【作者】 毛毳；

【导师】 周瑶琪； 陈勇；

【作者基本信息】 中国石油大学 ， 矿产普查与勘探， 2010， 硕士

【摘要】 流体包裹体不仅记录了沉积成岩流体的成分、温度、压力等信息,同时也记录了盆地油气生成和演化信息,尤其是储层烃类包裹体在储层成岩作用、油气运移、油气成藏、盆地分析、油藏地球化学等研究领域中有着重要的理论意义和应用价值。烃类包裹体在成矿、成藏等研究领域得到越来越广泛的重视,但是由于烃类包裹体成分和热力学行为的复杂性,其捕获条件的恢复及其捕获机制一直是一个难点。本论文利用人工合成烃类包裹体作为标准样品,对储层流体包裹体进行显微测温分析得到包裹体的均一温度和盐度,荧光光谱分析分辨烃类包裹体和盐水包裹体,显微傅立叶变换红外光谱获得烃类包裹体的CH₂/CH₃、CH₄及烷烃的摩尔百分含量,显微共聚焦激光扫描准确获得烃类包裹体的气液比。低温激光拉曼光谱的分析包括对NaCl-H₂O、CaCl₂-H₂O、MgCl₂-H₂O、KCl-H₂O、NaCl-CaCl₂-H₂O、CaCl₂-MgCl₂-H₂O以及FeCl₃-H₂O进行多次冷冻下的低温拉曼光谱测试。利用特征峰强度比值法建立了NaCl-H₂O、CaCl₂-H₂O体系水合物激光拉曼特征峰强度比值与盐度的相关拟合公式,实现了低温激光拉曼光谱的对于盐水包裹体定量分析。对于MgCl₂-H₂O、NaCl-CaCl₂-H₂O和CaCl₂-MgCl₂-H₂O体系,根据氯盐离子水合物低温下拉曼特征峰位置和强度可以进行定性和半定量分析。基于以上的实验分析,得到包裹体的各项热力学参数,对含烃盐水包裹体进行PVTX计算,恢复流体包裹体的捕获压力和捕获温度,应用东营凹陷沙四下亚段地层的古温压估算中。更多还原

【Abstract】 Fluid inclusions not only records the message of sedimentary diagenetic fluid,include composition,temperature and pressure,also records the basin of hydrocarbon generation and evolution,especially the hydrocarbon inclusions in the reservoir diagenesis,hydrocarbon migration,hydrocarbon reservoir,basin analysis,and the geochemical fields such as research has important theoretical significance and application value. Hydrocarbon inclusions were valued in mineralise and petroleum area. But because the composition and thermodynamic behavior of hydrocarbon were complexity,there were some problems in recovery of capture condition and mechanism. In this paper,synthetic hydrocarbon inclusions were used to standard sample. Microthermometry,Fluorescence spectroscopy,Fourier Transform Infrared spectrum and Confocal Scanning Laser Microscopy analysis were carried out on reservoir fluid inclusions to gain their homogenization temperature（Th）,salinity,CH₂/CH₃,the mole percent content of CH₄ and alkanes,gas and fluid ratio. Low temperature laser Raman spectroscopy analysis,NaCl-H₂O、CaCl₂-H₂O、MgCl₂-H₂O、KCl-H₂O、NaCl-CaCl₂-H₂O、CaCl₂-MgCl₂-H₂O and FeCl₃-H₂O systems were freezed multiple times under low temperature Raman spectroscopy testing. Using the characteristic peak ratio method to be established the NaCl-H₂O and CaCl₂-H₂O systems laser Raman characteristic peak ratio and salinity related formulae,realized the laser Raman spectra of quantitative analysis for aqueous inclusions. For MgCl₂-H₂O、NaCl-CaCl₂-H₂O and CaCl₂-MgCl₂-H₂O systems,according to chlorine ion hydrate under low temperature Raman characteristic peaks position and intensity can be quantitative and Semi-quantitative analysis.Based on these thermodynamic parameters,PVTX calculation for various inclusions,the trapping temperature and presssure were recoved,and the application of Dongying sag Es4x.更多还原