松辽盆地北部古龙-常家围子地区登娄库组深盆气藏形成的可能性  

Possibility of formation of deep basin gas reservoirs in the Denglouku Formation of Gulong-Changjiaweizi region,northern Songliao Basin

作　　者：张雷[1] 张学娟[1] 卢双舫[1] 杨志如 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油东方地球物理公司,河北涿州072751

出　　处：《石油与天然气地质》2013年第4期441-449,共9页Oil & Gas Geology

基　　金：黑龙江省青年科学基金项目(QC2012C127);黑龙江省教育厅科学技术研究项目(12521061)

摘　　要：松辽盆地北部古龙-常家围子地区登娄库组的油气勘探程度较低,尤其是对致密砂岩气的研究尚处于起步阶段。为了证实古龙-常家围子地区登娄库组深盆气藏形成的可能性,文章从烃源岩、储层条件以及保存条件等方面系统分析了该地区登娄库组天然气成藏地质条件,并与深盆气藏成藏的基本条件进行对比。研究表明,古龙-常家围子地区登娄库组二段及其邻近地层具备深盆气藏形成的有利地质条件,即低孔-低渗的致密砂岩储层、充足持续的气源条件、烃源岩与储集层紧密叠置的接触关系以及稳定平缓的构造背景,是松辽盆地北部深盆气藏可能形成的有利地区。在古龙-常家围子地区下一步天然气勘探工作中,以登娄库组二段气源岩有效生气范围及周边地区为重点区域,以登二段及其邻近地层为重点层位,将有机会获得深盆气藏的勘探突破。The Denglouku Formation in Gulong-Changjiaweizi region is still immature in petroleum exploration, especially for tight sand gas. Based on a systematic analysis of gas accumulation conditions in respects of source rock, reservoir and preservation and a comparison with the basic accumulation conditions of deep basin gas reservoir, we discussed the f pos- sibility of formation of deep basin gas reservoir in the Denglouku Formation of Gulong-Changjiaweizi region. The results show that the 2na member of Dengkouku Fm（ K1 d2） and its conterminous layers in Gulong-Changjiaweizi region have fa- vorable geological conditions for the accumulation of deep basin gas, including tight sandstone reservoirs with low porosity and low permeability, abundant and continuous gas charging, stable and gentle structural background as well as close su- perimposition of source rocks and reservoirs. Therefore, the Gulong-Changjiaweizi region could be favorable for accumula- tion of deep basin gas in the northern Songliao Basin. The K1 d2 and its conterminous layers within the effective gas genera- tion area of KldEsource rock and its periphery may be the major target for future deep basin gas exploration.

关 键 词：成藏条件 深盆气藏 登娄库组 古龙-常家围子地区 松辽盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]