榆树林论文.doc

摘要岩石孔隙结构特征是影响储层流体(油、气、水)的储集能力和开采油气资源的主要因素,因此明确储集层岩石的孔隙结构特征是充分发挥油气产能和提高油气采收率的关键。随着油田的不断开发,许多油田已进入高含水阶段,而高含水油田稳产的关键就是认清剩余油的分布。而微观孔隙结构又是影响剩余油分布的关键因素。因此,本文首先介绍了研究储层岩石孔隙结构的方法:室内实验和利用测井资料评价岩石孔隙结构的两大类方法。其次,从孔隙大小、孔隙成因及剩余油的微观赋存状态等方面对孔隙结构进行了分类并描述了其特点。最后,研究了微观孔隙结构及其与剩余油分布的关系。研究表明:微观孔隙结构和沉积相是影响剩余油分布的主要因素,据此可以预测剩余油分布的具体部位,从而指导高含水期油田控潜的方向。关键词:微观空隙结构:剩余油分布;砂岩储层,沉积相。 Abstract Rock pore structure is the main factor affecting fluid (oil, gas and water) storage and hydrocarbon recovery, so that a thorough understanding of reservoir rock pore structure is critical to improve oil and gas recovery factor. With the development of oilfields, many old reservoir in the east of China enter the high water-bearing development period . Sustaining a high and stable production rate faces severe challenge. The key to preserve oil output in high water cut period is depended upon the properties of residual oil distribution, and micro pore structure is the key factor to residual oil distribution. The first, this paper introduces the study methods of reservoir rock pore structure: in-house experiments and logging date evaluation method. The second, based on studying of pore size, pore formation and micro existence situation of residual oil, this paper classifies pore structure and depicts its character. The last, this paper studies the feature of micro pore structure and microcosmic remaining oil distribution. Studying result shows that micro pore structure and sedimentary microfacies are the critical factors which depend on residual oil distribution, according to it, we can forecast the concrete spot of residual oil distribution, and instruct the exploiting direction in high water-bearing oil field . K ey words : Micro pore structure ; Residual oil distribution; Sand reservoir; Sedimentary facies 前言储集岩的孔隙结构特征是指岩石所具有的孔隙和喉道的几何形状、大小、分布及其相互连通关系,它是影响储集能力和渗流特性的主要因素。流体,特别是多相流体在储集岩石中的渗流特性除了与其所处的温度、压力条件和岩石与流体之间的相互作用有关外, 更重要的是与岩石的微观孔隙特征有关。这是因为一切方式的采油,都是在岩石中的孔隙和吼道中进行的,它既是储集空间,也是渗流空间。东 16 井区位于榆树林油田的北部,该井区是一个被断层复杂