摘要
盖层作为天然气藏的重要组成部分,不仅控制着天然气在空间上的分布,而且控制着天然气的富集。此前关于深层天然气盖层的研究主要侧重于对区域性泥岩盖层,但长岭断陷深层天然气除了被泥岩封盖外,还有一部分被火山岩自身封盖,火山岩盖层还没有被全面系统地认识。前人对长岭断陷天然气藏封盖保存条件的研究工作开展的甚少。本研究通过对该盖层类型及分布特征、微观封闭能力以及封盖能力综合评价及研究,探讨长岭断陷深层盖层发育特征及对天然气空间分布与富集的控制关系。
The practice of gas exploration shows that cap-rock, as an important component of natural gas reservoir, is in control of not only the distribution of natural gas in space, but also the accumulation of natural gas. The previous research on deep natural gas cap-rock is mainly focused on the analysis of the regional mudstone cap-rock, but Changling rift deep natural gas is capped by not only mudstone capping, but also volcanic rock which has not been systematically understanding. Lacking in previous research work on the Changling fault depression gas sealing preservation conditions of development, this paper has a discussion on the Changling fault depression deep reservoir characteristics and its control over the relationship between spatial distribution and enrichment of natural gas from the aspects of types and distribution of the cover, as well as comprehensive evaluation of micro sealing capacity and sealing capacity.
作者
黄兰
HUANG Lan(Research Institute of Exploration and Development,Northeast Division,SINOPEC Group,Changchun 130062)
出处
《四川地质学报》
2018年第2期231-235,共5页
Acta Geologica Sichuan
关键词
天然气
火山岩盖层
泥岩盖层
长岭断陷
Changling depression
deep gas
cap-volcanic rock
cap-mudstone
