辽河油区稠油分类及其储量等级划分

Heavy oil classification and its reserves classification in Liaohe oil province

以原油在油层中的流动状态及工业性开发潜力为出发点，根据辽河油区５个油田１７个稠油区块２５５个稠油样品分析结果，采用地层温度下脱气原油粘度为主要指标，地面原油密度作为第二指标，将稠油分为常规稠油、重稠油、特稠油和超稠油四类。同时还运用了与开发效果密切相关的深度及油层产状等因素将稠油分为浅层、中浅层、中深层和深层四类及块状稠油和层状稠油两类。最终结合现有采油工艺水平，将稠油储量分为一等储量（已开采储量）、二等储量（可开采储量）和三等储量（难开采储量）。从而初步实现了新增稠油储量区块在申报中不必块块试采的目的，并为稠油油藏的合理开发提供了可靠的依据。

Based on flow state and commercial developing potential of crude oil in the formation and analysises of 255 heavy oil samples from 17 heavy oil blocks of 5 oil fields, taking the viscosity of degassed crude under formation temperature as the main index, and the density of dead oil as the secondary index, heavy oils are classified into four types, such as conventional heavy oil, heavy oil, extra heavy oil and super heavy oil. Furthermore, according to the factors, i.e. depths and reservoir occurrences which are closely related to development result, heavy oils are classified into shallow, mid shallow, mid deep,deep layer four types; and massive, layered heavy oil two types. At last, combining the available oil production technology, heavy oil reserves are classified into first class reserves (recovered), second class reserves (recoverable) and third class reserves (difficult to recover).So that it is unnecessary to pilot production in every block when reporting of reserve application of new blocks of heavy oil. This paper provides reliable basis for rational development of heavy oil reservoir.