石油物探2012，Vol.51Issue(3)：296-303,8.DOI:10.3969/j.issn.1000-1441.2012.03.014
中非Muglad盆地1/2/4区块白垩系构造特征与油气分布
Structural characteristics and hydrocarbon distribution of Cretaceous at 1/2/4 blocks in Muglad Basin, Central Africa
贾义蓉 1方乐华 2李碧宁 2史忠生 2苏玉平2
作者信息
- 1. 成都理工大学信息工程学院,四川成都610059
- 2. 中国石油天然气股份有限公司勘探开发研究院西北分院,甘肃兰州730020
- 折叠
摘要
Abstract
Muglad Basin formed by a number of rift sags domained by mesozoic sendiment, the sags are relatively independent with separate tectonic systems and sedimentary systems. After seismic horizons interpretation and structure evolution profile mapping at many structural strata at 1/2/4 blocks in Muglad Basin, we analyzed the relationship among structural evolution characteristics, faults features and hydrocarbon accumulation. There are five major contemporaneous faults along NW direction and two boundary faults along NNW direction in the eastern of the study area. The frame of the 1/2/4 blocks structure is controlled by the two groups of faults, and the Cretaceous depressions and uplifts were featured by inheritance. The structural belt is controlled by NNW faults in the east, and controlled by NW faults in the west. The eastern and western structural belts are easily distinguished. The two structural are characterized by the tectonic framework of "one uplift, two sub-depression and two slopes'* and have different hydrocarbon accumulation zones in northern and southern. Hydrocarbon is mainly distributed at Abu GabraCAG) group, Bentiu and Aradeiba group in the northern and at Bentiu &- Aradeiba group in the southern. The different hydrocarbon abundance of both sides of the Kaikang depressed was due to the difference basin structrue and tectonic evolution between the east side and the west one.关键词
Muglad盆地/1/2/4区块/断裂特征/构造分析/油气分布Key words
Muglad Basin/ 1/2/4 blocks/ fault characteristics/
structure analysis/ hydrocarbon distribution分类
天文与地球科学引用本文复制引用
贾义蓉,方乐华,李碧宁,史忠生,苏玉平..中非Muglad盆地1/2/4区块白垩系构造特征与油气分布[J].石油物探,2012,51(3):296-303,8.
