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中国南方膏盐岩分布特征
引用本文:金之钧,龙胜祥,周雁,沃玉进,肖开华,杨志强,殷进垠.中国南方膏盐岩分布特征[J].石油与天然气地质,2006,27(5):571-583,593.
作者姓名:金之钧  龙胜祥  周雁  沃玉进  肖开华  杨志强  殷进垠
作者单位:中国石油化工股份有限公司,石油勘探开发研究院,北京,100083
基金项目:国家重点基础研究发展计划(973计划)
摘    要:全球膏盐岩盖层虽然所占比例较小,但封盖了大多数已发现油气储量,并且是许多大型、特大型油气田的主要盖层,对油气聚集与保存具有重要意义。中-下三叠统膏盐岩盖层与四川盆地天然气分布的密切关系也表明,膏盐岩分布特征研究是认识、评价中国南方天然气保存条件不可忽视的重要因素之一。膏盐岩主要形成于盆地发展演化的中、后期。在中国南方,膏盐岩盖层主要发育于中-下寒武统、石炭系、中-下三叠统及白垩系—古近系,但分布不均,其封盖作用的重要性差异很大。受沉积、构造环境及后期破坏作用的影响,中-下寒武统膏盐岩主要分布在四川盆地东、南部及黔西北地区;石炭系膏盐岩盖层主要分布在湘中区;白垩系—古近系膏盐岩盖层主要发育于江汉盆地。中-下三叠统膏盐岩厚度最大、分布最广,对区内天然气的封盖作用最为重要,对四川盆地、黔北区、楚雄盆地及中、下扬子部分地区的天然气都起到重要的封盖作用。

关 键 词:保存条件  膏盐岩  海相沉积  油气成藏  中国南方
文章编号:0253-9985(2006)05-0571-13
收稿时间:2006-09-13
修稿时间:2006-09-13

A study on the distribution of saline-deposit in southern China
Jin Zhijun,Long Shengxiang,Zhou Yan,Wo Yujin,Xiao Kaihua,Yang Zhiqiang,Yin Jinyin.A study on the distribution of saline-deposit in southern China[J].Oil & Gas Geology,2006,27(5):571-583,593.
Authors:Jin Zhijun  Long Shengxiang  Zhou Yan  Wo Yujin  Xiao Kaihua  Yang Zhiqiang  Yin Jinyin
Affiliation:Petroleum Exploration and Production Research Institute ,SINOPEC ,Bering 100083
Abstract:Although accounting for a small proportion of the cap rocks all over the world, the saline deposit is of vital importance for accumulation and preservation of hydrocarbons, for it serves as seal to most of the discovered hydrocarbon reserves and is also the major cap rock in many huge and giant oil and gas fields. The close relationship between the Middle - Lower Triassic saline deposit cap rock and the distribution of natural gas in Sichuan basin suggests that distribution of saline deposit is crucial to the understanding and evaluation of the gas preserve conditions in southern China. Saline deposit forms mostly during the middle and late stages of basin development. In southern China, saline deposit cap rock are mainly developed in Middle -Lower Cambrian, Carboniferous, Middle - Lower Triassic, and Cretaceous-Paleogene, but they are unevenly distributed and have different sealing importance. Under the influence of deposition, tectonic settings, and late destruction, the salinedeposit rock of Middle - Lower Cambrian mainly distribute in the eastern and southern parts of Sichuan basin and the northwestern part of Guizhou province; the Carboniferous saline deposit mainly distributed in the central of Hunan province, and the Cretaceous-Paleogene saline deposit mainly occurs in Jianghan basin. The Middle - Lower Triassic Saline-deposit, with the widest distribution and the biggest thickness, plays an important role in the sealing of natural gas in Sichuan basin, northern Guizhou Province, Chuxiong basin, and parts of the Middie-Lower Yangtze.
Keywords:preserve condition  saline-deposit  marine deposit  hydrocarbon reservoiring  southern China
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