新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (6): 588-591.

• 油气勘探 • 上一篇    下一篇

陕北斜坡东部低渗透储集层的有利沉积相带

宋子齐1, 白振强1, 陈荣环1, 康立明1, 徐春华2, 罗志形2   

  1. 1.西安石油大学,陕西 西安 710065;
    2.中国石油新疆油田分公司勘探开发研究院, 新疆 克拉玛依 834000
  • 收稿日期:2003-12-08 修回日期:2004-02-07 发布日期:2021-01-14
  • 作者简介:宋子齐(1946-),男,重庆人,教授,测井解释及储集层研究。联系电话:029-8383867

Favorable Depositional Facies of L ow Permeability Reservoir in Eastern Shaanbei Slope

SONG Zi-qi1, BAI Zhen-qiang1, CHEN Rong-huan1, KANG Li-ming1, XU Chun-hua2, LUO Zhi-xing2   

  1. 1. Xian University of Petroleum, Xi'an, Shaanxi 710065, China;
    2. Research Institute of Exploration and Development, Karamay, Xinjiang 834000, China
  • Received:2003-12-08 Revised:2004-02-07 Published:2021-01-14

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摘要： 根据岩心和250 余口井测井资料分析,在对岩石类型及其组合、矿物组分、沉积结构、构造、测井相、生物化石、粒度特征分析的研究基础上,确认AS地区三角洲前缘长6水下分流河道微相、河口坝微相及其复合体是形成本区主要储集砂体的有利相带。由于受河流的控制和强烈影响,三角洲前缘相除发育水下分流河道外,各小层还发育河口坝被水下分流河道切割、叠置的复合型砂体。指出,长61-2层水下分流河道、河口砂坝发育最好,水下分流河道汇合和超覆河口砂坝的作用更为强烈,更好地控制了该区主力油层的分布和连片范围。

关键词: 鄂尔多斯盆地, 低渗透, 储集层, 沉积相

Abstract: Based on the core data and well logs from over 250 wells in studied area, the rock type and assemblage, mineral composition, deposi-tional pattern, structure, log facies, biologic fossil and grain size feature are studied, by which it is confirmed that the underwater distributary channel microfacies, mouth bar microfacies and complex sandbodies which are cut and superimposed by the underwater distributary channels at mouth bar in Chang-6 formation of delta front in AS area could be as the favorable facies for forming the main reservoir body. The specific de-scriptions of the indiv idual microfacies type, composition, characteristic, distribution and corresponding favorable areas were made, thus point-ing out that the well developed underwater distributary channel and mouth bar in Chang-67 member allow their processes to better controls of continuous distribution and range of the major oil-bearing zone in this area.

Key words: Erdos basin, low permeability, reservoir, sedimentary facies

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