摘要
针对大庆油田北二东区块在特高含水期各层系调整井段长、层间干扰严重、注采关系复杂、油层动用状况差等问题开展了层系重组方法研究。通过细化开发层系重新匹配注采井网，达到了层系清晰、井距优化、井网独立的目的。重组后，各套井网的开采井段长度和层间渗透率级差大幅度下降，开发效果明显改善，数值模拟预测试验区最终可提高采收率2．55百分点，增加可采储量18．7×104t。
In light of the problems such as the long adjusted well section, severe interlayer interference, complicat- ed injection-production relationship, rather poorer developed performance etc. of the oil layers in each series of strata in East Bei＇er Block of Daqing Oilfield at ultra-high water cut stage, the researches on the recombing method of the series of strata have been carried out. Through subdividing the developed series of strata and re-matching the injection-production well pattern, the purposes of making clear of the series of strata, optimizing well spacing and establishing independent well pattern are achieved. After the recombination, the produced well interval length and interlayered permeability potential of each set of well pattern are greatly reduced, the developed results are obvious- ly improved, the numerical simulation predicts that the ultimate oil recovery in the test block can be enhanced by 2.55% , the reserve （recoverable oill can be increased by 18.7 ×104 t.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2013年第1期101-104,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
北二东区块
特高含水期
水驱
层系重组
调整方法
改善开发效果
East Bei＇er Block
extra high water cut stage
water flooding
recombination of the series of strata
adjusting method
improved development effect
