摘要
随钻地震是地震技术和钻井技术的结合。随钻地震的主要功能有:指示正钻钻头的工作位置;识别地层、岩性、断层、裂缝带;可以预测钻头前方的地层和地层孔隙异常压力等。它的主要用途为:在探井中可以及时发现油气层,提高探井成功率;为井身轨迹提供地质导向依据,使井身轨迹准确“入窗上靶”。随钻地震获取的信息是油藏未被污染的原始参数,这对制定保护油气层和油藏描述等工作具有重要价值。随钻地震不需要专门的井下仪器,只需在钻杆的顶部安装传感器和在井场附近的地表埋置常规检波器,就可进行随钻测量和现场实时处理,在井场就可以得到钻井决策的地震资料。随钻地震技术可以降低钻井成本。
Seismic While Drilling(SWD)is a drilling technique integrated with seismic technique.The main
advantages and application of SWD are summarized.By SWD,the drilling bit can be positioned
accurately,the drilled formation,lithologic characteristics,faults and fracture zone can be
identified,the formation ahead of bit and abnormal formation pressure can be predicted.SWD
can be used in well drilling trajectory control and can also be used in exploration wells to
discover oil reservoir and protect oil reser vior from damage.Without any downhole instrument,
the system of SWD is equipped with a sensor on the top of the drillstring and reservers on
earth surface.Seismic data are processed and utilized at the well site for real time drilling
decision.SWD will significantly reduce drilling cost,and increase economic benefits of
exploration and exploitation.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1999年第2期67-72,共6页
Acta Petrolei Sinica
基金
国家自然科学基金
关键词
钻头
钻井
随钻地震
地震勘探
地震数据处理
drill bit drilling seismic wave data processing
geologic exploration