摘要
长庆油田是"低渗、低压、低产"的特低渗透油田,随着油田开发时间的延长,有机物沉积、结垢和微粒运移导致的油水井地层堵塞日趋严重,地层能量得不到及时补充,给油田稳产工作带来困难。黄39、池46等区块都存在储层非均质性强、注水压力高、储层深部堵塞等问题,特别是一些中高含水期的油井,地层堵塞产量低,常规酸化后高渗水层被打开而低渗油层得不到有效解决针对以上问题,2011年采油三厂引进ZFJ05复合降压增注工艺,并在现场进行试验,取得了较好的现场应用效果。
Changqing Oilfield is a typical oilfield with low permeability, low pressure and low production. As the oilfield development goes on, the formation plugging problem raised from organics deposition, scale formation and fine migration becomes more and more serious, and it causes the timely energy supplementation so difficult that stable production can＇t be real- ized. Blocks as Hang39 and Chi46 have problems of strong heterogeneity, high water-injec- tion-pressure, and deep plugging. For some wells in medium-high water cut stage, the for- mation plugging causes low yield. The conventional acidization improves the formation with high permeability while it fails for the formation with low permeability. Considering the problem mentioned above, in 2011, ZFJ05 multiple technology of depressurization and stim- ulation was carried out in plant 3 of Changqing oilfield, and field effect was satisfactory.
出处
《石油化工应用》
CAS
2012年第4期52-55,共4页
Petrochemical Industry Application
关键词
降压增注
酸化效果
压力高
深部堵塞
depressurization-stimulation
acidization effect
high pressure
deep plugging
