卡拉姆卡斯油田侧钻水平井开发效果影响因素

Analysis of Factors Affecting Development of Lateral Horizontal Well in Kalamkas Oilfield

油田进入开发后期,含水率高,剩余油分布高度分散,侧钻水平井可以充分利用原有采油井,对剩余油富集区域重点挖掘,是老油田稳产和二次上产的主要挖潜措施之一。为了提高侧钻水平井的开发效果,通过建立侧钻水平井注采井组机理模型,分析储层渗透率、油层厚度、侧钻水平井产液量、注采井距以及水平段长度对于侧钻水平井产能的影响。结果表明,选择储层物性好、油层厚度大的区域侧钻水平井,并且选择合理的注采井距、日产液(油)量以及水平段长度,能够较大程度地延缓含水上升,提高侧钻水平井产能和开发效果。

When the oilfield enters late-stage of development, the water cut is high,and the distribu- tion of remaining oil is highly disperse. Taking advantage of the existing oil wells, lateral horizontal well can develop enrichment regionals of remaining oil. Therefore, lateral horizontal well is one of the main measure for production stability and increased production. In order to improve the develop- ment effect of the horizontal well, the injection-production groups mechanism model of the horizontal well is established. This article analyzes the impact to capacity of lateral horizontal well by analyzing reservoir permeability, thickness of the reservoir, lateral horizontal well production volume, the level of injection-production well spacing, and length for horizontal section. The results show that develop- ment effect of lateral horizontal well is better and the water cut rise slower if drilling well is in good quality thick reservoir and rational production volume, and the level of injection-production well spacing and length of horizontal section are selected.