OSDC.DotnetLibraries.Drilling.DrillingProperties 5.1.2

Background

This package is developed as part of the Society of Petroleum (SPE) Open Source Drilling Community, a sub-committee of the Drilling System Automation Technical Section.

Purpose

The purpose of this package is to provide a way to describe drilling properties and their uncertainty. There are also Attributes that allow to decorate the properties. There is also a function to generate a dictionary of the decorations associated with the drilling properties that can therefore be serialized in json.

Principles

A DrillingProperty is an abstract class that defines one property: Value. A Value is a ContinuousDistribution and therefore represents any continuous probability distrutions. ContinuousDistributionand other probability distributions are defined in OSDC.DotnetLibraries.General.Statistics, which is available as a nuget on nuget.org (see here). DrillingProperty has a method called Realize that is used to draw a value (double?) using the probability distribution defined in Value. It may return null.

DrillingPropertyhas four direct sub-classes:

• ScalarDrillingProperty: used to represent a scalar value with no uncertainty. The value is maintained as a DiracDistribution. There is redefinition of the Value property which is strongly typed to DiracDistribution. It is called DiracDistributionValue. The Value property points to the value contained in DiracDistrutionValue. The Realize method always return the value of the DiracDistribution or null if the value is not defined. So the ScalarDrillingProperty is equivalent to a fixed value. A convenience property is defined called ScalarValue. It allows to access directly the Value of the DiracDistribution.
• GaussianDrillingProperty: used to represent normal distributions defined by a Mean and a StandardDeviation. The probability distribution is defined as a GaussianDistribution. In order to benefits from strong typing, a property called GaussianValue is defined of the type GaussianDistribution. The Value property is redefined to point to the instance managed by GaussianValue. The Realize method produces values between -∞ and +∞ with a mean value corresponding to the Mean of the GaussianValue and with a standard deviation also defined in the GaussianValue. For conveniance, there are two additional properties that are defined: Mean and StandardDeviation. They allow to access directly the Mean and the StandardDeviation(respectively) of the GaussianValue.
  • SensorDrillingProperty: used to represent normal distributions for a sensor. Often, the characteristics of the sensor are given with an Accuracy and a Precision. The overall standard deviation is calculated as $\sqrt{\sigma^2{_a}+\sigma^2{_p}}$ where $\sigma_a$ is the accuracy and $\sigma_p$ is the precision. A Mean property is defined locally. It is a synonym of the Mean value of the underlying Gaussian probability distribution, which is still accessible through the property GaussianValue.
  • FullScaleDrillingProperty: used to represent normal distributions for a sensor. Here, the characteristics of the sensor are given with a proportion of the full-scale range of the measurement. The property ProportionError contains a value between 0 and 1. The property FullScale contains the max range for the measurement. The standard deviation of the Gaussian probability distribution is the product of the ProportionError by the FullScale. A Mean property is defined locally. It is a synonym of the Mean value of the underlying Gaussian probability distribution, which is still accessible through the property GaussianValue.
• UniformDrillingProperty: used to represent a uniform distritution between two values, Min and Max. The probability distribution is defined as a UniformDistribution. A property of type UniformDistribution is defined: UniformValue. The property Value is redefined to point to the instance managed by UniformValue. The realize method draws uniformely values in between Min and Max. There are two properties that are defined for convenience: Min and Max. They allow, respectively, to access the Min and the Max of the UniformDistribution.
• GeneralDistributionDrillingProperty: used to represent a general probability distribution managed as a histogram. The value is defined by a GeneralContinuousDistribution and accessible using the property GeneralDistributionValue. The Value property is redefined to point to the instance managed by GeneralDistributionValue. The GeneralContinuousDistribution can be defined either by a data set stored in Data. In that case, an histogram is generated from the data set, which is stored in Function. Or directly as a given histogram stored in Function. An histogram is represented as an array of Tuple<double, double> for which Item1 is the value of the bin and Item2 is the probability of the bin. There is an additional property, defined for convinience, to access directly the Function of the GeneralContinuousDistribution. It is called Histogram.

classDiagram
    DrillingProperty <|-- ScalarDrillingProperty
    DrillingProperty <|-- GaussianDrillingProperty
    DrillingProperty <|-- UniformDrillingProperty
    DrillingProperty <|-- GeneralDistributionDrillingProperty
    DrillingProperty : +ContinuousDistribution Value
    DrillingProperty : +double? Realize()
    class ScalarDrillingProperty {
        +DiracDistribution DiracDistributionValue
    }
    class GaussianDrillingProperty {
        +GaussianDistribution GaussianValue
        +double? Mean
        +double? StandardDeviation
    }
    GaussianDrillingProperty <|-- SensorDrillingProperty
    GaussianDrillingProperty <|-- FullScaleDrillingProperty
    class SensorDrillingProperty {
        +double? Accuracy
        +double? Precision
    }
    class FullScaleDrillingProperty {
        +double? FullScale
        +double? ProportionError
    }
    class UniformDrillingProperty {
        +UniformDistribution UniformValue
        +double? Min
        +double? Max
    }
    class GeneralDistributionDrillingProperty {
        +GeneralContinuousDistribution GeneralDistributionValue
        +Tuple<double, double>[]? Histogram
    }
end

