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Telemetry

The telemetry module is the uppermost tool in the stack. Its main function is to collect and combine digital data from all the other tools and to transmit this in a digital form via the logging wireline to the surface acquisition system. It also provides control functions and tool power to the other logging
tools. The tool includes natural-gamma, CCL, mud-resistivity and borehole-tilt measurements.

Principle of data communications:

All tools in the stack communicate with the telemetry module over common internal RS485 data buses. The telemetry module organises this data and transmits it to the surface digitally using a high-speed proprietary RG protocol. Data is acquired on a depth basis with a sample interval that can be selected to optimise measurement resolution and/or logging speed.

Features

  • Bi-directional digital transmission.
  • Compatible with industry-standard 5/16” or larger diameter cable

Measurements

  • Natural Gamma
  • Casing-collar locator (CCL)
  • Mud resistivity
  • Borehole inclination

Applications

Natural gamma

  • Lithology indication
  • Shale measurement
  • Bed- boundary/bed thickness measurement
  • Correlation between logs and wells

Mud resistivity

  • Correction of resistivity/conductivity logs

Casing collar locator

  • Location of casing shoe
  • Depth correlation between logs

Borehole tilt

  • QA of borehole construction
  • Bed thickness correction

Specifications

Diameter: 63mm (2.5”)
Length: 2.93m (115”)
Weight: 35kg (77lb)
Max. temperature: 125°C
Max. pressure: 86MPa (12,500psi)

Operating Conditions

Borehole type: 4” to 12” open hole

Sales Information

I015464 Telemetry
– Includes gamma, CCL mud-resistivity, tilt
Accessories
I015464 Natural gamma check blanket
I004127 Make-up plate
I004128 Assembly wrench

Download Telemetry sheet

Support

...Practical Innovation with Global Service & Support...

Robertson Geologging Ltd., 2017

how can we help you?

(+44) 1492 582 323 sales@geologging.com