摘要
随着水平井钻井工艺水平的提高及钻井成本的降低,利用水平井技术挖潜厚油层顶部的剩余油已成为改善油田开发效果的途径之一。在对国内外水平井技术现状分析的基础上,提出了大庆老区厚油层水平井水淹问题的几点认识以及今后如何应用水平井技术的初步建议。
The mature oil fields early developed in Daqing have entered late period of specially high water cut stage, and it is believed that a great amount of remaining oil is trapped in thick zones. Now horizontal wells can be drilled at lower cost, it is becoming more feasible to tap the remaining oil in the upper part of thick pay zones. Sand bodies penetration percentage is pertinent to following 3 factors; accurate prediction of the top microstructure of sand bodies, accurate landing of horizontal wells and adjustment of horizontal section drilling trajectory. Watered out problems of horizontal wells in thick oil pay zones concern with the techniques about avoiding watered out in thick pay zones and the developing principles. New suggestions about application of horizontal wells for EOR in Daqing mature oil fields are established.
出处
《大庆石油地质与开发》
CAS
CSCD
2004年第6期39-40,共2页
Petroleum Geology & Oilfield Development in Daqing
基金
本文为中国石油天然气集团公司高含水后期剩余油分布监测及挖潜技术研究项目(020101-5)的阶段研究成果。
关键词
大庆老区
厚油层
水平井
水淹
三次采油
sand bodies penetration percentage
watered out
EOR
horizontal well
thick oil pay zone
Daqing mature oil fields