Example

Here is an example.

using OSDC.DotnetLibraries.Drilling.DrillingProperties;
using System.Globalization;

namespace DrillingProperties
{
    class TestClass
    {
        public ScalarDrillingProperty Value1 { get; set; } = new ScalarDrillingProperty();
        public UniformDrillingProperty Value2 { get; set; } = new UniformDrillingProperty();
        public GaussianDrillingProperty Value3 { get; set; } = new GaussianDrillingProperty();
        public GeneralDistributionDrillingProperty Value4 { get; set; } = new GeneralDistributionDrillingProperty();
        public SensorDrillingProperty Value5 { get; set; } = new SensorDrillingProperty();
        public FullScaleDrillingProperty Value6 { get; set; }= new FullScaleDrillingProperty();
    }
    class Example
    {
        static void Main()
        {
            TestClass testClass = new TestClass();
            testClass.Value1.ScalarValue = 1.0;
            testClass.Value2.Min = -1.0;
            testClass.Value2.Max = 1.0;
            testClass.Value3.Mean = 10.0;
            testClass.Value3.StandardDeviation = 0.5;
            testClass.Value4.Histogram = new Tuple<double, double>[] {
                new Tuple<double, double>(0.0, 0.1),
                new Tuple<double, double>(1.0, 0.2),
                new Tuple<double, double>(2.0, 0.3),
                new Tuple<double, double>(3.0, 0.4)
            };
            testClass.Value5.Accuracy = 0.1;
            testClass.Value5.Precision = 0.01;
            testClass.Value5.Mean = 1.0;
            testClass.Value6.FullScale = 10.0;
            testClass.Value6.ProportionError = 0.001;
            testClass.Value6.Mean = 1.0;
            for (int i = 0; i < 10; i++)
            {
                Realize(testClass);
            }
        }

        static void Realize(TestClass testClass)
        {
            double? value1 = testClass.Value1.Realize();
            double? value2 = testClass.Value2.Realize();
            double? value3 = testClass.Value3.Realize();
            double? value4 = testClass.Value4.Realize();
            double? value5 = testClass.Value5.Realize();
            double? value6 = testClass.Value6.Realize();
            Console.WriteLine("Realized values:" +
                " value1 = " + value1?.ToString("F", CultureInfo.InvariantCulture) +
                " value2 = " + value2?.ToString("F", CultureInfo.InvariantCulture) +
                " value3 = " + value3?.ToString("F", CultureInfo.InvariantCulture) +
                " value4 = " + value4?.ToString("F", CultureInfo.InvariantCulture) +
                " value5 = " + value5?.ToString("F", CultureInfo.InvariantCulture) +
                " value6 = " + value6?.ToString("F", CultureInfo.InvariantCulture));
        }
    }
}

The execution of the program gives:

Realized values: value1 = 1.00 value2 = 0.58 value3 = 10.14 value4 = 2.98 value5 = 0.93 value6 = 1.01
Realized values: value1 = 1.00 value2 = 0.12 value3 = 10.75 value4 = 1.22 value5 = 0.85 value6 = 0.99
Realized values: value1 = 1.00 value2 = -0.98 value3 = 10.76 value4 = 2.40 value5 = 0.95 value6 = 0.99
Realized values: value1 = 1.00 value2 = -0.23 value3 = 9.05 value4 = 2.65 value5 = 1.01 value6 = 1.01
Realized values: value1 = 1.00 value2 = 0.51 value3 = 10.45 value4 = 0.74 value5 = 1.09 value6 = 0.99
Realized values: value1 = 1.00 value2 = -0.83 value3 = 10.35 value4 = 1.65 value5 = 0.98 value6 = 0.99
Realized values: value1 = 1.00 value2 = 0.06 value3 = 10.62 value4 = 1.48 value5 = 0.96 value6 = 1.01
Realized values: value1 = 1.00 value2 = 0.46 value3 = 10.11 value4 = 0.25 value5 = 0.77 value6 = 1.01
Realized values: value1 = 1.00 value2 = 0.38 value3 = 9.99 value4 = 0.96 value5 = 1.21 value6 = 1.00
Realized values: value1 = 1.00 value2 = 0.74 value3 = 9.61 value4 = 2.94 value5 = 0.95 value6 = 1.01

Providing Meta Information

There is the possibility to provide meta information with the declation of a DrillingProperty. This is achieved using specific attributes. The possible attributes are:

