| 乌石凹陷流沙港组成岩作用及其孔隙演化 |
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| 引用本文： | 刘冲,朱定军,苏文辉,陈金定.乌石凹陷流沙港组成岩作用及其孔隙演化[J].地质与资源,2013,22(5):426-430. |
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| 作者姓名： | 刘冲 朱定军 苏文辉 陈金定 |
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| 作者单位： | 1. 中海油能源发展钻采工程研究院 湛江实验中心, 广东 湛江 524057;2. 中海石油(中国)有限公司 湛江分公司, 广东 湛江 524057 |
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| 摘 要： | 通过铸体薄片鉴定、X射线衍射、扫描电镜以及镜煤等多种实验手段对乌石凹陷流沙港组砂岩成岩作用及孔隙演化做了详细研究.结果表明:乌石凹陷流沙港组二段、三段岩石类型主要为石英砂岩,少量长石石英砂岩,粒级分选中等偏差.砂岩的成岩强度均已达到中成岩阶段A期.孔隙类型以原生粒间孔和次生溶蚀孔隙为主,压实作用、胶结作用等减少原生粒间孔隙,溶蚀作用产生大量的次生溶孔,改善储集层物性.
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| 关 键 词： | 乌石凹陷 流沙港组 成岩作用 成岩阶段 孔隙演化 |
| 收稿时间： | 2012-10-08 |
DIAGENESIS AND PORE EVOLUTION OF THE LIUSHAGANG FORMATION IN WUSHI SAG |
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| LIU ChongZhanjiang Central Laboratory,Research Institute of Energy Technology and Oilfield Engineering,CNOOC,Zhanjiang,Guangdong Province,China ZHU Ding-junZhanjiang Branch,CNOOC,Zhanjiang,Guangdong Province,China SU Wen-huiZhanjiang Central Laboratory,Research Institute of Energy Technology and Oilfield Engineering,CNOOC,Zhanjiang,Guangdong Province,China CHEN Jin-ding.DIAGENESIS AND PORE EVOLUTION OF THE LIUSHAGANG FORMATION IN WUSHI SAG[J].Geology and Resources,2013,22(5):426-430. |
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| Authors: | LIU ChongZhanjiang Central Laboratory Research Institute of Energy Technology and Oilfield Engineering CNOOC Zhanjiang Guangdong Province China ZHU Ding-junZhanjiang Branch CNOOC Zhanjiang Guangdong Province China SU Wen-huiZhanjiang Central Laboratory Research Institute of Energy Technology and Oilfield Engineering CNOOC Zhanjiang Guangdong Province China CHEN Jin-ding |
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| Institution: | 1. Zhanjiang Central Laboratory, Research Institute of Energy Technology and Oilfield Engineering, CNOOC, Zhanjiang 524057, Guangdong Province, China;2. Zhanjiang Branch, CNOOC, Zhanjiang 524057, Guangdong Province, China |
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| Abstract: | A detailed study is carried out on the diagenesis and pore evolution with thin section observation,X-ray diffraction,scanning transmission electron microscope and vitrinite reflectance.The results show that the rock type of the 2nd and 3rd members of Liushagang Formation in the Wushi Sag is dominated by quartz sandstone,with minor feldspathic quartz sandstone.The size fraction of grains is moderate to poor.The diagenesis of the sandstone has reached to Stage A of the middle diagenetic period.The pores are mainly primary intergranular and secondary dissolution types.The primary intergranular pores decrease with the compaction and cementation of sandstone,while the secondary pores increase with dissolution,which improve the physical property of reservoir. |
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| Keywords: | Wushi Sag Liushagang Formation diagenesis diagenetic stage pore evolution |
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