恢复地层剥蚀厚度的一种新方法——包裹体测温法

A new method for estimating the removed thickness of sediment using homogenization temperature of fluid inclusions

剥蚀厚度恢复是反演盆地埋藏史和油气生成史的前提条件.利用包裹体均一化温度恢复剥蚀厚度是一种较新的方法,依据所利用包裹体生成时期的不同,将该方法分为两类.分别阐述了该法的理论依据、原理、和应注意的问题,并给出了2个应用实例.研究表明,该法在某些情况下能恢复泥岩声波时差法等常规方法无法应用的地区;在多种方法可应用地区,该法恢复结果同其他方法具有一定的可比性.包裹体测温法具有原理简单、资料来源方便、成本低、周期短的优点.

The calculation of the thickness of denuded sediment is the precondition to the inversion of the burial history and the hydrocarbon generation history of a basin.It is a new method to estimate the thickness of denuded sediment by the homogenization temperature of fluid inclusions.Two calculating methods are put forward according to different periods of generating fluid inclusions.The theoretical bases and the principles of these two calculating methods,and some problems to which attention should be paid in the applications of them are expatiated respectively.Two cases are shown here to explain how apply the two methods.It is shown that the results calculated by using the methods in this paper are close to those obtained by using other methods and they can also be applied where normal methods such as acoustic interval transit time of mudstone etc.can't be used.The methods in this paper have the advantages of simple principle,convenient data source,lower cost and shorter period.