| 鄂尔多斯盆地上三叠统延长组长6油层组储集层成岩作用及其影响因素 |
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| 引用本文： | 王岚,李文厚,林潼,王若谷.鄂尔多斯盆地上三叠统延长组长6油层组储集层成岩作用及其影响因素[J].古地理学报,2012,14(3):311-320. |
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| 作者姓名： | 王岚 李文厚 林潼 王若谷 |
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| 作者单位： | 1.中国石油勘探开发研究院，北京 100083;2.西北大学地质学系，陕西西安 710069;3.中国石油勘探开发研究院廊坊分院，河北廊坊 065007 |
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| 摘 要： | 鄂尔多斯盆地延长组长6油层组储集层是受沉积作用和成岩作用共同控制的典型低孔低渗储集层.长6油层组储集层主要为长石砂岩、岩屑长石砂岩和长石岩屑砂岩.盆地北部砂体具有长石含量高和石英含量低的特点,西南地区具有长石含量低、石英含量高和杂基含量高的特点.储集空间以剩余粒间孔和次生溶蚀孔为主.主要成岩作用类型有压实作用、胶结作用...
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| 关 键 词： | 储集层 成岩作用 成岩相 延长组 鄂尔多斯盆地 |
| 收稿时间： | 2011-05-24 |
Diagenesis and its influencing factors of the Chang 6 interval of Upper Triassic Yanchang Formation in Ordos Basin |
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| Wang Lan
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Li Wenhou
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Lin Tong
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Wang Ruogu.Diagenesis and its influencing factors of the Chang 6 interval of Upper Triassic Yanchang Formation in Ordos Basin[J].Journal of Palaeogeography,2012,14(3):311-320. |
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| Authors: | Wang Lan Li Wenhou Lin Tong Wang Ruogu |
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| Institution: | 1.Research Institute of Petroleum Exploration and Development，PetroChina，Beijing 100083;2.Department of Geology， Northwest University，Xi′an 710069，Shaanxi;3.Research Institute of Petroleum Exploration and Development-Langfang，PetroChina，Langfang 065007，Hebei |
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| Abstract: | The reservoir of the Chang 6 interval of Upper Triassic Yanchang Formation in the Ordos Basin,controlled by deposition and diagenesis,is characterized by low porosity and extraordinary low permeability.Its rock types mainly include feldspathic sandstone,lithic arkose and feldspathic litharenite.The sandbodies are rich in feldspar and low in quartz in the southern basin,but low in feldspar and rich in quartz and argillaceous matrix in the southwestern basin.The reservoir spaces are mainly residual intergranular pore and dissolution pore.The diagenetic types controlling the reservoir include compaction,cementation and dissolution,in which the chlorite cementation,feldspar dissolution and laumontite dissolution are favorable to form high quality reservoirs,while the compaction and carbonate cementation are the main contributors to decreasing the intergranular pore and reservoir compaction.There are two kinds of diagenetic facies models which are the Ansai and Huachi.The controlling factors on diagenesis are provenance,sedimentary environment,tectonic activity,hydrocarbon generation,meteoric water etc,and the sedimentary environment controlled the sandbody development firstly,then influence the type of diagenesis and physical property of the reservoir. |
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| Keywords: | reservoir diagenesis diagenetic facies Yanchang Formation Ordos Basin |
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