Geomatics Press Releases

IOGP releases version 1.1 of the P6/11 Seismic bin grid data exchange format

(London) The International Association of Oil and Gas Producers (IOGP) has released version 1.1 of its P6/11 Seismic bin grid data exchange format (IOGP Report Number: 483-6).

The P6/11 Format Description was originally released in 2012 (version 1.0), alongside similar documents for its companion formats, the P1/11 and P2/11 (version 1.0). These replaced legacy formats P1/90, P2/94 and P6/98.

The P1/11 and P2/11 were subsequently revised to version 1.1 in April 2015 (more information about P1/11 and P2/11 version 1.1 can be seen at  https://www.iogp.org/blog/2015/05/20/iogp-releases-version-1-1-of-geophysical-position-data-exchange-formats-2). The P6/11 has now been also revised to version 1.1 in response to the changes in the P1 and P2/11 formats, with which it shares common elements.

The revision of P6/11 has been used as an opportunity to introduce enhancements to the format and improvements to the documentation that have been incorporated as a result of feedback from industry. The main changes to the format and to the documentation are summarised below.

Changes to the format:

  • Changes as required to align with version 1.1 of P1/11
  • Some records previously mandatory re-classified as optional
  • New H6,3,0,0 header record for Bin Grid Attributes and associated parameter BINGRIDATTREF, mandatory for format-defined attributes 1-6 (introduced mainly to relate axis names to field acquisition unambiguously)
  • All B6 bin node position records must have both bin grid and map grid coordinates (not just first record)

Changes to the documentation:

  • Clarification of the definition of a bin grid (transformation parameters are an inherent part of the definition)
  • Escape sequence described for the degree symbol (°) as used in EPSG operation method codes for right- & left-handed bin grid definitions (° falls outside allowed ASCII character range)
  • Handling of coordinate conversions between base & derived CRSs explained
  • P6-specific format examples introduced
  • Recommendation to include base CRS in name if bin grid
  • Recommendation on use of example points for a bin grid
  • Recommendation to produce a bin centres file if bin grid becomes non-rectilinear or irregular after re-projection
  • New Appendix (C) with example of bin grid history – step-by-step explanation and complete P6/11 file
  • Appendix D (minimum requirements) adjusted to the changed requirements

The IOGP Geomatics Committee is currently completing a P6/11 User Guide which will be issued later in 2017. The User Guide will support the Format Description document.

All IOGP ‘P Formats’ Reports are publicly available via IOGP Bookstore.

Download PDF
Back to top button