12.11.18 StimJobDiagnosticSession

Topic Version	1	Published	11/11/2016	Topic Change History
For Standard	WITSML v2.0
Type:	Class		Stereotype:	«XSDcomplexType»

A pumping diagnostics session.

Table 12.11.18-1 Attributes
Name	Type	Notes
AvgBottomholeTreatmentPres	PressureMeasure	Average bottomhole treatment pressure.
AvgBottomholeTreatmentRate	VolumePerTimeMeasure	Average bottomhole treatment flow rate.
BaseFluidVol	VolumeMeasure	Base fluid volume entering equipment.
BottomholeHydrostaticPres	PressureMeasure	Bottomhole hydrostatic pressure.
BottomholeTemperature	ThermodynamicTemperatureMeasure	Static bottomhole temperature.
BubblePointPres	PressureMeasure	The pressure at which gas begins to break out of an under saturated oil and form a free gas phase in the matrix or a gas cap.
ChokeSize	LengthMeasure	The size of the choke used during a flow back test.
Description	String2000	A description of the session.
DTimFractureClose	TimeStamp	The date and time when the fluid in the fracture is completely leaked off into the formation and the fracture closes on its faces.
DTimPumpOff	TimeStamp	The date and time pumping ended.
DTimPumpOn	TimeStamp	The date and time pumping began.
DTimWellShutin	TimeStamp	The date and time at which a well ceases flowing and the valves are closed.
ExtensionNameValue	ExtensionNameValue	Extensions to the schema based on a name-value construct.
FluidCompressibility	IsothermalCompressibilityMeasure	The volume change of a fluid when pressure is applied.
FluidDensity	MassPerVolumeMeasure	The density of the fluid.
FluidEfficiency	VolumePerVolumeMeasure	A measurement, derived from a data frac, of the efficiency of a particular fluid in creating fracture area on a particular formation at a set of conditions.
FluidKprimeFactor	DimensionlessMeasure	The consistency index K is the shear stress or viscosity of the fluid at one sec-1 shear rate. An increasing K raises the effective viscosity.
FluidNprimeFactor	DimensionlessMeasure	Power law component. As 'n' decreases from 1, the fluid becomes more shear thinning. Reducing 'n' produces more non-Newtonian behavior.
FluidSpecificHeat	SpecificHeatCapacityMeasure	The heat required to raise one unit mass of a substance by one degree.
FluidThermalConductivity	ThermalConductivityMeasure	In physics, thermal conductivity is the property of a material describing its ability to conduct heat. It appears primarily in Fourier's Law for heat conduction. Thermal conductivity is measured in watts per kelvin-meter. Multiplied by a temperature difference (in kelvins) and an area (in square meters), and divided by a thickness (in meters), the thermal conductivity predicts the rate of energy loss (in watts) through a piece of material.
FluidThermalExpansionCoefficient	VolumetricThermalExpansionMeasure	Dimensional response to temperature change is expressed by its coefficient of thermal expansion. When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms also changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling. The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion and generally varies with temperature.
FoamQuality	VolumePerVolumeMeasure	Foam quality percentage of foam for the job during the stimulation services.
FractureClosePres	PressureMeasure	The pressure when the fracture width becomes zero.
FrictionPres	PressureMeasure	The pressure loss due to fluid friction with the pipe while a fluid is being pumped.
InitialShutinPres	PressureMeasure	Initial shutin pressure.
MdBottomhole	MeasuredDepthCoord	The measured depth of the bottom of the hole.
MdMidPerforation	MeasuredDepthCoord	The measured depth of the middle perforation.
MdSurface	MeasuredDepthCoord	The measured depth of the wellbore to its injection point.
Name	String64	The name of the session.
Number	NonNegativeLong	The number of this pumping diagnostics session.
PercentPad	VolumePerVolumeMeasure	The volume of the pad divided by the (volume of the pad + the volume of the proppant laden fluid).
PorePres	PressureMeasure	The pressure of the liquids in the formation pores.
PumpDuration	TimeMeasure	The time between the shutin time and the pump on time.
ReservoirTotalCompressibility	IsothermalCompressibilityMeasure	The volume change of a reservoir material when pressure is applied.
StageNumber	NonNegativeLong	The number of a stage associated with this diagnostics session.
SurfaceFluidTemperature	ThermodynamicTemperatureMeasure	Temperature of the fluid at the surface.
SurfaceTemperature	ThermodynamicTemperatureMeasure	The constant earth temperature at a given depth specific to a region.
TemperatureCorrectionApplied	boolean	Are the calculations corrected for temperature? A value of "true" (or "1") indicates that the calculations were corrected for temperature. A value of "false" (or "0") or not given indicates otherwise.
TvdMidPerforation	WellVerticalDepthCoord	The true vertical depth of the middle perforation.
uid	String64	Unique identifier for this instance of StimJobDiagnosticSession.
WellboreVolume	VolumeMeasure	The volume of fluid in the wellbore.

Table 12.11.18-2 Associations
Association	Notes
From: StimJobDiagnosticSession.PumpFlowBackTest 0..*To: StimPumpFlowBackTest Association
From: StimJobDiagnosticSession.FluidEfficiencyTest 0..*To: StimFetTest Association
From: StimJobDiagnosticSession.StepDownTest 0..*To: StimStepDownTest Association
From: StimJobDiagnosticSession.StepRateTest 0..*To: StimStepTest Association
From: StimJobStage.PdatSession 0..*To: StimJobDiagnosticSession Association