Pressure pulse well tool
US9494006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2013 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Feb 7, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Implementations described herein are directed to a pressure pulse well tool, which may include an upper valve assembly configured to move between a start position and a stop position in a housing. The pressure pulse well tool may also include an activation valve subassembly disposed within the upper valve assembly. The activation valve subassembly may be configured to restrict a fluid flow through the upper valve assembly and increase a fluid pressure across the upper valve assembly. The pressure pulse well tool may further include a lower valve assembly disposed inside the housing and configured to receive the fluid flow from the upper valve assembly. The lower valve assembly may be configured to separate from the upper valve assembly after the upper valve assembly reaches the stop position, causing the fluid flow to pass through the lower valve assembly and to decrease the fluid pressure across the upper valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.