Insights from fluid inclusions, thermal and PVT modeling for paleo-burial and thermal reconstruction of the Cordoba petroleum system (NE Mexico)
Insights from fluid inclusions, thermal and PVT modeling for paleo-burial and thermal reconstruction of the Cordoba petroleum system (NE Mexico)
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DOI：
10.1016/j.marpetgeo.2010.01.020
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发表时间：
2011-04-01
影响因子：
4.2
通讯作者：
Swennen, Rudy
中科院分区：
文献类型：
--
作者：
Ferket, Helga;Guilhaumou, Nicole;Swennen, Rudy
科尔多瓦石油系统（墨西哥东北部）的碳酸盐岩储层经历了多相变形历史，使石油地质变得复杂化。该区域从被动边缘和前陆环境演化为拉拉米德褶皱冲断带（FTB），随后埋藏在第三纪-第四纪韦拉克鲁斯盆地下方，而后者又经历了压变形。通过 FTB 和邻近前陆的不同区域重建古埋藏（侵蚀）和古热性是一项具有挑战性的任务，因为经典校准工具无法区分几种运动学和热模型。在这项研究中，对科尔多瓦台地西部碳酸盐岩的详细成岩作用和流体包裹体（FI）分析结果有助于限制古热性。结合显微测温、同步加速器 FTIR 分析和同生烃-水 FI 的 PVT 建模还可以计算绝对压力。用有机成熟度参数、井底温度或 FI 温度校准的热模拟练习表明，如果不控制古侵蚀，模型结果可能会产生误导。 (C) 2010 Elsevier Ltd. 保留所有权利。
Carbonate reservoirs in the Cordoba petroleum system (NE Mexico) passed through a multiphase deformation history complicating the petroleum geology. The area evolved from passive margin and foreland setting to Laramide fold and thrust belt (FTB) that was subsequently buried below the Tertiary-Quaternary Veracruz Basin, which in turn underwent transpressional deformation. Reconstruction of paleo-burial (erosion) and paleo-thermicity through the different zones of the FTB and adjacent foreland is a challenging task since classical calibration tools fail to discriminate between several kinematic and thermal models. In this study results from detailed diagenetic and fluid inclusion (FI) analyses on carbonates from the western part of the Cordoba Platform helped constraining paleo-thermicity. Combined microthermometry, synchrotron FTIR analyses and PVT modeling of cogenetic hydrocarbon-aqueous FI allowed also calculation of absolute pressures. Thermal modeling exercises calibrated with organic maturity parameters, bottom-hole temperatures or temperatures from FI demonstrate that without controlling also paleo-erosion the model results may be misleading. (C) 2010 Elsevier Ltd. All rights reserved.