王言英,李永军
WANG Yan-ying1,2

• 1:中国地质大学
• 2:中国地质大学 北京100083
• 3:大庆油田有限责任公司
• 4:黑龙江大庆163453

摘要(Abstract)：

由天然气碳同位素特征,可以得出西部斜坡区存在着大量的油型气,它们主要分布在泰康隆起带上。油气同层产出特征表明,西部斜坡地区油溶释放气应是油型气的重要组成部分。齐家—古龙凹陷与西部斜坡区之间1000余米的高差是油溶气释放的重要条件。计算结果表明,西部斜坡区的油溶释放气量是可观的,1 m3原油从齐家—古龙凹陷运移至西部斜坡地区可释放出20~30 m3的天然气,且由东向西油溶气释放量逐渐增大。油溶释放气量可占到源岩游离相天然气排出量的12.82%,应是西部斜坡区天然气成藏的重要组成部分。西部斜坡区油溶释放气可以和游离气混合成藏,也可以与生物气混合成藏。泰康隆起带应是油溶释放气成藏的有利地区。
According to isotope characteristics of gas,this paper considered there is a lot of oil-type gas in Western Slope,they distribute on Taikang uplift zone.The characteristics of oil and gas produced in the same layer indicates that the gas released from oil is the important part of oil-type gas in Western Slope.About 1000m depth displacement between Qijia-Gulong sag and Western Slope is the important condition for gas to release from oil.Calculation results indicate the amount of gas to released from oil is considerable.1 m3 oil migrating from Qijia-Gulong sag to Western Slope can release 20-30 m3 gas.The amount of gas released from oil increases from east to west,it can be 12.82% of gas in free phase expelled from source rock,it is important part of gas accumulation in Western Slope.The gas released from oil can mix with gas in fee phase and form gas reservoirs.It can mix with biogas and form gas reservoirs,too.Taikang uplift zone is the favorable area for gas released from oil to accumulate and form gas reservoirs.

关键词(KeyWords)： 西部斜坡区;油溶气;释放;成藏;齐家-古龙凹陷;泰康隆起
Western Slope;gas dissolving in oil;release;accumulation;Qijia-Gulong sag;Taikang uplift

Abstract:

Keywords:

基金项目(Foundation): 国家973重点研究项目:高效大气田形成与分布研究(2001CB209104)

作者(Author): 王言英,李永军
WANG Yan-ying1,2

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