分析了 1 999年 1 1月 2 9日岫岩MS5 .6地震前 ,辽河油田 6口观测井的前兆异常特征 .观测项目有水位、采液量、采气量及套管压力等 .该次地震前 6口井的观测资料均出现明显的趋势异常和短临前兆异常 ,辐且具有较好的同步性 ,异常形态表现为升 降 升型 .抽水、注水、气压、温度等干扰因素对观测资料没有影响 ,异常是可信 The anomalous characteristics of precursors of 6 observation wells in Liaohe Oilfield before the Xiuyan MS5. 6 earthquake on January 29, 1999 were analyzed.The water level, liquid production, gas production and casing pressure were observed in this observation. The observation data of the first six wells showed obvious trend anomalies and short-antecedent precursory anomalies with good synchronicity and anomalous morphological characteristics of ascending and descending types.The interference factors such as pumping water, water injection, barometric pressure and temperature did not have any significant effect on the observed data Impact, abnormality is credible