关键词: 油气资源, 评价方法, 研究进展, 成因法, 类比法, 统计法

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