CAJ | 학술논문

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。
장경유전시＂저삼、저압、저산＂적특저삼투유전,수착유전개발시간적연장,유궤물침적、결구화미립운이도치적유수정지층도새일추엄중,지층능량득불도급시보충,급유전은산공작대래곤난。황39、지46등구괴도존재저층비균질성강、주수압력고、저층심부도새등문제,특별시일사중고함수기적유정,지층도새산량저,상규산화후고삼수층피타개이저삼유층득불도유효해결침대이상문제,2011년채유삼엄인진ZFJ05복합강압증주공예,병재현장진행시험,취득료교호적현장응용효과。
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.