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中国大陆科学钻探主孔钻孔崩落与现场应力状态的确定

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李朋武　崔军文　王连捷　王微　乔子江. 中国大陆科学钻探主孔钻孔崩落与现场应力状态的确定[J]. 岩石学报, 2005, 21(2): 421-426.
引用本文: 李朋武　崔军文　王连捷　王微　乔子江. 中国大陆科学钻探主孔钻孔崩落与现场应力状态的确定[J]. 岩石学报, 2005, 21(2): 421-426.
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LI PengWu,CUI JunWen,WANG Lianjie,WANG Wei and QIAO ZiJiang Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China Institute of Geodynamics,Chinese Academy of Geological Sciences,Beijing 100081,China. The determination of in-situ stress from wellbore breakouts in the main borehole of the Chinese Continental Scientific Drilling[J]. Acta Petrologica Sinica, 2005, 21(2): 421-426.
Citation: LI PengWu,CUI JunWen,WANG Lianjie,WANG Wei and QIAO ZiJiang Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China Institute of Geodynamics,Chinese Academy of Geological Sciences,Beijing 100081,China. The determination of in-situ stress from wellbore breakouts in the main borehole of the Chinese Continental Scientific Drilling[J]. Acta Petrologica Sinica, 2005, 21(2): 421-426.
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中国大陆科学钻探主孔钻孔崩落与现场应力状态的确定

    • 中国地质科学院地质研究所，中国地质科学院地质研究所，中国地质科学院地质力学研究所，中国地质科学院地质力学研究所，中国地质科学院地质力学研究所 北京 100037，北京 100037，北京 100081，北京 100081，北京 100081

  • 基金项目:

    科技部国家重点基础研究发展规划项目资助(编号:2003CB716500)

The determination of in-situ stress from wellbore breakouts in the main borehole of the Chinese Continental Scientific Drilling

    摘要
  • 中国大陆科学钻探主钻孔在1200m深度以下出现了钻孔崩落现象,我们在1200m至2015m的范围内采集了82个钻孔成像测井图象资料。对钻孔崩落长轴方位进行了方向统计,结果表明近似对称的崩落平均方位为324.8°±3.3°,对应的平均最大水平主应力方位为54.8°±3.3°。利用崩落形状要素(崩落深度和崩落宽度)以及岩石力学实验确定的岩石内聚力和摩擦系数,计算了1269m、1500m、2000m等16个深度上的最大和最小水平主应力的大小。根据岩石密度测井资料计算了各个深度上静负载应力。三个主应力的大小和方向反映出主钻孔位置的应力场处于走滑应力状态,与地震震源机制解得到的走滑应力场一致。
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    • 参考文献(17)
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修回日期:  2005-01-30
刊出日期:  2005-03-31

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