松辽盆地的地层变形及反转剥蚀厚度的求取

Stratum Deformation and Solution of Thickness of Inversion Denudation in Songliao Basin

地层剥蚀厚度的恢复关系到能否准确地再现石油、天然气的生成、运移、聚集的发展过程,其求取的关键是地层变形模型的建立。在大量针对中、浅层目标处理的地震资料的解释基础上,确定了明水组沉积末期到第三系沉积末期为松辽盆地的地层变形期,建立了两种盖层变形模型:塑性流动型、层间滑脱型。并采用面积守恒原理,针对上述两种模型求取剥蚀厚度,分析了松辽盆地反转剥蚀的特征,得出构造反转区为油气聚集的最有利部位的认识。

The comeback of thickness of inversion denudation relates to the well and true recurrence of the developmental course of generation,migaration and accumulation for oil and gas The key of the solution is to establish the stratum deformation model Based on the explanation of plentiful seism information for the middle and shallow stratum, it makes sure that the era of stratum deformation in Songliao Basin is from the end of Mingshui Formation to the deposit end of Tertiary Two kinds of the stratum deformation model for capping layers are also founded, such as the type of plastic flow and the type of inter laminated detachment It uses the principle of area conversation to calculate the thickness of denudation to the two models above This paper analyzes the characteristic of inversion denudation in Songliao Basin and presents the recognition that inversion section of the structure is the most advantageous part of oil and gas accumulation