摘要
舍女寺油田女 34 断块是大港油区典型的低渗透块状砂岩断块油藏.由于储层严重的非均质性,注水开发见效快、水淹快,并且形成油藏次生底水.作为水平井技术改善低渗透油藏开发效果的先导试验区块,经过深入地质研究和可行性论证,又相继完钻 2 口水平井,同时进行注采井网调整,编制了水平井和直井采油、直井注水的混合井网调整方案.方案实施后,断块采油速度由0.6%提高到2.6%,采收率提高8个百分点,开发效果显著改善.实践证明水平井技术是改善低渗透非均质断块油藏开发效果的有效手段之一.
Nv34 fault-block is typical of the low permeability reservoir of Shenvsi oilfield in Dagang. Because of the anisotropy, the injection had water fingering seriously and it became second bottom-water. To improve development effects by horizontal wells two more horizontal wells were drilled in 1997. There are straight-wells and horizontal wells in the injection-production unit of Nv34 fault-block. The horizontal wells produce oil, while the straight-wells inject water. This is an effective way for improving development effects and enhancing oil recovery.
出处
《新疆地质》
CAS
CSCD
2004年第4期442-445,共4页
Xinjiang Geology
