摘要
通过地质条件与地球化学综合分析,从页岩沉积环境、生烃条件、储集条件及保存条件等方面进行研究,认为下寒武统牛蹄塘组页岩具备较好的页岩气成藏条件,深水陆棚相是页岩气发育的最有利相带。页岩厚度和有机碳含量是影响黔北地区页岩气藏形成的主要因素,并据此进行有利区优选,划定出石阡-瓮安有利区和酉阳-思南有利区。
With the integrate analysis of the geochemical and geological condition, the sedimentary environment, gas-generation condition, reservoir quality and preservation condition of Niutitang hlack shale of lower Cambrian have been studied. Niutitang formation shale has a favorable condition of shale-gas reservoir, and the deep-water shelf facie is the best sedimentary facie for shale gas accumulation. The major factors causing different accumulation condition are thickness and TOC, and two shale gas favorable areas, Shiqian-Weng＇an and Youyang-Sinan, had be optimized based on these two factors.
出处
《煤炭技术》
CAS
北大核心
2016年第10期114-116,共3页
Coal Technology
基金
国家科技重大专项课题(2011ZX05018-002)
关键词
牛蹄塘组
页岩气
黔北
成藏条件
有利区
Niutitang formation
shale gas
Qianbei area
reservoir torming condition
target optimization
