Downhole apparatus, device, assembly and method
US9243492B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Dec 5, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole assembly includes an apparatus for generating a fluid pressure pulse downhole. A disclosed apparatus for generating a fluid pressure pulse downhole includes an elongate, generally tubular housing defining an internal fluid flow passage and having a housing wall. The apparatus also includes a device for selectively generating a fluid pressure pulse, the device having a cartridge which can be releasably mounted entirely within a space provided in the wall of the tubular housing. The internal fluid flow passage defined by the tubular housing is a primary fluid flow passage. A secondary fluid flow passage has an inlet which communicates with the primary fluid flow passage. The cartridge houses a valve actuable to control fluid flow through the secondary fluid flow passage to selectively generate a fluid pressure pulse. Data relating to a measured downhole parameter or parameters can be transmitted to surface via the pressure pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.