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本文分析了华北地区部分油井油、水、气动态资料。歧口647井、塘11井、塘12井、旺11井震前2—5个月分别开始出现异常变化,最大异常幅度约为正常背景值的1—3倍。塘18井震前半个月出现突升突降变化,幅度竟达震前值的15倍。可以认为这种变化是芦龙5.3级地震前的短临震兆信息。文章还就油、水、气动态变化形成机理作了解释,提出自喷井测试构造应力活动的最佳观测方法是闭井测压。
This paper analyzes some oil well, water and gas dynamic data in North China. Qikou 647 wells, Tang 11 wells, Tong 12 wells, Wang 11 2-5 months before the earthquake began to appear abnormal changes, the maximum anomalous amplitude of about 1-3 times the normal background value. Tang 18 earthquake occurred half a month before sudden drop changes, the amplitude of the earthquake value of 15 times before. This change can be considered as a short-term epicenter before Loong-M 5.3 M-SST. The paper also explains the formation mechanism of the dynamic changes of oil, water and gas. It is proposed that the best observation method for testing tectonic stress activity from well is closed well pressure measurement.