Schlumberger

Mnemonics, Software product, STC


CodeSTC
NameSlowness Time Coherence
DisciplinePetrophysics
TypeAPPLICATION
DescriptionSlowness Time Coherence Sonic Waveform Processing

Related channels
ChannelDescription
BS Bit Size
C1 Caliper 1
C1R1 STC Peak Coherence, Receiver Array - Lower Dipole
C1R2 STC Peak Coherence, Receiver Array - Upper Dipole
C1R3 STC Peak Coherence, Receiver Array - Monopole Stoneley
C1R4 STC Peak Coherence, Receiver Array - Monopole P&S
C1REX STC Peak Coherence, Receiver Array - Expert Mode
C1T1 STC Peak Coherence, Transmitter Array - Lower Dipole
C1T2 STC Peak Coherence, Transmitter Array - Upper Dipole
C1T3 STC Peak Coherence, Transmitter Array - Monopole Stoneley
C1T4 STC Peak Coherence, Transmitter Array - Monopole P&S
C1TEX STC Peak Coherence, Transmitter Array - Expert Mode
C2 Caliper 2
C2REX STC Energy Peak Coherence, Receiver Array - Expert Mode
C2TEX STC Energy Peak Coherence, Transmitter Array - Expert Mode
C3 Double R1 Radius (HDT)
C4 Double R4 Radius (HDT)
CAL1 Caliper 1
CAL2 Caliper 2
CALI Caliper
CALS Micro Resistivity Caliper
CENFRQ Processing Band Center Frequency
CER0 Energy Peak Coherence, Receiver Array - SDT Stoneley
CER3 Label Energy Peak Coherence, Receiver Array - Monopole Stoneley
CEREX LABEL Energy Peak Coherence, Receiver Array - Expert Mode
CERP Label Energy Peak Coherence, Receiver Array, Compressional - Monopole P&S
CERS Label Energy Peak Coherence, Receiver Array, Shear - Monopole P&S
CET0 Energy Peak Coherence, Transmitter Array - SDT Stoneley
CET3 Label Energy Peak Coherence, Transmitter Array - Monopole Stoneley
CETEX LABEL Energy Peak Coherence, Transmitter Array - Expert Mode
CETP Label Energy Peak Coherence, Transmitter Array, Compressional - Monopole P&S
CETS Label Energy Peak Coherence, Transmitter Array, Shear - Monopole P&S
CHE Coherent Compressional Energy
CHR0 Label Peak Coherence, Receiver Array - SDT Stoneley
CHR1 Peak Coherence, Receiver Array - Lower Dipole
CHR2 Peak Coherence, Receiver Array - Upper Dipole
CHR3 Peak Coherence, Receiver Array - Monopole Stoneley
CHREX LABEL Peak Coherence, Receiver Array - Expert Mode
CHRP Peak Coherence, Receiver Array, Compressional - Monopole P&S
CHRS Peak Coherence, Receiver Array, Shear - Monopole P&S
CHT0 Label Peak Coherence, Transmitter Array - SDT Stoneley
CHT1 Peak Coherence, Transmitter Array - Lower Dipole
CHT2 Peak Coherence, Transmitter Array - Upper Dipole
CHT3 Peak Coherence, Transmitter Array - Monopole Stoneley
CHTEX LABEL Peak Coherence, Transmitter Array - Expert Mode
CHTP Peak Coherence, Transmitter Array, Compressional - Monopole P&S
CHTS Peak Coherence, Transmitter Array, Shear - Monopole P&S
COHC Coherence Value at Compressional Peak
COHS Coherence Value at Shear Peak
COST Coherence Value at Stoneley Peak
DLOG Dot Log
DT0P Delta-T Compressional - P & S Mode (SDT)
DT0S Delta-T Shear - P & S Mode (SDT)
DT0T Delta-T Stoneley
DT1 Delta-T Shear - Lower Dipole
DT1R Delta-T Shear, Receiver Array - Lower Dipole
DT1T Delta-T Shear, Transmitter Array - Lower Dipole
DT2 Delta-T Shear - Upper Dipole
DT2R Delta-T Shear, Receiver Array - Upper Dipole
DT2T Delta-T Shear, Transmitter Array - Upper Dipole
DT3R Delta-T Stoneley, Receiver Array - Monopole Stoneley
DT3T Delta-T Stoneley, Transmitter Array - Monopole Stoneley
DT4P Delta-T Compressional - Monopole P&S
