Trapping pressure estimation of single gaseous inclusion using PVT simulation and its preliminary application in NE Sichuan, China
Trapping pressure estimation of single gaseous inclusion using PVT simulation and its preliminary application in NE Sichuan, China
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PVT模拟单一气态包裹体捕获压力估算及其在川东北地区的初步应用
DOI：
10.1016/j.marpetgeo.2017.02.028
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发表时间：
2018
影响因子：
4.2
通讯作者：
Dehan Liu
中科院分区：
文献类型：
--
作者：
Yunpeng Wang;Lingling Liao;Ansong Geng;Dehan Liu
在本文中，我们提出了一种估计无荧光的气态或轻质石油包裹体的体积蒸汽：液体比率的替代方法，使用规则形状的包裹体通过几何方法估计体积蒸汽：液体比率。该方法适用于来自四川东北部下三叠统飞仙关组和嘉陵江组岩石样品的包裹体。通过集成PVT模拟软件、所提出的方法确定的液体体积比和显微测温法测量的均质温度来计算包裹体流体的捕获压力。还估算了流体密度和油气比 (GOR)。嘉陵江组的估计捕获压力和温度（29.69–31.33 MPa，93.5–105.2 °C）略低于飞仙关组（31.02–34.38 MPa，98–148 °C），嘉陵江组和飞仙关组包裹体的捕获时间估计约为173–170 Ma和 178-168 Ma 分别。高压的分布与储层岩石中焦沥青的存在相关，表明运移的流体主要来自石油的二次裂化。模拟的流体密度和 GOR 对应于典型的轻油或凝析油，表明作为该过程中中间产物的捕获碳氢化合物的来源。
In this paper, we proposed an alternative way to estimate volumetric vapour: liquid ratio of gaseous or light-petroleum inclusions without fluorescence using regularly-shaped inclusions to estimate volumetric vapour: liquid ratios through geometric methods. The method was applied to the inclusions from the rock samples of the Lower Triassic Feixianguan and Jialingjiang Formations, NE Sichuan (China). The trapping pressures of inclusion fluids were calculated by integrating PVT simulation software, volumetric liquid: vapour ratios determined by the proposed method and homogenization temperatures measured by microthermometry. Fluid densities and gas-oil ratios (GOR) were also estimated. The estimated trapping pressures and temperatures are slightly lower for the Jialingjiang formation (29.69–31.33 MPa, 93.5–105.2 °C) than for the Feixianguan Formation (31.02–34.38 MPa, 98–148 °C), and the trapping time of the inclusions in the Jialingjiang Formation and Feixianguan Formation were estimated at about 173–170 Ma and 178-168 Ma, respectively. The distribution of high pressures correlates with the presence of pyro-bitumen in the reservoir rocks, suggesting the migrated fluid is derived mainly from the secondary cracking of oil. The modeled fluid density and GOR correspond to a typical light oil or condensate, suggesting an origin for the trapped hydrocarbons as an intermediate product in this process.
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影响因子：
4.2
作者：
R. Thiéry;J. Pironon;F. Walgenwitz;F. Montel
通讯作者：
R. Thiéry;J. Pironon;F. Walgenwitz;F. Montel
影响因子：
3.9
作者：
Aplin, AC;Larter, SR;Grunberger, D
通讯作者：
Grunberger, D
影响因子：
4.2
作者：
Aplin, AC;Macleod, G;Booth, T
通讯作者：
Booth, T
影响因子：
5.7
作者：
Liu Dehan;Xia Xian-ming;Xiong Yong-qiang;Geng An-song;Tian Hui;Peng Ping’an;Shen Jia-gui;Wang Yun-peng
通讯作者：
Liu Dehan;Xia Xian-ming;Xiong Yong-qiang;Geng An-song;Tian Hui;Peng Ping’an;Shen Jia-gui;Wang Yun-peng
影响因子：
3.9
作者：
Thiéry, R;Pironon, J;Montel, F
通讯作者：
Montel, F