The success and failure of different chemical enhanced oil recovery (CEOR) techniques can control to a large extent by the presence of different types of clay, its surface area and the reactivity of the clay with the injected chemicals during CEOR techniques. Therefore, reservoir clay analysis is important to study the CEOR process in general and to formulate the CEOR slug in particular. This study pertains to the underground porous media of upper Assam basin. In this paper effective porosity, absolute permeability, minerals and clays present in porous media is studied. Effective porosities were determined to estimate the total pore volume and more importantly the connecting pores and the throat volumes. The absolute permeability are exclusively the properties of the porous media, which determines the ease of flow of fluid through the porous media. Rock petrography study was done by examining the thin sections under optical microscope, Scanning Electron Microscope (SEM) and X-ray Diffractometer (XRD). From these studies the mineral and clay content of the reservoir was characterized, which helps to study the feasibility of a CEOR in upper Assam basin. This petrography study provides two and three dimensional accurate description of minerals of reservoir rock and clay particles. The porous media is a sandstone with high porosity and low absolute permeability. The clays present are smectite, kaolinite and illite with a dominance of smectite and kaolinite, conforming to the swelling and disintegration.

在CEOR技术期间，不同类型的黏土的存在，黏土的表面积以及黏土与注入的化学品的反应性，可以在很大程度上控制不同化学强化油采收（CEOR）技术的成败。因此，储层黏土分析对于总体研究CEOR过程，特别是制定CEOR块很重要。这项研究涉及上阿萨姆邦盆地的地下多孔介质。本文研究了多孔介质中存在的有效孔隙度，绝对渗透率，矿物和粘土。确定有效孔隙率以估计总孔隙体积，更重要的是估计连接孔隙和喉咙体积。绝对渗透率仅是多孔介质的特性，它决定了流体流过多孔介质的难易程度。岩石岩石学研究是通过在光学显微镜，扫描电子显微镜（SEM）和X射线衍射仪（XRD）下检查薄片来完成的。从这些研究中，对储层的矿物和粘土含量进行了表征，这有助于研究在阿萨姆邦盆地上游建立CEOR的可行性。这项岩相学研究提供了二维和三维准确描述储层岩石和粘土颗粒矿物的信息。多孔介质是具有高孔隙率和低绝对渗透率的砂岩。存在的粘土是绿土，高岭石和伊利石，其中以绿土和高岭土为主，符合溶胀和崩解。通过这些研究，对储层中的矿物和粘土含量进行了表征，这有助于研究在阿萨姆邦盆地上游建立CEOR的可行性。这项岩相学研究提供了二维和三维准确描述储层岩石和粘土颗粒矿物的信息。多孔介质是具有高孔隙率和低绝对渗透率的砂岩。存在的粘土是绿土，高岭石和伊利石，其中以绿土和高岭土为主，符合溶胀和崩解。通过这些研究，对储层中的矿物和粘土含量进行了表征，这有助于研究在阿萨姆邦盆地上游建立CEOR的可行性。这项岩相学研究提供了二维和三维准确描述储层岩石和粘土颗粒矿物的信息。多孔介质是具有高孔隙率和低绝对渗透率的砂岩。存在的粘土是绿土，高岭石和伊利石，其中以绿土和高岭土为主，符合溶胀和崩解。