Troika is a leading participant in the SEG Technical Standards Committee and has been highly active in promoting best seismic data management practices through articles and presentations in upstream oilfield publications and international conferences. Troika also provides the chosen front end plug-in for major seismic data management and processing systems including Halliburton’s SeisSpace ProMax software family.

Troika Brochure

Click here to view and download the Troika Brochure

Upcoming Events
March 25, 20244th EAGE Digitalization 2024

25th – 27th March 2024, Paris, France.

Delivering better energy in a transforming world.

May 1, 2024Seismic 2024

1st – 2nd May 2024, Aberdeen, Scotland

The event will explore how seismic sustainably supports the UK’s energy security and Net Zero obligations.

June 10, 2024EAGE Annual 2024

10th – 13th June 2024, Oslo, Norway.

Technology and talent for a secure and sustainable energy future.

August 26, 2024SEG Image 2024

26th – 29th August 2024, Houston, Texas.

IMAGE ’24 highlights traditional petroleum geoscience topics while uncovering the latest energy market trends, science, and opportunities.

September 16, 2024ECIM 2024

16th – 18th September 2024

Details coming soon.

SEG-Y Seismic Data Exchange Format

A useful chart which shows the differences between SEG-Y rev0, rev1, rev2, and rev2.1. Published in Agile‘s blog post by Matt Hall, SEGY-Y Rev 2 again: Little-Endian is Legal!

For a printable copy – SEG-Y Revision Format Chart PDF.


Halliburton’s iEnergy® provides an easily accessible eLearning centre with E&P tools and resources, looks at industry standards and trends and encourages partner and customer relationships.  

Troika are pleased to be an iEnergy Community Partner.  

SEG Standards

Troika Managing Director Jill Lewis and Vice President Victor Ancira are past Chairs of the Committee and led a team that prepared the specifications for SEG-Y revision 2.0. The Committee serves as a forum for the discussion of geophysical developments in which standards for acquisition and processing of geophysical data need to be identified or improved. When data problems of a sufficient magnitude to warrant action by SEG are identified, an appropriate subcommittee is appointed to develop a set of standards and make a recommendation to the Executive Committee concerning their adoption.
Learn more about SEG Technical Standards 


SEG-Y has been the default standard for storing and exchanging processed seismic data since it was published in 1975. A revision in 2002 extended the standard to handle 3D acquisition and high-capacity media. Since then, extensive developments in data acquisition and processing capabilities such as time-lapse (4D), multicable, multicomponent and seabed data have continued to evolve, requiring a further revision of the format to ensure accurate capture of the data and associated metadata to future-proof valuable information on tape or disk.

In addition to previous capabilities, SEG-Y revision 2.0 provides for up to 65,535 additional 240-byte trace headers for metadata, more than 4 billion samples per trace, variable sample intervals and trillions of traces per line or ensemble. The revised format also supports additional data sample formats including IEEE double precision (64 bit), little-endian and pair-wise byte swapping to improve I/O performance, microsecond accuracy in time and date stamps and additional precision on coordinates, depths and elevations.
SEG-Y_rev2 March 2017


Troika is a member of the OSDU Forum.

Click here to visit the Forum for further information.

Format and Tape Capabilities

The Magma software allows the user to determine and subsequently read all standard SEG recognised field and non-field seismic data formats. These include all current versions of the SEGD field format as well as legacy multiplexed field formats SEGA, SEGB, and SEGC. All versions of SEGY can be read, including the latest SEGY Rev 2.

There are additional modules available that allow the user to read non-standard sequential and non-sequential tape formats. These can be specifically customised by the user to achieve this.

Legacy media can also be handled. These include:

  • 9-track tape
  • 21-track tape
  • IBM 3480/3490/3590 cartridge
  • DLT
  • LTO
  • Exabyte
  • DAT 4mm

Seismic data can also be copied from tape to disk as an exact copy as found on the input media using an internal encapsulation. The data can then be investigated, prior to reading and subsequent output.


Troika are sole agents in the seismic industry for the VeriTape® reader, a premier tool for diagnosing the health of Linear Tape Open (LTO) and 3592 tape cartridges.

Click here for further information.

Troika's understanding of seismic data is second to none

The Troika team has been involved with the SEG Technical Standards Committee since 1999. Members including Bob Firth, Jill Lewis and Victor Ancira have been driving the development, review and ratification processes of modern industry standards such as SEG-Y 1, SEG-Y 2, SEG-D 2.1, SEG-D 3 and SEG-D 3.1. The result is we understand seismic data recording formats better than any other company.

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