Schlumberger

Mnemonics, Software product, ZODIAC


CodeZODIAC
NameZODIAC
DisciplineWell Testing
TypeAPPLICATION
DescriptionZoned Dynamic Interpretation Analysis and Computation, an interactive application for Well Test Design and Interpretation


Related parameters
ParameterDescription
CD_ANGLE_BETWEEN_FAULTS Angle between two faults (using Convolution Derivative)
CD_DISTANCE_TO_FAULT Distance from sealing fault to well (using Convolution Derivative)
CD_EXTRAPOLATED_PRESSURE Extrapolated Pressure from infinite-Acting Analysis (using Convolution Derivative)
CD_FAULT_TO_WELL_ANGLE Fault to well angle (using Convolution Derivative)
CD_GEOMETRIC_SKIN_FACTOR_LPR Geometric skin factor from late pseudo radial flow analysis (using Convolution Derivative)
CD_INTERPOROSITY_FLOW_COEFFICIENT Dual Porosity Interporosity Flow Coefficient (using Convolution Derivative)
CD_MECHANICAL_SKIN_FACTOR_LPR Mechanical skin factor from late pseudo radial flow analysis (using Convolution Derivative)
CD_MECHANICAL_SKIN_LT Mechanical skin from late time analysis (using Convolution Derivative)
CD_PERMEABILITY Permeability (using Convolution Derivative)
CD_PERMEABILITY_THICKNESS Permeability thickness product (using Convolution Derivative)
CD_SKIN_FACTOR_EPR Skin factor from early pseudo radial flow analysis (using Convolution Derivative)
CD_SKIN_FACTOR_LPR Skin factor from late pseudo radial flow analysis (using Convolution Derivative)
CD_SQRT_KX_KY_LPR Square root Kx.Ky product (using Convolution Derivative)
CD_SQRT_KY_KZ_EPR Square root Ky.Kz product (using Convolution Derivative)
CD_STANDOFF Well standoff to reservoir bottom (using Convolution Derivative)
CD_STORATIVITY_RATIO Dual Porosity Storativity Ratio (using Convolution Derivative)
CD_TOTAL_SKIN_FACTOR Skin factor (using Convolution Derivative)
CD_VERTICAL_PERMEABILITY Permeability in Z direction (using Convolution Derivative)
CD_WELLBORE_STORAGE Wellbore storage coefficient (using Convolution Derivative)
CD_X_DIRECTION_PERMEABILITY Permeability in X direction (using Convolution Derivative)
CD_Y_DIRECTION_PERMEABILITY Permeability in Y direction (using Convolution Derivative)
CO2_CONCENTRATION Concentration of Carbon Dioxide (CO2)
CRITICAL_PRESSURE The pressure needed to condense a vapor at its critical temperature. Applies to pure components; for mixtures use Pseudocritical_Pressure.
CRITICAL_TEMPERATURE The highest temperature at which a fluid can exist as a liquid and above which its vapor cannot be liquefied regardless of the amount of pressure. Applies to pure components; for mixtures use Pseudocritical_Temperature.
FLUID_TYPE The type of fluid. Usually associated with a formation, a reservoir, borehole, etc.
GAS_FORMATION_VOLUME_FACTOR Ratio of gas volume at specified (typically, reservoir) conditions to the gas volume at surface (stock tank) conditions. Normally abbreviated Bg.
GAS_PRESSURE_AXIS One of the pressure transformations used in the Zodiac Gas well interpretations
GAS_SATURATION The extent to which the pore space in a formation contains gas.
GAS_VISCOSITY The viscosity of a gas at specific temperature and pressure conditions.
H2S_CONCENTRATION Concentration of H2S generally measured in ppm. H2S concentration is critical in evaluating the corrosion of metal (e.g. coiled tubing) under stresses.
HORIZONTAL_PERMEABILITY A permeability oriented horizontally along the bedding plane of the stratum. Usually abbreviated as Kx.
