Integrated core study of a fractured metamorphic HC-reservoir; Kiskunhalas-NE, Pannonian Basin
Integrated core study of a fractured metamorphic HC-reservoir; Kiskunhalas-NE, Pannonian Basin
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DOI：
10.1007/s40328-012-0008-y
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发表时间：
2013-03-01
影响因子：
1.4
通讯作者：
Foeldes, Tamas
中科院分区：
文献类型：
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作者：
Nagy, Agnes;Toth, Tivadar M.;Foeldes, Tamas
KIHA-NE变质块体中共存岩性的岩石学解释表明，四个岩石单元中的两个可能在油气的运移和/或储存中起重要作用。强烈剪切的糜棱岩样品具有明显的断裂系统，具有明显的石油一次运移证据。在综合岩心研究过程中，除了岩石学方法外，还对代表性样品进行了3D CT扫描以及破坏性和非破坏性岩石机械处理并进行了评价。根据这些结果，我们可以说，岩石学上不同的岩石类型具有显着不同的脆性行为。正向糜棱岩具有中等各向异性和断裂倾向。然而，分形维数和累积裂缝长度值并不意味着复杂和连通的裂缝系统的形成。石墨质片麻岩糜棱岩具有高的各向异性和大的可能连通的断裂系统，其工作投资比任何其他岩石类型低得多。
The petrologic interpretation of the coexisting lithologies in the KIHA-NE metamorphic block suggests that two of the four rock units may have a significant role in the migration and/or storage of hydrocarbons. The strongly sheared mylonite samples exhibit remarkable fracture systems with clear evidence of one-time oil migration. In the course of the integrated core study, in addition to the petrological methods, 3D CT scans and destructive and non-destructive rock mechanical treatments were fulfilled on representative samples and evaluated. On the basis of the results we can state that the petrologically different rock types have remarkably different brittle behaviours. The orthognesis mylonite is characterised by moderate anisotropy and fracture tendency. However, the fractal dimension and cumulative fracture length values do not suggest the formation of complicated and connected fracture systems. High anisotropy and a large and possibly communicating fracture system characterise the graphitic gneiss mylonite, achieved by a much lower work investment than for any other rock type.