In-field processing

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Statics evaluation.
 
- processing up-hole velocity survey;
 
- statics evaluation;
 
- SPS filing;
 
- Topography management;
 
- Plotting lithologic columns based on up-hole velocity survey log;
 
- acquisition of additional data associated with seismic survey.
 
All data are submitted into the integrated field database and subsequently used for 
 
processing.
 
Up-hole velocity survey processing allows for computer processing of the well 
 
seismic survey data and includes the following:
 
- Input and automatic /manual/ picking of the first onsets on seismic data set;
 
- Travel-time plotting coupled with input of required corrections;
 
- real-time processing;
 
- calculation of datum statics by seismic source and receiver points;
 
- output of geological column and formation (reservoir) logging;
 
- basing of the processed data.
 
In-field seismic data processing includes the following processing procedures 
 
(eventually the seismic processing sequence is defined upon test survey):
 
- conversion into generic format;
 
- geometric input;
 
- geometric control;
 
- bad trace flagging;
 
- true amplitude recovery;
 
- statics correction process;
 
- corrective filtering;
 
- CDP ensemble stack;
 
- velocity analysis;
 
- residual statics correction;
 
- stacking;
 
- band-pass filtering;
 
- paper output of the tentative stacks.
 
- Additional processing procedures (at the customer’s request):
 
- FK- filtering by pre-stack data;
 
- spectral balancing by pre-stack data;
 
- FK- filtering by stacked section;
 
- spectral balancing by stacked section;
 
- additional paper output of the tentative stacks;
 
- additional data carrier (DVD, Exabyte, картридж) output.
 
Outcomes being transferred to the Customer - version libraries, stacks on paper and 
 
data carriers, SPS files.