莘县凹陷堂邑洼陷古近系沙三段烃源岩生烃潜力评价  

Hydrocarbon generation potential of the Palaeogene Es_3 source rock in the Tangyi subsag of the Shenxian sag

作　　者：曹宏明[1,2] 程子翔[3] 程伟 谢彩虹[2] 曹鉴华[1] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中石化中原油田分公司,河南濮阳457001 [3]中国石油大学(北京),北京102249 [4]中石化华东分公司,江苏扬州225007

出　　处：《特种油气藏》2013年第2期56-59,153,共4页Special Oil & Gas Reservoirs

基　　金：国家重大专项课题"东濮凹陷油气富集规律与增储领域"(2011ZX05006-004)

摘　　要：以莘县凹陷堂邑洼陷钻井暗色泥岩为研究对象,利用有机碳、生烃潜量和氯仿沥青"A"含量、干酪根显微组分、同位素组成和镜质体反射率等分析化验资料,采用有机质丰度、类型和成熟度指标,对烃源岩的生烃潜力进行了评价。结果表明:该洼陷暗色泥岩发育,沙三段下段烃源岩有机质丰度较高,为中等—好烃源岩,具有陆源沉积混合母质的特征,表现为Ⅱ2—Ⅱ1型干酪根;综合分析烃源岩大约在2 950 m开始生烃,埋藏深度4 000 m以上达到生烃高峰。此研究可为该区下一步勘探和井位部署提供参考。Geochemical analysis data(organic carbon,chloroform bitumen 'A',kerogen maceral,isotope,vitrinite reflectance,etc.) are employed to evaluate the potential of hydrocarbon generation by organic matter abundance,type and thermal maturity for the Es3 dark mudstone in the Tangyi subsag of Shenxian sag.The result indicates that dark mudstone had developed in this subsag;the abundance of organic matter is high in the lower member of Es3 source rocks,belonging to medium-good source rock,showing characteristics of hybrid parent materials of terrigenous deposit and Type Ⅱ2-Ⅱ1 kerogen;holistic approach indicates that the source rock started to generate hydrocarbon from 2 950 m and reached generation peak from 4 000 m downward.

关 键 词：烃源岩评价 有机质丰度 有机质类型 有机质成熟度 莘县凹陷 堂邑洼陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]