Pilot operated mud-pulse valve
US3958217A · kind A · utility
133Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | May 10, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mud pulse telemetry system is presented for transmitting information from the bottom of a well hole to the surface. The mud pulse telemeter is a pilot operated valve which restricts the flow of mud in the drill string to set up pressure waves in the mud stream which can be detected at the surface. The pilot operated mud pulse telemeter uses a small input signal to operate the telemeter valve by pressure differentials created in the mud stream itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.