DT4S Delta-T Shear - Monopole P&S
DTCO Delta-T Compressional
DTEXR Delta-T Shear, Receiver Array - Expert mode
DTEXT Delta-T Shear, Transmitter Array - Expert mode
DTR0 Delta-T, Receiver Array - SDT Stoneley
DTRP Delta-T Compressional, Receiver Array - Monopole P&S
DTRS Delta-T Shear, Receiver Array - Monopole P&S
DTSM Delta-T Shear
DTST Delta-T Stoneley - Monopole Stoneley
DTT0 Delta-T, Transmitter Array - SDT Stoneley
DTTP Delta-T Compressional, Transmitter Array - Monopole P&S
DTTS Delta-T Shear, Transmitter Array - Monopole P&S
E1REX STC Peak Energy, Receiver Array - Expert Mode
E1TEX STC Peak Energy, Transmitter Array - Expert Mode
E2REX STC Energy Peak Energy, Receiver Array - Expert Mode
E2TEX STC Energy Peak Energy, Transmitter Array - Expert Mode
EER0 Energy Peak Energy, Receiver Array - Stoneley
EER3 Label Energy Peak Energy, Receiver Array - Monopole Stoneley
EEREX Label Energy Peak Energy, Receiver Array - Expert Mode
EERP Label Energy Peak Energy, Receiver Array, Compressional - Monopole P&S
EERS Label Energy Peak Energy, Receiver Array, Shear - Monopole P&S
EET0 Energy Peak Energy, Transmitter Array - SDT Stoneley
EET3 Label Energy Peak Energy, Transmitter Array - Monopole Stoneley
EETEX Label Energy Peak Energy, Transmitter Array - Expert Mode
EETP Label Energy Peak Energy, Transmitter Array, Compressional - Monopole P&S
EETS Label Energy Peak Energy, Transmitter Array, Shear - Monopole P&S
ENR0 Peak Energy, Receiver Array - SDT Stoneley
ENR3 Label Peak Energy, Receiver Array - Monopole Stoneley
ENREX LABEL Peak Energy, Receiver Array - Expert Mode
ENRP Label Peak Energy, Receiver Array, Compressional - Monopole P&S
ENRS Label Peak Energy, Receiver Array, Shear - Monopole P&S
ENT0 Peak Energy, Transmitter Array - SDT Stoneley
ENT3 Label Peak Energy, Transmitter Array - Monopole Stoneley
ENTEX LABEL Peak Energy, Transmitter Array - Expert Mode
ENTP Label Peak Energy, Transmitter Array, Compressional - Monopole P&S
ENTS Label Peak Energy, Transmitter Array, Shear - Monopole P&S
HD Hole Diameter
HDAR Hole Diameter from Area
HDOV Hole Diameter from Oval
HIGHFRQ Processing Band High Frequency
LA Large Arm Caliper
LCAL Density Caliper
LFR0 Label Flag, Receiver Array - SDT Stoneley
LFR3 Label Flag, Receiver Array - Monopole Stoneley
LFREX LABEL Flag, Receiver Array - Expert Mode
LFRP Label Flag, Receiver Array, Compressional - Monopole P&S
LFRS Label Flag, Receiver Array, Shear - Monopole P&S
LFT0 Label Flag, Transmitter Array - SDT Stoneley
LFT3 Label Flag, Transmitter Array - Monopole Stoneley
LFTEX LABEL Flag, Transmitter Array - Expert Mode
LFTP Label Flag, Transmitter Array, Compressional - Monopole P&S
LFTS Label Flag, Transmitter Array, Shear - Monopole P&S
LOWFRQ Processing Band Low Frequency
MCAL MLT (Microlog) Caliper
NPK Number of Peaks
NPR1 STC Number of Peaks, Receiver Array - Lower Dipole
NPR2 STC Number of Peaks, Receiver Array - Upper Dipole
NPR3 STC Number of Peaks, Receiver Array - Monopole Stoneley
NPR4 STC Number of Peaks, Receiver Array - Monopole P&S
NPREX Number of STC Peaks, Receiver Array - Expert Mode
NPT1 STC Number of Peaks, Transmitter Array - Lower Dipole
NPT2 STC Number of Peaks, Transmitter Array - Upper Dipole
NPT3 STC Number of Peaks, Transmitter Array - Monopole Stoneley
NPT4 STC Number of Peaks, Transmitter Array - Monopole P&S
