Schlumberger

Mnemonics, Software product, DECISION_XPRESS


CodeDECISION_XPRESS
NameDecisionXpress
DisciplinePetrophysics
TypeAPPLICATION
DescriptionDecisionXpress Petrophysical Interpretation

Related channels
ChannelDescription
AHTRT Array Induction Two Foot Rt
AHTRX Array Induction Two Foot Rxo
ATRT Array Induction Two Foot Rt
ATRX Array Induction Two Foot Rxo
BHPR Borehole Pressure
CECA Apparent Cation Exchange Capacity
CFTC Corrected Far Thermal Count Rate
CNPH Corrected Neutron Porosity
CNTC Corrected Near Thermal Count Rate
DPHI Density Porosity
EROZ_BSL_RMV HRDD Confidence on Standard Resolution Formation Density with Baseline Removed
ESUF_WALK2 Elemental Statistical Uncertainty Factor (SpectroLith WALK2 Model)
FSALA Apparent Formation Salinity
GTEM Generalized Borehole Temperature
HART True Formation Resistivity from HALS/MCFL Measurements
HCAL HRCC Caliper Calibrated
KGAS Permeability to Gas
KHYD Effective Permeability to Hydrocarbon
KINT Intrinsic Permeability
KOIL Permeability to Oil
KWTR Permeability to Water
NET_FLAG Flag to identify all levels which satisfy cutoff criteria related to the potential of the rock to be a reservoir, independent of actual hydrocarbon producibility; typical cutoffs are porosity and clay content.
NET_PAY_FLAG Flag to identify all levels which satisfy cutoff criteria related to hydrocarbon producibility, often obtained by applying a saturation cutoff after cutoffs for porosity and mobility have already been applied (see NET_FLAG).
PEFZ Standard Resolution Formation Photoelectric Factor
PHIT Total Porosity: includes all forms of porosity, including that occupied by bound fluids, and is independent of rock and fluid materials and of environmental effects
QC_LITH Lithology Quality Indicator
QC_PERM Permeability Quality Indicator
QC_PORO Porosity Quality Indicator
QC_RELPERM Relative Permeability Quality Indicator
QC_SW Saturation Quality Indicator
QGC Fractional Flow of Gas Relative to Total Flow
QHC Fractional Flow of Hydrocarbons Relative to Total Flow
QOC Fractional Flow of Oil Relative to Total Flow
QTOT Flowrate Total Water, Oil, and Gas
QWC Fractional Flow of Water Relative to Total Flow
RGCN Raw Gain-Corrected Near Count Rate
RHGE_WALK2 Matrix Density from Elemental Concentrations (SpectroLith WALK2 Model)
RHOZ Standard Resolution Formation Density
RKG Relative Permeability to Gas
RKH Relative Permeability to Hydrocarbon
RKO Relative Permeability to Oil
RKW Relative Permeability to Water
RT_HRLT HRLT True Formation Resistivity
RW Connate Water Resistivity
RXO_HRLT HRLT Invaded Zone Resistivity
RXOZ Invaded Formation Resistivity filtered at 18 inches
SPL_PATT SpectroLith Lithocolumn Pattern Channel
SPL_RGB_GF SpectroLith Lithocolumn Color Channel for GeoFrame
SPL_RGB_HZ SpectroLith Lithocolumn Color Channel for Viewer
SPL_RGB_OP SpectroLith Lithocolumn Color Channel for Maxis
SWB Bound Water Saturation
SWI Irreducible Water Saturation
SWT Total Water Saturation
SXOT Total Flushed Zone Water Saturation
TNGE_WALK2 Matrix Thermal Neutron Porosity from Elemental Concentrations (SpectroLith WALK2 Model)
UGE_WALK2 Matrix Volumetric Photoelectric Factor from Elemental Concentrations (SpectroLith WALK2 Model)
VANH Volume of Anhydrite Relative to Total Volume
VCAR Volume Fraction of Carbonate Relative to Total Volume
VCL Volume of Clay Type Material Relative to Total Volume
VCLA Volume Fraction of Clay Relative to Total Volume
VCOA Volume of Coal Relative to Total Volume
VEVA Volume Fraction of Evaporite Relative to Total Volume
VMHY Volume of Moved Hydrocarbon Relative to Total Volume
VPYR Volume of Pyrite Relative to Total Volume
VQFM Volume Fraction of Quartz+Feldspar+Mica Relative to Total Volume
VSID Volume of Siderite Relative to Total Volume
VUBW Volume of Bound Water in Undisturbed Zone
VUGA Volume of Gas in Undisturbed Zone
VUHY Undistd Zone Volume Fraction Hydrocarbon Relative to Total Volume
VUIW Volume of Irreducible Water In Undisturbed Zone
VUOI Volume of Oil in Undisturbed Zone
VUWA Volume of Water in Undisturbed Zone
VXBW Volume of Bound Water in Flushed Zone
VXGA Volume of Gas in Flushed Zone
VXHY Flushed Zone Volume Fraction Hydrocarbon Relative to Total Volume
VXIW Volume of Irreducible Water In Flushed Zone
VXOI Volume of Oil in Flushed Zone
VXWA Volume of Water in Flushed Zone
WANH_WALK2 Dry Weight Fraction Anhydrite/Gypsum (SpectroLith WALK2 Model)
WCAR_WALK2 Dry Weight Fraction Carbonate (SpectroLith WALK2 Model)
WCLA_WALK2 Dry Weight Fraction Clay (SpectroLith WALK2 Model)
WCOA_WALK2 Dry Weight Fraction Coal (SpectroLith WALK2 Model)
WCUT Water Cut
WEVA_WALK2 Dry Weight Fraction Salt (SpectroLith WALK2 Model)
WPYR_WALK2 Dry Weight Fraction Pyrite (SpectroLith WALK2 Model)
WQFM_WALK2 Dry Weight Fraction Quartz+Feldspar+Mica (QFM) (SpectroLith WALK2 Model)
WSID_WALK2 Dry Weight Fraction Siderite (SpectroLith WALK2 Model)

