Abstract:

In order to improve the oil and gas resource assessment in the main basins implemented by PetroChina Company Limited,three main assessment methods including genetic method,analogical method and statistical method were anlayzed.A lot of new advancements in the research of assessment methods were acquired.By introducing the petroliferous system theory,the genetic method was greatly improved and suitable for better understanding about the process of oil and gas generation,migration and accumulation.By establishing the uniform low-limit standard for the effective source rocks and the hydrocarbon generation plate of various source rocks,the computation precision of hydrocarbon-generation amount was improved.The difficult problem about determination of the quantitative values of migration-accumulation coefficient was solved by dissection of independent oil migration and accumulation units.The database for analogical method was established,according to the dissection of 123 calibrated units with various types.The database can not only strengthen the functions of analogical method and improve the forecast precision of oil and gas resources but also determine the spatial distribution and the quality of resources.New advancements about the function of statistical method were also expanded.

Key words: oil and gas resources, assessment method, research advancement, genetic method, analogical method, statistical method

摘要：

为了搞好中国陆上主要含油气盆地的油气资源评价工作,对成因法、类比法和统计法三大类主要评价方法进行了大量的研究,取得了一系列的新进展.成因法中引入了含油气系统的研究思路,深化了对油气生成、运移、聚集过程的认识.通过对有效烃源岩下限标准及各类烃源岩产烃率图版的统一建立,提高了生烃量的计算精度.通过对独立的油气运聚单元的解剖,初步解决了运聚系数的定量取值难题.类比法是通过对123个不同类型刻度区的解剖,建立了类比评价的数据库系统,使类比功能有了很大发展,除提高了资源量预测精度外,还能对油气资源在空间分布、品位等方面进行预测.统计法的应用功能也有了新的扩展.

关键词: 油气资源, 评价方法, 研究进展, 成因法, 类比法, 统计法