NPTEX Number of STC Peaks, Transmitter Array - Expert Mode
PR Poisson's Ratio
RMSC Delta-T Shear/Delta-T Compressional Ratio
S1R1 STC Peak Slowness, Receiver Array - Lower Dipole
S1R2 STC Peak Slowness, Receiver Array - Upper Dipole
S1R3 STC Peak Slowness, Receiver Array - Monopole Stoneley
S1R4 STC Peak Slowness, Receiver Array - Monopole P&S
S1REX STC Peak Slowness, Receiver Array - Expert Mode
S1T1 STC Peak Slowness, Transmitter Array - Lower Dipole
S1T2 STC Peak Slowness, Transmitter Array - Upper Dipole
S1T3 STC Peak Slowness, Transmitter Array - Monopole Stoneley
S1T4 STC Peak Slowness, Transmitter Array - Monopole P&S
S1TEX STC Peak Slowness, Transmitter Array - Expert Mode
SAS1 Sonic Array Status - Lower Dipole
SAS2 Sonic Array Status - Upper Dipole
SAS3 Sonic Array Status - Stoneley
SAS4 Sonic Array Status - Monopole P&S
SHE Coherent Shear Energy
SLOW Slowness
SNREX STC Signal/Noise Ratio, Receiver Array - Expert Mode
SNTEX STC Signal/Noise Ratio, Transmitter Array - Expert Mode
SPR1 STC Slowness Projection, Receiver Array - Lower Dipole
SPR2 STC Slowness Projection, Receiver Array - Upper Dipole
SPR3 STC Slowness Projection, Receiver Array - Stoneley
SPR4 STC Slowness Projection, Receiver Array - Monopole PS
SPREX STC Slowness Projection, Receiver Array - Expert
SPT1 STC Slowness Projection, Transmitter Array - Lower Dipole
SPT2 STC Slowness Projection, Transmitter Array - Upper Dipole
SPT3 STC Slowness Projection, Transmitter Array - Stoneley
SPT4 STC Slowness Projection, Transmitter Array - Monopole PS
SPTEX STC Slowness Projection, Transmitter Array - Expert
STE Coherent Stoneley Energy
STPLREX S/T Plane Receiver Array - Expert
STPLTEX S/T Plane Transmitter Array - Expert
SWF1 Sonic Waveform 1
SWF2 Sonic Waveform 2
SWF3 Sonic Waveform 3
SWF4 Sonic Waveform 4
SWF5 Sonic Waveform 5
SWF6 Sonic Waveform 6
SWF7 Sonic Waveform 7
SWF8 Sonic Waveform 8
T1R1 STC Peak Time, Receiver Array - Lower Dipole
T1R2 STC Peak Time, Receiver Array - Upper Dipole
T1R3 STC Peak Time, Receiver Array - Monopole Stoneley
T1R4 STC Peak Time, Receiver Array - Monopole P&S
T1REX STC Peak Time, Receiver Array - Expert Mode
T1T1 STC Peak Time, Transmitter Array - Lower Dipole
T1T2 STC Peak Time, Transmitter Array - Upper Dipole
T1T3 STC Peak Time, Transmitter Array - Monopole Stoneley
T1T4 STC Peak Time, Transmitter Array - Monopole P&S
T1TEX STC Peak Time, Transmitter Array - Expert Mode
T2REX STC Energy Peak Time, Receiver Array - Expert Mode
T2TEX STC Energy Peak Time, Transmitter Array - Expert Mode
TER0 Energy Peak Time, Receiver Array - SDT Stoneley
TER3 Label Energy Peak Time, Receiver Array - Monopole Stoneley
TEREX LABEL Energy Peak Time, Receiver Array - Expert Mode
TERP Label Energy Peak Time, Receiver Array, Compressional - Monopole P&S
TERS Label Energy Peak Time, Receiver Array, Shear - Monopole P&S
TET0 Energy Peak Time, Transmitter Array - Stoneley
TET3 Label Energy Peak Time, Transmitter Array - Monopole Stoneley
TETEX LABEL Energy Peak Time, Transmitter Array - Expert Mode
TETP Label Energy Peak Time, Transmitter Array, Compressional - Monopole P&S
TETS Label Energy Peak Time, Transmitter Array, Shear - Monopole P&S
TTR0 Label Peak Time, Receiver Array - SDT Stoneley
TTR1 Peak Time, Receiver Array - Lower Dipole
TTR2 Peak Time, Receiver Array - Upper Dipole
