广西十万大山盆地早三叠世深水碳酸盐岩的沉积作用及油气潜力

SEDIMENTATION AND HYDROCARBON POTENTIAL OF EARLY TRIASSIC CARBONATE ROCKS OF SHIWAN DASHAN BASIN IN GUANGXI

曾辉

Zeng Hui

石油工业部广西石油勘探开发指挥部

Headquarters for Petroleum Exploration and Development of Guangxi, Ministry of Petroleum Industry

油气聚集与沉积相带密切相关,随着油气勘探发展的需要,碳酸盐岩沉积相的研究,已由浅水环境转向深水环境。美国、墨西哥、中东和北海的深水碳酸盐岩中,已证实有丰富的石油和天然气资源。而碳酸盐岩重力流储层已成为油气勘探一个新的领域。墨西哥的波查里卡油田塔马布拉灰岩产出石油现已超过9亿桶就是最好例证。

It is reported that marine deep-water carbonate rock rich in hydrocarbon resources can be assigned to the transitional facies between continental slope and deep sea basin.Nevertheless,this paper argues that the example given here is an exception.Tectonic background,sedimentation,sedimento-structural feature of the deep-water carbonate rock facies of the platform fault-scarp slope are studied.An attempt to classify breccia of this facies is made and the depo-sitional models of the slope are establ ished.Assessment of its hydrocarbon potential shows bright oil and gas prospects of deep-water carbonate rock on the fault-scarp slope of early Triassic platform in the Shiwan Dashan Basin in Guangxi.

https://doi.org/10.11781/sysydz198402095