HORIZONTAL_WELL_STANDOFF Horizontal Well Standoff from reservoir boundary
HYDRAULIC_UNIT_BOTTOM Hydraulic Unit Bottom Measured Depth
HYDRAULIC_UNIT_NAME Hydraulic Unit Name
HYDRAULIC_UNIT_POROSITY Hydraulic Unit Porosity
HYDRAULIC_UNIT_STATIC_POTENTIAL Hydraulic Unit Static Potential
HYDRAULIC_UNIT_STATIC_PRESSURE Hydraulic Unit Static Pressure
HYDRAULIC_UNIT_TEMPERATURE Hydraulic Unit Temperature
HYDRAULIC_UNIT_TOP Hydraulic Unit Top Measured Depth
HYDRAULIC_UNIT_TVT Hydraulic Unit True Vertical Thickness
N2_CONCENTRATION Concentration of Nitrogen
OIL_FORMATION_VOLUME_FACTOR For a sample of oil and its residual solution gas at surface, the ratio of the volume at specified (typically, reservoir) conditions to the volume at surface (stock tank) conditions. Normally abbreviated Bo; typical range 1.1 - 2.
OIL_SATURATION The extent to which the pore space in a formation contains oil.
OIL_VISCOSITY The viscosity of oil at specific temperature and pressure conditions.
P_WELLBORE_STORAGE Wellbore storage coefficient (using Pressure)
PD_ANGLE_BETWEEN_FAULTS Angle between two faults (using Pressure Derivative)
PD_CHANNEL_WIDTH Channel width (using Pressure Derivative)
PD_DISTANCE_TO_FAULT Distance from sealing fault to well (using Pressure Derivative)
PD_DRAINAGE_AREA Drainage area (using Pressure Derivative)
PD_EXTERNAL_RADIUS Reservoir external radius (using Pressure Derivative)
PD_EXTRAPOLATED_PRESSURE Extrapolated Pressure from infinite-Acting Analysis (using Pressure Derivative)
PD_EXTRAPOLATION_PRESSURE_SPH Extrapolated Pressure from spherical flow analysis (using Pressure Derivative)
PD_FAULT_TO_WELL_ANGLE Fault to well angle (using Pressure Derivative)
PD_GEOMETRIC_SKIN_FACTOR_LPR Geometric skin factor from late pseudo radial flow analysis (using Pressure Derivative)
PD_INTERPOROSITY_FLOW_COEFFICIENT Dual Porosity Interporosity Flow Coefficient (using Pressure Derivative)
PD_MECHANICAL_SKIN_FACTOR_LPR Mechanical skin factor from late pseudo radial flow analysis (using Pressure Derivative)
PD_MECHANICAL_SKIN_LT Mechanical skin from late time analysis (using Pressure Derivative)
PD_PERMEABILITY Permeability (using Pressure Derivative)
PD_PERMEABILITY_SPH Permeability from spherical flow analysis (using Pressure Derivative)
PD_PERMEABILITY_THICKNESS Permeability thickness product (using Pressure Derivative)
PD_PERMEABILTY_THICKNESS_SPH Permeability Thickness from spherical flow analysis (using Pressure Derivative)
PD_PORE_VOLUME Reservoir pore volume (using Pressure Derivative)
PD_PRESSURE_AT_1HR 1 Hr Pressure from infinite-Acting Analysis (using Pressure Derivative)
PD_PRESSURE_AT_1HR_EPR 1 hour pressure from early pseudo radial flow analysis (using Pressure Derivative)
PD_PRESSURE_AT_1HR_LPR 1 hour pressure from late pseudo radial flow analysis (using Pressure Derivative)
PD_RECTANGLE_LENGTH Rectangular reservoir length (using Pressure Derivative)
PD_RECTANGLE_WIDTH Rectangular reservoir width (using Pressure Derivative)
PD_SHAPE_FACTOR Reservoir Shape factor (using Pressure Derivative)
PD_SKIN_FACTOR_EPR Skin factor from early pseudo radial flow analysis (using Pressure Derivative)
PD_SKIN_FACTOR_LPR Skin factor from late pseudo radial flow analysis (using Pressure Derivative)
PD_SQRT_KX_KY_LPR Square root Kx.Ky product (using Pressure Derivative)
PD_SQRT_KY_KZ_EPR Square root Ky.Kz product (using Pressure Derivative)
PD_STANDOFF Well standoff to reservoir bottom (using Pressure Derivative)
PD_STORATIVITY_RATIO Dual Porosity Storativity Ratio based on Pressure Derivative