TTR3 Peak Time, Receiver Array - Monopole Stoneley
TTREX LABEL Peak Time, Receiver Array - Expert Mode
TTRP Peak Time, Receiver Array, Compressional - Monopole P&S
TTRS Peak Time, Receiver Array, Shear - Monopole P&S
TTT0 Label Peak Time, Transmitter Array - SDT Stoneley
TTT1 Peak Time, Transmitter Array - Lower Dipole
TTT2 Peak Time, Transmitter Array - Upper Dipole
TTT3 Peak Time, Transmitter Array - Monopole Stoneley
TTTEX LABEL Peak Time, Transmitter Array - Expert Mode
TTTP Peak Time, Transmitter Array, Compressional - Monopole P&S
TTTS Peak Time, Transmitter Array, Shear - Monopole P&S
TWI Integration Time Window
WFC Warning Flag for Compressional
WFSH Warning Flag for Shear
WFST Warning Flag for STONELEY

Related parameters
ParameterDescription
BS Bit Size
CASF Label Casing Function - Monopole P&S
CENFRQ Center frequency
COLL Label Slowness Lower Limit - Monopole P&S Compressional
COUL Label Slowness Upper Limit - Monopole P&S Compressional
CTHR Coherence Threshold
DCLX STC DC Lower Limit - Expert
DCMEX STC DC Moveout - Expert
DCUX STC DC Upper Limit - Expert
DLCS Label Compressional Source - Dipole Shear
DLHS Label Hole Diameter Source for SOBS Channel
DLLE Dot Log Left Edge
DLRE Dot Log Right Edge
DLTR Dot Log Track
DSHL Label Slowness Lower Limit - Dipole Shear
DSHU Label Slowness Upper Limit - Dipole Shear
DT Delta-T (Interval Transit Time)
DTCOCH Code (mnemonic) of Compressional Slowness channel
DTCS Compressional Delta-T Source for DTCO Channel
DTSS Shear Delta-T Source for DTSM Channel
FIL_LENG Filter length
FIL_Q Q of filter band (Filter sharpness)
FILG Label Fill Gap Control - Monopole P&S
FILT Filtering
FREQ_HIGH Filter high cut frequency
ITWI Integration Time Window
LPM1 Label Processing Mode - Lower Dipole
LPM2 Label Processing Mode - Upper Dipole
LPM3 Label Processing Mode - Monopole Stoneley
LPM4 Label Processing Mode - Monopole P&S
MCS Mean Casing Slowness
MGP3 STC MultiGain Processing - Stoneley
MGP4 STC MultiGain Processing - P & S
NEXP Expansion Factor
NRSA Number of Receivers in Sub-Array
RSMN Label Shear/Compressional Minimum Ratio - Monopole P&S
RSMX Label Shear/Compressional Maximum Ratio - Monopole P&S
SAS1 STC Sonic Array Status - Lower Dipole
SAS2 STC Sonic Array Status - Upper Dipole
SAS3 STC Sonic Array Status - Monopole Stoneley
SAS4 STC Sonic Array Status - Monopole P&S
SASX Sonic Array Status - Expert
SBO1 STC Search Band Offset - Lower Dipole
SBO2 STC Search Band Offset - Upper Dipole
SBO3 STC Search Band Offset - Monopole Stoneley
SBO4 STC Search Band Offset - Monopole P&S
SBOF Search Band Offset
SBOX STC Search Band Offset - Expert
SBW1 STC Search Bandwidth - Lower Dipole
SBW2 STC Search Bandwidth - Upper Dipole
SBW3 STC Search Bandwidth - Monopole Stoneley
SBW4 STC Search Bandwidth - Monopole P&S
SBWI Search Bandwidth
SBWX STC Search Bandwidth - Expert
SDT_STCM SDT STC processing mode
SEMTHR STC Semblance Threshold
SFC1 STC Formation Character - Lower Dipole
SFC2 STC Formation Character - Upper Dipole
SFC3 STC Formation Character - Monopole Stoneley
SFC4 STC Formation Character - Monopole P&S
SFM1 STC Filter - Lower Dipole
SFM2 STC Filter - Upper Dipole
SFM3 STC Filter - Monopole Stoneley
SFM4 STC Filter - Monopole P&S
SGLX STC Signal Lower Limit - Expert
SGMX STC Signal Moveout - Expert
SGUX STC Signal Upper Limit - Expert
