SeisNav Resolve 'Near Trace Cube' and 'Shooting Navigation' software
has been used to QC 3D seismic data totaling more than 200,000 CMP Kms.
successful package consistently identifies problems with navigation and
seismic data. Data may be checked in the field or in-house by merging
the seismic single traces with the field or processed navigation data.
Problem data sets can be identified before they can make an impact on
production or 3D bin coverage requirements.
detected using the 'Near Trace Cube' and 'Shooting Navigation' tools
smoothing of field/processed data
in source array centers
laybacks to center source
Nav Display of streamer data
Resolve has extensive merging capabilities including:
navigation and survey coordinates into the headers of a seismic SEG
file merge (P1/84, P1/90, SPS)
file merge (SEG P1) using Excel to input match. Digital observer
logs created by other systems are easy to convert.
merges can use any collection of ASCII files. Single record digital
observer logs can input directly and can specify merge of any combination
of coordinate files.
D tape input in flow with inline merge.
to tape merge.
basedc on SEG D time stamp and the nearest navigation file time stamp.
These can be adjusted by any constant amount.
stamp merge. The most recently surveyed coordinate as of the time of
the shot will be used allowing receivers to move over time.
binning to a prospect definition during merge allows collection of important
inline and crossline gathers.
creation with 'Inline Merge' processor. Allowing different groups of
traces to be output to different files, or any header manipulation desired.
of P1/84 and P1/90 compressed files. Compression can reduce file sizes
by up to 75:1.
merges have proven themselves to be fully scalable processors capable
of handling both small and large jobs with ease. SeisNav Resolve
has been used both for merging near traces in deep water marine surveys
and merging full shot records in large land and OBC jobs.
from the merge, like all Resolve SEG Y files, is ready for import into
other processing systems such as ProMax.
SEG P1 for land nav merge
FFID to Source for mairine nav merge
goal of SeisNav Resolve's Geometry QC package is to ensure that source
and receiver coordinates are accurate and consistent with the seismic
data. This can be performed real-time, or after the survey is complete.
If performed real-time, all bad points discovered using the system may
be re-surveyed in the field (if possible). If performed after completion,
Resolve can create an approximation of the actual position. Results from
all tasks can be displayed in the Resolve displays to depict problems
Geometry QC results are achieved by using the seismic data with the navigation
data. An important benefit of using the seismic data is that all coordinates
used will be merged into the headers of the SEG Y files. These can be
output to tape for a head start on processing.
Geometry QC features include:
of field coordinate sets, e.g. computed vs. preplot or acoustic vs.
of coordinates overlaid on a topography map (if available).
coordinate displays verifying the consistency between source and receiver
coordinates into the headers of the seismic data.
Edit Display' can be used to view seismic with computed first break
times overlaid and LMO flat plots.
Nav' display allows viewing of geometry and seismic on the same screen.
Navigation' process for batch first break picking and coordinate computation.
Workshop' for visual batch and interactive coordinate computation and
first break picking.
trace cube verifying coordinate consistency.
- 3D stack
further verifying coordinate consistency with the seismic.
of new survey/navigation files.
Edit Display of computed first breaks
Workshop in single point mode