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松辽盆地属于陆壳中盆地,处于欧亚板块东部的上地幔拱起带上。盆地就是在这拱起的背景上产生热穹窿作用,造成大陆初始张裂,在壳断裂的控制下形成。早期具有裂谷特点,中后期由于地壳均衡调整作用和太平洋板块俯冲影响由原来裂陷地带演化为坳陷,成为新克拉通内复合型盆地。松辽盆地虽是陆相盆地,但在白垩纪中期的两次全球性板块活动控制下,造成大面积富营养深水湖相沉积,为良好的生油岩。由于长时间的高热流、高地温条件控制了盆地的成岩作用和有机变质作用,因而盆地生油层表现出生油门限浅、演化快、成熟相带短的特点。在平面上早期裂谷与后期坳陷相重合的深坳陷深水相及其两侧地带含油最丰富。
The Songliao Basin belongs to the continental crust basin, and is located on the upper mantle arched belt in the eastern part of the Eurasian plate. The basin is the result of a hot dome on this arched background, which caused the initial rupture of the continent and formed under the control of the crustal fault. Early with rift characteristics, due to the adjustment of the crustal balance and the Pacific plate subduction in the late evolution from the original rift zone evolved into a depression, a new craton intracontinental basin. Although the Songliao Basin is a continental basin, under the control of two global plate activities in the mid-Cretaceous, large-scale eutrophic lacustrine facies deposits are formed, which is a good source rock. Due to the long period of high heat flux and high geothermal conditions controlling diagenesis and organic metamorphism in the basin, the paleo-oil reservoirs in the basin show characteristics of shallow, rapid evolution and short mature phases. The deep-water phase in the deep depression and its belts on both sides are most abundant in the plane, where the early rifts and the late-stage depressions coincide.