SHLL Label Slowness Lower Limit - Monopole P&S Shear
SHUL Label Slowness Upper Limit - Monopole P&S Shear
SLL Slowness Lower Limit
SLL_STO Storage Slowness Lower Limit
SLL1 STC Slowness Lower Limit - Lower Dipole
SLL2 STC Slowness Lower Limit - Upper Dipole
SLL3 STC Slowness Lower Limit - Monopole Stoneley
SLL4 STC Slowness Lower Limit - Monopole P&S
SLLX STC Slowness Lower Limit - Expert
SPLV STC Processing Level
SPM0 STC Processing Mode - SDT
SPM1 Slowness Determination Processing Mode - Lower Dipole
SPM2 Slowness Determination Processing Mode - Upper Dipole
SPM3 Slowness Determination Processing Mode - Monopole Stoneley
SPM4 Slowness Determination Processing Mode - Monopole P&S
SPMX STC Processing Mode - Expert
SST_STO Storage Slowness Step
SST1 STC Slowness Step - Lower Dipole
SST2 STC Slowness Step - Upper Dipole
SST3 STC Slowness Step - Monopole Stoneley
SST4 STC Slowness Step - Monopole P&S
SSTE Slowness Step
SSTX STC Slowness Step - Expert
STC_FIL_3 STC filter the third parameter
STC_FIL_4 STC filter the fourth parameter
STC_FIL_HIGH STC filter high cut
STC_FIL_LENG STC filter length
STC_FIL_LOW STC filter low cut
STC_FIL_TYPE STC filter type
STCAL STC algorithm
STLL Label Slowness Lower Limit - Monopole Stoneley
STUL Label Slowness Upper Limit - Monopole Stoneley
SUL Slowness Upper Limit
SUL_STO Storage Slowness Upper Limit
SUL1 STC Slowness Upper Limit - Lower Dipole
SUL2 STC Slowness Upper Limit - Upper Dipole
SUL3 STC Slowness Upper Limit - Monopole Stoneley
SUL4 STC Slowness Upper Limit - Monopole P&S
SULX STC Slowness Upper Limit - Expert
SWD1 STC Slowness Width - Lower Dipole
SWD2 STC Slowness Width - Upper Dipole
SWD3 STC Slowness Width - Monopole Stoneley
SWD4 STC Slowness Width - Monopole P&S
SWDX STC Slowness Width - Expert
SWID Slowness Width
TBF1 STC Time for Baseline Fill - Lower Dipole
TBF2 STC Time for Baseline Fill - Upper Dipole
TBF3 STC Time for Baseline Fill - Stoneley
TBF4 STC Time for Baseline Fill - Monopole P&S
TBFX STC Time for Baseline Fill - Expert
TLL Time Lower Limit
TLL_STO Storage Time Lower Limit
TLL1 STC Time Lower Limit - Lower Dipole
TLL2 STC Time Lower Limit - Upper Dipole
TLL3 STC Time Lower Limit - Monopole Stoneley
TLL4 STC Time Lower Limit - Monopole P&S
TLLX STC Time Lower Limit - Expert
TST_STO Storage Time Step
TST1 STC Time Step - Lower Dipole
TST2 STC Time Step - Upper Dipole
TST3 STC Time Step - Monopole Stoneley
TST4 STC Time Step - Monopole P&S
TSTE Time Step
TSTX STC Time Step - Expert
TUL Time Upper Limit
TUL_STO Storage Time Upper Limit
TUL1 STC Time Upper Limit - Lower Dipole
TUL2 STC Time Upper Limit - Upper Dipole
TUL3 STC Time Upper Limit - Monopole Stoneley
TUL4 STC Time Upper Limit - Monopole P&S
TULX STC Time Upper Limit - Expert
TWD1 STC Time Width - Lower Dipole
TWD2 STC Time Width - Upper Dipole
TWD3 STC Time Width - Monopole Stoneley
TWD4 STC Time Width - Monopole P&S
TWDX STC Time Width - Expert
TWI1 STC Integration Time Window - Lower Dipole
TWI2 STC Integration Time Window - Upper Dipole
TWI3 STC Integration Time Window - Monopole Stoneley
TWI4 STC Integration Time Window - Monopole P&S
TWID Time Width
TWIX STC Integration Time Window - Expert
WD_OFFSET Waveform depth offset in STC
WF_FLG Flag to show which waveforms are utilized


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