摘要
概述了欧亚大陆稠油的基本特征,稠油已成为近几年主要的采油后备资源。研究了稠油在欧亚大陆含油区的空间分布特点。指出,最稠的原油分布在东欧及中国西部。分析了原油粘度随深度而变化的规律后指出,在1 000～2 000 m的深度范围内原油粘度最大,随着埋深的增大,原油粘度降低。研究了原油粘度与含油层年代的关系后指出,中生代地层中的原油粘度最高,而元古代地层中的原油粘度最低。总的来说,按物理化学性质,欧亚大陆稠油是重质的、含硫的、高胶质的、高沥青质且石蜡含量低,初馏点为200℃.
The basic features of heavy oil in Eurasia are reviewed as major backup resources for oil production in recent years. The spatial distribution of heavy oil domain in Eurasia is studied. The most heavy oils are distributed in East Europe and the western China. The rule of change of crude oil viscosity with depth shows that the highest viscosity of crude oil ranges mainly from 1000 m to 2000 m in depth. The viscosity of crude oil is declined with decrease of the buried depth. Following the relationship between the viscosity and the geological period of oil-bearing strata, this paper suggests that the highest viscosity of crude oils is distributed in Mesozoic strata, while the lowest viscosity of crude oils is in Proterozoic strata. Generally speaking, it is concluded that heavy oils in Eurasia are heavy, sulfurbearing, highly colloidal and highly bituminous, with low paraffin content and initial boiling point of 20℃.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第3期375-382,共8页
Xinjiang Petroleum Geology
关键词
欧亚大陆
稠油
原油化学性质
埋深
含油层年代
空间分布
Eurasia
heavy oil
petrochemistry
buried depth
oil-bearing stratum
geological period
spatial distribution
