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大庆油田南一区西部是大庆油田标准层套损重灾区。截至2013年底,累计套损率高达48.8%。130号断层贯穿南一区西部。通过对该断层周围套损井的分析得出:钻遇断层井套损比例小,该区域套损与断层滑移无关;标准层发生套损的时间和位置与断层有关,套损范围沿垂直于断层方向扩大。结合对研究区域岩性、注水压力等其他因素的分析,认为断层导水是导致南一区标准层套损的重要因素。
Daqing Oilfield in the western part of the South is the Daqing oilfield standard layer casing disaster hit areas. As of the end of 2013, the cumulative loss rate as high as 48.8%. Fault 130 runs through the western part of the South Zone. Through the analysis of casing damage around the fault, it is concluded that the percentage of casing damage in the case of drilling a fault is small and the casing damage in this area has nothing to do with the slip of the fault. The time and location of casing damage occurred in the standard layer are related to faults, In the direction of the fault. Combined with the analysis of other factors such as lithology and water injection pressure in the study area, it is considered that the fault water diversion is an important factor that leads to the casing damage in the standard zone in the south area.