柴北缘N1井储层的源控成岩演化与钙质夹层成因
柴北缘N1井储层的源控成岩演化与钙质夹层成因
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二氧化碳捕集与封存技术国家地方联合工程研究中心,陕西西安710069
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Scope and Contents
Contents
TE122.2; 以柴达木盆地北缘N1井为例,通过镜下观察和地化分析,探讨埋藏成岩阶段一类钙质夹层的形成过程.结果表明:N1井储层中的钙质夹层被两期烃源岩热降解成因方解石胶结(Ca1,Ca2),含少量沥青浸染高岭石;相邻高孔渗层溶蚀作用强烈,可见残余方解石、高岭石和两期沥青(Hy1,Hy2);钙质夹层非方解石直接沉淀而成,而是在烃源岩两期生排烃控制下储层成岩演化(高岭石—Hy1—Ca1—溶蚀、高岭石—Hy2—Ca2)的结果,即早期溶蚀成因Ca1型和晚期Ca2型钙质夹层的叠加.
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Full title
柴北缘N1井储层的源控成岩演化与钙质夹层成因
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Record Identifier
TN_cdi_wanfang_journals_sydxxb201805002
Permalink
https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_sydxxb201805002
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ISSN
1673-5005
DOI
10.3969/j.issn.1673-5005.2018.05.001
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