| 南阳凹陷下第三系核桃园组砂岩中碳酸盐胶结物及其成因的初步探讨 |
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| 引用本文： | 姚光庆,李蕙生.南阳凹陷下第三系核桃园组砂岩中碳酸盐胶结物及其成因的初步探讨[J].地球科学,1991(5). |
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| 作者姓名： | 姚光庆 李蕙生 |
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| 作者单位： | 中国地质大学石油系
(姚光庆)，中国地质大学石油系(李蕙生) |
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| 摘 要： | 本文主要阐述了南阳凹陷核桃园组砂岩中碳酸盐胶结物的矿物成份、产状及分布特征.研究表明,核桃园组中碳酸盐胶结物的成分、含量和分布明显受沉积相和成岩作用的控制.碳酸盐胶结物的形成是砂泥岩系统相互作用的结果.泥岩压实及粘土矿物的成岩转化提供了其主要的物质来源.这种认识为砂岩储层的评价提供了重要的依据.
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| 关 键 词： | 碳酸盐胶结作用 钙质砂岩 孔隙度 沉积相 核桃园组 南阳凹陷 |
A PRELIMINARY INVESTIGATION ON CARBONATE CEMENTS AND THEIR ORIGIN IN SANDSTONES OF HETAOYUAN FORMATION, NANYANG DEPRESSION |
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| Yao Guangqing Li Huisheng.A PRELIMINARY INVESTIGATION ON CARBONATE CEMENTS AND THEIR ORIGIN IN SANDSTONES OF HETAOYUAN FORMATION, NANYANG DEPRESSION[J].Earth Science-Journal of China University of Geosciences,1991(5). |
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| Authors: | Yao Guangqing Li Huisheng |
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| Abstract: | The characteristics of the composition, attitude and distribution of carbonate cements in Hetaoyuan Formation, Nanyang depression have been described in this paper. The researches show that the composition, content and occurrence of carbonate cements in Hetaoyuan Formation are controlled by the sedimentary facies and diagenesis. The origin of carbonate cements results from the systematic interaction between sandstone and mudstone. The compaction of mudstone and transformation of clay minerals provided a huge number of carbonate minerals for sandstone cementation. It is very important for evaluating the sandstone reservoir. |
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| Keywords: | carbonate cementation calcareous sandstone porosity sedimentary facies Hetaoyuan Formation Nanyang depression |
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