贵州紫云地区打屋坝组成藏条件研究及有利区优选

doi:10.19388/j.zgdzdc.2022.03.02

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Abstract The southern part of Guizhou Province is the concentration of Upper Paleozoic Carboniferous shales in southern China, where has undergone complex tectonic evolution and petrographic paleogeographic changes. Therefore, the inhomogeneous shale system of the Dawuba Formation is developed. As a typical representative of Ziyun area in southern Guizhou Province, the development of shales in Dawuba Formation varies from region to region. In this paper, the authors studied distribution and reservoir formation conditions of the Dawuba Formation from perspectives of regional tectonic development, formation lithology combination, formation thickness and burial depth, organic geochemical characteristics, shale reservoir physical properties and gas-bearing properties through well CY1, well DY1, and the surrounding outcrops in Luogang Manchang, Sidazhai, and Getuhe area. The results show that Ziyun area was deposited in the slope-pelagic phase at the edge of Early Carboniferous, and the water body gradually becomes deeper from north to south. And the organic-rich shales are concentrated in the I and III section of Dawuba Formation with favorable static indicators of each section, while the drilling wells in this area show good gas content. Through comprehensive comparison and evaluation, two favorable shale gas zones of Zongdi and Shangyuan in Ziyun area were selected, providing next direction for shale gas exploration in this area.

Key words： Ziyun area Carboniferous Dawuba Formation reservoir formation conditions favorable zone

Received: 01 February 2021

ZTFLH:	P618.13
	TE132.2

Fund:中国地质调查局 “桂中—南盘江页岩气地质调查(编号: DD20190088)”项目资助

Corresponding Authors: 方欣欣(1981—),女,副研究员,主要从事油气储层评价方面研究。Email: freestarxin@163.com。

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	YUAN Kun
	FANG Xinxin
	WANG Ting
	CHEN Rong
	WANG Chao
	LIN Tuo
	LU Shufan
	LUO Xiangjian

Cite this article:

YUAN Kun,FANG Xinxin,WANG Ting, et al. Study of reservoir formation conditions and favorable zones selection of the Dawuba Formation in the Ziyun area of Guizhou Province[J]. , 2022, 9(3): 11-12.

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http://journal25.magtechjournal.com/Jwk_dzdc/EN/10.19388/j.zgdzdc.2022.03.02 OR http://journal25.magtechjournal.com/Jwk_dzdc/EN/Y2022/V9/I3/11

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