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An integrated platform for thermal maturity assessment of polyphase, long-lasting sedimentary basins, from classical to brand-new thermal parameters and models: An example from the on-shore Baltic Basin (Poland)

机译:从经典到全新的热参数和型号的多相,长期沉积盆地的热成熟度评估集成平台:来自岸上波罗的海盆地(波兰)的示例

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摘要

Paleo-thermometers in sedimentary basins often drive to misleading thermal modelling when applied alone or only on potentially productive Paleozoic source rocks. Different paleo-thermal and thermo-chronological data have been used as constraints to model the Silurian to Cenozoic succession of a recently drilled well in the onshore portion of the Baltic Basin, in northern Poland. This dataset provides an integrated platform for thermal maturity assessment contributing to the highly debated reconstruction of the thermal history of the Baltic Basin in the last decade. The well stratigraphy consists of a Lower Paleozoic marine clayey and arenaceous/calcareous succession, about 1000 m thick that is unconformably overlain by a 2000 m thick Permian to Cenozoic sequence, developed in a continental to shallow marine environment. Optical microscopy, FT-IR and Raman spectroscopy analysis of organic matter have been coupled with (U-Th)/He data to produce a robust vitrinite reflectance profile and constrain the ID thermal modelling of the well. In addition, such a thermal maturity profile was validated by an independent thermal modelling calibrated by the smectite illitization kinetics. Both models identify high heat flow conditions (up to 1.7 HFU) at the end of Mesozoic. The Lower Paleozoic succession entered the late oil window of HC generation during this last heating event.
机译:沉积盆地的古温度计经常在单独或仅在潜在生产的古生代源岩上施用时驱动误导热建模。不同的古热和热时间数据被用作建立在波兰北部波兰人盆地的陆上部分最近钻井的硅子井的限制。该数据集提供了一个综合平台,用于热成熟度评估,促进了过去十年中波罗的海盆地热历史的高度辩论重建。该井地层由较低古生代海洋粘土和植物/钙质连续组成,大约1000米厚度,由2000米厚的二叠纪到新生代序列,在大陆到浅海环境中发展,这是一个不可形成的覆盖物。有机物质的光学显微镜,FT-IR和拉曼光谱分析已经与(U-TH)/ HE数据相耦合,以产生鲁棒蒸料反射率曲线并限制井的ID热建模。此外,通过蒙脱石ilditization动力学校准的独立热建模来验证这种热成熟度曲线。两种模型在中生代末端识别高热流条件(高达1.7 HFU)。较低古生代继承进入了最后一次加热事件期间HC发电的后期油窗。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2158-2158|共1页
  • 作者

    S. Corrado; A. Schito; C. Romano;

  • 作者单位

    Dipartimento di Scienze Sezione di Scienze Geologiche Universita 'Roma Tre ' Largo San Leonardo Murialdo l Roma 00146 Italy;

    Dipartimento di Scienze Sezione di Scienze Geologiche Universita 'Roma Tre ' Largo San Leonardo Murialdo l Roma 00146 Italy;

    Dipartimento di Scienze Sezione di Scienze Geologiche Universita 'Roma Tre ' Largo San Leonardo Murialdo l Roma 00146 Italy;

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  • 正文语种 eng
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