| 鄂尔多斯盆地延长组长9小层致密砂岩含油性控制因素 |
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| 引用本文： | 汶锋刚,朱玉双,任战利,高鹏鹏,倪军,王仙仙,许维武,马彬,高明星,洪千里.鄂尔多斯盆地延长组长9小层致密砂岩含油性控制因素[J].现代地质,2018,32(1):183. |
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| 作者姓名： | 汶锋刚 朱玉双 任战利 高鹏鹏 倪军 王仙仙 许维武 马彬 高明星 洪千里 |
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| 作者单位： | (1西北大学 地质学系，陕西 西安710069；2陕西延长石油(集团) 有限责任公司 研究院，陕西 西安710075；
3西安石油大学 外国语学院，陕西 西安710065) |
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| 摘 要： | 综合分析鄂尔多斯盆地延长组长9小层典型的致密砂岩储集层物性、岩心照片及荧光照片等资料，研究长9小层致密砂岩含油性控制因素。研究表明，鄂尔多斯盆地延长组长9小层致密砂岩含油性主要受物性、非均质性、岩性等因素的影响，具体表现为：(1)高塑性岩屑含量影响砂岩含油性，高塑性岩屑含量越高，砂岩物性越差，其含油性也越差；(2)碳酸盐胶结物含量越高，砂岩物性越差，其含油性也越差；(3)物性与其含油性正相关；(4)非均质性，其对含油性的影响巨大，容易造成纵横线油气运移的“隔断”，油气难以进入储集层成藏；(5)岩性，水下分流河道砂体岩性以灰白色含泥砾中砂岩或中-细砂岩为主，而水下分流河道间以深灰色泥岩、粉砂质泥岩或泥质粉砂岩为主，水下分流河道砂在该层段含油性好；(6)裂隙，其对储层的运聚具有极大的改善作用。结合安定组沉积末期长9输导层顶面石油优势运移路径的模拟结果，优选出杏河地区向镰刀湾东方向、西河口-安塞-下坪、沿河口-冯庄北有利勘探区带。
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| 关 键 词： | 鄂尔多斯盆地 延长组长9层 致密砂岩 含油性 控制因素 |
Research on Oil-bearing Control Factors of the Chang 9 Tight Sandstone of Yanchang Formation in the Ordos Basin |
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| WEN Fenggang,ZHU Yushuang,REN Zhanli,GAO Pengpeng,NI Jun,WANG Xianxian,XU Weiwu,MA Bin,GAO Mingxing,HONG Qianli.Research on Oil-bearing Control Factors of the Chang 9 Tight Sandstone of Yanchang Formation in the Ordos Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2018,32(1):183. |
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| Authors: | WEN Fenggang ZHU Yushuang REN Zhanli GAO Pengpeng NI Jun WANG Xianxian XU Weiwu MA Bin GAO Mingxing HONG Qianli |
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| Institution: | (1Department of Geology, Northwest University, Xi’an, Shaanxi710069,China;
2 Institute of Shannxi Yanchang Petroleum Group CoLtd, Xi’an, Shaanxi710075,China;
3School of Foreign Languages,Xi’an Shiyou University, Xi’an, Shaanxi710065,China) |
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| Abstract: | The oil bearing control factors of the Chang 9 tight sandstone was studied in this paper based on the analysis of reservoir physical property, the core pictures and fluorescent image. The results are as followings: (1)The higher content of high plastic rock debris is, the worse sandstone physical property is, and the worse oil bearing is;(2)The higher content of carbonate cement correlates negatively with oil bearing; (3)The physical property correlates positively with the better oil bearing; (4)Heterogeneity had a huge impact on oil bearing led to petroleum partition in vertical and horizontal lines；(5)The lithology of sand bodies in underwater distributary channel mainly are gray mud gravel medium sandstone or middle fine sandstone with good oil bearing but that in interdistributary bay is dark grey mudstone, silty mudstone or argillaceous siltstone;(6)Fractures play a good role in improving the reservoir property. The simulated results also indicated the migration path of Chang 9 reservoir and the favorable exploration areas was selected that areas of Xinghe region to eastern Liandaowan, Xihekou Ansai Xiaping, Yanhekou north of Fengzhuang. |
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| Keywords: | the Ordos Basin Chang 9 of Yanchang Formation tight sandstone oil bearing controlling factor |
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