对孔壁崩落预测地应力方法的评价
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摘要
介绍了几种孔壁崩落预测地应力的方法,并对这些方法进行了比较.孔壁崩落预测地应力的方法主要与崩落规模有关,即崩落的深度和跨度.由于崩落是连续的,以崩落深度为主要参数的预测方法,因测量初次崩落深度困难而应用不便.崩落跨度基本保持不变,以崩落跨度为主要参数的预测方法虽然应用方便,但是此类方法在使用不同强度准则时也在较大程度上影响预测结果.
Several types of methods about predicting in-situ stress using borehole breakout are introduced in this paper,and then compared with each other.Using borehole breakout to predict in-situ stress is related to the scale of breakout,viz the depth and span of borehole breakout.As a result of borehole breakout is continuous,the first breakout depth is hard to measure,the methods using breakout depth as the main parameter are unsuitable to apply.The span of borehole breakout is unchanged basically.Although the methods using breakout span seem to be more convenient,the prediction results of this type of method are more likely affected by the application of strength criterion.
Several types of methods about predicting in-situ stress using borehole breakout are introduced in this paper,and then compared with each other.Using borehole breakout to predict in-situ stress is related to the scale of breakout,viz the depth and span of borehole breakout.As a result of borehole breakout is continuous,the first breakout depth is hard to measure,the methods using breakout depth as the main parameter are unsuitable to apply.The span of borehole breakout is unchanged basically.Although the methods using breakout span seem to be more convenient,the prediction results of this type of method are more likely affected by the application of strength criterion.
引文
[1]VERNIK L,ZOBACK M D.Estimation of maximum horizontal principal stress magnitude from stress-induced well borebreakouts in the Cajon pass scientific research borehole[J].Geophys Res,1992,97(B4):5109-5119.
[2]陈永明.椭圆形井眼的井壁稳定性分析[J].中国海上油气工程,1996,8(5):28-31.
[3]BELL J S,GOUGH D I.Northeast-southwest compressive stress in Alberta-Evidence from oil well[J].Earth and Plane-tary Science Letters,1979,45:475-482.
[4]HAIMSON B.Micromechanisms of borehole instability leading to breakouts in rocks[J].International Journal of RockMechanics and Mining Sciences,2007,44:157-173.
[5]HAIMSON B,LEE H.Borehole breakouts and compaction bands in two high-porosity sandstones[J].International Jour-nal of Rock Mechanics and Mining Sciences,2004,41:287-301.
[6]CORNET F H,BERARD T H,BOUROUIS S.How close to failure is a granite rock mass at a 5km depth?[J].Inter-national Journal of Rock Mechanics and Mining Sciences,2007,44:47-66.
[7]CUSS R J,RUTTER E H,HOLLOWAY R F.Experimental observations of the mechanics of borehole failure in poroussandstone[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:747-761.
[8]YAGHOUBI A A,ZEINALI M.Determination of magnitude and orientation of the in-situ stress from borehole breakoutand effect of pore pressure on borehole stability-Case study in Cheshmeh Khush oil field of Iran[J].Journal of PetroleumScience and Engineering,2009,67:116-112.
[9]ZOBACK C Y,MOOS D,MASTIN L,et al.Well bore breakout and in situ stress[J].Journal of Geophysical Reseach,1985,90(B7):5523-5530.
[10]SONG I,HAIMSON B.Polyaxial strength criteria and their use in estimating situ stress magnitudes from borehole break-out dimensions[J].International Journal of Rock Mechanics and Mining Sciences,1997,34:116-80.
[11]ALAJAI A M,ZIMMERMAN R W.Relation between the Mogi and the Coulomb criteria[J].International Journal ofRock Mechanics and Mining Sciences,2005,42(3):431-439.
[12]MINGQING YOU.True-triaxial strength criteria for rock[J].International Journal of Rock Mechanics and Mining Sci-ences,2009,46(1):431-439.
[13]尤明庆.岩石指数型强度准则在主应力空间的特征[J].岩石力学与工程学报,2009,28(8):1541-1551.
[14]张彦山,梁国平,丁健民,等.由井壁崩落估算水平主应力量值的研究[C]//地壳构造与地壳应力文集,1999:134-139.
[15]BARTON C A,ZOBACK M D,BURNS K L.In-situ stress orientation and magnitude at the Fenton geoth-ermalsite,NewMexico,determined from wellbore breakouts[J].Geophys Res Lett,1988,15(5):467-70.
[16]ZOBACK M D,HEALY J H.In situ stress measurements to 3.5 km depth in the Cajon Pass Scienti?c Research Bore-hole:implications for the mechanics of crustal faulting[J].J Geophys Res,1992,97:50-57.
[17]HAIMSON B C,CHANG C.True triaxial strength of the KTB amphibolite under borehole wall conditions and its use toestimate the maximum horizontal in situ stress[J].Geophys Res,107(B10):2257.
[18]HAIMSON B,LIN W,OKU H,et al.Integrating borehole-breakout dimensions,strength criteria,and leak-off test re-sults,to constrain the State Of stress across the Chelungpu Fault,Taiwan[J].Tectonophysics,2009,5(16):1-8.
[19]ALAJAI A M,ZIMMERMAN R W.Stability analysis of vertical boreholes using the Mogi-Coulomb failure criterion[J].International Journal of Rock Mechanics and Mining Sciences,2006,43:1200-1211.
[20]李明武,崔军文,王连捷,等.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.
