中文摘要：

基于＂同一应力场不同边界条件形成不同性质断层＂的构造解析原理,认为海拉尔盆地断陷期受南南东—北北西向拉张应力场作用,形成北北东和北东东向断裂,北北西向断裂明显走滑变形。断-坳转化期拉张应力场方位调整为近东西向,形成近南北向断裂,北北东、北东东和北北西向断裂扭动变形。伊敏组沉积末期盆地回返,受近东西向挤压应力场控制盆地左旋压扭变形,北北东和北东东向断裂强烈反转。依据断裂变形特征叠加关系,海拉尔盆地形成4套断裂系统：早期伸展断裂、中期张扭断裂、早期伸展中期张扭断裂和早期伸展中期张扭晚期反转断裂。断陷构造层早期伸展中期张扭反向断裂形成断层遮挡圈闭,早期伸展断裂将凹中隆和斜坡切割破碎形成断层复杂化的背斜圈闭,早期伸展断裂与中期张扭断裂交叉组合,形成复杂的断块圈闭。断-坳构造层早期伸展中期张扭晚期反转断裂呈＂梳状＂组合,形成典型的断块圈闭。基于断裂活动时期与成藏期耦合关系以及典型油气藏解剖的结果认为,早期伸展和早期伸展中期张扭断裂在成藏关键时刻为遮挡断层,且封闭的烃柱高度一般均小于圈闭的幅度,早期伸展中期张扭晚期反转断裂为调整型断层。基于圈闭的样式、断层在成藏中的作用及输导体系分析,海拉尔盆地断裂控藏模式分为二型4类,二型为原生油藏和次生油藏。原生油藏包括3类：一是灶缘油气侧向运移反向断层遮挡成藏模式,控藏断裂为早期伸展中期张扭断裂系统;二是灶内油气初次运移断层遮挡＂箱内＂成藏模式;三是灶内凹中隆油气侧向运移＂弥散式＂成藏模式。这两种模式控藏断裂均为早期伸展断裂。次生油藏为油气沿断裂垂向运移＂伞式＂成藏模式,控藏断裂为早期伸展中期张扭晚期反转断裂系统。

英文摘要：

Based on the structural analysis principle that different boundary conditions in the same stress field build different nature faults, it is commonly considered that fault subsidence of the Hailar Basin is controlled by the SSE-NNW-trending extensional stress field, forming NNE- and NEE-trending faults, with NNE-trending faults displaying distinct strike-slip deformation. During rifting-subsidence transformation phase of the Hailar Basin, the extensional stress field orientation of faulting and subsidence was adjusted to near EW direction, forming near NS-trending faults, and twisted deformation of NNE-, NEE- and SN-trending faults. The basin returned again at the end of Yimin Formation deposition and the near EW-trending compressional stress field resulted in the sinistrial deformation of the basin and intensive inversion of NNE- and NEE-trending faults. Based on the superimposion relatioinship between faulting and deformation, the Hailar Basis can be divided into four faulting systems： early extensional faulting, interim tensile shearing faulting, early extensional and interim tensile shearing faulting, and early extensional and interim tensile shearing and late reversal faulting. The early extension and interim tensile reverse faults of rift and subsidence layers resulted in fault sheltered traps. Early extensional faulting formed a complicated anticline traps by cutting through the uplifts within depression and slopes, and complicated fault block traps by assembling with interim tensile shearing faults. The early extension, interim tensile shearing and late reversal faults appear as ＂comb-like＂ composite, forming typical fault block traps in the rift-depression structure layer. Based on the coupling relation between fault activity period and accumulation period, and analysis results of typical oil and gas reservoirs, it is concluded that the early extension faults and early extension plus interim tensile shearing faults constituted sheltering faults at a critical moment of accumulation, with the sealing