Conventional Seismic 2D/3D CDP Data Processing includes:

  • All kinds of noise reduction and signal processing procedures (trace-by-trace and multichannel filtering in both time-space and Fourier domains, simple and surface-consistent deconvolution, Q-compenstation, amplitude recovery and balancing procedures)
  • Statics estimation and velocity analysis (including refraction statics, vertical and horizontal velocity analysis, NMO and RMO autopicking, DMO analysis)
  • AVO analysis
  • Different kinds of time migration, both post-stack and pre-stack – Kirchhoff, Stolt, Phase Shift.
  • Isotropic depth model building and depth migration (Kirchhoff, Wave-Equation-based)
  • Anisotropic depth model building and azimuthal depth migration

INPUT DATA

  • Seismic 2D/3D initial data in form of seismograms in SEG-Y format before migration, which have undergone standard processing (filtering, deconvolution, amplitude recovery, surface-matched amplitude equalization, multiple subtraction), with static applied, NO NMO (normal moveout) correction applied. The titles of the traces must contain coordinates of sources, receivers, CDP (Common Depth Point), inline and crossline numbers and SPS files.
  • Velocity model (Vrms – final velocities for time migration) is provided in a text file in format: X, Y, t, Vrms (columns separated with space). The record parameters of CDP grid – X0, Y0, number of inlines, number of crosslines, and azimuth are also transmitted.
  • The processing report (with the description of all the performed procedures and parameters).
  • Wellhead and wellbore coordinates and inclinometry in electronic form.
  • Test, sampling, well drilling data.
  • Skin effect information and reports about curves pressure changing analysis.
  • GIS curves: apparent resistance, radiation downhole survey, well diameter, acoustic logging, gas and mechanical logging and other special methods aimed at detecting fractured reservoirs (FMI) in LAS-format.
  • Description of target interval samples, laboratory studies of reservoir properties, quantitative GIS data interpretation, conclusions based on GIS data interpretation.
  • Vertical Seismic Profiling, VSP (Vs, Vp from surface to target horizons and deeper) and seismic logging data.
  • Stratigraphic breakdowns of well sections and reflecting horizons identification.
  • Geology, structural maps of the main reflected horizons and prospect maps of oil and gas occurrence in vector format (Surfer, CorelDraw, CGM, etc.), grids of these maps. Reflective horizons (T0) in electronic text format.
  • A report of seismic survey on research area in electronic form.
  • WLD report (porosity, permeability, formations top – TVD, TVDSS for target horizon), production test, production history.