• AccessToVariableAttribute : It takes one argument of the type CommonProperty.VariableAccessType. This attribute is used to inform whether the property will be only fetched (CommonProperty.VariableAccessType.Readable) or if it can be assigned (CommonProperty.VariableAccessType.Assignable). In relation with the semantic definition of the property that is interpreted as the semantic will be turned into a sparql query (readable) or it will be used to inject the semantic in the DDHub (assignable).
• MandatoryAttribute: It takes one argument of the type CommonProperty.MandatoryType. This attribute is used to inform whether the property is mandatory and in the affirmative in which context. The value General means that it is always mandatory. The value None means that it is always optional. Other values can be combined together using a logical "or", therefore allowing to state that the property can be mandatory in one or several context. Example contexts are: Mechanical, Hydraulic, Directional, ... This attribute shall be defined only once for the property.
• SemanticFactAttribute: It takes two, three or more arguments: Subject, Verb and Object. Subject and Object belongs to either the enumeration Nouns.Enum or a string, while Verb is a choice from the enum Verbs.Enum. If Verb is ommitted then it is supposed to be BelongsToClass and the Object must be a Nouns.Enum. Both Nouns.Enum and Verbs.Enum are defined in the library DWIS.Vocabulary.Schemas which contains the vocabulary defined in the D-WIS project (see D-WIS.org). If there are more than three arguments, the additional one must come in pair and are strings. They correspond to attribute and value for the Object. This attribute is used to defined a true assertion about that property. The use of a string for the Subject or the Object is to refer to internal variables of the semantic definition. This attribute can be used multiple times therefore allowing to describe multiple facts about the property, i.e., a semantic network.
  • OptionalFactAttribute: It is a subclass of SemanticFactAttribute. When the property has an attribute AccessToVariableAttribute that is set to readable, and therefore a sparql query will be generated to populate the value of the property, then OptionalFactAttribute may be dropped in the sparql query in case there are no matching data. OptionalFactAttribute has an additional property called GroupIndex, a byte. The purpose of GroupIndex is to state that a set of OptionalFactAttribute are bound together when they use the same value for GroupIndex. This information is used to generate the multiple variant of Sparql queries that result from the combinatorial choices related to the OptionalFactAttribute. It can also have both a ParentGroupIndex and a GroupIndex. In that case, this is an option relative to the ParentGroupIndex option.
  • ExcludeFact and OptionalExcludeFact are used to define facts that will exclude data in a SparQL query, meaning that if the fact is present then the query will not select this data. The difference between ExcludeFact and OptionalExcludeFact is that an ExcludeFact is always tested while an OptionalExcludeFact will be tested only for the optional group index.
• SemanticDiracVariableAttribute: It takes one argument that is the name used for a DrillingSignal that will be used for the Value of this property.
• SemanticGaussianVariableAttribute: It takes 2 arguments or 3 arguments. The first one is the name of a DrillingSignal used in the semantic facts that is used as the Mean value of this property. The second argument is the name of a DrillingSignal used in the semantic facts and that is used as the StandardDeviation value of this property. The third one is a default value for the StandardDeviation.
• SemanticSensorVariableAttribute: It takes from 3 to 5 arguments. The three string arguments are respectively the variable names for the Mean, Precision and Accuracy. The two double arguments are respectively the default values for the Precision and Accuracy.
• SemanticFullScaleAttribute: It takes from 3 to 5 arguments. The three string arguments are respectively the variable names for the Mean, FullScale and ProportionError. The two double arguments are respectively the default values for the FullScale and ProportionError.
• SemanticUniformVariableAttribute: It takes two arguments that are the names of a DrillingSignal used in the semantic facts that are used as the Min and the Max value of this property.
• SemanticGeneralDistributionVariableAttribute: It takes one argument that is the name of a DrillingSignal used in the semantic facts to access the Histogram value of this property.
• SemanticExclusiveOrAttribute: It takes at least 2 arguments. This attribute is used to defined a list of the optional semantic facts that are exclusive from each other's.

classDiagram
    class AccessToVariableAttribute {
        +CommonProperty.VariableAccessType AccessType
    }
    class MandatoryAttribute {
        +CommonProperty.MandatoryType Mandatory
    }

