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近年来,沉积盆地中幕式流体活动是人们十分关心的热点问题,其主要活动形式有伴随泥或盐底劈活动,沿先存断裂系统突破和水力破裂.水力破裂(Hydrofracturing)是低渗的泥质岩石中幕式流体活动的主要途径之一,它是由于孔隙空间中流体压力的增大而导致泥质岩石内的破裂,这种破裂面通常形成于异常高的流体压力背景.水力破裂大大改善了沉积物的渗透性,这样孔隙中流体的流动远远大于没有水力破裂时的情形.因此,低渗泥质岩石中的水力破裂不仅影响油气的运移,而且还影响沉积物的压实作用迄今为止,水力破裂现象已经在世界上的许多沉积盆地中见到,如墨西哥湾盆地北海盆地以及我国的莺歌海-琼东南盆地.但有关水力破裂的定量模拟的文献极少,与之相伴生的幕式压实作用也很少提及.
In recent years, the mid-curtain fluid activity in the sedimentary basin is a hot issue that people are most concerned about, and its main active forms are mud-salt or salt-splitting activities, breakthrough along the pre-existing fault system and hydraulic rupture. Hydrofracturing is a hypotonic One of the major ways in which shale-type fluids move in muddy rocks is the rupture in the shaly rock due to the increase of fluid pressure in the pore space, which is usually formed on an unusually high fluid pressure background. Greatly improves the permeability of the sediments so that the fluid flow in the pores is much greater than in the absence of hydraulic fracturing and therefore hydraulic fracturing in low permeability muddy rocks affects not only the migration of hydrocarbons but also the pressure of the sediments To date, hydraulic fracturing has been observed in many sedimentary basins around the world, such as the North Sea Basin in the Gulf of Mexico Basin and the Yinggehai-Qiongdongnan Basin in our country, but there is little literature on quantitative modeling of hydraulic fractures, The incidental compaction is rarely mentioned.