摘要
经过多年发展,水平井技术已应用于国内外各种类型的油田,并表现出明显优势。但是对于多层系层状砂岩油藏,水平井和定向井哪种井型更适用还需要进一步研究和分析。以海上S油田为研究背景,首先根据单井生产动态数据和水驱可采储量分析结果,初步认识了水平井和定向井在该油田中的开发效果;然后基于实际油藏数值模拟模型和概念油藏模型,研究认为多层系层状油藏的单井控制储量很大程度上影响着水平井与定向井的生产效果,同时水平井和定向井的开发效果还与各类储量的水淹级别有关。一般情况下,此类油藏中定向井的开发效果优于水平井,井型选择思路应采取"定向井为主、水平井为辅"的原则。本研究为该油藏二次综合调整中的井型选择提供了技术支持,同时为同类油藏开发过程中井型选择提供了借鉴。
After years of technology development, horizontal wells have be applied in different kinds of oilfield at home and abroad and shown obvious superiority. But for the stratified reservoir with multi-layer sandstone such as S oilfield were concerned, the application effect of horizontal wells and directional wells need further research and analysis. Based on S oilfield, the strengths and weakness of horizontal wells and directional wells were firstly evaluated by analyzing production data. And the research target and direction were put forward. Then based on actual reservoir numerical simulation model, it was concluded that for the reservoir similar to S, the single control reserves would greatly influence the production effect of horizontal wells and directional wells using digital virtual development technology. At last, the application effect of horizontal wells and directional wells were also related to various reserves figured out by establishing the theoretical numerical model. In general, the development effect of directional well was better than that of horizontal well in stratified reservoir with multi-layer sandstone. The study result provided the support and reference for the selection of well type in the process of secondary development of oiffield.
出处
《断块油气田》
CAS
2013年第2期216-220,共5页
Fault-Block Oil & Gas Field
基金
国家科技重大专项"海上油田丛式井网整体加密及综合调整技术"(2011ZX05024-002)
关键词
水平井
定向井
层状油藏
虚拟开发
数值模拟
horizontal wells
directional wells
stratified reservoir, virtual development
numerical simulation