classDiagram
    SemanticFactAttribute <|-- OptionalFactAttribute
    SemanticFactAttribute : +Nouns.Enum? Subject
    SemanticFactAttribute : +string? SubjectName
    SemanticFactAttribute : +Verbs.Enum Verb
    SemanticFactAttribute : +Nouns.Enum? Object
    SemanticFactAttribute : +string? ObjectName
    class OptionalFactAttribute {
        +byte GroupIndex
    }
    class SemanticDiracVariableAttribute {
        +string? Value
    }
    class SemanticGaussianVariableAttribute {
        +string? Mean
        +string? StandardDeviation
        +double? DefaultStandardDeviation
    }
    class SemanticUniformVariableAttribute {
        +string? Min
        +string? Max
    }
    class SemanticGeneralDistributionVariableAttribute {
        +string? Histogram
    }
    class SemanticSensorVariableAttribute {
        +string? MeanVariable
        +string? PrecisionVariable
        +string? AccuracyVariable
        +double? DefaultPrecision
        +double? DefaultAccuracy
   }
   class SemanticFullScaleVariableAttribute {
        +string? MeanVariable
        +string? FullScaleVariable
        +string? PrecisionErrorVariable
        +double? DefaultFullScale
        +double? DefaultPrecisionError
   }
   class SemanticExclusiveOrAttribute {
        +byte[]? ExclusiveOr
   }

Example

Here is an example:

using OSDC.DotnetLibraries.Drilling.DrillingProperties;
using OSDC.UnitConversion.Conversion;
using OSDC.UnitConversion.Conversion.DrillingEngineering;
using DWIS.Vocabulary.Schemas;

namespace DrillingProperties
{
      public class TestClass
    {
        [AccessToVariable(CommonProperty.VariableAccessType.Assignable)]
        [Mandatory(CommonProperty.MandatoryType.General)]
        [SemanticGaussianVariable("BitDepthValue#01", "BitDepthStandardDeviationValue#01")]
        [SemanticFact("BitDepthValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BitDepth#01", Nouns.Enum.BitDepth)]
        [SemanticFact("BitDepth#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.Depth)]
        [SemanticFact("BitDepth#01", Nouns.Enum.DerivedMeasurement)]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasDynamicValue, "BitDepthValue#01")]
        [SemanticFact("BitDepth#01", Verbs.Enum.IsMechanicallyLocatedAt, "Bit#01")]
        [SemanticFact("WGS84VerticalDatum", Nouns.Enum.WGS84VerticalLocation)]
        [SemanticFact("VerticalDepthFrame", Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "WGS84VerticalDatum")]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("Bit#01", Nouns.Enum.Bit)]
        [SemanticFact("BitDepthStandardDeviation#01", Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("BitDepthStandardDeviationValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BitDepthStandardDeviation#01", Verbs.Enum.HasDynamicValue, "BitDepthStandardDeviationValue#01")]
        [SemanticFact("GaussianUncertainty#01", Nouns.Enum.GaussianUncertainty)]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasUncertainty, "GaussianUncertainty")]
        [SemanticFact("GaussianUncertainty#01", Verbs.Enum.HasUncertaintyStandardDeviation, "BitDepthStandardDeviation#01")]
        public GaussianDrillingProperty MeasuredBitDepth { get; set; } = new GaussianDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Readable)]
        [Mandatory(CommonProperty.MandatoryType.PipeHandling| CommonProperty.MandatoryType.Mechanical | CommonProperty.MandatoryType.Hydraulic)]
        [SemanticDiracVariable("BlockPositionSPValue#01")]
        [SemanticFact("BlockPositionSPValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BlockPositionSPValue#01", Verbs.Enum.IsOfMeasurableQuantity, PhysicalQuantity.QuantityEnum.StandardLength)]
        [SemanticFact("BlockPositionSP#01", Nouns.Enum.HookPosition)]
        [SemanticFact("BlockPositionSP#01", Nouns.Enum.SetPoint)]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.HasDynamicValue, "BlockPositionSPValue#01")]
        [SemanticFact("DrillFloorDatum", Nouns.Enum.DerrickFloorVerticalLocation)]
        [SemanticFact("VerticalDepthFrame", Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "DrillFloorDatum")]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.IsMechanicallyLocatedAt, "Elevator#01")]
        [SemanticFact("Elevator#01", Nouns.Enum.Elevator)]
        public ScalarDrillingProperty BlockPositionSetPoint { get; set;} = new ScalarDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Assignable)]
        [Mandatory(CommonProperty.MandatoryType.Mechanical | CommonProperty.MandatoryType.Hydraulic | CommonProperty.MandatoryType.MaterialTransport)]
        [SemanticUniformVariable("TopOfStringVelocityUpwardMinValue#01", "TopOfStringVelocityUpwardMaxValue#01")]
        [SemanticFact("TopOfStringVelocityUpward#01", Nouns.Enum.HookVelocity)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.BlockVelocity)]
        [SemanticFact("TopOfStringVelocityUpwardMin#01", Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("TopOfStringVelocityUpwardMax#01", Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("TopOfStringVelocityUpwardMinValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("TopOfStringVelocityUpwardMaxValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("TopOfStringVelocityUpwardMin#01", Verbs.Enum.HasDynamicValue, "TopOfStringVelocityUpwardMinValue#01")]
        [SemanticFact("TopOfStringVelocityUpwardMax#01", Verbs.Enum.HasDynamicValue, "TopOfStringVelocityUpwardMaxValue#01")]
        [SemanticFact("TopOfStringVelocityUpward#01",  Nouns.Enum.Limit)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsMechanicallyLocatedAt, Nouns.Enum.DrillString)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsPhysicallyLocatedAt, Nouns.Enum.TopOfStringReferenceLocation)]
        [SemanticFact("UniformUncertainty#01", Nouns.Enum.MinMaxUncertainty)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.HasUncertainty, "UniformUncertainty#01")]
        [SemanticFact("UniformUncertainty#01", Verbs.Enum.HasUncertaintyMin, "TopOfStringVelocityUpwardMin#01")]
        [SemanticFact("UniformUncertainty#01", Verbs.Enum.HasUncertaintyMax, "TopOfStringVelocityUpwardMax#01")]
        public UniformDrillingProperty TopOfStringSpeedUpwardLimit { get; set;} = new UniformDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Readable)]
        [Mandatory(CommonProperty.MandatoryType.None)]
        [SemanticGeneralDistributionVariable("EstimatedBitDepthHistogramValue#01")]
        [SemanticFact("EstimatedBitDepth#01", Nouns.Enum.BitDepth)]
        [SemanticFact("EstimatedBitDepth#01", Nouns.Enum.ComputedData)]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.Depth)]
        [SemanticFact("WGS84VerticalDatum", Nouns.Enum.WGS84VerticalLocation)]
        [SemanticFact("VerticalDepthFrame", Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "WGS84VerticalDatum")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsMechanicallyLocatedAt, "Bit#01")]
        [SemanticFact("Bit#01", Nouns.Enum.Bit)]
        [SemanticFact("TransientT&D#01", Nouns.Enum.ComputationUnit)]
        [OptionalFact(0, "TransientT&D#01", Nouns.Enum.ModelledDegreeOfFreedom, "DegreeOfFreedom", "4")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsTransformationOutput, "TransientT&D#01")]
        [SemanticFact("EstimatedBitDepthHistogramValue#01", Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("EstimatedBitDepthHistogram#01", Nouns.Enum.GenericUncertainty)]
        [SemanticFact("GeneralUncertaintyDistribution#01", Nouns.Enum.GenericUncertainty)]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.HasUncertainty, "GeneralUncertaintyDistribution#01")]
        [SemanticFact("GeneralUncertaintyDistribution#01", Verbs.Enum.HasUncertaintyHistogram, "EstimatedBitDepthHistogram#01")]
        public GeneralDistributionDrillingProperty EstimatedBitDepth { get; set; } = new GeneralDistributionDrillingProperty();
    }
    class Example
    {
        static void Main()
        {
            TestClass testClass = new TestClass();
            testClass.MeasuredBitDepth.Mean = 1000.0;
            testClass.MeasuredBitDepth.StandardDeviation = 0.1;
            testClass.BlockPositionSetPoint.ScalarValue = 10.0;
            testClass.TopOfStringSpeedUpwardLimit.Min = 0.10;
            testClass.TopOfStringSpeedUpwardLimit.Max = 0.11;
            testClass.EstimatedBitDepth.Histogram = new Tuple<double, double>[]
            {
                new Tuple<double, double>(999.8, 0.05),
                new Tuple<double, double>(999.9, 0.10),
                new Tuple<double, double>(1000.0, 0.25),
                new Tuple<double, double>(1000.1, 0.50),
                new Tuple<double, double>(1000.2, 0.08),
                new Tuple<double, double>(1000.3, 0.02)
            };
        }

