金衢盆地上白垩统金华组湖相页岩油气地质特征

doi:10.19388/j.zgdzdc.2017.06.02

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Abstract This paper took the Jinhua Formation of Cretaceous in Jinqu Basin as the research object. According to the regional sedimentary background and the drilling data, the authors analyzed the organic matter abundance, thickness and distribution of dark shales, and studied the geological characteristics of lacustrine shale oil and gas of Jinhua Formation in Upper Cretaceous in Jinqu Basin. The organic matter abundance shows that TOC value is commonly less than 0.5%, belonging to non-source rocks. While the value of a few samples reaches 1.57%, belonging to quality source rocks. The organic-rich layers are mainly sand-rich and mud interbed or mud-rich and sand interbed, and they are multiple productive targets. The northern sag of the basin has a certain exploration potential of shale oil and gas. The dark lacustrine shales in Jinhua Formation are mainly developed in the northwestern Quzhou-Longyou depositional center areas. The developed areas are limited and thickness of shales is 5-100 m. The average porosity of shales is 3.867%, and the average maximum permeability is 0.087 2×10^-3μm², showing that the shales are a typical tight reservoir. The organic-rich layers are taken as a whole for shale oil and gas exploration. And it is an important direction for future terrestrial shale oil and gas exploration that the oil source rocks are the reservoir.

Key words： shale oil and gas lacustrine facies geological characteristics Jinhua Formation Jinqu Basin tight reservoir

Received: 10 April 2017

ZTFLH:	TE132.2
	P618.13

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	Articles by authors
	XU Zhenyu
	FANG Chaogang
	TENG Long
	WANG Lingyu

Cite this article:

XU Zhenyu,FANG Chaogang,TENG Long, et al. Geological characteristics of lacustrine shale oil and gas of Jinhua Formation in Upper Cretaceous in Jinqu Basin[J]. , 2017, 4(6): 9-14.

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http://www.zgdzdcbjb.com/EN/10.19388/j.zgdzdc.2017.06.02 OR http://www.zgdzdcbjb.com/EN/Y2017/V4/I6/9

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