新疆石油地质

›› 2013, Vol. 34 ›› Issue (4): 1-1.

• 论文 •    

大断距断层封闭性评价 ——以柴达木盆地英东地区油砂山断层为例

张焕旭1，陈世加1，张 静2，王 鹏2，周 游2，姜营海2   

  1. (1.西南石油大学 资源与环境学院,成都 610500;2.中国石油 青海油田分公司 勘探开发研究院,甘肃 敦煌 736200)
  • 出版日期:2019-01-01 发布日期:1905-07-12

An example from Youshashan fault in Yingdong area of Qaidam basin

ZHANG Huanxu1, CHEN Shijia1, ZHANG Jing2, WANG Peng2, ZHOU You2, JIANG Yinghai2   

  1. (1.School of Resources and Environment Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 2.Research Institute of Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736200, China)
  • Online:2019-01-01 Published:1905-07-12

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摘要： 在已建立的地层模型的基础上，分析了柴达木盆地英东地区油砂山断层的泥岩涂抹程度并对断裂带排驱压力进行了拟合计算，试图寻求一种在断距较大情况下断层封闭性评价的可行方法。研究认为，合理建立断层区域的地层模型，恰当划分小层是封闭性评价的前提，正确运用评价手段是封闭性评价的关键；油砂山断层的封闭性在垂向深度2 000 m左右是一个分界点，2 000 m以上部分开启，以下完全封闭；油砂山断层下盘深处有很好的勘探前景。

Abstract: By taking Youshashan fault in Yingdong area of Qaidam Basin as an example, based on the developed formation model, this paper analyses the shale smear of the fault and makes fitting calculation of the fault zone displacement pressure in order to find a feasible method for fault sealing ability evaluation in condition of large fault throw. It is suggested that reasonable development of the fault zone model and proper division of the layers are the premise of the fault sealing ability evaluation, proper utilization of the evaluation means is the key of it. The study shows that the depth of about 2 000 m is a node for sealing of Youshashan fault; the fault is partially open above the depth and completely closed below it. It is concluded that deep footwall of Youshashan fault could have good prospects for petroleum exploration

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