关键词: 构造特征, 断裂, 微构造, 控油作用, 松辽西斜坡

Abstract:

This paper, based on seismic data, well logging data and previous achievements, studies the structural features of Nenjiang-Qingbaikou formation in Songliao basin^,s western slope, where had undergone depression and reverse tectonics with diversified fault types, NNE and NNW striking, but small size. Regional structures can be divided into three zones, eastward, western simple slope zone, central anticline zone and eastern depression zone. Small scale structures are developed with fault-anticline, fault-nose and structural-litho traps. Faults characterized by high angle and small faulted displacement and widely-spreading anticline-litho conduits form vertical channels as a good oil-gas migration path, connecting the hydrocarcon source in eastern depression and controlling the oil-gas traps.

Key words: structural features, faults, micro-structures, oil-controlling, Songliao basin^,s western slope