摘要
根据颗粒荧光光谱分析的技术特点,将其应用于准噶尔盆地南缘玛河气田的油气成藏演化研究中,取得了良好的应用效果。研究表明,玛河气田早期存在成熟原油的充注,并形成一定规模的古油藏,现今的凝析油气藏是由于后期大量高成熟天然气的注入,导致原先的古油藏发生"蒸发分馏"作用改造而形成的;现今的气水界面也是古油水界面在保持古油藏布局的基础上经过后期的逐渐向上调整而形成的。
The explorations and practices show that quantitative grain fluorescence technique （QFT） has unique advantages and characteris- tics in identifying the type of reservoir hydrocarbon inclusions and palaeo-fluid, detecting the migration pathways of oil and gas, and defin- ing the oil-water contact. In this paper, the QFT is applied to the study of hydrocarbon accumulation and evolution in Mahe gasfield of Southern margin of Junggar basin, and good effects have been obtained. The research shows that there was mature crude oil filling in the early stage and a certain scale of paleo-oil pools had been formed in Mahe gasfield, and nowadays the condensate gas reservoir was formed by the fact that a great amount of high mature gas charging in late stage led to ＂Evaporating fractionation＂ of the original palaeo-oil pools. Meanwhile, the present gas-water contact was also shaped by late adjusting upward of paleo-oil-water contact on the basis of keeping the patterns of original paleo-oil pools.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期316-319,共4页
Xinjiang Petroleum Geology
基金
国家科技重大专项(2011ZX05003-001
2011ZX05003-005)
国家973项目(2011CB201106)
关键词
准噶尔盆地
玛河气田
古油藏
颗粒荧光光谱分析技术
油水界面
蒸发分馏
成藏演化
Junggar basin
Mahe gas field
paleo-oil pool
quantitative grain fluorescence technique
oil-water contact
evaporating fractionation
hydrocarbon Accumulation and Evolution
