+7 (347) 272-60-24
Ufa, Lenin st. 13
RUS | ENG

We offer


Borehole seismic prospecting with the use of modern geophysical equipment enabling to solve the following geological and technological problems arising at the stages of prospecting and development of deposits:
The quality of field works by the team is controlled at all stages:
  • control over surveying quality (accuracy of source point and receiver points referencing and determination, quality of seismic profiles preparation);
  • control over source point quality (accuracy of its location, depth of charge laying, plugging quality, explosion fullness);
  • control over recording system (receiving arrangement and recording equipment);
  • control over field primary materials quality;
  • preliminary data processing at the field processing center.

Sequence of daily field processing:
  • Data input.
  • Assignment of geometry.
  • Control over geometry assignment quality by the first arrivals (visual) and visualization of actual receiver point-source point layout on a landscape basis.
  • Data editing (visual).
  • Assessment of average weighted amplitudes and microseisms spectrum in the window before the first arrivals in an offset range (common source point, common receiver point seismic logs).
  • Assessment of surface waves average amplitude (common source point seismic logs).
  • Assessment of signal average amplitude in the target reflection interval.
  • Assessment of ratio (signal amplitudes) / (microseisms amplitudes).
  • Assessment of common source point spectra in Neocomian reflections interval (visible frequency).
  • Terrain statics input (datum surface substantiation).
  • Muting.
  • Spherical divergence correction of amplitudes.
  • Deconvolution.
  • Editing, creation of libraries, statistics.
  • Band filtration in the optimal frequency band.
  • Data saving after deconvolution.
  • Alignment of seismic events within a seismic log with reflection display on an isochron (by a reliable benchmark).
  • Assessment of seismic data quality in seismic logs without editing by automatic and mutual correlation function (data of cl. 15).
  • Report with opinions on quality and requisite repeated observations.

Report on the results of daily processing and assessment of field materials quality includes:
  • Tables: revisions, static corrections, kinetic corrections, rejected physical observations.
  • Maps on topographic base (if required):
           - Terrain mapping by elevations of source point and receiver point amplitudes.
           - T_uphole mapping on a landscape basis with inadmissible values cutoff. 
           - V_uphole mapping on a landscape basis with inadmissible value cutoffs.
           - Visible periods (peak frequencies) mapping on a landscape basis.
           - Average weighted amplitudes map of common source point surface waves.
           - Average amplitude mapping for common receiver point microseism.
           - Average amplitude mapping for common source point microseism.
           - Average amplitude mapping for a common source point signal.
           - Ratio mapping (A signal) / (A microseism) (common source point).
           - Charge depth mapping on a landscape basis.
           - A signal / A coherent interference mapping (common receiver point).
           - Opinion on quality of works and materials with indication of rejected field log surveys.

Sequence of additional processing after shooting another unit:
  • Preparation of data for velocity analysis and automatic correction of statics - band filtration and automatic gain control.
  • Analysis of stacking velocity.
  • Automatic correction of statics.
  • Input of kinematic and static corrections.
  • Band filtration in the optimal frequency band.
  • Multi-channel filtration.
  • Stacking by common average points.
  • Assessment of seismic data quality after editing and stacking by automatic and mutual correlation function in an optimal frequency band.
  • Assessment of fold (common, by offsets, by azimuths).
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