Troika International has recently released yChecker, our newest software to verify and ensure your SEGY data is up to the SEG and your own standards.

yChecker gives the capability to validate entire directories based off the Society of Exploration Geophysicists standards for SEGY rev 0 and 1. In addition, users can customize specific items within the EBCDIC headers to be validated throughout an entire SEGY project. This gives the user total confidence that a SEGY dataset is delivered at full compliance, and that all troublesome data is located early on in the ingestion process.

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Secure the contents of any Seismic tape onto disk through magneto's highly accessible interface.

Tape Transcriber

Magneto is built to cleverly and quickly transcribe SEG-Y data from tape onto disk. The software takes each individual SEG-Y file from the desired tape, and writes them separately and encapsulated in SEG-Y for further analysis.

Any seismic data other than SEG-Y is copied onto disk in an efficient RODE encapsulation package.

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Troika International is proud to introduce dChecker, a simple yet detailed software package to ensure your SEG-D data conforms to the SEG's format specifications.

dChecker allows preventative measures to ensure your SEG-D records are always validated correctly. 
With customizable options to display various levels of detailed technical parameters, dChecker is an optimal tool for a wide variety of users to guarantee your SEG-D data is SEG compliant.

When dealing with large SEG-D files, dChecker allows you to select specific traces in order to quickly scan for problematic issues. The software will compare fields between headers to ensure consistency within your SEG-D records, and produces technical descriptions for the user on the nature of each specific issue.

dChecker will efficiently report any field and/or data structure violations, which are easily viewed within the main dChecker window. Furthermore, any information found during the validation process can be seen in more detailed PDF reports.

dChecker Recommended Usage:

Data Customers (e.g. Oil Companies or National Control Organizations)

Ensure that data conforms to specification


Ensure data and code implementation conforms to SEG-D standard

Software Developers

Instant checking of implementation using external SEG-D validator

Visualize decoded and raw format information

Data Processing

Locate problems in data, or data checkup before starting a job

Aid in the configuration of processing scripts.

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Troika International strives to bring you a truly independent consultancy service, where our main goal is to view your data system with a holistic approach. Rather than analysing and correcting individual aspects of your data management, we will ensure that the entire operation is running to maximum efficiency.

Troika International has an abundance of experience with seismic data formats, and our data experts, including multiple authors on various SEG Technical Standards Documents, can swiftly guide you to a correct solution.

With such an extensive background in seismic data, consulting with Troika guarantees a productive longevity to your data in order to carry your company’s assets safely into the future.

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Troika offers Consultancy, QC & Validation, & Training

Troika seismic data transcription and software services Troika services Troikas consultancy services Quality control and validation from troika software. The excellent training services of Troika international

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MidiStandardized SEG-D

MIDI is a SEG-D field data copy system providing the necessary tools to update your SEG-D library. It has long been recommended that digital data libraries be refreshed on a regular basis, with the figure of 10 years often mentioned. MIDI provides the opportunity to input the various historic versions of SEG-D and output standard SEG-D 2.1.

The SEG-D 2.1 format was recently ratified by the SEG Technical Standards Committee to improve support for high capacity media such as the IBM3592. The main aim was to allow the recording of multiple lines on a tape by use of a line sequence number.

Troika has developed a highly efficient SEG-D copy utility within MIDI. This crucial software provides the necessary tools to standardize your entire SEG-D library and transfer data from low-density, typically 9 track, 3480/3490 or 3590 to high capacity media (such as 3592). This package embraces the new SEGD 2.1 format which records a sequence number for each seismic line within a survey so that multiple lines may be written to tape.


MIDI can be interfaced to any standard SCSI devices via IBM/Windows drivers and "off-the-shelf" controllers including:

  • 9-track: 3480, 3490, 3490(E), 3590, 3592
  • Exabyte: 8500,8505, 8700
  • DLT
  • DAT
  • DVD
  • CD
  • etc.

Multiple drives may also be attached and run as separate job streams to increase throughput. MIDI includes support for a number of robotic devices including IBM3494 and STK9710, and also supports customized uploading of metadata to databases via XML.


A number of lists are created whilst transcription is being carried out, which may be used for quality assurance purposes, saving to disk, printout, etc. These lists include details of the data that has been read from and written to tape providing a machine-readable listing for import to a database, spread sheet for labeling, or documentation such as transmittals.

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maxim seismic software from Troika int
Maxim has been developed by Troika as a highly efficient Rode and Superfile creation and manipulation tool. Especially designed around the use of high capacity media, tape libraries, and robotic devices, Maxim runs on PCs running Microsoft Windows NT, 2000, XP and Vista, as well as Linux and Solaris workstations. Tape drives are accessed via standard SCSI adaptors (including adaptec/LSI/Qlogic), and with no practical block size limitation Maxim can drive high capacity tape drives at close to maximum speed. Maxim is implemented as a collection of command line tools written in object oriented C++, and presents a user friendly graphical user interface (GUI). Tape generation is controlled by XML files, which can be used to populate a client's database.
  • Used to create a Rode formatted tape from either Tap (Tif) or SEGY files on disk.
  • Using the Maxim GUI, an XML file is generated which contains a list of data to be outputted (which can either be a Rode file per original tape or per line/directory.
  • Full Robotic library support and density selection functions.
Maxim_Rode_list Used to create a list file detailing the TOC/Metadata from a Rode formatted tape.
Maxim_Rode_Read Used to read a tape containing one or more Rode images, and to transfer each image to disk as an individual Rode or Tap (Tif) file.
Maxim_Rode_Restore Used to restore the contents of a Rode tape to disk as either a Tap file (All non SEGY data) or a SEGY file, and to recreate an XML file of the tape contents.
Maxim_Rp66_copy Used to copy the contents of an RP66/Rode formatted tape to another tape, and to change the VSN number of the second tape.

Used to create a tape containing one or more Superfiles from tape images on disk.
The tape images to be written to tape are specified in an XML file. Each Superfile on
tape is separated by a DEOF (Double End of Filemark).


Used to read a tape containing one or more Superfiles and to write each Superfile to
disk as a Rode or Tap (tif) image. A Superfile can contain tape data in any format
e.g. SEG-D, and is terminated by two consecutive file marks.


Used to perform a bit to bit copy of one tape to another. The copy process terminates
when two consecutive file marks are read.


Used to perform a bit to bit comparison of the contents of two tapes. The comparison
process terminates when two consecutive file marks are read, or a miscomparison is

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Marlin Logo

Quite simply, Marlin is the best solution for finding and organizing vast amounts of seismic data on your system.

Marlin is a highly efficient disk trawling package, capable of quickly and easily scanning seismic data.

Marlin also has the capabilities of changing the encapsulation of specific seismic files and producing metadata reports in a variety of options. Marlin allows the user to define definitive rules

Therefore, Marlin gives the enhanced capabilities of scanning your entire seismic data library, altering the encapsulation of any files desired, and producing a variety of metadata report options.

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Designed to QC and rationalize your 3D seismic data, Minima3D offers many of the same user friendly interfaces as Minima to aid in the quality control and quality analysis of your 3D seismic data.

Various report options can be easily displayed for your SEG-Y data, including the option to extract specific metadata from all your EBCDIC headers to ease time consuming and costly individual analysis.

Time Slice sketches can be created by the user with customizable options for the displays to easily reveal trace locations and their amplitude ranges. Coverage sketches can also be displayed for your SEG-Y data to visualize any live and dead trace locations.

Data Source for Samples - US Department of Energy RMOTC - Rocky Mountain Oilfield Testing Centre 

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