This study investigates the charge history of the Oligocene – Lower Miocene Asmari Formation reservoir at three oilfields (Karanj, Paranj and Parsi) in the southern Dezful Embayment, SW Iran, from microthermometric analyses of hydrocarbon‐bearing fluid inclusions. The Asmari Formation reservoir was sampled in seven wells at depths of between 1671.5 and 3248.5 m; samples from three of the wells were found to be suitable for fluid inclusion analyses. The samples were analyzed using an integrated workflow including petrography, fluorescence spectroscopy, Raman microspectroscopy and microthermometry. Abundant oil inclusions with a range of fluorescence colours from near‐yellow to near‐blue were observed. Based on the fluid inclusion petrography, fluorescence and microthermometry data, two episodes of oil charging into the reservoir were identified: 7 to 3.5 Ma, and 3.5 to 2 Ma, respectively. Fluid inclusions in general homogenized at temperatures between 112 and 398°C and with salinities of 14 to 23 wt.% NaCl equivalent. Based on the burial history, the Albian Kazhdumi and Paleogene Pabdeh Formation source rocks in the study area have not reached the gas generation window. The abundant fluid inclusions containing gas‐liquid phase observed in the Asmari samples studied are therefore inferred to have been derived from secondary oil‐to‐gas cracking which resulted from Late Pliocene uplift.

中文翻译：

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卡兰吉，帕兰吉和帕尔西油田的油气迁移和充注历史，南部采空区，扎格罗斯褶皱和冲断带，西南伊朗

这项研究通过对含烃流体包裹体的显微热分析，研究了伊朗西南部Dezful Embayment南部三个油田（Karanj，Paranj和Parsi）的渐新世–下中新世Asmari组的储层历史。阿斯马里组储层在1671.5至3248.5 m之间的7口井中进行了采样；发现来自三口井的样品适合进行流体包裹体分析。使用包括岩相学，荧光光谱法，拉曼显微光谱法和显微热分析法在内的集成工作流程对样品进行分析。观察到大量油包裹体，其荧光颜色范围从近黄色到近蓝色。根据流体包裹体岩相学，荧光和显微热成像数据，确定了两次向油层注油的情况：7至3.5 Ma和3.5至2 Ma。通常，流体夹杂物在112至398℃之间的温度下均质化，并且盐度为14至23wt。％的NaCl当量。根据埋葬历史，研究区的Albian Kazhdumi和Paleeogene Pabdeh组烃源岩尚未达到产气窗口。因此，推断在研究的阿斯马里样品中观察到的含有气相的大量流体包裹体，是由于上新世晚期隆升造成的二次油气裂化所致。研究区的Albian Kazhdumi和古近纪Pabdeh组烃源岩尚未达到产气窗口。因此，推断在研究的阿斯马里样品中观察到的含有气相的大量流体包裹体，是由于上新世晚期隆升造成的二次油气裂化所致。研究区的Albian Kazhdumi和古近纪Pabdeh组烃源岩尚未达到产气窗口。因此，推断在研究的阿斯马里样品中观察到的含有气相的大量流体包裹体，是由于上新世晚期隆升造成的二次油气裂化所致。