    }
}

Transfer of Meta Information via Json

Json schema does not support the possibility to define attributes (C#), annotations (Java), decoration (Python). As most data exchanges utilize json formatting for the payload, another way to convey the meta information had to be found. A static method GenerateDrillingPropertyMetaData.GetDrillingPropertyMetaData is available to generate a dictionary of DrillingProperty described in an Assembly. The keys of the dictionary are the Tuple<string, string> where the first item is the classname and the second item is the property name of the DrillingProperty. The values are instances of the class MetaDataDrillingProperty. A MetaDataDrillingProperty has the following properties:

• Namespace, a string that contains the namespace of the class where this property is defined
• ClassName, a string that contains the class name where this property is defined
• PropertyName, a string that contains the name of the property
• MandatoryType, which is of type CommonProperty.MandatoryType?
• SemanticFacts, which is of type List<SemanticFact>?

This method can be used to generate the meta information of all the properties defined in an Assembly.

The dictionary can be serialized to json and stored on a file together with the json schema to supplement the data model with the attributes, annotations, decorations that could not be saved inside the json schema.

In the context of the generation of code from a json schema, the dictionary can be used to add attributes (C#), annotations (Java) or decoration (Python) to the generated properties in the classes.

In the context of a micro-service architecture, the generated dictionary can be made available through the Get interface of a specific end-point of the micro-service.

