CAJ | 학술논문

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。
송료분지북부고룡-상가위자지구등루고조적유기감탐정도교저，우기시대치밀사암기적연구상처우기보계단。위료증실고룡-상가위자지구등루고조심분기장형성적가능성，문장종경원암、저층조건이급보존조건등방면계통분석료해지구등루고조천연기성장지질조건，병여심분기장성장적기본조건진행대비。연구표명，고룡-상가위자지구등루고조이단급기린근지층구비심분기장형성적유리지질조건，즉저공-저삼적치밀사암저층、충족지속적기원조건、경원암여저집층긴밀첩치적접촉관계이급은정평완적구조배경，시송료분지북부심분기장가능형성적유리지구。재고룡-상가위자지구하일보천연기감탐공작중，이등루고조이단기원암유효생기범위급주변지구위중점구역，이등이단급기린근지층위중점층위，장유궤회획득심분기장적감탐돌파。
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 2nd member of Dengkouku Fm (K1d2) 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 K1 d2 source rock and its periphery may be the major target for future deep basin gas exploration .