Seismic Data (Re)processing

Seismic processing and reprocessing is one of the possible activities to maximize the output of available seismic data in oil and gas projects. Seismic (re-)processing can lead to a significant improvement of the original seismic data, which increases the odds of successful hydrocarbon exploration..AmsterdamPG is able to perform various methods of (re-)processing, including:
  • Data loading and Quality Control
  • Elevation, refraction en residual static corrections
  • Single channel processing (bandpass, gain, muting)
  • Pre-stack multichannel filtering (FK, Tau-P, FX)
  • Deconvolution
  • Velocity Analysis
  • Post-stack and pre-stack time/depth migration  

Seismic Reprocessing

One of the specialties of AmsterdamPG is reprocessing vintage seismic data from surveys in the 60's throughout the 90's. Especially unmigrated data with high noise levels can experience considerable enhancement by reprocessing.

A common problem with vintage seismic data is that deeper formations are often not properly imaged. The most important reason for this is improper migration. Lack of image focusing by under- and overmigration and resulting migration artefacts mask important horizons. Seismic signal-to-noise ratio is also sub-optimal at these deeper seismic reflections.

Since the first processing of vintage surveys, many new migration algorithms with superior imaging capabilities have been improved, such as turning-ray migration and reverse-time migration. AmsterdamPG can use these algorithms for the best imaging. Reprocessing is most effective on stacked data prior to migration (prestack). As this data is often not available, poststack processing is also possible, including advanced re-migration.

Further enhancements of the seismic data can be achieved by applying frequency-filtering, multichannel filtering and amplitude scaling, which can suppress left-over noise and migration artefacts for a cleaner image.

We employ GLOBE Claritas´┐Ż, Seismic Unix and HR Strata´┐Ż.