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现代地质 ›› 2018, Vol. 32 ›› Issue (01): 183-190.DOI: 10.19657/j.geoscience.1000-8527.2018.01.18

• 油气勘探与开发 • 上一篇    下一篇

鄂尔多斯盆地延长组长9小层致密砂岩含油性控制因素

汶锋刚1,2(), 朱玉双1(), 任战利1, 高鹏鹏3, 倪军2, 王仙仙2, 许维武2, 马彬2, 高明星2, 洪千里2   

  1. 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
  • 收稿日期:2017-05-12 修回日期:2017-08-20 出版日期:2018-02-10 发布日期:2018-02-05
  • 通讯作者: 朱玉双,女,博士生导师,教授,1968年出生,石油与天然气地质专业,从事油藏早期评价、油藏描述、剩余油挖潜等领域的教学和科研工作。Email:ycsywfg@163.com
  • 作者简介:朱玉双,女,博士生导师,教授,1968年出生,石油与天然气地质专业,从事油藏早期评价、油藏描述、剩余油挖潜等领域的教学和科研工作。Email:ycsywfg@163.com
    汶锋刚,男,博士研究生,高级工程师,1981年出生,油气田地质与开发专业,从事油气田勘探与开发研究。Email:ycsywfg@163.com

Research on Oil-bearing Control Factors of the Chang 9 Tight Sandstone of Yanchang Formation in the Ordos Basin

WEN Fenggang1,2(), ZHU Yushuang1(), REN Zhanli1, GAO Pengpeng3, NI Jun2, WANG Xianxian2, XU Weiwu2, MA Bin2, GAO Mingxing2, HONG Qianli2   

  1. 1. Department of Geology, Northwest University, Xi’an, Shaanxi 710069,China
    2. Institute of Shannxi Yanchang Petroleum Group Co.Ltd., Xi’an, Shaanxi 710075,China
    3. School of Foreign Languages,Xi’an Shiyou University, Xi’an, Shaanxi 710065,China
  • Received:2017-05-12 Revised:2017-08-20 Online:2018-02-10 Published:2018-02-05

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。

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

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.

Key words: the Ordos Basin, Chang 9 of Yanchang Formation, tight sandstone, oil-bearing, controlling factor

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