摘要
渝东及邻区盆山耦合演化分为弱造山与克拉通盆地、强造山与周缘前陆盆地、造山后与残余盆地和非造山与断陷 (裂谷 )盆地四个发育世代 ,不同的盆—山关系阶段具备不同的构造、沉积和油气 (藏 )形成演化特征。志留系烃源岩有两次主要的成烃时期 ,分别受控于海西晚期克拉通“活化”沉降期、印支期—早燕山期前陆盆地快速沉降期 ,其中海西晚期为生油高峰期、印支—早燕山期为生烃高峰期。石炭系油气成藏经历了海西晚期地层圈闭控油阶段、印支期—早燕山期前陆古隆起控油气阶段、晚燕山—喜山期局部构造圈闭控气阶段 ,油气运移聚集方向发生多次叠加、汇聚和调整。盆缘强造山相关的古构造和盆内造山相关的局部构造活动是石炭系油气成藏最重要控制因素。
The basin-mountain coupling evolution in East Chongqing and its adjacent regions may be divided into four development generations,i.e.weak orogeny-craton basin,strong orogeny-peripheral foreland basin,post-orogeng-residual basin and non-orogeny-faulted (rifted) basin and the different basin-mountain stages are of the distinct characteristics of tectonic structure,sedimentation and hydrocarbon (reservoir) formation and evolution.The Silurian hydrocarbon source rocks had two principal hydrocarbon-forming periods,i.e.the 'activatedly' settling period of Late Hercynian craton and the rapidly settling period of Indosinian-Early Yanshan foreland basin.The former was the peak oil generation time;and the latter was the peak hydrocarbon generation time.The oil and gas reservoir formation in Carboniferous had undergone the oil-controlled stage of Late hercynian stratigraphic traps,the oil-and gas-controlled stage of Indosinian-Early Yanshan foreland paleouplift and the gas-controlled stage of Late Yanshan-Himalayan local structural traps and the multiple superposition,collection and adjustment had happened in oil and gas migration and accumulation.The paleotectonic activity related to basin-peripheral strong orogeny and the local structural activity relevant to intra-basinal orogeny are the most important control factors of oil and gas reservoirs formation in Carboniferous.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2003年第z1期38-42,共5页
Natural Gas Industry
基金
中国石油勘探与生产分公司 2 0 0 2年科技项目<四川盆地油气地质综合评价及预探区带优选>(0 2 0 12 5 )子课题<渝东地区石炭系天然气地质综合评价和区带优选>(0 2 0 12 5 - 4 )的部分成果
关键词
渝东及邻区
盆山耦合
克拉通盆地
前陆盆地
成烃期
油气成藏和演化
Chongqing, East,Adjacent region, Basin-mountain coupling, Craton basin, Foreland basin, Hydrocarbon-forming period, Oil and gas reservoiring and evolution
作者简介
卢文忠,1965年生,高级工程师;1992年毕业于原成都理工学院,获硕士学位,现从事油气综合评价研究工作.地址:(310023)浙江省杭州市西溪路920号.电话:(0571)85224932.
