shandong 271000, China
3. Research Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China
4. Wuhan Graduate School, China University of Geosciences, Wuhan, Hubei 430074, China

摘要

摘要: 加里东期风化壳发育的程度直接影响了相关储层的发育,而古地貌对次生孔隙的发育起决定作用。针对加里东期古风化面的重要性,文中把古地貌分为岩溶高地、岩溶斜坡和岩溶洼地3个古地貌单元,并分析了原有古地貌恢复方法(残余厚度法、标准法等)存在的4个缺点,在此基础上提出了以具有等时性的区域性不整合面为核心内容的层序地层学恢复古地貌方法。作者应用该方法对济阳坳陷沾化地区加里东期古地貌进行了恢复,并分析了该地区处于岩溶高地的991潜山和处于岩溶洼地的孤岛潜山两个不同古地貌单元的岩溶发育特征。结果表明,层序地层学方法能准确地恢复加里东期古地貌,进而能准确地预测次生孔隙发育带,并最终指导与岩溶有关的油气勘探。
- 层序地层学 /
- 古生代 /
- 岩溶 /
- 古地貌恢复 /
- 油气勘探
Abstract: The developed degree of the Caledonian weathering crust directly affects the developing of related reservoirs, and paleogeomorphology palys a decisive part in the development of secondary pores. In view of the importance of the Caledonian fossil weathering plane, the paleogeomorphology is divided into karst highland, karst slope and karst depression three paleogeomorphological units in this paper, and four shortcomings existing in the former paleogeomorphological restorstion methods such as the residual thickness method, the standard method, etc. are analysed. On this basis, the sequence stratigraphy method to restore paleogeomorphology whose kernel content is regional unconformable planes with isochroneity is suggested. The authors use this method to restore the Caledonian paleogeomorphology of Zhanhua area in the Jiyang Depression and analyse the karst development features of two different paleogeomorphological units in this area, 991 Buried Hill in karst highland and Gudao Buried Hill in karst depression. Results show that the sequence stratigraphy method can accurately restore the Caledonian paleogeomorphology and predict the developed zones of secondary pores, and at last direct hydrocarbon exploration related to karst.
- sequence stratigraphy /
- the Paleozoic /
- karst /
- the restoration of paleogeomorphology /
- hydrocarbon exploration

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参考文献(11)

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