Nuclear
Porosity, Permeability, and Lithology for Formation Evaluation
Accurate measurement of the fundamental petrophysical properties of porosity, permeability, and lithology of a formation is the foundation of reservoir evaluation and a necessary input for simulation.
Density tools provide measurements of formation density, formation photoelectric factor, and borehole diameter. Density data is used to calculate porosity and determine lithology.
Compensated neutron tools measure the hydrogen index of formations. The measurements are converted to porosity values, which in combination with density tool measurements provide an indication of lithology and gas in zones of interest. Some compensated neutron tools provide thermal and epithermal measurements.
Complex lithology can be fully resolved by using services that employ neutron-induced capture gamma ray spectroscopy.
Correlate logs in cased and open holes by measuring naturally occurring gamma rays in the formations adjacent to the wellbore.
Measure relative elemental yields based on neutron-induced capture gamma ray spectroscopy.
Get highly integrated petrophysical answers in nearly real time to improve completion decisions.
Accounting for the reservoir heterogeneity of carbonate formations on a multiplicity of scales, Carbonate Advisor quantitative producibility and textural analysis is based on a comprehensive suite of petrophysical logging measurements.
Simplify porosity and lithology evaluation in difficult reservoirs.
Calculate porosity and identify lithology and the presence of gas using thermal and epithermal measurements.
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