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.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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)
关键词
松辽盆地
排烃门限
生烃潜力法
排烃特征
资源潜力
Songliao Basin
hydrocarbon expulsion threshold
hydrocarbon-generation method
hydrocarbon expulsion char- acteristics
resource potential
