Top-down fracturing systems and methods
US10975661B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2018 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jan 19, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flow transported obturating tool for actuating a valve in a wellbore includes a housing including a radially translatable engagement assembly, and a core slidably disposed in the housing, wherein the engagement assembly is configured to shift the valve from a first closed position to an open position when the core is in a first position relative to the housing, and wherein the engagement assembly is configured to shift the valve from the open position to a second closed position in response to the core being displaced from the first position to a second position that is spaced from the first position in a first axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.