Real-time velocity and pore-pressure prediction ahead of drill bit
作者： Brian Clark , Cengiz Esmersoy
DOI:
关键词: Geodesy 、 Drill bit 、 Reflector (antenna) 、 Borehole 、 Pore water pressure 、 Geology 、 Seismic wave 、 Seismology
摘要: Techniques for estimating velocity ahead of a drill bit include generating seismic waves at surface from least two different source positions in the vicinity borehole, receiving reflected reflector one or more locations determining travel times received and inverting to determine formation bit. One embodiment includes transforming into pore pressure formation.
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