<p>A working string is used to actuate a first valve of a completion string in a well to seal a float shoe of the completion string from a remainder of the completion string. The working string is also used to actuate a second valve of the completion string to seal the center bore of the completion string. Actuating the first valve and the second valve is performed without withdrawing the working string from the well. In certain instances, the working string is a washpipe that includes a shifting profile for each valve.</p>
申请公布号
WO2015105517(A1)
申请公布日期
2015.07.16
申请号
WO2014US11323
申请日期
2014.01.13
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
ROANE, THOMAS OWEN;ROSAS, ANTONIO;ZHENG, GUAN;HUBERT, THOMAS EDWARD