Ncs Multistage Inc.

Repeat Precision, LLC

Craig Harty

John E Ravensbergen

Brock Gillis

Rio Whyte

Stanley Mberia

Dustin Ellis

Shan Zi

Anna Cruse

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.

Convertible tracer valve assemblies and related methods for fracturing and tracing

Growing community of inventors

Calgary, Canada

Craig Harty