[21]王连捷,崔军文,张晓卫,等.中国大陆科学钻主孔现今地应力状态[J].中国地质大学学报,2006,31(4):505-512.
[22]阮小平,毛吉震,崔占桃.孔壁崩落的实验研究与分级破坏模型[J].地震学报,1992(4):493-499.
[23]ZOBACK M D,BARTON C A,BRUDY M,et al.Determination of stress orientation and magnitude in deep wells[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:1049-1076.
[24]HAIMSON B,KOVACICH J.Borehole instability in high-porosity Berea sandstone and factors affecting dimensions andshape of fracture-like breakouts[J].Engineering Geology,2003,69:219-231.
[25]HAIMSON B.Fracture-Like Borehole Breakouts in High-Porosity Sandstone Are They Caused by Compaction Bands[J].Phys Chem Earth:A,2001,26(1/2):15-20.
[2]陈永明.椭圆形井眼的井壁稳定性分析[J].中国海上油气工程,1996,8(5):28-31.
[3]BELL J S,GOUGH D I.Northeast-southwest compressive stress in Alberta-Evidence from oil well[J].Earth and Plane-tary Science Letters,1979,45:475-482.
[4]HAIMSON B.Micromechanisms of borehole instability leading to breakouts in rocks[J].International Journal of RockMechanics and Mining Sciences,2007,44:157-173.
[5]HAIMSON B,LEE H.Borehole breakouts and compaction bands in two high-porosity sandstones[J].International Jour-nal of Rock Mechanics and Mining Sciences,2004,41:287-301.
[6]CORNET F H,BERARD T H,BOUROUIS S.How close to failure is a granite rock mass at a 5km depth?[J].Inter-national Journal of Rock Mechanics and Mining Sciences,2007,44:47-66.
[7]CUSS R J,RUTTER E H,HOLLOWAY R F.Experimental observations of the mechanics of borehole failure in poroussandstone[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:747-761.
[8]YAGHOUBI A A,ZEINALI M.Determination of magnitude and orientation of the in-situ stress from borehole breakoutand effect of pore pressure on borehole stability-Case study in Cheshmeh Khush oil field of Iran[J].Journal of PetroleumScience and Engineering,2009,67:116-112.
[9]ZOBACK C Y,MOOS D,MASTIN L,et al.Well bore breakout and in situ stress[J].Journal of Geophysical Reseach,1985,90(B7):5523-5530.
[10]SONG I,HAIMSON B.Polyaxial strength criteria and their use in estimating situ stress magnitudes from borehole break-out dimensions[J].International Journal of Rock Mechanics and Mining Sciences,1997,34:116-80.
[11]ALAJAI A M,ZIMMERMAN R W.Relation between the Mogi and the Coulomb criteria[J].International Journal ofRock Mechanics and Mining Sciences,2005,42(3):431-439.
[12]MINGQING YOU.True-triaxial strength criteria for rock[J].International Journal of Rock Mechanics and Mining Sci-ences,2009,46(1):431-439.
[13]尤明庆.岩石指数型强度准则在主应力空间的特征[J].岩石力学与工程学报,2009,28(8):1541-1551.
[14]张彦山,梁国平,丁健民,等.由井壁崩落估算水平主应力量值的研究[C]//地壳构造与地壳应力文集,1999:134-139.
[15]BARTON C A,ZOBACK M D,BURNS K L.In-situ stress orientation and magnitude at the Fenton geoth-ermalsite,NewMexico,determined from wellbore breakouts[J].Geophys Res Lett,1988,15(5):467-70.
[16]ZOBACK M D,HEALY J H.In situ stress measurements to 3.5 km depth in the Cajon Pass Scienti?c Research Bore-hole:implications for the mechanics of crustal faulting[J].J Geophys Res,1992,97:50-57.
[17]HAIMSON B C,CHANG C.True triaxial strength of the KTB amphibolite under borehole wall conditions and its use toestimate the maximum horizontal in situ stress[J].Geophys Res,107(B10):2257.
[18]HAIMSON B,LIN W,OKU H,et al.Integrating borehole-breakout dimensions,strength criteria,and leak-off test re-sults,to constrain the State Of stress across the Chelungpu Fault,Taiwan[J].Tectonophysics,2009,5(16):1-8.
[19]ALAJAI A M,ZIMMERMAN R W.Stability analysis of vertical boreholes using the Mogi-Coulomb failure criterion[J].International Journal of Rock Mechanics and Mining Sciences,2006,43:1200-1211.
[20]李明武,崔军文,王连捷,等.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.
[21]王连捷,崔军文,张晓卫,等.中国大陆科学钻主孔现今地应力状态[J].中国地质大学学报,2006,31(4):505-512.
[22]阮小平,毛吉震,崔占桃.孔壁崩落的实验研究与分级破坏模型[J].地震学报,1992(4):493-499.
[23]ZOBACK M D,BARTON C A,BRUDY M,et al.Determination of stress orientation and magnitude in deep wells[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:1049-1076.
[24]HAIMSON B,KOVACICH J.Borehole instability in high-porosity Berea sandstone and factors affecting dimensions andshape of fracture-like breakouts[J].Engineering Geology,2003,69:219-231.
[25]HAIMSON B.Fracture-Like Borehole Breakouts in High-Porosity Sandstone Are They Caused by Compaction Bands[J].Phys Chem Earth:A,2001,26(1/2):15-20.
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