Volumetric mineralogical model

An inverse mineralogical model that solves porosity, shale and mineral fractions simultaneously — returning a continuous volumetric composition of the rock across the whole field.

Building the model

• Data preparation in a dedicated LQC dataset.
• An ordered set of algorithms solves the model from the input suite.
• Results are displayed directly and the produced curves and groups are reviewed.

Calibration and rock typing

• Constant calibration — end-member densities, matrix and fluid constants calibrated to core / cuttings.
• Rock typing — determination of reservoir type as an input to the inversion.

Joint inversion

• Solves porosity, shale and mineral fractions simultaneously across GR, density, neutron and resistivity.
• Returns a continuous volumetric mix — the foundation for reserves estimation and flow models.
• Ignores no input: the solver balances every curve against the mineral model.

Permeability

• Permeability is derived from the resulting volumetric model.

Operation and tuning

• Node parameters and control flags let the interpreter change the model without rebuilding it.
• The model can be inspected in its unsolved state to verify inputs.
• Field-wide runs process thousands of wells in a single batch with consistent rules.

This page summarises the Volumetric-model section of the Wellbore.AI / Gamma technical manual.

← Back to features