松辽盆地北部升深2-1区块营城组火山岩气藏成藏条件分析

Accumulation anlysis of volcanic gas reservoir in Yingcheng formation of Block Shengshen2-1 of Northern Part of Songliao Basin

通过对松辽盆地北部深层烃源岩、储盖层、圈闭等各项成藏关键因素分析,认为松辽盆地北部断陷期湖相泥岩和煤岩是重要的生烃层系,以登二段、泉一、二段和青一段三套区域盖层分开了四套天然气生储盖组合。升深2-1区块营城组三段火山岩天然气藏,其主要烃源岩为沙河子组煤层,储层为营城组三段火山岩,盖层为泉一、二段滨浅湖相泥岩的含边底水的岩性-构造气藏。

According to Analysis of forming condations,we got a conclusion,in northern part of Songliao basin,it is lacustrine Shale rock and coal of Shahezi formation that are resource rock in northern part of Songliao basin.Four sets of Source reservoir cap assemblage are separated by three regional cap rock those are K1d1＋2、 K1q1＋2 and K1qn1.Block shengshen2-1 gas pool,which main resource rock is coal of Shahezi formation,reservior is volcanic rock of K1yc,cap rock is lacustrine Shale of K1q1＋2,is a lithologic-structural gas pool with bottom water.