Schlumberger

Mnemonics, Software product, ATD


CodeATD
NameArrival Time Determination
DisciplinePetrophysics
TypeAPPLICATION
DescriptionDetermination of travel time and slowness from sonic waveforms

Related channels
ChannelDescription
BS Bit Size
C1 Caliper 1
C2 Caliper 2
C3 Double R1 Radius (HDT)
C4 Double R4 Radius (HDT)
CAL1 Caliper 1
CAL2 Caliper 2
CALI Caliper
CALS Micro Resistivity Caliper
CRVP_0_0 Compressional Radial Variation Profile at 0 Inch Radial Depth from Borehole Surface
CRVP_10_0 Compressional Radial Variation Profile at 10 Inch Radial Depth from Borehole Surface
CRVP_12_5 Compressional Radial Variation Profile at 12.5 Inch Radial Depth from Borehole Surface
CRVP_15_0 Compressional Radial Variation Profile at 15 Inch Radial Depth from Borehole Surface
CRVP_17_5 Compressional Radial Variation Profile at 17.5 Inch Radial Depth from Borehole Surface
CRVP_2_5 Compressional Radial Variation Profile at 2.5 Inch Radial Depth from Borehole Surface
CRVP_20_0 Compressional Radial Variation Profile at 20 Inch Radial Depth from Borehole Surface
CRVP_22_5 Compressional Radial Variation Profile at 22.5 Inch Radial Depth from Borehole Surface
CRVP_25_0 Compressional Radial Variation Profile at 25 Inch Radial Depth from Borehole Surface
CRVP_5_0 Compressional Radial Variation Profile at 5 Inch Radial Depth from Borehole Surface
CRVP_7_5 Compressional Radial Variation Profile at 7.5 Inch Radial Depth from Borehole Surface
CRVP_ITER Compressional Radial Variation Profile Number of Iterations
DI Diameter of Invasion
DT Delta-T (also called Slowness or Interval Transit Time)
DTL Delta-T Long Spacing
HD Hole Diameter
HD1 Hole Diameter 1
HDAR Hole Diameter from Area
HDAV Hole Diameter Average
HDMX Hole Diameter Maximum
HDOV Hole Diameter from Oval
LA Large Arm Caliper
LCAL Density Caliper
MCAL MLT (Microlog) Caliper
STTA1 Sonic Transit Time Array 1
STTA2 Sonic Transit Time Array 2
STTA3 Sonic Transit Time Array 3
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
TT1 Transit Time 1
TT10 Transit Time 10
TT11 Transit Time 11
TT12 Transit Time 12
TT13 Transit Time 13
TT14 Transit Time 14
TT15 Transit Time 15
TT16 Transit Time 16
TT2 Transit Time 2
TT3 Transit Time 3
TT4 Transit Time 4
TT5 Transit Time 5
TT6 Transit Time 6
TT7 Transit Time 7
TT8 Transit Time 8
TT9 Transit Time 9

Related parameters
ParameterDescription
AI Averaging Interval
DTMUD Delta-T for Mud
MAHTR Manual High Threshold Reference for first arrival detection
MNHTR Minimum High Threshold Reference for first arrival detection
NMSG Near Minimum Sliding Gate
NUMP Number of Detection Passes
SFAF Sonic Formation Attenuation Factor
SGAD Sliding Gate Status
SGCW Sliding Gate Closing Width
SGDT Sliding Gate Delta-T
SGW Sliding Gate Width
SLEV Signal Level for AGC
WF_FLG Flag to show which waveforms are utilized


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