公开(公告)号：EP2652262B1

公开(公告)日：2019-10-16

申请号：EP11848312.2

申请日：2011-11-17

申请人： ExxonMobil Upstream Research Company

发明人： KUMARAN, Krishnan ,  SUBRAHMANYA, Niranjan, A. ,  ENTCHEV, Pavlin, B. ,  TOLMAN, Randy, C. ,  ANGELES BOZA, Renzo, M.

IPC分类号： E21B47/09

公开(公告)号：EP2652262A1

公开(公告)日：2013-10-23

申请号：EP11848312.2

申请日：2011-11-17

申请人： Exxonmobil Upstream Research Company

发明人： KUMARAN, Krishnan ,  SUBRAHMANYA, Niranjan, A. ,  ENTCHEV, Pavlin, B. ,  TOLMAN, Randy, C. ,  ANGELES BOZA, Renzo, M.

IPC分类号： E21B47/00

摘要： Methods and apparatus for actuating a downhole tool in wellbore includes acquiring a CCL data set or log from the wellbore that correlates recorded magnetic signals with measured depth, and selects a location within the wellbore for actuation of a wellbore device. The CCL log is then downloaded into an autonomous tool. The tool is programmed to sense collars as a function of time, thereby providing a second CCL log. The autonomous tool also matches sensed collars with physical signature from the first CCL log and then self-actuates the wellbore device at the selected location based upon a correlation of the first and second CCL logs.