Through the analysis of the faults and their internal structure in Zhu I Depression, it is found that the internal structure of the late fault is obviously segmented vertically. It develops unitary structure (simple fault plane) in shallow layers, binary structure (induced fracture zone in hanging wall and sliding fracture zone in footwall) in middle, layers and ternary structure (induced fracture zone in hanging wall and sliding fracture zone in middle, and induced fracture zone in footwall) in deep layers. Because the induced fracture zone is a high porosity and permeability zone, and the sliding fracture zone is a low porosity and ultra-low permeability zone, the late fault in middle layers has the character of “transporting while sealing”. The late fault can transport hydrocarbon by its induced fracture zone in the side of the hanging wall and seal hydrocarbon by its sliding fracture zone in the side of the footwall. In deep layers, the late fault has the character of “dual-transportation”, induced fracture zones in both sides of hanging wall and footwall can transport hydrocarbon. The early fault that only developed in the deep layers is presumed to be unitary structure, which plays a completely sealing role in the process of hydrocarbon migration and accumulation due to inactivity during the hydrocarbon filling period. Controlled by hydrocarbon source, early/late faults, sand bodies and traps, two reservoir-forming models of “inverted L” and “stereo-spiral” can be proposed in middle layers, while two reservoir-forming models of “cross fault” and “lateral fault sealing” are developed in the deep layers of Zhu I Depression.

通过对朱一凹陷断层及其内部构造的分析，发现晚期断层的内部构造明显是垂直分割的。它在浅层发育单一结构（简单的断层平面），在中层发展成二元结构（在悬壁中引起断裂带而在下壁滑动性断裂带），在三元结构中发展出单层结构（在悬壁中引起的断裂带和在中壁滑动性断裂带），并在深层中引起了下盘的破裂带）。由于诱发裂缝带是高孔隙度和渗透率带，滑动裂缝带是低孔隙度和超低渗透率带，因此中层晚期断层具有“密封运移”的特征。晚断层可以通过其在顶壁一侧的诱发断裂带输送碳氢化合物，并通过其在底壁一侧的滑动断裂带输送碳氢化合物。在深层，晚期断层具有“双重输送”的特征，在上盘和下盘的两侧引起的破裂带都可以输送碳氢化合物。据推测，仅在深层发育的早期断层是单一结构，由于在油气充注期间没有活动，因此在油气运移和聚集过程中起到了完全封闭的作用。在烃源，早期/晚期断层，砂体和圈闭的控制下，可以在中层提出“倒L”和“立体螺”两种储层形成模型，