摘要
胜利油区蕴藏着丰富的稠油资源,但大多具有活跃的边底水。在注蒸汽吞吐长期降压开采过程中,油藏压力下降导致边底水推进,水淹井区含水急剧上升,水侵范围不断扩大,水侵区控制储量占总动用储量的70%左右。为了提高边底水稠油油藏的最终采收率,提出将单井乙型水驱特征曲线用于稠油油藏,并结合水侵现状将整个油藏划分为不同的井区:强水侵区、弱水侵区、无水侵区和外层水侵。运用稠油渗流的知识,分析了不同井区的开发指标的变化规律。不同井区暴露的开发矛盾不同,根据不同矛盾采取不同的调整方案,效果显著。
There are abundant heavy oil reservoirs in Shengli oilfield,but most of them with active edge and bottom water.During the process of huff and puff,the reservoir pressure decreases continuously,which results in the edge and bottom water advancing forward,water content ratio of flooded area raises sharply,and water flooded area expands which comes up to 70 percent of the total producing area.In order to enhance the ultimate recovery factor,exploitative law is analyzed in heavy oil reservoir with edge and bottom water.Displacement performance curve is applied in heavy oil reservoir for the first time.And in accordance with the present situation of water invasion,the whole heavy oil reservoir is divided into different well blocks,i.e.,strong water-cut block,weak water-cut block,non-water-cut block,and outer layer water-cut block etc.Variation law of development target is analyzed by using heavy oil permeability knowledge.According to different development contractions,distinct adjusting program is adopted,and then remarkable effect is acquired
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第3期93-96,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
稠油油藏
水侵
开发特征
开发对策
孤岛油田
heavy oil reservoir
water invasion
development feature
development strategy
Gudao Oilfield
