【作者】 彭柏群；

【导师】 张密林；

【作者基本信息】 哈尔滨工程大学 ， 应用化学， 2003， 硕士

【摘要】 本文根据某盆地大量现场施工资料，选取20口井的岩心，进行了其粘土矿物组成分析、岩心薄片形貌及结构分析，以及敏感性特征分析。 通过对储层岩矿特征、孔隙结构特征和物性特征分析，证明盆地的多数井段储集层含油、气性较差，仅少数井段较好。 根据粘土矿物的基本结构，结合粘土的水化膨胀、絮凝、分散情况，从理论上分析了粘土矿物对油层潜在的损害方式。通过大量的粘士矿物分析数据，表明盆地粘土矿物在纵向上由浅到深的变化规律是：蒙皂石—高岭石组合(以蒙皂石为主)、高岭石—蒙皂石组合(以高岭石为主)、高岭石—伊利石组合(以高岭石为主)、伊利石—高岭石组合(以伊利石为主)、伊利石—绿泥石组合。根据这些结果得出粘土矿物在盆地的浅层主要以膨胀的形式损害储层；在中层，主要以微粒运移的形式损害储层；在深层，主要以微粒运移和酸敏的形式损害储层。 储层敏感性实验研究证明，盆地的速敏性为弱到中速敏，水敏性第一和第三凹陷较强，而第二凹陷的水敏性相对较弱；酸化研究表明，现场目前使用的几种酸型配比小适合对该盆地进行酸化改造，必须探索新的酸化途径和配方。 由敏感性实验证明，整个盆地的敏感性主要以水敏和速敏为主，因此，哈尔滨工程大学硕士学位论文本文的储层敏感性研究为油层保护提出如下解决方案:第一凹陷水敏性较强，要特别注意防l仁粘1几矿物的水化膨胀;第二凹陷速敏性较强，要注意防止微粒迁移;第三IuI陷渗透性较差，应以压裂改造为主。更多还原

【Abstract】 This paper is based on a great deal of on-the-spot data in some basins. Log coresfrom twenty wells are selected to perform clay mineral composition analysis, shapeand structure of slice core analysis, and sensitivity analysis.Through analyzing rock feature, pore structure feature and physical feature ofreservoir, it turns out that the oil and gas potential in most well intervals is badand only a few well intervals are good.Based on basic structure, connected with hydrous expansion, flocculate anddisintegration, the potential method by which clay mineral does damage toreservoir is analyzed theoretically. Through much clay mineral analysis, itschanging regularity is shown from shallow to deep vertically, i.e.: smectite-kaolinite combination (mainly smectite), kaolinite -smectite combination (mainlykaolinite), kaolinite - illite combination (mainly kaolinite), illite - kaolinitecombination (mainly illite ), illite-chlorite combination. So it is concluded that inthe shallow layer, clay mineral does damage to reservoir by means of expansion,in the middle layer by means of particulate transmit, in the deep layer by means ofparticulate transmit and acid sensitivity.The reservoir sensitivity test turns out that the velocity sensitivity of the basin isweak to medium, water sensitivity is strong in first sag and third sag and weak inthe second sag. Acid treatment indicates that several types of acid on the spot areunfit for acid stimulation in the basin and it is necessary to discover new acidtreatment method and prescription.The reservoir sensitivity test turns out that the whole basin is mainly watersensitivity and velocity sensitivity. So the research of reservoir sensitivity in this paper give some Solving Schemes as follows. Water sensitivity of the first sag is strong, especially hydrous expansion of clay mineral; velocity sensitivity of the second sag is strong, preventing particulate transmit; permeability of the third sag is bad, to do fracture treatment mainly.更多还原