用生烃潜力法研究松辽盆地北部中浅层烃源岩资源潜力  

Research on resource potential of middle-shallow source rocks of the northern part of Songliao Basin with hydrocarbon-generation potential method

作　　者：马中振[1] 庞雄奇[2] 吴河勇[3] 戴国威[3] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油大学盆地与油藏研究中心,北京102249 [3]大庆油田勘探开发研究院,黑龙江大庆163712

出　　处：《中国石油大学学报（自然科学版）》2009年第4期27-32,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家'973'重点基础研究发展规划项目(2006CB202300)

摘　　要：利用松辽盆地北部探井的热解和有机碳数据，采用生烃潜力法对盆地北部中浅层4套主力烃源岩层（青一段、青二、三段、嫩一段和嫩二段）的排烃特征及资源潜力进行研究。结果表明：4套烃源岩随年龄变小排烃门限深度变浅，青一段为1．3km、青二、三段为1．2km、嫩一段为1．0km、嫩二段为0．95km；烃源岩排烃高峰期较晚，青一段、嫩一段和嫩二段烃源岩在晚白垩世明水组沉积期达到排烃高峰，青二、三段烃源岩则在古近纪四方台组沉积期和泰康组沉积期分别达到排烃高峰；4套烃源岩现今累积排烃量达到了487．1×10^8t，远景资源量为97．4×10^8--194．8×10^8t，展现了巨大的资源勘探潜力。Based on the data of pyrolysis and total organic carbon, the hydrocarbon expulsion characteristics and resource po- tential of four main source rocks of K1 qn1 , K1qn2 ＋3, Kjn1 and K1 n2 in middle-shallow section in the northern part of Songli- ao Basin were studied by hydrocarbon-generation method. The results show that the depth of hydrocarbon expulsion threshold decreases with the decrease of geological age of the four source rock formations, and the depth of hydrocarbon expulsion threshold of K1 qn1 , K1 qn2 ＋3, K1n1 and K1 n2 are 1.3, 1.2, 1.0 and 0. 95 km respectively. K1 qn1 , K1 n1 and K1 n2 source rock formations reached their hydrocarbon expulsion peak at late Cretaceous Mingshui group sediment period while K1qn2 and K1 qn3 got those expulsion peaks at Paleoclimatic Sifangtai group and Taikang group sediment period respectively. The accu- mulated hydrocarbon expulsion amount of the four Source rock layers are 487.1 ×10^8 t. The prospective resource extent is a- bout 97.4 ×10^8 - 194.8 ×10^8 t , which shows great resource exploration potential.

关 键 词：松辽盆地 排烃门限 生烃潜力法 排烃特征 资源潜力 

分 类 号：TE155[石油与天然气工程—油气勘探]