Convertible tracer valve assemblies and related methods for fracturing and tracing
US11959370B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 24, 2020 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | May 24, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.