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中国东北部晚中生代断陷盆地模式在松辽深部煤成气预测中的可能应用
作者单位:Wuhan College of Geology,Wuhan 430074
摘    要:经地震探测和地质分析,松辽深部晚中生代断陷盆地与其周围地区J_3—K_1的断陷盆地在地质结构和成盆期均具有相似性,同属东北亚晚中生代断陷盆地系。作者认为,应用其周围同类型断陷盆地模式对松辽深部煤成气远景的预测和生油潜力的判断具有重要价值,同样也适用于深埋于下辽河第三纪坳陷之下的晚中生代盆地成气远景的预测。

关 键 词:断陷盆地系  晚中生代  煤成气  松辽盆地  东北亚

THE POSSIBLE APPLICATION OF THE MODEL OF THE LATE MESOZOIC FAULT BASIN IN NORTHEAST CHINA IN THE PREDICTION OF DEEP GAS FROM COAL IN SONGLIAO AREA
Authors:Li Sitian  Wu Chonglong
Abstract:The authors have suggested a concept of the Late Mesozoic fault basin system in Northeast Asia and have also confirmed that the Songliao basin group is a part of the system. Subsequently, the fault basin model suggested can be used in the prediction of deep gas from coal in Songliao area. The prediction of the deep gas-producing source rocks can be proceeded by the sedimentary parameters of the model. It has been verified that this kind of the basin usually contains tremendously thick coal seams. At the same time, the three-dimentional model of the fault basin facies can be used to help the interpretation of the seismic data, the division of the facies zones and the determination of the volume of the source rocks. According to the characteristics of the organism changes in the fault basin and the settling and heating history of Songliao basin, it has been worked out that the deep Mesozoic coal in both Songliao and Xialiao basins has entered a stage of high rate gas production.
Keywords:fault basin  system  Late Mesozoic  deep gas from coal  Songliao basin  Northeast Asia  
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