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苏北盆地高邮凹陷热演化史研究

刘小平,王俊芳,李洪波

JOURNAL OF OIL AND GAS TECHNOLOGY(JOURNAL OF JIANGHAN PETROLEUM INSTITUTE)（2005）

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Abstract
运用镜质体反射率(R.)和磷灰石裂变径迹(AFT)两种古温标,对苏北盆地高邮坳陷进行了古地温梯度反演.结果表明,该区平均古地温梯度为40.8～41.3℃/km,高于现今平均地温梯度.同时利用磷灰石裂变径迹动力学模型进行了热演化史的正演模拟,高邮凹陷K2t时期至E2s2时期平均古地温梯度近于41.0℃/km;之后随着构造沉降的停顿,平均地温梯度逐渐降低,Ny期至今地温梯度近于29.0℃/km.模拟结果为该区生排烃史及油气成藏史研究奠定了基础.
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Key words
geothermal evolution history,subei basin,gaoyou sag
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