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根据东北地区航磁资料的新近编图和数据处理结果,发现在松辽盆地中有四条相互平行的北西向基底断裂发育,它们呈北50°西方向延伸,近等间距排列斜切盆地。这几条北西向断裂最早可能是古生代大洋收缩封闭过程中形成的转换断层,中生代表现为张性,新生代又转为压性。从盆地中部两条北西向断裂正好通过大庆油田和扶余油田来看,北西向断裂对油气的运移和聚集有重要作用。根据构造条件的类比,绥化凹陷东北侧北西向断裂附近,是大庆油田外围找油中最值得注意的地区。
According to the recent compilation and data processing results of the aeromagnetic data in northeast China, it is found that there are four NW-trending basal faults developed in the Songliao Basin. They extend to the north 50 ° west and are arranged in a bevelled basin at equal intervals. These northwesterly fractures may be the earliest conversion faults formed in the Paleozoic oceanic contraction and closure process. Mesozoic expansions are Zhang Xing, Cenozoic and compressive. The two northwesterly fractures from the central part of the basin coincided with the Daqing and Fuyu fields. The north-west fault plays an important role in hydrocarbon migration and accumulation. According to the analogy of the tectonic setting, the northeast-northwest fault of Suihua Depression is the most notable area in the periphery of Daqing oilfield.