Schlumberger

Mnemonics, Tools, CFRT


CodeCFRT
TechnologyResistivity
DisciplinePetrophysics
MethodWIRELINE
DescriptionCased-hole Formation Resistivity

Related channels
ChannelDescription
ACYC Number of Acquisition Cycles for Casing, Top and Bottom Step
BOT_DIFV_MOD Bottom Step Differential Voltage Complex Module
BOT_DIFV_PH Bottom Step Differential Voltage Complex Phase
BOT_ITOT_MOD Bottom Step Total Injected Current Complex Module
BOT_ITOT_PH Bottom Step Total Injected Current Complex Phase
BOT_LCSV_MOD Bottom Step Lower Casing Segment Voltage Complex Module
BOT_LCSV_PH Bottom Step Lower Casing Segment Voltage Complex Phase
BOT_UCSV_MOD Bottom Step Upper Casing Segment Voltage Complex Module
BOT_UCSV_PH Bottom Step Upper Casing Segment Voltage Complex Phase
CAS_DIFV_MOD Casing Step Differential Voltage Complex Module
CAS_DIFV_PH Casing Step Differential Voltage Complex Phase
CAS_ITOT_MOD Casing Step Total Injected Current Complex Module
CAS_ITOT_PH Casing Step Total Injected Current Complex Phase
CAS_LCSV_MOD Casing Step Lower Casing Segment Voltage Complex Module
CAS_LCSV_PH Casing Step Lower Casing Segment Voltage Complex Phase
CAS_UCSV_MOD Casing Step Upper Casing Segment Voltage Complex Module
CAS_UCSV_PH Casing Step Upper Casing Segment Voltage Complex Phase
CAS_VINJ_MOD Casing Step Injection Voltage Complex Module
CAS_VINJ_PH Casing Step Injection Voltage Complex Phase
CBLO Casing Bottom Logger
CSIZ Current Casing Size
EFR Excitation Frequency
ELECTRODE_IDENTIFIER Identifier of Used Tool Electrode
IFOR_BOT Measured Formation Current from Bottom Step
IFOR_TOP Measured Formation Current from Top Step
IOFF_BOT Formation Current Offset for Bottom Step
IOFF_TOP Formation Current Offset for Top Step
KFAC_CFRT CFRT Resistivities Multiplication Factor for Measured Voltage Method
LCSM Lower Casing Segment Relative Magnetic Permeability
LCSR Lower Casing Segment Resistance
LCST Lower Casing Segment Thickness
LDRDCV Long Distance Resistance from DC Voltage Step
LDRDEP Depth of LDRDCV Measurement
LEVELSTATUS_BITMAP Status of the Recorded Level
LOCALTIME_VECTOR Local Time in seconds since 1-jan-1970
RTCH Formation Resistivity from CFRT
RTCH_COMPUTE_METHOD Selected Resistivity Compute Method for RTCH
SGMA Casing Conductivity
STEPNUM_VECTOR Measurement Step Number
TOP_DIFV_MOD Top Step Differential Voltage Complex Module
TOP_DIFV_PH Top Step Differential Voltage Complex Phase
TOP_ITOT_MOD Top Step Total Injected Current Complex Module
TOP_ITOT_PH Top Step Total Injected Current Complex Phase
TOP_LCSV_MOD Top Step Lower Casing Segment Voltage Complex Module
TOP_LCSV_PH Top Step Lower Casing Segment Voltage Complex Phase
TOP_UCSV_MOD Top Step Upper Casing Segment Voltage Complex Module
TOP_UCSV_PH Top Step Upper Casing Segment Voltage Complex Phase
UCSM Upper Casing Segment Relative Magnetic Permeability
UCSR Upper Casing Segment Resistance
UCST Upper Casing Segment Thickness
ZINJ Casing Step Injection Impedance Complex Module

Related parameters
ParameterDescription
ACYC Acquisition Sine Wave Cycles
COMPUTE_SUPERPOS Compute Superposition Step from Top and Bot
CREN Current Return Path
DEPTH_OFFSET_METHOD Depth Offset Application Method
DISPLAY_SUPERPOS_BOT Display Resistivities from Superposition with Bottom
DISPLAY_SUPERPOS_TOP Display Resistivities from Superposition with Top
EFR Excitation Frequency
FRMI Frequency Scale Minimum
INTERVAL Command Repeat Interval
ITOT_SURFACE Total Injected Current Measured by Surface Power Supply
KFAC_CFRT CFRT Resistivities Multiplication Factor
LDRDCV Long Distance Resistance Measured in DcVolt Step
MAX_VINJ Maximum Downhole Current Source Voltage Threshold
MIN_ITOT Minimum Valid Total Injection Current Amplitude
MIN_ZINJ Minimum Casing Injection Impedance Threshold
PLO1 Depth Offset Plot Curve REF1
PLO2 Depth Offset Plot Curve REF2
PLO3 Depth Offset Plot Curve REF3
PLTA PDS File Tail Lenght Above and Below CFRT Data Points
REF_DEPTH_UNIT Reference Curve File Depth Units
REF1_DEPTH_COL ASCII File Column For REF1 Depth Value
REF1_RESIS_COL ASCII File Column For REF1 Resistivity Value
REF2_DEPTH_COL ASCII File Column For REF2 Depth Value
REF2_RESIS_COL ASCII File Column For REF2 Resistivity Value
REF3_DEPTH_COL ASCII File Column For REF3 Depth Value
REF3_RESIS_COL ASCII File Column For REF3 Resistivity Value
REPEAT Number of Times to Repeat the Command
RTCH_COMPUTE_METHOD CFRT Resistivity Computation Method
TIMEZONE Difference Between Localtime and UTC
WFOR Waveform Acquisition On or Off


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