Forming Factors and Evolution of Devonian Bioherm Paleo-Oil-Reservoir in Dachang Anticline, Guizhong Depression
The Devonian bioberm paleo-oil-reservoir in Dachang anticline accumulates in bioclastic limestone of Donglinggang Formation on Dachang anticline, Guizhong depression, Guangxi. Its length if 3.6 km, width is 2.7 km, thickness is 873 m, and the bioherm consists of reef-front, reef-core, reef-flat, reef-behind. The oil source of Middle Devonian paleo-oil-reservoir comes from Middle Devonian mudstone of Luofu Formation which formed the same time of reservoir but different facies. Pore of the reservoir mainly is secondary pore, a few primary intergranular pore. The trap of Dachang anticline formed on late Hercynian and peak generation of oil was from late Hercynian to early Indosinian. The paleo-oil-reservoir formed initially late Hercynian, then it was buried and lifted two times on Indosinian and Yanshanina. At last, it was exposed directly to the earth surface by Himalayan event and formed bitumen ore of today.
Guizhong depression Devonian bioberm paleo-oil-reservoirs bitumen ore forming factors evolution.
Shan Xuanlong Liu Wanzhu Liang Yihong
College of the Earth Science, Jilin University, Changchun J 30061, China
国际会议
The IPACES 6th Annual Meeting(“现代地球科学，交流与合作国际学术研讨会暨第六届IPACES学术年会)
武汉
英文
518-521
2007-04-25（万方平台首次上网日期，不代表论文的发表时间）