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四川盆地二三叠系礁滩相储层沉积演化特征

Natural Gas Technology and Economy(2011)

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Abstract
四川盆地中西部二叠系—三叠系礁滩相储层具有广阔的勘探前景。通过大量钻井及地震层序划分对比,分析礁滩相储层赋存规律及层序发育特征,采用"优势相"编图方法,探讨礁滩相储层沉积演化规律。研究表明,四川盆地二、三叠礁滩相储层主要形成于海西晚期—印支早期构造旋回,为一个巨层序序列,处于裂陷盆地阶段;沉积演化经历盆地由西高东低转变为西低东高的格局,发生明显的翘倾;沉积体系经历了开阔台地—蒸发台地的转变。
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Key words
Tertiary,Sichuan Basin,sequence,Permian,evolution,bioreef-shoal,sedimentary model
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