精品文献
英示仪器
测井仪器着陆指示器（英文）
测井仪器着陆指示器（英文）
专利号：US2014014329（A1）申请号：US201213545542申请日：2012.07.10专利申请人：RADFORD STEVEN R.;EVANS JOHN G.;BAKER HUGHES INCORPORATED公开日：2014.01.16An apparatus for evaluating an earth formation intersected by a wellbore may include a logging tool conveyed into the wellbore through a drilling tubular,a landing indicator associated with the logging tool,and a sensor operatively associated with the logging tool.
测井仪器着陆指示器
测井仪器着陆指示器
An apparatus for evaluating an earth formation intersected by a wellbore may include a logging tool conveyed into the wellbore through a drilling tubular, a landing indicator associated with the logging tool, and a sensor operatively associated with the logging tool. In use, the landing indicator generates a pressure pulse in the drilling tubular after contacting a travel restrictor positioned in the drilling tubular.