| 鄂尔多斯盆地直罗油田长6油层组成岩作用及孔隙演化研究 |
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| 引用本文： | 王彩萍1,2. 鄂尔多斯盆地直罗油田长6油层组成岩作用及孔隙演化研究[J]. 延边大学学报(自然科学版), 2010, 0(2): 161-165 |
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| 作者姓名： | 王彩萍1 2 |
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| 作者单位： | (1.西安石油大学 油气资源学院,陕西 西安 710065; 2.陕西延长石油(集团)有限责任公司 直罗采油厂,陕西 富县 727500) |
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| 摘 要： | 位于鄂尔多斯盆地的直罗油田三叠系延长组长6油层组为近年来新开发的一个主力油气产层。岩石学和成岩作用特征研究表明,直罗油田长6油层组以细粒长石砂岩和岩屑长石砂岩为主,砂岩经历了机械压实作用、胶结作用、交代作用和溶蚀作用等成岩作用,成岩作用处于晚成岩阶段A期。成岩作用控制了储层砂岩孔隙发育特征,其中压实作用与胶结作用是导致储层超低渗的主导因素,而次生溶蚀孔隙的形成对储层砂岩物性具有一定改造作用,并控制了该区长6油层组相对高孔高渗储层的展布特征。
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| 关 键 词： | 成岩作用 成岩阶段 孔隙类型 长6油层组 直罗油田 鄂尔多斯盆地 |
Diagenesis and Porosity Evolution of Chang-6 Oil-bearing Formation in Zhiluo Oilfield of Ordos Basin |
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| WANG Cai-ping1,' target="_blank" rel="external">2. Diagenesis and Porosity Evolution of Chang-6 Oil-bearing Formation in Zhiluo Oilfield of Ordos Basin[J]. Journal of Yanbian University (Natural Science), 2010, 0(2): 161-165 |
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| Authors: | WANG Cai-ping1,' target=" _blank" rel=" external" >2 |
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| Affiliation: | (1.School of Petroleum Resources, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China; 2.Zhiluo Oil Recovery Factory, Shaanxi Yanchang Petroleum(Group)Company Limited, Fuxian 727500, Shaanxi, China) |
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| Abstract: | Chang-6 Oil-bearing Formation of Triassic Yanchang Formation in Zhiluo Oilfield of Ordos Basin is weightily exploited in recent years. Characteristic of petrology and diagenesis of the oil-bearing formation was studied. The result showed that Chang-6 Oil-bearing Formation was composed by fine-grained and debris feldspar sandstones; sandstone experienced complex diagenesis including compaction, cementation, alteration and dissolution; diagenesis reached A period in the late diagenetic stage. Diagenesis controlled reservoir porosity of sandstones in which compaction and cementation caused low permeability while secondary vugular-solution pore improved the reservoir property and controlled distribution characteristics of Chang-6 Oil-bearing Formation with relatively high permeability and porosity. |
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| Keywords: | diagenesis diagenetic stage pore type Chang-6 Oil-bearing Formation Zhiluo Oilfield Ordos Basin |
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