摘要
桩西中高渗透油藏非均质严重,由于长期回注不合格的污水,导致注水井近井地带污染严重,单纯采取酸化措施,增注水量易沿不均地层中的相对高渗透层流动,对中低渗油层水驱效果较差。针对该类注水井,提出了近解远调现场施工工艺,现场试验八井次,避免了对应油井水淹,增油效果明显。
Heterogeneity is serious in middle -high permeability reservoirs of Zhuangxi oilfield. Because the reinjecting wastewater doesn't qualify for a long time, near-well-bore zones of water injection wells are seriously polluted. If only acidizing measure being taken, the increased injection water will flow easily along relatively high permeability layers in non-uniform formation, wa-terflood effect for mid-low permeability oil-bearing formations is bad. For this type of water injection wells, a field operating technology of plugging removal near -wellbore zone and profile control far -wellbore zone is proposed in this paper. This technique has been operated eight well-times, corresponding oil wells aren' t watered and good results of increment oil are achieved.
出处
《油气地质与采收率》
CAS
CSCD
2003年第4期57-58,共2页
Petroleum Geology and Recovery Efficiency
