松辽盆地青山口组湖相灰岩特征及油气地质意义  

Lacustrine limestone characteristics and its petroleum geology implication in Qingshankou formation of Songliao Basin

作　　者：杨玉芳[1,2] 钟建华[1,3] 黄李荣 司维柳[5] 陈鑫[3] 

机构地区：[1]中科院广州地球化学研究所,广州510640 [2]中科学院研究生院,北京100039 [3]中国石油大学,山东东营257061 [4]中石化西北油田公司,新疆乌鲁木齐830011 [5]中油大港油田公司,天津大港300280

出　　处：《特种油气藏》2010年第3期14-18,共5页Special Oil & Gas Reservoirs

基　　金：重点基础研究"973"项目(2006CB202406);教育部博士点基金(20050425515)部分成果

摘　　要：松辽盆地中央坳陷带龙虎泡-大安阶地与西部泰康隆起的交界处青山口组(Qn2+3)发现了特殊的淡水碳酸盐岩沉积——核形石灰岩与叠层石灰岩。典型的核形石产在杜30井高二砂岩组,典型的叠层石产在杜402井高三砂岩组。通过对此种灰岩的岩电特性、结构组分、沉积特征和主要岩石类型进行的系统性研究,进而对其沉积环境提出了初步认识。该区湖相灰岩的平面分布规律及生油、储油物性研究表明,泰康地区大面积的湖相灰岩具有较强的生油能力,且产在大型油气田的储集岩系之中,对今后新类型储层的寻找具有重要实际意义。Fresh water carbonate sedimentation,oncolitic limestone and stromatolithic limestone,had been found in Qingshankou formation (Qn2+3) at the juncture of Longhupao-Da’an terrace and west Taikang uplift in the central depression of Songliao Basin.Typical oncolite was found in the second member of Gaotaizi formation in Well Du 30,and typical stromatolite was found in the third member of Gaotaizi formation in Well Du 402.Such limestone has been systematically studied in respects of litho-electro property,composition,sedimentary characteristics and rock types on which basis a preliminary understanding of sedimentary environment is presented.The study of the distribution of lacustrine limestone and petroleum generation and preservation in this area shows that the extensive lacustrine limestone in Taikang had a high oil-generating potential and occurred in a large reservoir rock system,therefore is of great significance to exploration of new type of reservoirs.

关 键 词：松辽盆地 青山口组二 三段 核形石层 叠层石层 形成环境 相带迁移 

分 类 号：TE121[石油与天然气工程—油气勘探]