Abstract
Migration and accumulation of hydrocarbons are part of processes in petroleum system in the past, so the processes including generation and expulsion of hydrocarbon from source rocks are invisible at present. Analysis of compaction curves conducted by Dr.Magara in 1966 was the first proposal on migration and accumulation of petroleum quantitatively and his idea led to the quantitative discussions in petroleum exploration industry in Japan. Dynamic fluid model based on muti-phase Darcy flow had been developed and accepted at first in the world. Recently, various kinds of methods for basin simulation are developed based on static model, such as Ray Tracing (Flowpath) and Invasion Percolation methods. Furthermore, hybrid model is the latest model, which can be used as both of dynamic and static methods in case by case at the same time. In this paper, we consider the analysis of compaction curves shown by Magara (1966a) as the first breakthrough of quantitative analysis for fluid migration. We introduce the historical transition of quantitative basin model since Magara's idea of fluid migration had been proposed. Fluid migration models especially based on static model are introduced, and future orientation of quantitative analysis in petroleum exploration is indicated as personal view of authors. This paper is dedicated to Dr. Magara who tried to understand the compaction process quantitatively as the pioneer and gave us the first step of petroleum system analysis, such as sedimentary basin model.
