Conventional Data

Rock Texture

Volume Clay

Lithology & Porosity Determination

Bulk Volume Water

Permeability

Flags

NUTECH begins the analysis using conventional log data such as Gamma Ray (GR), Spontaneous Potential (SP), resistivity, neutron porosity, density porosity and sonic porosity or a subset of these. On larger projects, NUTECH will normalize and edit the GR, SP, and porosity data.

Texture is determined by a layered physical model using maximum pore size, clay volume, and fluid mobility.

Using a proprietary process, NUTECH combines multiple shale indicators to calculate a clay volume, which closely matches X-Ray Di�raction analysis from cores.

The lithology process determines the volume of the mineralogic components. From the mineralogy, porosity is computed.

Computed Bulk Volume Water (BVW) is used to identify the amount of hydrocarbons versus the amount of water in the pore space. A robust method through the balancing of silt and shale components combined with apparent wet zone conductivityis utilized for Rw determination.

Permeability is calculated using e�ective porosity, and pore size distribution, which includes a component of pore connectivity. This yields a permeability, which is directly calibrated to core and/or production.

NuTech's grading system indicates the risk rating applied to each zone. The number of flags increases as the quality and productivity of each identified zone increases. At least three flags are needed to indicate if a zone qualifies in the net pay determination.