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l Tools & Technology l

 
Projects
System
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Overview

LDEO-BRG developed a multipurpose data acquisition system (3rd Party DAS) installed in the Downhole Measurements Lab (DHML) to interface with a wide variety of logging tools and support equipment. This system offers numerous features including a standard computer platform from which to launch acquisition software, several power supplies, and a work space in the acquisition area devoted to third-party equipment. Currently, the system is based on unique modular software for data telemetry, equipment triggering and switching for a variety of downhole devices. Each module has been written for a specific piece of equipment and can be run from any PC with the proper hardware installed.

The system currently utilizes the Windows XP operating system. Recent enhancements to the third-party tool included the design of a cablehead crossover that allows third-party tools to connected to the Schlumberger cablehead via an inexpensive, modified off-the-shelf connector. BRG maintains two identical DAS systems.

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Specifications


Windows XP operating system
1 GB RAM
250 GB HD
1 Serial ports
  4 RS 232 Serial Ports
  4 RS 485/422 Serial Ports
2 Parallel ports
Ethernet card
17" Monitor
3-button mouse
 
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Workbench

Also associated with the computer hardware is a workbench for deploying specialty electronics and miscellaneous equipment. A "cableway" mounted on the lab roof facilitates the passage of data and control cables out of the lab to other parts of the ship

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Borehole Research Group at Lamont-Doherty Earth Observatory of Columbia University, 61 RT 9W, Palisades, NY 10964