Example

Here is an example.

using OSDC.DotnetLibraries.Drilling.DrillingProperties;
using OSDC.UnitConversion.Conversion;
using OSDC.UnitConversion.Conversion.DrillingEngineering;
using DWIS.Vocabulary.Schemas;
using System.Reflection;
using System.Text.Json;

namespace DrillingProperties
{
    public class TestClass
    {
        [AccessToVariable(CommonProperty.VariableAccessType.Assignable)]
        [Mandatory(CommonProperty.MandatoryType.General)]
        [SemanticGaussianVariable("BitDepthValue#01", "BitDepthStandardDeviationValue#01")]
        [SemanticFact("BitDepthValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BitDepth#01",  Nouns.Enum.BitDepth)]
        [SemanticFact("BitDepth#01",  Nouns.Enum.DerivedMeasurement)]
        [SemanticFact("BitDepth#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.Depth)]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasDynamicValue, "BitDepthValue#01")]
        [SemanticFact("WGS84VerticalDatum",  Nouns.Enum.WGS84VerticalLocation)]
        [SemanticFact("VerticalDepthFrame",  Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "WGS84VerticalDatum")]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("BitDepth#01", Verbs.Enum.IsMechanicallyLocatedAt, "Bit#01")]
        [SemanticFact("Bit#01",  Nouns.Enum.Bit)]
        [SemanticFact("BitDepthStandardDeviation#01",  Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("BitDepthStandardDeviationValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BitDepthStandardDeviation#01", Verbs.Enum.HasDynamicValue, "BitDepthStandardDeviationValue#01")]
        [SemanticFact("GaussianUncertainty#01",  Nouns.Enum.GaussianUncertainty)]
        [SemanticFact("BitDepth#01", Verbs.Enum.HasUncertainty, "GaussianUncertainty")]
        [SemanticFact("GaussianUncertainty#01", Verbs.Enum.HasUncertaintyStandardDeviation, "BitDepthStandardDeviation#01")]
        public GaussianDrillingProperty MeasuredBitDepth { get; set; } = new GaussianDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Readable)]
        [Mandatory(CommonProperty.MandatoryType.PipeHandling | CommonProperty.MandatoryType.Mechanical | CommonProperty.MandatoryType.Hydraulic)]
        [SemanticDiracVariable("BlockPositionSPValue#01")]
        [SemanticFact("BlockPositionSPValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("BlockPositionSP#01",  Nouns.Enum.HookPosition)]
        [SemanticFact("BlockPositionSP#01",  Nouns.Enum.SetPoint)]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.IsOfMeasurableQuantity, PhysicalQuantity.QuantityEnum.StandardLength)]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.HasDynamicValue, "BlockPositionSPValue#01")]
        [SemanticFact("DrillFloorDatum",  Nouns.Enum.DerrickFloorVerticalLocation)]
        [SemanticFact("VerticalDepthFrame",  Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "DrillFloorDatum")]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("BlockPositionSP#01", Verbs.Enum.IsMechanicallyLocatedAt, "Elevator#01")]
        [SemanticFact("Elevator#01",  Nouns.Enum.Elevator)]
        public ScalarDrillingProperty BlockPositionSetPoint { get; set; } = new ScalarDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Assignable)]
        [Mandatory(CommonProperty.MandatoryType.Mechanical | CommonProperty.MandatoryType.Hydraulic | CommonProperty.MandatoryType.MaterialTransport)]
        [SemanticUniformVariable("TopOfStringVelocityUpwardMinValue#01", "TopOfStringVelocityUpwardMaxValue#01")]
        [SemanticFact("TopOfStringVelocityUpward#01",  Nouns.Enum.HookVelocity)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.BlockVelocity)]
        [SemanticFact("TopOfStringVelocityUpwardMin#01",  Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("TopOfStringVelocityUpwardMax#01",  Nouns.Enum.DrillingDataPoint)]
        [SemanticFact("TopOfStringVelocityUpwardMinValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("TopOfStringVelocityUpwardMaxValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("TopOfStringVelocityUpwardMin#01", Verbs.Enum.HasDynamicValue, "TopOfStringVelocityUpwardMinValue#01")]
        [SemanticFact("TopOfStringVelocityUpwardMax#01", Verbs.Enum.HasDynamicValue, "TopOfStringVelocityUpwardMaxValue#01")]
        [SemanticFact("TopOfStringVelocityUpward#01",  Nouns.Enum.Limit)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsMechanicallyLocatedAt, Nouns.Enum.DrillString)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.IsPhysicallyLocatedAt, Nouns.Enum.TopOfStringReferenceLocation)]
        [SemanticFact("UniformUncertainty#01",  Nouns.Enum.MinMaxUncertainty)]
        [SemanticFact("TopOfStringVelocityUpward#01", Verbs.Enum.HasUncertainty, "UniformUncertainty#01")]
        [SemanticFact("UniformUncertainty#01", Verbs.Enum.HasUncertaintyMin, "TopOfStringVelocityUpwardMin#01")]
        [SemanticFact("UniformUncertainty#01", Verbs.Enum.HasUncertaintyMax, "TopOfStringVelocityUpwardMax#01")]
        public UniformDrillingProperty TopOfStringSpeedUpwardLimit { get; set; } = new UniformDrillingProperty();