Related parameters
ParameterDescription
ARHOB_ANHY Actual Density value for Anhydrite
ARHOB_CARB Actual Density value for Carbonate
ARHOB_CLAY Actual Density Value for Clay
ARHOB_COAL Actual Density value for Coal
ARHOB_EVAP Actual Density value for Evaporate
ARHOB_PYRI Actual Density value for Pyrite
ARHOB_QFM Actual Density Value for Quartz+Feldspar+Mica
ARHOB_SIDE Actual Density value for Siderite
BHFL Borehole Fluid Type
BS Bit Size
BSAL Borehole Salinity
C_WS Intergranular "C" coefficient in Waxman-Smits equation
DEX_LITHO_SRC DecisionXpress Lithology Source
DFD Drilling Fluid Density
DX_VERSION DecisionXpress Algorithm Version
EROZ_THRESHOLD EROZ Threshold for Density Quality Control Error
ESUF_ERROR_THRESHOLD ESUF Threshold for Lithology Quality Control Error
ESUF_WARNING_THRESHOLD ESUF Threshold for Lithology Quality Control Warning
FSAL Formation Salinity
HVIS Hydrocarbon Viscosity
KTIM_A Multiplier for Timur/Coates Permeability
KTIM_B Porosity Exponent for Timur/Coates Permeability
KTIM_C PHI Ratio Exponent for Timur/Coates Permeability
M_WS Intergranular "m" exponent in Waxman-Smits equation
MAX_WATER_SATURATION Cutoff value for Water Saturation curve
MCOR Mud Correction
MFST Mud Filtrate Sample Temperature
MIN_PERMEABILITY Cutoff value for Permeability curve
MIN_POROSITY Cutoff value for Porosity curve
N_ZP Zoned value of Archie saturation exponent
NET_PAY_PERMEABILITY Average permeability in the net pay portion of the zone interval (thickness weighted arithmetic average).
NET_PAY_POROSITY Porosity of the Net Pay zone
NET_PAY_THICKNESS Net Pay thickness, i.e. thickness after applying Shale, Porosity and Water Saturation cutoffs
NET_PAY_WATER_SATURATION Average water saturation in the net pay portion of the zone (thickness weighted arithmetic average).
NET_RESERVOIR_PERMEABILITY Average permeability in the net reservoir portion of the zone interval (thickness weighted arithmetic/geometric/harmonic average).
NET_RESERVOIR_POROSITY Average porosity in the Net Reservoir portion of the zone (thickness weighted arithmetic average).
NET_RESERVOIR_THICKNESS Total thickness of the porous portion of the zone; i.e. the footage which satisfies the Net Thickness conditions and which has porosity suitable to be a potential reservoir.
OVIS Oil Viscosity
RMFS Resistivity of Mud Filtrate Sample
SGFG Specific Gravity of Free Gas
SNPO_THRESHOLD SNPO Threshold for Neutron Quality Control Error
SSA_ANHY Specific Surface Area (mass-based) response parameter for Anhydrite
SSA_CARB Specific Surface Area (mass-based) response parameter for Carbonate
SSA_CLAY Specific Surface Area (Mass Based) Response Parameter for Clay
SSA_COAL Specific Surface Area (mass-based) response parameter for Coal
SSA_EVAP Specific Surface Area (mass-based) response parameter for Evaporite
SSA_PYRI Specific Surface Area (mass-based) response parameter for Pyrite
SSA_QFM Specific Surface Area (Mass Based) Response Parameter for Quartz+Feldspar+Mica
SSA_SIDE Specific Surface Area (mass-based) response parameter for Siderite


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