孔壁崩落的实验研究与分级破坏模型
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摘要: 给出了一组砂岩试件的孔壁崩落的实验结果.根据实验结果提出了孔壁崩落的分级破坏模型,试图建立钻孔崩落的截面形状与地壳应力的定量关系.文中指出,崩落的产生不仅与某点的应力状态有关,还与该点附近的应力状态有关.根据本文模型所得孔壁崩落的截面形状与实验所得孔壁崩落的截面形状相符较好.
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[1] 丁健民、梁国平、郭启良、高建理，1987.根据钻孔崩落椭圆确定地壳应力方向.地震学报，9, 143——153.
[2] Gough, D. I. and Bell, J. S.，1981. Stress orientations from oil——well fractures in Alberta and Texas. Canadiun J. Earth Sci.，18, 638——645.
[3] Haimson, B. C. and Herrick, C. G.，1985. In situ stress evaluation from borehole breakouts: experimental studies. 26th US SyrrQosium on Rock Mechanics, 1207——1218. Rapid city, CD.
[4] Mason. L. G.，1984. The development of borehore breakout in sandstone. Thesis可Stanford University, 29——40.
[5] Zoback, M. D.，Moos, D.，Mastin, L. and Anderson, R. N.，1985. Well bore breakouts and in situ stress. J. Geophy.s. Res. , 90, B7, 5523——5530.[1] 丁健民、梁国平、郭启良、高建理，1987.根据钻孔崩落椭圆确定地壳应力方向.地震学报，9, 143——153.
[2] Gough, D. I. and Bell, J. S.，1981. Stress orientations from oil——well fractures in Alberta and Texas. Canadiun J. Earth Sci.，18, 638——645.
[3] Haimson, B. C. and Herrick, C. G.，1985. In situ stress evaluation from borehole breakouts: experimental studies. 26th US SyrrQosium on Rock Mechanics, 1207——1218. Rapid city, CD.
[4] Mason. L. G.，1984. The development of borehore breakout in sandstone. Thesis可Stanford University, 29——40.
[5] Zoback, M. D.，Moos, D.，Mastin, L. and Anderson, R. N.，1985. Well bore breakouts and in situ stress. J. Geophy.s. Res. , 90, B7, 5523——5530.
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