Telemetry system for borehole logging tools
US6552665B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1999 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Dec 8, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A borehole telemetry system including a surface telemetry module, a downhole telemetry module, and a multiplexed datalink between the surface and downhole modules capable of transferring data alternately between an uplink in which date is transferred from the downhole module to the surface module and a downlink in which data is transferred from the surface module to the downhole module; wherein the data link can be switched between a first configuration in which a relatively long time is assigned to the uplink and a relatively short time is assigned to the downlink, and a second configuration in which a relatively long time is assigned to the downlink and a relatively short time is assigned to the uplink. The first configuration can be used to transmit data when logging with downhole tools and the second configuration can be used to program logging tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.