常规与非常规油气资源评价的总体思路、方法体系与关键技术

General philosophy,method system and key technology of conventional and unconventional oil & gas resource assessment

资源评价是油气勘探开发活动中一项非常重要的基础性研究工作。在回顾历次油气资源评价背景、采用方法和主要做法基础上,分析了新形势下油气资源评价面临需求、评价对象及主要任务,阐述了油气资源评价的内涵、特点与发展方向。重点论述了第四次油气资源评价的总体思路,提出"四步走"评价流程,建立常规、非常规2类资源的评价方法体系。针对新的评价需求和评价对象,发展了烃源岩精细评价技术、刻度区精细评价技术、三维油气运聚模拟技术、缝洞型碳酸盐岩运聚模拟技术、分级资源丰度类比评价技术、小面元容积法评价技术、EUR类比评价技术等关键评价技术,研发形成新一代油气资源评价软件系统(HyRAS2.0),实际应用效果良好。

Resource assessment is a very important fundamental research work in petroleum exploration development.Previous oil ＆ gas resources assessment methods and practices are systematicly reviewed in this paper.Based on the latest progresses in exploration and geological understandings, this paper analyses the production requirements,evaluation objects, technology status and the confront main task of resource assessment under new circumstance, clarifies the connotation, characteristics and future development direc- tion of resources assessment.On this basis, the paper elaborates the general philosophy, ＂Four Steps＂ as- sessment process and method system of the 4th Round Oil ＆ Gas Resources Assessment.According to the new assessment requirements and different types of evaluation objects,8 key evaluation techniques have been developed, which includes fine evaluation technique of hydrocarbon source rocks, fine evaluation tech- nique of the ＂Calibrated Units＂,3D simulation technique of oil ＆ gas migration and accumulation, simula- tion technique of fracture-cavity type carbonate, grading resource abundance analogy technique, cell volu- metric method rated evaluation technique, EUR analogy evaluation technique, and a new generation of oil gas resources assessment system（HyRAS2.0）.