2016年2期

湖北宜昌地区中寒武统天河板组沉积相及其油气意义

发布时间:2016-09-05阅读次数:

【期数】2016-2

【作者】曾雄伟,王传尚,刘安,危凯

【机构】中国地质调查局武汉地质调查中心,武汉 430205

【关键词】凤凰坪剖面;天河板组;角砾状灰岩;宜地2井;天然气

【中文摘要】通过湖北宜昌凤凰坪剖面露头沉积相分析,本文认为天河板组对应2个海进-海退序列,两者被天河板组底部的角砾状灰岩所分隔。结合宜地2井岩芯观察,认为天河板组天然气藏的形成与古岩溶储层有关;并简要阐述了天然气的成藏机理。

【英文摘要】Based on outcrop sedimentary facies analysis of Fenghuangping Section, Yichang, Hubei, this paper argues that the Tianheban Formation correspond to two transgressive-regressive sequences, which are separated by the brecciated limestone at the bottom of the Tianheban Formation. According to the YD-2 well cores, it is considered that the natural gas accumulation of the Tianheban Formation in YD-2 well is related to the palaeokarst reservoir. The origin mechanism of the YD-2 well natural gas is also briefly described.

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