PD_TOTAL_SKIN_FACTOR Skin factor (using Pressure Derivative)
PD_VERTICAL_PERMEABILITY Permeability in Z direction (using Pressure Derivative)
PD_X_DIRECTION_PERMEABILITY Permeability in X direction (using Pressure Derivative)
PD_X_DISTANCE_TO_WELL Distance from reservoir boundary to well in X direction (using Pressure Derivative)
PD_Y_DIRECTION_PERMEABILITY Permeability in Y direction (using Pressure Derivative)
PD_Y_DISTANCE_TO_WELL Distance from reservoir boundary to well in Y direction (using Pressure Derivative)
PLOT_FOR_REPORT Name of .gpd file to be included in Report
PLOT_FOR_REPORT_COMMENTS Name of text file to be included in comments section of the Report
PRESSURE_TO_POTENTIAL_REFERENCE_DEPTH Reference Depth for Pressure to Potential Conversion
PRODUCING_GAS_LIQUID_RATIO The ratio of produced gas to produced liquid (oil + water) at the wellhead
PRODUCING_THICKNESS Total flowing thickness along the Borehole ("Hp")
PRODUCING_WATER_CUT Producing Water Cut from the Hydraulic Unit
PRODUCTION_HISTORY_REFERENCE_DATE_AND_TIME Reference Date and Time for Production History
PVT_REFERENCE_PRESSURE Reference Pressure for PVT computation
REFERENCE_DATE_AND_TIME Reference Date and Time for Elapsed Time
REFERENCE_DATE_FORMAT Format string that a user selects to display date
REPORT_COMMENTS General Comments for Report
STANDARD_PRESSURE Pressure considered to be "standard", for rates and volumes reported to be measured at Standard Conditions.
STANDARD_TEMPERATURE Temperature considered to be "standard", for rates and volumes reported to be measured at Standard Conditions.
TEST_TYPE Type of Well Test
TESTED_INTERVAL_TOP Tested Interval Top (MD)
TOTAL_COMPRESSIBILITY Compressibility of the rock matrix combined with fluid compressibilities within the matrix.
TOTAL_FLOWING_THICKNESS Hydraulic Unit Total Flowing Thickness (in Measured Depth)
TOTAL_FORMATION_VOLUME_FACTOR Ratio of fluid volume (liquid + total solution gas) at specified (typically, reservoir) conditions to the volume of liquid and residual solution gas at surface (stock tank) conditions. Used for two-phase systems; abbreviated Bt; typical range 1.1 - 200.
TOTAL_HORIZONTAL_WELL_LENGTH Total Horizontal Well Length
TRANSIENT_ABSOLUTE_DELTA_Q Absolute value of Delta Flow Rate
TRANSIENT_END_TIME End time (tend) of the Transient
TRANSIENT_NAME Transient Name
TRANSIENT_NOMINAL_Q Nominal Flow Rate
TRANSIENT_P_MEASURE Name of the Pressure channel used to interpret the Transient
TRANSIENT_P0 Pressure at Transient Start Time
TRANSIENT_Q_MEASURE Name of the Flowrate channel used to interpret the Transient
TRANSIENT_Q0 Flowrate at Transient Start Time
TRANSIENT_START_TIME Start time (t0) of the Transient
VERTICAL_PERMEABILITY A permeability oriented vertically perpendicular to the bedding plane of the stratum. Usually abbreviated as Ky.
WATER_FORMATION_VOLUME_FACTOR Ratio of water volume at specified (typically, reservoir) conditions to the water volume at surface (stock tank) conditions. Normally abbreviated Bw; typical range .99 - 1.07.
WATER_SATURATION The extent to which the pore space in a formation contains water.
WATER_VISCOSITY The viscosity of water at specific temperature and pressure conditions.
WELLBORE_FLUID_COMPRESSIBILITY Wellbore Fluid Compressibility
WELLBORE_RADIUS Wellbore Radius for the Hydraulic Unit
WET_GAS_GRAVITY The ratio of the molecular weight of the wet gas to that of air (Wet gas - mixture of free gas plus condensate)


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