山东胜利油田角07井注水地震序列的演化及其机制
THE EVOLUTION AND MECHANISM OF EARTHQUAKE SEQUENCES INDUCED BY WATER INJECTION IN JIAO 7 OIL WELL OF SHENGLI OIL FIELD, SHANDONG PROVINCE
-
摘要: 1985年12月至1986年1月发生的山东省胜利油田角07井注水地震序列,经历了特有的演化过程,即全序列可分解为4个子序列,且子序列逐渐由震群型向主余型过渡.前期地震(最大地震之前)呈升级趋势,地震b值前期高于后期,地震时间结构的分数维D则前期低于后期,以及较大地震的lg△t-lgt前期较为紊乱,而后期线性相关等.计算表明,注水后岩石孔隙压力大于临界孔隙压力,从而诱发了地壳浅部岩石低初始应力的提前释放,而水的渗透作用则导致岩石孔隙压力随时间由高度非均匀分布向相对均匀分布转换.角07井地震序列的演化与这一物理过程有关.Abstract: The earthquake sequences,occurring from December 1985 to January 1986,induced by water injection into Jiao 7 oil well of Shengli oil field,Shandong Province. The earthquakes have undergone a particular evolutional process,the whole sequence can be divided into four sub-sequences,and the sub-sequence transiting gradually from the earthquake swarm type to the main shock-after shock type; the early earthquakes occurring before the largest earthquake showing a tendency of increase in magnitude,the earthquake b-value being higher in the early period than in the late period,the fractal dimension,D.,of the time composition of earthquakes being lower in the early period than the in late period. The lg(△t)-lg(t) of the major earthquakes being more disorderly in the early period,and showing linear dependence in the late period. The pore pressure is larger than the critical pore pressure in the rock after water injection and therefore inducing premature release of the initial stress existing in the rock of shallow crust,but the osmosis of the water causes transform of the rock pore pressure from highly inhomogeneous distribution into relatively homogeneous distribution with time. The evolution of the earthquake sequences induced by water injection in Jiao 7 oil well is related to this kind of physical process.
-
-
[1] Healy, J. H., Rubey, W. W., Griggs, D. T. and Raleigh, C. B., 1968. The Denever Earthquakes.Science, 161,1301——1310,
[2] Raleigh, C. B., Heaiy, J. H., and Bredehoeft, H. D., 1976. An Experiment in Earthquake Controlat Rangel, Colorado. Science, 191,1230——1237,
[3] Ohtake, M., 1977,日本松代注水诱发地震.胡毓良译,国外地质,10; 38——43,
[4] 国家地震局地震研究所,1984.中国诱发地震,189——195,地震出版社.
[5] 刁守中、周焕鹏、郭爱香,1987.山东角07井注(漏)水诱发地震—震源参数与地震序列特征.地震地质,9,3,84——89,
[6] 沈崇刚、陈厚群、张楚汉、黄力生、李自强、杨真荣、王大钧、罗学海,1974,新丰江水库地震及其对大坝的影响.中国科学,2: 184——205,
[7] Gupta, H. K., Rastogi, B. K. and Narain, H., 1972. Some discriminatory characteristics of earthquakes near the Kariba, Kremasta and Koyna artificial Lokes. Bull. Seismol. Soc. Am., 62,493——507,
[8] 国家地震局地震研究所,1980.丹江口水库诱发地震文集,80————89地震出版社.
[9] 洪时中、洪时明,1987.分数维及其在地震科学中的应用前景.四川地震,1: 39——46,
[10] 谷维成、谢小碧、赵莉,1979.强余震的时间分布特征及其理论解释.地球物理学报,22,32——46,
[11] 施行觉、Wang, C. Y., 1986.水的扩散与断层的粘滑.中国地震,2,3,14——21,
[12] 邹泉生、张天庆,1985,胜利油田油水井动态异常与地震关系的研究.华北地震科学,3,增刊,6——12,
[13] 陈运泰、Knopoff, L., 1988.地震序列的模拟.陈祥熊译,世界地震译丛,1: 9——19,
[14] 尹祥础、李世愚、李红、王敏,1987.从断裂力学观点探讨b值的物理实质.地震学报,9,364——374,[1] Healy, J. H., Rubey, W. W., Griggs, D. T. and Raleigh, C. B., 1968. The Denever Earthquakes.Science, 161,1301——1310,
[2] Raleigh, C. B., Heaiy, J. H., and Bredehoeft, H. D., 1976. An Experiment in Earthquake Controlat Rangel, Colorado. Science, 191,1230——1237,
[3] Ohtake, M., 1977,日本松代注水诱发地震.胡毓良译,国外地质,10; 38——43,
[4] 国家地震局地震研究所,1984.中国诱发地震,189——195,地震出版社.
[5] 刁守中、周焕鹏、郭爱香,1987.山东角07井注(漏)水诱发地震—震源参数与地震序列特征.地震地质,9,3,84——89,
[6] 沈崇刚、陈厚群、张楚汉、黄力生、李自强、杨真荣、王大钧、罗学海,1974,新丰江水库地震及其对大坝的影响.中国科学,2: 184——205,
[7] Gupta, H. K., Rastogi, B. K. and Narain, H., 1972. Some discriminatory characteristics of earthquakes near the Kariba, Kremasta and Koyna artificial Lokes. Bull. Seismol. Soc. Am., 62,493——507,
[8] 国家地震局地震研究所,1980.丹江口水库诱发地震文集,80————89地震出版社.
[9] 洪时中、洪时明,1987.分数维及其在地震科学中的应用前景.四川地震,1: 39——46,
[10] 谷维成、谢小碧、赵莉,1979.强余震的时间分布特征及其理论解释.地球物理学报,22,32——46,
[11] 施行觉、Wang, C. Y., 1986.水的扩散与断层的粘滑.中国地震,2,3,14——21,
[12] 邹泉生、张天庆,1985,胜利油田油水井动态异常与地震关系的研究.华北地震科学,3,增刊,6——12,
[13] 陈运泰、Knopoff, L., 1988.地震序列的模拟.陈祥熊译,世界地震译丛,1: 9——19,
[14] 尹祥础、李世愚、李红、王敏,1987.从断裂力学观点探讨b值的物理实质.地震学报,9,364——374,
计量
- 文章访问数: 1414
- HTML全文浏览量: 28
- PDF下载量: 81
下载:
