摘要
针对聚驱转水驱后储层在平面和纵向上非均质性突出、注入水无效循环问题,提出了首先在油井堵水,然后在对应水井调剖的新工艺.数值模拟结果表明：在相同堵剂用量的条件下,可以大幅度提高油井的增油量和采收率;在保持水井调剖井距不变的条件下,逐渐增加油井反向调剖井距,采出井增油量和采收率会进一步提高;井组之间的连通性越好,增产效果越好.现场试验结果表明：井组平均综合含水率降幅达1.13百分点,8口油井累计降液10.3×10^4 m^3、累计增油0.12×10^4 t.
In the light of the problems of the serious horizontal and vertical heterogeneity for the reservoirs and non- effect cycle of the injected water after the water flooding inverted from the polymer flooding, the new technology is profile-controlled oil producers are gradually increased, the incremental oil production and recovery are prone to be further enhanced; the better the connectivity among the well groups, the better the incremental effect will be. The field test results show that the average water cut has been reduced by 1.13%, the liquid production of 8 oil wells has accumulatively reduced by 10. 3×10^4 m^3 whereas the accumulative incremental oil production is up to 0. 12×10^4 t.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第6期83-86,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
国家重大专项“大庆长垣特高含水油田提高采收率示范工程”(2011ZX05052)
关键词
堵水调剖
对应调堵
非均质性
聚合物驱油
water plugging/shut-off and profile controlling agent
corresponding profile control and plugging
heterogeneity
polymer oil flooding
