摘要
针对冀中南部C油田注水井欠注严重的问题,在认真分析储层岩性的基础上,优选出了多氢酸酸化技术对8口注水井实施降压增注,平均注水压力降低3.4 MPa,增注316 m3/d,注水系统效率由52.1%上升至54.3%,注水单耗由6.8 k Wh/m3下降至6.4 k Wh/m3,累计节电3.6×104k Wh,对应油井累计增油500余吨,起到了良好的降压增注增油效果。
According to high injection pressure and low water flooding amount in south Jizhong C oilfield, on the basis of careful analysis about reservoir characteristics and blockage reason, the multi- hydracid acidizing technology with high dissolution rate, long effective action distance and no secondary precipitation has been used for acidizing plugging removal in 8 injection wells. The water injection pressure has been reduced by an average of 3.4 MPa, the water flooding amoun thas been increased by 316 m^3/d, the system efficiency can be increased from 52.1% to 54.3%, 3.6 × 10~4 k Wh electricity has been saved cumulatively. The technology has a better pressure- reducing & injecting-increasing and a good promotion and application value.
出处
《石油石化节能》
2016年第3期14-15,2-3,共2页
Energy Conservation in Petroleum & PetroChemical Industry
关键词
多氢酸
酸化
降压
增注
系统效率
multi-hydrogen
acidizing
pressure-reducing
injecting-increasing
system efficiency
