松辽盆地南部深层火山岩气藏成藏主控因素

Key factors controlling the accumulation of volcanic gas reservoirs in the deep part of Southern Songliao Basin

总结并分析松辽盆地火山岩气藏的成藏主控因素.结果表明:虽然六大成藏要素(生成、储集、盖层、运移、圈闭、保存)在天然气的成藏中缺一不可,但对松辽盆地深层,源岩条件(主要是深层气源岩的发育和分布)和储集条件(优质火山岩储层的发育和分布)对天然气的富集、成藏更为重要.在构造运动较为剧烈的东南断陷带,断裂制约着原生气藏的破坏和次生气藏的形成.各种成藏要素受到断裂体系及其演化或多或少、或直接或间接的控制.可以说,断裂体系不仅控陷,而且控源、控生、控储、控运、控聚、控保,因而是影响区内火山岩气藏成藏最为根本、关键的制约因素.

This paper is to summarize and analyze key factors of volcanic gas accumulation.The results showed that although the six elements of accumulation(source rock,reservoir,cap rock,migration, trap and preservation)in the gas reservoir are indispensable,in terms of the deep formation in Songliao Basin,source rock conditions(mainly the development and distribution of deep gas source rocks)and reservoir conditions(development and distribution of excellent volcanic reservoirs)are even more important for the enrichm...