Short hop communication link for downhole MWD system
US5160925A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Apr 17, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The short hop communication link includes a sensor module positioned downhole from a motor in a well. The module includes sensors that monitor operational, directional and environmental parameters downhole and provide an electrical data signal indicative thereof. Sensors may also be positioned in the drill bit for obtaining parameters related to the bit, and communicating data signals reflecting the sensed parameters to the sensor module. The sensor module includes a transceiver, with an annular anrenna, for transmitting electromagnetic sensor data signals to a point above the motor. A control module, which also includes a transceiver with an annular antenna, is located above the motor, and receives the electromagnetic signals from the sensor module reflecting the sensed parameters. In addition, the control module is capable of transmitting command signals to the sensor module requesting data regarding desired parameters. The command module connects to a host module which orchestrates all measurement-while-drilling components downhole. The host module connects to a mud pulser for transmitting desired data to the surface for real-time processing. The sensor module is strategically p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.