石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (2): 212-218.doi: 10.11743/ogg20100212

• 石油地质理论 • 上一篇    下一篇

基于地震波阻抗反演的小层砂体预测技术——在大庆油田州57水平井区块的应用

单敬福1, 王峰2, 孙海雷3, 孙继刚4, 韩喜5   

  1. 1.中国石油大学资源与信息学院; 2.上海理工大学机械学院; 3.中国石油天然气股份有限公司大庆油田公司勘探开发研究院; 4.中国石油天然气股份有限公司大庆油田公司采油四厂地质大队; 5.中国石油天然气股份有限公司大庆油田公司采油八厂地质大队
  • 出版日期:2010-04-26 发布日期:2010-09-02

Prediction of sublayer sandstones based on wave impedance inversion in the wellblock of the horizontal well Zhou-57

Shan Jinfu1; Wang Feng2; Sui Hailei3; Sun Jigang4;  Han Xi5   

  1. 1.Faculty of Natural Resource & Information Technology; China University of Petroleum; Beijing 102249;
    2.College of Mechanical Engineering; University of Shanghai For Science And Technology; Shanghai; 200093;
    3.Exploration and Development Research Institute of PetroChina Daqing Oil Field; Daqing; Heilongjiang 163511;
    4.Geology Unit of the No.4 Oil Production Company; PetroChina Daqing Oil Field; Daqing; Heilongjiang 163511;
    5.Geology Unit of the No.8 Oil Production Company; PetroChina Daqing Oil Field; Daqing; Heilongjiang 163511
  • Online:2010-04-26 Published:2010-09-02

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摘要：

在油气勘探与开发的整个历程中,无论是勘探阶段还是进入开发后的任何时期,尤其在对水平井区目的层的砂体预测时,始终离不开对储层沉积特征的分析,州57井研究区主力油层为葡萄花油层,其沉积时期处在松辽盆地北部大型三角洲沉积体系中的前缘相带到湖相的过度带之上,沉积地层较薄,沉积单砂体一般不超过2 m。因为砂体的三维展布特征受控于地质历史时期沉积体系的时空变迁及演化,每一次的湖进湖退严格控制砂体的分布与走向,因此,在精细刻画小层砂体过程中,首先要精细的地质研究,然后利用储层地震波阻抗反演对油田小层砂体进行预测,为后期调整注采关系、提高采收率提供重要参考依据。

关键词: 水平井, 地震波阻抗反演, 小层砂体, 采收率, 大庆油田, 松辽盆地

Abstract:

During the whole process of petroleum exploration and development,the prediction of sandbodies in any target area,especially those in wellblocks of horizontal wells,is always dependent upon an analysis of reservoir deposition systems.The well Zhou-57 produces from the Putaohua Formation,which was deposited within the transition zone from a large-scale delta front to lake in northern Songliao Basin.The formation features in thin single sand bodies with a thickness of less than 2 m.The spatial distribution of these sandbodies is controlled by the variation and evolution of deposition systems during different geological times.The distribution and strike of sandboies are strictly controlled by lake transgression and regression.Therefore,a fine description of these sandbodies requires firstly a detailed geological study and then a prediction of sandstone sublayers through seismic wave impedance inversion.The prediction results can be used as important reference factors to adjust the injection-production pattern and improve the recovery ratio during the later phase of development.

Key words: horizontal well, wave impedance inversion, sublayer sandstone, recovery, Daqing oilfield, Songliao Basin