        [AccessToVariable(CommonProperty.VariableAccessType.Readable)]
        [Mandatory(CommonProperty.MandatoryType.None)]
        [SemanticGeneralDistributionVariable("EstimatedBitDepthHistogramValue#01")]
        [SemanticFact("EstimatedBitDepth#01",  Nouns.Enum.BitDepth)]
        [SemanticFact("EstimatedBitDepth#01",  Nouns.Enum.ComputedData)]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsOfMeasurableQuantity, DrillingPhysicalQuantity.QuantityEnum.Depth)]
        [SemanticFact("WGS84VerticalDatum",  Nouns.Enum.WGS84VerticalLocation)]
        [SemanticFact("VerticalDepthFrame",  Nouns.Enum.VerticalDepthFrame)]
        [SemanticFact("VerticalDepthFrame", Verbs.Enum.HasReferenceFrameOrigin, "WGS84VerticalDatum")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.HasReferenceFrame, "VerticalDepthFrame")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsMechanicallyLocatedAt, "Bit#01")]
        [SemanticFact("Bit#01",  Nouns.Enum.Bit)]
        [SemanticFact("TransientT&D#01",  Nouns.Enum.ComputationUnit)]
        [OptionalFact(0, "TransientT&D#01",  Nouns.Enum.ModelledDegreeOfFreedom, "DegreeOfFreedom", "4")]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.IsTransformationOutput, "TransientT&D#01")]
        [SemanticFact("EstimatedBitDepthHistogramValue#01",  Nouns.Enum.DynamicDrillingSignal)]
        [SemanticFact("EstimatedBitDepthHistogram#01",  Nouns.Enum.GenericUncertainty)]
        [SemanticFact("GeneralUncertaintyDistribution#01",  Nouns.Enum.GenericUncertainty)]
        [SemanticFact("EstimatedBitDepth#01", Verbs.Enum.HasUncertainty, "GeneralUncertaintyDistribution#01")]
        [SemanticFact("GeneralUncertaintyDistribution#01", Verbs.Enum.HasUncertaintyHistogram, "EstimatedBitDepthHistogram#01")]
        public GeneralDistributionDrillingProperty EstimatedBitDepth { get; set; } = new GeneralDistributionDrillingProperty();
    }
    class Example
    {
        static void Main()
        {          
            var dict = GenerateDrillingPropertyMetaData.GetDrillingPropertyMetaData(Assembly.GetExecutingAssembly());
            if (dict != null)
            {
                foreach (var keyValue in dict)
                {
                    Console.WriteLine("(" + keyValue.Key.Item1 + ", " + keyValue.Key.Item2 + ") " + "=" + JsonSerializer.Serialize(keyValue.Value));
                }
            }
        }

    }
}

The output is the following:

