12.11.18 StimJobDiagnosticSession

Topic Version1Published11/11/2016
For StandardWITSML v2.0
Type:ClassStereotype:«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