水平井开发薄层特稠油油藏的界限优化研究

Limit Optimization of Thin-Bedded Extra-Heavy Oil Reservoir Developed by Horizontal Well

胜利油田的稠油油藏具有埋藏深、油层薄、边水严重以及原油黏度高等特点。以草128块沙三段为例,通过数值模拟研究,提出利用水平井开发该类稠油油藏,并对水平井的开发方式、布井区厚度、水平井距边水的距离以及水平井的注采参数等进行了优化研究。实践证明,该研究界限是可行的,且已取得了较好的经济效益。

The characteristics of heavy oil reservoirs are deep burial,thin bed,active edge water and high viscosity in Shengli Oilfield.The third section of Shahejie Formation in Block Cao128 has been taken as an example in this paper.Based on the reservoir numerical simulation,it is proposed that this type of heavy oil reservoir should be effectively developed by horizontal wells.Development scheme of horizontal wells,net pay in the designed well area,the distance from the horizontal wells to the edge water and injection-production parameters of horizontal wells have been optimized.The practice has proved that the researched limits are feasible and the excellent economic benefits have obtained.