蒙古林油田高效开发技术

High-efficiency Development Measures for Menggulin Oil Field

为了改善常规注水开发效果 ,在蒙古林油田通过应用以重建地质模型和剩余油分布规律研究为基础的三项稳产技术 ,即砂岩整体化学调剖为主体的“调水增油”技术、砾岩层状区横向驱替稳产技术和块状区整体加密优化注水稳产技术 ,实现了由低含水期到高含水期的相对稳产 .

The reservoirs in the oil field are composed of two parts of normal viscous crude sandstone reservoir and normal viscous crude bottom water conglomerate reservoir. They are of the characteristics of fewer kinds of oil bearing formations, high viscosity ratio of oil to water and worse continuity among the oil bearing formations. Therefore, it is very difficut to stabilize the output of the oilfield. In order to improve the result of conventional water drive development, some high efficiency development measures were adopted. To sandstone reservoir, the measures are implementing whole chemical profile control, changing the direction of underground liquid flow, and adjusting plane water injection arrangement. To conglomerate reservoir, the measures are increasing well network density, implementing transverse displacement and adjusting profile control technology. The output of the oilfield has been stablizing on the level of 31×10 4t/a for nine years by the implement of the measures. The practice in the oilfield can provide reference for the development of the same kind of reservoirs.