泌阳凹陷王集地区隐蔽性断层识别方法及应用

王集地区位于泌阳凹陷北部斜坡带,为一继承性发育的鼻状构造,区内断裂系统复杂,隐蔽性断层控制的断鼻断块油藏在常规地震解释剖面中没有明显特征,圈闭识别难度大。基于对王集地区构造特征的整体认识,从地震识别的角度把王集地区隐蔽性断层归纳为核三上亚段小断层、核三下亚段断层和滑脱断层,并利用钻井数据,结合构造导向滤波、相干、分频等技术精细识别隐蔽性断层,有效地提高了隐蔽性断层识别的精度,并发现一批隐蔽性断层控制的断块圈闭。

Identification method and application of concealed fault recognition in Wangji area of Biyang sag

Located in the northern slope belt of Biyang sag, Wangji area is an inherited nose structural belt and has a complex fracture system in the area, the fault block reservoir of the concealed faults has no obvious characteristics in the conventional surface interpretation section, and the trap is difficult to be identified. Based on the whole understanding of structural characteristics of Wangji area, from the perspective of seismic identification, the concealed faults in Wangji area are classified as small faults in the upper subsection of He-3, faults in the lower subsection of He-3 and detachment faults. By using drilling data and combining structural steering filtering, coherence and frequency division techniques, the precision of concealed fault identification was effectively improved, and a number of fault block traps controlled by concealed faults were found.