缝洞型油藏物理实验模型制作新方法

为弥补现有的传统的缝洞型油藏物理实验模型制作技术的不足,以覆膜树脂砂和环氧树脂胶胶结石英砂为原料,利用自动成型机(3D打印机)的选择性激光烧结技术(selective laser sintering, SLS),创新性地提出了一种缝洞油藏物理实验模型制作地新方法。它的制作过程主要包括缝洞数字模型的构建、3D打印、硬化处理、降孔降渗处理、充填封装及打井。利用该方法可制作基于二维地质剖面的二维可视化缝洞物理实验模型,也可制作基于三维地质模型的三维真实缝洞物理实验模型。且利用该方法制作的模型具有制作精度高、缝洞刻画真实、成本低等特点,能够更好地应用在缝洞油藏的物理模拟实验中,助力缝洞型油藏地高效开发。

A new method for manufacturing physical experimental models of fracture-cavity reservoir

In order to make up for the shortcomings of existing traditional technology for manufacturing fracture-cavity reservoir physical experiment models, the paper innovatively proposed a new method. The raw materials used in this method were coated resin sand and epoxy resin cemented quartz sand. And the selective laser sintering technology (SLS) of the automatic molding machine (3D printer) is applied. Its production process mainly includes the construction of the fracture-cavity digital model, 3D printing, hardening treatment, porosity and permeability reduction treatment, filling and packaging and well drilling. This method can be used to make a two-dimensional visualized fracture-cavity physics experimental model based on a two-dimensional geological section, as well as a three-dimensional real fracture-cavity physics experimental model based on a three-dimensional geological model. The models produced by this method have the characteristics of high production accuracy, real fracture-cavity depiction, and low cost. It can be better used in physical simulation experiments of fracture-cavity reservoirs to help efficient development of fracture-cavity reservoirs.