石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (4): 486-492.doi: 10.11743/ogg20100413

• 石油与天然气地质 • 上一篇    下一篇

松辽盆地西斜坡泥岩地层压实规律

  

  1. 中国科学院地质与地球物理研究所油气资源重点实验室，北京100029
  • 出版日期:2010-08-28 发布日期:2010-10-20
  • 作者简介:赵健（1982—），男，博士研究生，盆地模拟分析与油气成藏动力学。

Laws of mudstone compaction on the west slope of the Songliao Basin

  • Online:2010-08-28 Published:2010-10-20

PDF (PC)

803

被引次数

32

摘要：

根据泥岩压实作用规律，利用地球物理测井资料，系统研究了松辽盆地西斜坡地区泥岩地层压实状态，定量计算并分析了地层过剩压力。研究区西部隆起带地层基本处于正常压实状态，而龙虎泡阶地和齐家-古龙凹陷区内青山口组和嫩江组泥岩地层存在欠压实现象。通过压实曲线关键参数对比，结合实际地质资料分析了不同区域地层压实作用差异性产生的原因。在此基础上，定量计算了研究区地层过剩压力大小，获得了研究区地层压力结构特征和平面分布特征，并预测了地下流体的运聚特征。

关键词: 泥岩压实曲线, 过剩压力, 压力结构, 西斜坡, 松辽盆地

Abstract:

Based on the basic law of mudstone compaction，this paper does a systematic research on the mudstone compaction characteristics in the west slope of Songliao Basin by using various logging data. The overpressure is quantitatively calculated and analyzed. The results show that the strata in the western uplift zone of the study area are basically in normal compaction state，while the Qingshankou and Nenjiang Formations in the Longhupao terrace and QijiaˉGulongkou sag show under compaction. The causes of difference in compaction in different areas are analyzed through comparison of the key parameters of compaction curves and in combination with real geoˉlogic data. On the basis of this，we quantitatively calculate the overpressure in the study area，analyze the structural features and plannar distribution of formation pressures，and predict the features of subsurface fluid migration and accumulation.

Key words: mudstone compaction curve, overpressure, pressure structure, west slope, Songliao Basin

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