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本文探讨了国内外大陆地壳构造与中新生代油气田的关系。得出由于上地幔隆起引起的张应力能够使地表产生大裂隙,形成断层(特别是正断层),因而形成凹陷盆地,其中大部分为地洼盆地。其中可以形成较厚的中新生代沉积,有些岩石是利于生油的。在合适的温度、压力、化学及构造条件下,可以形成油田或气田。很明显,上地幔隆起区与中新生代盆地,特别是地洼盆地中的油气田具有相对应的密切关系。我们可以根据下列条件来预测油田远景区;(1)莫霍界面隆起区;(2)与之对应的盆地,特别是地洼盆地,其中有巨厚的面积较大的宜于生油的沉积层;(3)有宜于生油的温度、压力、化学条件及较好的储油构造。文中还给出了一个预测实例。
This paper explores the relationship between the continental crust structure at home and abroad and the Meso-Cenozoic oil and gas fields. It is concluded that the tensile stress caused by the uplift of the upper mantle can cause large cracks in the earth’s surface and form faults (especially the normal faults), resulting in the formation of sag basins, mostly of the Diwa basin. Which can form a thick Mesozoic sediments, some rocks are conducive to oil. Under appropriate temperature, pressure, chemical and structural conditions, oil or gas fields can be formed. Obviously, the uplift area of the upper mantle has a corresponding close relationship with the Mesozoic-Cenozoic basins, especially the oil-gas fields in the Diwa basin. We can predict the prospective oilfields based on the following conditions: (1) the Moho interbedded uplift; (2) the corresponding basins, especially the Diwa basin, with large thick deposits suitable for oil production Layer; (3) suitable temperature, pressure, chemical conditions and better oil storage structure. The article also gives a prediction example.