摘要
吐哈盆地雁木西第三系油藏由于注采比偏低,表现为底水上升、产量递减;雁木西白垩系油藏由于注采井网不完善和上下油组注采不平衡,导致地层压力下降、产量递减。针对存在的问题,确定各个油藏的平衡注采比及压力恢复速度,对注采井网、油水井层位、单井配注提出了调整意见。在进一步完善注采井网、合理配注的基础上,第三系油藏2006年地层压力恢复0.35MPa,白垩系油藏2006年地层压力恢复0.4MPa,取得较好的效果。
Low injection - production ratio of Yanmuxi Tertiary reservoir in Tuha basin leads to bottom water ascend and production decline. Unimproved injection - production pattern and injection imbalance of upper and lower oil producing group of Yanmuxi Cretaceous reservoir lead to formation pressure drop and production decline. As for the existing problems, balanced injection - production ratio and pressure build - up rate of various reservoirs should be determined, adjustment suggestion on injection - production pattern and oil and water well＇s horizon as well as individual well injection allocation are given. Based on the further improvement of injection and production pattern as well as reasonable injection allocation, formation pressure of Tertiary reservoir will build up 0.35 MPa and that of Cretaceous reservoir will come back 0.4 MPa in 2006, with a good effect.
出处
《吐哈油气》
2007年第3期266-268,共3页
Tuha Oil & Gas
