Key Features

Utilises Sonardyne Wideband technology to ensure robust, high speed data retrieval rates

Can be installed on a vessel of opportunity to recover logged data from remote wells

Can be permanently installed on a rig to cover data from satellite wells

Compact and rugged design

Supplied with Surface Interface Unit, 70m dunking cable and 50m deck cable

The Data Logger Dunker contains a directional acoustic transducer and the transceiver electronics. It is designed for a high level of noise rejection from the rearward and sideways facing directions, enabling it to receive acoustic signals very effectively in the presence of thruster noise.

Sonardyne have extensive experience of receiving acoustic communications on noisy drilling vessels in depths up to 3000m. The transceiver weighs 39kg in air and 27kg in water which necessitates that it is deployed from a small crane or some other over-the-side deployment scheme (not supplied by Sonardyne).

It can also be permanently mounted on a vessel through a gate valve and deployment machine. The transceiver is supplied with 70m cable on a drum and a 50m deck cable that connects the transceiver cable to the location of the control computer. A transceiver interface is supplied with the computer providing RS232 to RS485 conversion and dc power to the transceiver.

Surface Interface Unit and Control Computer
The surface system is designed to operate with a standard laptop PC running Microsoft Windows 2000 or XP operating system. This would normally be the client’s own PC but can be supplied by Sonardyne at additional cost if required.

The PC interfaces to the surface transceiver via a Surface Interface Unit that provides D.C. power and a serial communication interface to the transceiver. The PC software supplied is an application program running under the Microsoft Windows operating system.

Automatic retrieval of data and setting of the logging configuration is initiated by virtual button presses and selections from simple dialogue boxes. Gauge coefficients are imported from disk and the data converted into engineering units before being stored on hard disk for export to a file in spreadsheet format.