摘要
油田综合调整工作是多层砂岩油田缓解注采矛盾、提高开发效果的有效手段之一,井型优选是油田综合调整过程中一项重要研究内容。以M油田为研究背景,首先根据一次综合调整实施后,井的生产动态数据、单井控制储量和水驱采收率分析结果,初步评价了水平井和定向井在此类油田中的开发效果。然后基于实际油藏数值模拟模型和理论油藏模型,对于类似M油田的多层系油田,得出单井控制储量将很大程度上影响水平井与定向井的生产效果。当定向井与水平井的单井控制储量在2.65—3.10倍时,水平井与定向井累产油比值相当;同时得出水平井和定向井开发效果还与单井控制储量的水淹级别相关,不同水淹状况下,定向井与水平井开发效果不同。对于较厚的水淹程度不大或底部水淹砂体,采用水平井进行局部挖潜能够取得比较好的结果。
Comprehensive adjustment is one of effective way to improve the effect of oilfield development in multi-layer sandstone oilfield. Based on M oilfield, the development effect of directional and horizontal well was ini- tially evaluated by analyzing production index, the single well controlled reserves and single well＇ s water drive re- covery of adjustment wells. Then based on actual and theoretical reservoir numerical simulation model, it is conclu- ded that the oilfield similar to M reservoir the single control reserves would greatly influence the production effect of horizontal wells and directional wells. When the ratio of directional and horizontal well controlled reserves is be- tween 2.65 and 3.10, the cumulative production of directional is almost equal to horizontal well. And the develop- ment effect of horizontal wells and directional wells was impact by the condition of different flooding degree. The horizontal well would be get good result in thick and low water flooding degree sand.
出处
《科学技术与工程》
北大核心
2013年第14期4004-4009,共6页
Science Technology and Engineering
基金
国家科技重大专项(2011ZX05024-002)资助
关键词
多层
综合调整
井型优选
油藏数值模拟
multi-layer comprehensive adjustment well type optimization numerical reservoir simulation
