公开(公告)号：US20230003110A1

公开(公告)日：2023-01-05

申请号：US17782334

申请日：2020-04-24

申请人： NCS MULTISTAGE INC. ,  NCS MULTISTAGE, LLC

发明人： Dustin ELLIS ,  Shan ZI ,  John RAVENSBERGEN ,  Craig HARTY ,  Brock GILLIS ,  Stanley MBERIA ,  Anna CRUSE ,  Rio WHYTE

IPC分类号： E21B43/26 ,  E21B47/11 ,  E21B34/14

摘要： A valve assembly for integration within a wellbore string disposed within a hydrocarbon-containing reservoir is provided. The valve assembly includes a valve housing having a plurality of frac ports for establishing fluid communication between a central passage and the reservoir. The valve assembly includes a bottom sleeve operatively mounted within the valve housing configured to selectively open the frac ports, and a top sleeve operatively mounted within the valve housing slidable between (i) a first position defining a first fluid pathway whereby fluid is flowable down into the central passage and into the reservoir via the frac ports, and (ii) a tracing position defining a second fluid pathway whereby fluid is flowable from the reservoir into an annulus defined between the top sleeve and the housing. The valve assembly also has a tracer compartment defined within the annulus forming part of the second fluid pathway and accommodating a tracer material.