DX12 井区砂体规模小，储量丰度低，具有“一砂一藏”的特征，油藏非叠合区采用点状注水开发。 据水驱油藏开采物理模拟相似准则，建立了五点法注采井网油藏物理模拟系统，验证了矢量井网在非均质油藏开发中的有效性和适用性，并应用矢量井网理论，结合数值模拟方法对 DX12 井区小型油藏非叠合区点状井网进行了优化。 结果表明：矢量井网对改善开发效果及提高原油采收率具有显著效果。

The DX 12 well field is characterized by relatively small sand bodies, low reserves abundance and has the characteristic of “one sand, one reservoir”. The method of scattered water flooding is applied to develop the nonoverlapping regions of the reservoir. This paper established a reservoir physical simulation system of five-spot water flooding pattern, verified the effectiveness and practicality about vector well pattern in the development of heterogeneous reservoir, and applied the theory of vector well pattern combined with the method of numerical simulation to optimize the scattered well pattern of non-overlapping regions of the small reservoir in DX 12 well field. The result shows that the optimization of well pattern has a significant effect on improving the development effect and enhancing the producible oil index.