Ultra-line/One-Line Downhole Controller Tool

What Is Ultra-line/One-Line Downhole Controller Tool?

The XTU Downhole Controller is an intelligent bridge between the One-Line™ tool bus and the Netssu’s Ultra-line telemetry system. It serves both as a communications interface and as a programmable logging controller. It also incorporates a dc-dc converter (switch mode power supply) to convert the high voltage on the Ultra-line to power the One-Line™ tool bus.
In its capacity as a logging controller, the XTU polls each tool on the tool string for its data packet and assembles these data packets into frames for uplink to the surface.
The sequence in which the tools are polled is determined by a logging program, which may be generated automatically or specified by the operator.
By default, the polling program is generated and executed by the XTU without any intervention from the surface system, making logging a very simple process.

Purpose

The purpose of the XTU Downhole Controller is:

• • To collect data from tools on the One-Line™ tool bus and to transmit this data to the Surface via the Ultra-line line automatically or under

user control.

• To facilitate bi-directional communication between the surface system and individual One-Line™ tools.
• To convert high voltage dc power from the Ultra-line line to supply the low voltage Tools on the One-Line™ tool bus.

Features

• Fully automatic “plug and play” configuration and start¬up.
• Automatic identification of all the tools in the toolstring.
• Automatic generation of a default polling program that enables all the identified tools to share the available bandwidth on the wireline.
• Automatic transmission of the toolstring configuration to the surface system.
• Selectable Ultra-line bit rate (50-200 kBits/s) to suit varying demands and conditions.
• Automatic downlink failure detection triggers reversion to default bit rate.
• Support for sophisticated downloadable user defined logging programs.
• Detailed tool bus error detection and logging to facilitate fault finding.

For more information, please contact us.