Professional Well Log Viewer

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Log Visualization

Calculations

Reservoir

VSH

Porosity

Saturation

Reservoir Top Depth (m):

Reservoir Bottom Depth (m):

Interval Values

Curve	Min	Max	Average
Select reservoir interval and apply to see values

GR Clean (sand):

GR Shale:

Matrix Density (g/cc):

Fluid Density (g/cc):

Water Resistivity (Rw, ohm-m):

Saturation Exponent (n):

Cementation Exponent (m):

Tortuosity Factor (a):

Curve Selection

Gamma Ray Curve:

Sonic Curve:

Resistivity Curve 1:

Resistivity Curve 2:

Resistivity Curve 3:

Resistivity Curve 4:

Resistivity Curve 5:

Density Curve:

Neutron Curve:

LAS File Mnemonics

Raw Data Preview

Debug Information

Application Info & Help

Version: Beta
Made by: g6tools.com
Released: 29/04/2025
Contact: contact@g6tools.com

LAS file: Standard Log ASCII file format for well-log curves in ASCII text.
Diagraphies (Curves):
  • Gamma Ray (GR, API)
  • Bulk Density (RHOB, g/cm³)
  • Neutron Porosity (NPHI, fraction)
  • Sonic Travel Time (DT, µs/ft)
  • Resistivity (RT or ILD, ohm·m)

Formulas:
  V_sh = (GR_log – GR_min) / (GR_max – GR_min)
  Porosity (ϕ) = (RHOB_matrix – RHOB_log) / (RHOB_matrix – RHOB_fluid)
  Water Sat. (S_w) = [ (a / ϕᵐ) · (R_w / R_t) ]¹/ⁿ

Variables & Units:
  GR: API units
  RHOB: g/cm³
  NPHI, ϕ, V_sh: fraction (v/v)
  DT: µs/ft
  R_t, R_w: ohm·m
  a, m, n: dimensionless (Archie constants)