Schlumberger

Mnemonics, Tools, CDN


CodeCDN
TechnologyNuclear
DisciplinePetrophysics
MethodMWD
DescriptionCompensated Density Neutron Tool

Related channels
ChannelDescription
ADIA Average Borehole Diameter
CIMA CDN Status Bit
DCAL_CDN Differential Caliper
DPHI Density Porosity
DPHM Density Porosity from NROM
DPHN_CDN Density Porosity from NRHO
DPOR_CDN Density Porosity
DRHO_CDN Density Correction
DRHO_DH_CDN_RT Bulk Density Correction, Real-Time Computed Downhole
DROR Bulk Density Rotational Correction
DROR_RT Bulk Density Rotational Correction, Real-Time
DSAM_CDN Density Samples of This Frame, 0.1 ft
DWL4 Raw Long Spacing Density Window 4 Count Rate
DWL4_P1F Raw Long Spacing Density Window 4 Count Rate, 0.1 ft
DWL5 Raw Long Spacing Density Window 5 Count Rate
DWL5_P1F Raw Long Spacing Density Window 5 Count Rate, 0.1 ft
DWS1 Raw Short Spacing Density Window 1 Count Rate
DWS1_P1F Raw Short Spacing Density Window 1 Count Rate, 0.1 ft
DWS3 Raw Short Spacing Density Window 3 Count Rate
DWS3_P1F Raw Short Spacing Density Window 3 Count Rate, 0.1 ft
EFRA_CDN Echo-Firing Ratio
GASP Gas Probability
GASP_CDN_RT Gas Detection Parameter, Real-Time
HEND_RT Near Helium Bank Total Counts, Real-Time
LDIA Long Axis Ultrasonic Caliper
LDIA_RT Long Axis Ultrasonic Caliper, Real-Time
LSFR Long Spacing Sigma of Fast (10HZ) Sample Rate
LSHV_CDN High Voltage for Long Spacing Loop
LSSR Long Spacing Sigma of Slow (5HZ) Sample Rate
LTBV_CDN CDN Low Power Tool Bus Voltage
NRHO Bulk Density, Enhanced Vertical Resolution
NROM Maximum Bulk Density, Enhanced Vertical Resolution
NSAM_CDN Neutron Samples of This Frame, 0.1 ft
NSSW CDN Status Word
PEF_CDN Photoelectric Factor
PEF5_RT Photoelectric Factor(5-DPoint Mode), Real-Time
PERA Photoelectric Ratio
PHIT_C Total Porosity, Clay-Corrected
RHEN Raw Near Helium Bank Count Rate
RHF1 Raw Far Helium Bank 1 Count Rate
RHF2 Raw Far Helium Bank 2 Count Rate
RHF3 Raw Far Helium Bank 3 Count Rate
RHF4 Raw Far Helium Bank 4 Count Rate
RHN1 Raw Near Helium Bank 1 Count Rate
RHN2 Raw Near Helium Bank 2 Count Rate
RHN3 Raw Near Helium Bank 3 Count Rate
RHN4 Raw Near Helium Bank 4 Count Rate
RHOB_ALP Bulk Density at 0.1 ft Resolution
RHOB_CDN Bulk Density
RHOB_DH_CDN_RT Bulk Density, Real-Time Computed Downhole
RHOL5_RT Long Spacing Bulk Density(5-DPoint Mode), Real-Time
RHOS5_RT Short Spacing Bulk Density(5-DPoint Mode), Real-Time
ROLS Long Spacing Bulk Density
ROLS_ALP Long Spacing Bulk Density at 0.1 ft Resolution
ROMT_ALP Alpha Processed Bulk Density, Rotationally Corrected
ROMT_CDN Maximum Bulk Density
ROMT_CDN_RT Maximum Bulk Density, Real-Time
ROMT_DH_CDN_RT Maximum Bulk Density, Real-Time Computed Downhole
ROS1 Short Spacing Bulk Density
RWA_RT Apparent Formation Water Resistivity, Real-Time
SDIA Short Axis Ultrasonic Caliper
SDIA_RT Short Axis Ultrasonic Caliper, Real-Time
SDSF Short Density Window 3 Standard Deviation, Fast(10Hz)
SDSF_P1F Short Density Window 3 Standard Deviation, 0.1 ft, Fast(10Hz)
SHK1_CDN CDN Shock Rate, over 200g
SHK2_CDN CDN Shock Rate, over 50g
SSHV High Voltage Output for SS Loop
TAB_DEN_CDN Density Time After Bit
TAB_NEU_CDN Neutron Time After Bit
TICK_DEN_CDN Density Ticks, 0.1 ft
TICK_NEU_CDN Neutron Ticks, 0.1 ft
TNP1_CDN Thermal Neutron Porosity, Bank 1
TNP2_CDN Thermal Neutron Porosity, Bank 2
TNP3 Thermal Neutron Porosity, Bank 3
TNP4 Thermal Neutron Porosity, Bank 4
TNPH_CDN Thermal Neutron Porosity (Ratio Method) in Selected Lithology
TNR1_CDN Thermal Neutron Ratio, Bank 1
TNR2_CDN Thermal Neutron Ratio, Bank 2
TNR3 Thermal Neutron Ratio, Bank 3
TNR4 Thermal Neutron Ratio, Bank 4
TNRA_CDN Thermal Neutron Ratio
TNRA_CDN_RT Thermal Neutron Ratio, Real-Time
TRAA Thermal Neutron Ratio, Real-Time
TTEM_CDN CDN Tool Temperature
U_CDN Volumetric Photoelectric Factor
U_RT Volumetric Photoelectric Factor, Real-Time

Related parameters
ParameterDescription
ANGL Average Angle of Well
HC Hole Correction
MDEN Matrix Density for Density Porosity
MWCO Mud Weight Correction Option
SOCN Standoff Distance
SOCO Standoff Correction Option
WMUD Weight of Mud


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