12.11.36 StimStepDownTest

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

Diagnostic test involving flowing a well back after treatment.

Table 12.11.36-1 Attributes

Name

Type

Notes

BottomholeFluidDensity

MassPerVolumeMeasure

The density of the fluid at the bottom of the hole adjusting for bottomhole temperature and pressure during the step-down test.

DiameterEntryHole

LengthMeasure

Diameter of the injection point or perforation.

DischargeCoefficient

DimensionlessMeasure

A coefficient used in the equation for calculation of the pressure drop across a perforation set.

EffectivePerfs

NonNegativeLong

The number of perforations in the interval being tested that are calculated to be open to injection, which is determined during the step-down test.

ExtensionNameValue

ExtensionNameValue

Extensions to the schema based on a name-value construct.

InitialShutinPres

PressureMeasure

The initial shutin pressure.

PerforationCount

NonNegativeLong

The number of perforations in the interval being tested.

Step

StimPumpFlowBackTestStep

The data related to a particular step in the step-down test.

uid

String64

Unique identifier for this instance of StimStepDownTest

Table 12.11.36-2 Associations

Association

Notes

From: StimJobDiagnosticSession.StepDownTest

0..*To: StimStepDownTest

Association