Category

Petrophysics

86 items

Pair production (gamma ray interactions)

6.51

Phillips equation (sandstones)

6.52

Photoelectric absorption cross sectional area

6.53

Pickett crossplot

6.54

Poisson’s ratio (seismic arrival time method)

6.55

Porosity by using density log data

6.56

Porosity corrected for gas effect

6.57

Porosity-neutron flux relationship

6.58

Rate of radioactive decay

6.59

Relation between concentration of K, Th, or U and recorded total gamma ray signal

6.60

Relationship between rock resistivity and water saturation

6.61

Relationship between SSP and Rw (NaCl predominant)

6.62

Relationship between SSP and Rw (non-ideal shale membrane)

6.63

Relationship between SSP and Rw for water containing salts (non-NaCl predominant)

6.64

Resistivity of a partially saturated shaly sand with hydrocarbons (Vsh models)

6.65

Resistivity of a water-saturated shaly sand (Vsh models)

6.66

Rock conductivity (relatively clean water bearing rocks)

6.67

Shale index from gamma ray spectrometry

6.68

Simandoux (total shale) equation

6.69

Sonic porosity (Raymer Hunt Gardner method)

6.70

Spacing between transmitter and receiver

6.71

Static self potential

6.72

Time between the initiation of the pulse and the first arrival acoustic energy at the receiver

6.73

Time-average relation in compacted formations (porosity/transit time relationships)

6.74

Time-average relation in uncompacted formations (porosity/transit time relationships)

6.75

Tortuosity (resistivity logs)

6.76

Total rock conductivity

6.77

True porosity from sonic log (corrected for compaction)

6.78

True resistivity – Archie

6.79

Volumetric photoelectric absorption cross section

6.80

Water salinity index ratio

6.81

Water saturation determination (IE and CDN logs)

6.82

Water saturation from neutron tools

6.83

Water saturation – Resistivity logs

6.84

Wavelength equation

6.85

Wellbore electric voltage generation

6.86