Characteristics of strike-slip structure and rules of hydrocarbon accumulation in northern Liaodong Bay
Fan Junxia1,2, Li Hongwei2, Zhu Xiaomin3, Tian Shicheng1
1 China University of Geosciences (Beijing), Beijing 100083; 2 Research Institute of Exploration m Development, PetroChina , Beijing 100083; 3 China University of Petroleum (Beijing),Beijing 102249
Abstract The dextral strike-slip structure styles were typically developed in the northern Liaodong Bay. The characteristics are as follows: echelon faults are developed along the strike-slip fault zone, flower structures can be seen in the sections, strike-slip faults are distributed as S-shape and fault troughs and fault noses are alternately distributed along the strike-slip fault zone. Studies show that the dextral strike-slip structures were controlled by the stress field of south north extension and west east compression in which the fault troughs and the fault noses were alternatively distributed due to the changes of the local stress field along the strike-slip fault zone. The stress concentration and the strata compression occurred at the S-shaped constraining bends, while the stress relaxation and strata extension happened at the anti-S-shaped releasing bends. Therefore, the fault noses are generally formed near the constraining bends while the fault troughs near the releasing bands of strike slip structures. Hydrocarbon migrated from fault troughs to fault noses and petroleum were finally accumulated along the constraining bends. It is significant to study the characters of the strike-slip structures for trap prediction and prediction of rules of hydrocarbon accumulation along the strike-slip fault zone.
About author: Fan Junxia, born in 1970, is a senior engineer and a candidate for doctoral degree in China University of Geosciences (Beijing). She is mainly engaged in structure analysis
Cite this article:
Fan Junxia,Li Hongwei,Zhu Xiaomin et al. Characteristics of strike-slip structure and rules of hydrocarbon accumulation in northern Liaodong Bay[J]. JOPC, 2006, 8(3): 415-418.
Fan Junxia,Li Hongwei,Zhu Xiaomin et al. Characteristics of strike-slip structure and rules of hydrocarbon accumulation in northern Liaodong Bay[J]. JOPC, 2006, 8(3): 415-418.
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