埕岛油田中二区综合调整技术政策实践与评价

Practice and evaluation of comprehensive adjustment technology of Zhonger block in Chengdao oilfield

埕岛油田中二区长期采用一套层系开发,井网不完善、层间干扰、采油速度低等问题十分突出。为了提高采油速度和采收率,2009年以来进行了细分层系、加密井网为主的综合调整,并在调整过程中通过运用强化方案跟踪调整、优化射孔井段、推广应用水平井、及时实施老井归位、适时进行油井提液等技术手段,开发效果明显改善。综合分析认为现行的调整技术政策与做法能够满足中二区该阶段高效开发的需求。

Due to long-term adoption of one series of strata development in Zhonger block of Chengdao oilfield,problems such as imperfect well pattern,interlayer interference,low oil production speed and etc became prominent.In order to enhance oil production speed and oil recovery rate,a comprehensive adjustment such as strata series subdivision and well pattern infilling has been adopted since 2009.Besides the comprehensive adjustment,other technique means such as optimized perforation interval,popularization and application of horizontal wells,timely implementation of old well,timely liquid extract in oil wells have been applied and then the development effect has been obviously achieved.Comprehensive analysis believes that the practices of the adopted adjustment technology can meet the needs of high efficient development in the area at present.