海上油田低效井侧钻评价井方案优化设计  

Optimization Design of Sidetracking Evaluation Well Scheme by Low Efficiency Wells in Offshore Oilfield

作　　者：吴占民 陈国宏 王赞 陈立强 骆奎栋 WU Zhanmin;CHEN Guohong;WANG Zan;CHEN Liqiang;LUO Kuidong(CNOOC Enertech-Drilling&Production Co,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《北京石油化工学院学报》2023年第1期43-46,52,共5页Journal of Beijing Institute of Petrochemical Technology

摘　　要：为了降低海上评价井长期试采的成本,利用现有生产平台低效井侧钻评价井。介绍了3口低效井侧钻评价井的方案优化过程,针对评价区块储层不确定性较大的情况,轨迹设计时综合考虑了评价井位与备用井位,优化侧钻轨迹设计,能够降低作业难度,减少总进尺。结合测井工具现状及机具作业能力,优化井身结构,在满足评价井资料录取的前提下降低作业难度。结果表明,利用低效井侧钻评价井能够实现油藏对目标区块的评价作用,在满足安全的前提下,评价成本大幅度降低,3个典型案例为低效井侧钻评价井提供了可供参考的方案设计优选经验。In order to reduce the cost of long-term production test of evaluation well,it is decided to sidetrack evaluation well by using low efficiency well of production platform.The optimization process is introduced to deal with the side drilling evaluation wells of three low efficiency wells.In view of the large reservoir uncertainty in the evaluation block,the trajectory design can reduce the operation difficulty and the total footage by comprehensively considering the evaluation well location and standby well location and optimizing the sidetracking trajectory design.Combined with the current situation of logging tools and the operation ability of tools,the wellbore structure is optimized,and the operation difficulty is reduced on the premise of satisfying the data acquisition of evaluation wells.Results show that the evaluation effect of the reservoir on the target block can be realized by using the sidetracking evaluation well of the low efficiency well,and the evaluation cost can be greatly reduced on the premise of meeting the safety.Three typical cases provide a valuable reference e for scheme design optimization of low efficiency sidetracking evaluation well.

关 键 词：评价井 侧钻 资料录取 方案优选 

分 类 号：TE52[石油与天然气工程—油气田开发工程]