松辽盆地南部泉头组-嫩江组热演化史研究  

Research on Thermal Evolutionary History During the Period of Quantou-Nenjiang Formation in the South of Songliao Basin

作　　者：郭巍[1] 方石[1] 刘招君[1] 苏飞[1] 

机构地区：[1]吉林大学地球科学学院,吉林长春130026

出　　处：《石油天然气学报》2009年第3期1-6,共6页Journal of Oil and Gas Technology

基　　金：国家重大专项课题(ZP-Y-01)

摘　　要：根据钻井测温和镜质体反射率资料,在现今地温场分析的基础上,开展了有机质热演化和热史模拟研究。热史模拟结果表明,火石岭组古地温较高,沙河子组时期有一个明显的降温,营城组晚期-登娄库组时期地温缓慢回升,青山口组时期古地温明显回升,姚家组时期以后开始降温,明水组的降温速率最大。Ro史反演表明,嫩江组期末,青一段烃源岩热演化达到成熟期,嫩江组一段、二段烃源岩达到低成熟期。明水组期末,青一段烃源岩热演化为成熟晚期,嫩江组一段、二段烃源岩达到成熟期。According to the materials of drilling temperature and vitrinite reflectance, based on analyzing modern geothermal field, the thermal evolution of organic matters and modeling of thermal history were studied. Modeling results of thermal history indicate, palaeogeothermal of Huoshiling Formation is high, but to the sedimentary period of Shahezi Formation, there is an obvious temperature drop. Palaeogeothermal slowly rises again from the late period of Yingcheng Formation to Denglouku Formation, then to Qingshankou Formation, the palaeogeothermal obviously rises again, after Yaojia Formation, it begins to drop, and the rate of temperature drop of Mingshui Formation is the biggest. Inversion of vitrinite reflectance indicate, to the late period of Nenjiang Formation, the thermal evolution of source rocks of the 1st Member of Qingshankou Formation comes to maturity stage, and source rocks of the 1st and 2nd Member of Nenjiang Formation comes to low maturity stage. To the late period of Mingshui Formation, the thermal evolution of source rocks of the 1st Member of Qingshankou Formation comes to late stage of maturity, and source rocks of the 1st and 2nd Member of Nenjiang Formation comes to maturity stage.

关 键 词：松辽盆地南部 热演化史 现今地温场 地温梯度 镜质体反射率 

分 类 号：P618.13[天文地球—矿床学]