(TestClass, MeasuredBitDepth) ={"Namespace":"DrillingProperties","ClassName":"TestClass","PropertyName":"MeasuredBitDepth","AccessType":2,"SemanticGaussianMeanVariable":"BitDepthValue#01","SemanticGaussianStandardDeviationVariable":"BitDepthStandardDeviationValue#01","SemanticProportionErrorVariable":null,"SemanticExclusiveOrs":[],"MandatoryType":65535,"SemanticFacts":[{"SubjectName":"BitDepthValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":58,"Object":79,"ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":58,"Object":139,"ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":104,"ObjectDrillingQuantity":3,"ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":54,"ObjectName":"BitDepthValue#01","ObjectAttributes":[]},{"SubjectName":"WGS84VerticalDatum","Verb":58,"Object":274,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":58,"Object":318,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":97,"ObjectName":"WGS84VerticalDatum","ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":96,"ObjectName":"VerticalDepthFrame","ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":94,"ObjectName":"Bit#01","ObjectAttributes":[]},{"SubjectName":"Bit#01","Verb":58,"Object":164,"ObjectAttributes":[]},{"SubjectName":"BitDepthStandardDeviation#01","Verb":58,"Object":76,"ObjectAttributes":[]},{"SubjectName":"BitDepthStandardDeviationValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"BitDepthStandardDeviation#01","Verb":54,"ObjectName":"BitDepthStandardDeviationValue#01","ObjectAttributes":[]},{"SubjectName":"GaussianUncertainty#01","Verb":58,"Object":385,"ObjectAttributes":[]},{"SubjectName":"BitDepth#01","Verb":114,"ObjectName":"GaussianUncertainty","ObjectAttributes":[]},{"SubjectName":"GaussianUncertainty#01","Verb":120,"ObjectName":"BitDepthStandardDeviation#01","ObjectAttributes":[]}],"OptionalFacts":null}
(TestClass, BlockPositionSetPoint) ={"Namespace":"DrillingProperties","ClassName":"TestClass","PropertyName":"BlockPositionSetPoint","AccessType":1,"SemanticDiracVariable":"BlockPositionSPValue#01","SemanticProportionErrorVariable":null,"SemanticExclusiveOrs":[],"MandatoryType":19,"SemanticFacts":[{"SubjectName":"BlockPositionSPValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":58,"Object":91,"ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":58,"Object":125,"ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":104,"ObjectPhysicalQuantity":65,"ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":54,"ObjectName":"BlockPositionSPValue#01","ObjectAttributes":[]},{"SubjectName":"DrillFloorDatum","Verb":58,"Object":277,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":58,"Object":318,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":97,"ObjectName":"DrillFloorDatum","ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":96,"ObjectName":"VerticalDepthFrame","ObjectAttributes":[]},{"SubjectName":"BlockPositionSP#01","Verb":94,"ObjectName":"Elevator#01","ObjectAttributes":[]},{"SubjectName":"Elevator#01","Verb":58,"Object":183,"ObjectAttributes":[]}],"OptionalFacts":null}
(TestClass, TopOfStringSpeedUpwardLimit) ={"Namespace":"DrillingProperties","ClassName":"TestClass","PropertyName":"TopOfStringSpeedUpwardLimit","AccessType":2,"SemanticProportionErrorVariable":null,"SemanticUniformMinVariable":"TopOfStringVelocityUpwardMinValue#01","SemanticUniformMaxVariable":"TopOfStringVelocityUpwardMaxValue#01","SemanticExclusiveOrs":[],"MandatoryType":11,"SemanticFacts":[{"SubjectName":"TopOfStringVelocityUpward#01","Verb":58,"Object":92,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpward#01","Verb":104,"ObjectDrillingQuantity":0,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMin#01","Verb":58,"Object":76,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMax#01","Verb":58,"Object":76,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMinValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMaxValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMin#01","Verb":54,"ObjectName":"TopOfStringVelocityUpwardMinValue#01","ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpwardMax#01","Verb":54,"ObjectName":"TopOfStringVelocityUpwardMaxValue#01","ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpward#01","Verb":58,"Object":135,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpward#01","Verb":94,"Object":177,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpward#01","Verb":98,"Object":301,"ObjectAttributes":[]},{"SubjectName":"UniformUncertainty#01","Verb":58,"Object":387,"ObjectAttributes":[]},{"SubjectName":"TopOfStringVelocityUpward#01","Verb":114,"ObjectName":"UniformUncertainty#01","ObjectAttributes":[]},{"SubjectName":"UniformUncertainty#01","Verb":117,"ObjectName":"TopOfStringVelocityUpwardMin#01","ObjectAttributes":[]},{"SubjectName":"UniformUncertainty#01","Verb":118,"ObjectName":"TopOfStringVelocityUpwardMax#01","ObjectAttributes":[]}],"OptionalFacts":null}
(TestClass, EstimatedBitDepth) ={"Namespace":"DrillingProperties","ClassName":"TestClass","PropertyName":"EstimatedBitDepth","AccessType":1,"SemanticProportionErrorVariable":null,"SemanticGeneralDistributionHistogramVariable":"EstimatedBitDepthHistogramValue#01","SemanticExclusiveOrs":[],"MandatoryType":0,"SemanticFacts":[{"SubjectName":"EstimatedBitDepth#01","Verb":58,"Object":79,"ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepth#01","Verb":58,"Object":141,"ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepth#01","Verb":104,"ObjectDrillingQuantity":3,"ObjectAttributes":[]},{"SubjectName":"WGS84VerticalDatum","Verb":58,"Object":274,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":58,"Object":318,"ObjectAttributes":[]},{"SubjectName":"VerticalDepthFrame","Verb":97,"ObjectName":"WGS84VerticalDatum","ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepth#01","Verb":96,"ObjectName":"VerticalDepthFrame","ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepth#01","Verb":94,"ObjectName":"Bit#01","ObjectAttributes":[]},{"SubjectName":"Bit#01","Verb":58,"Object":164,"ObjectAttributes":[]},{"SubjectName":"TransientT\u0026D#01","Verb":58,"Object":16,"ObjectAttributes":[]},{"SubjectName":"TransientT\u0026D#01","Verb":58,"Object":255,"ObjectAttributes":[{"Item1":"DegreeOfFreedom","Item2":"4"}]},{"SubjectName":"EstimatedBitDepth#01","Verb":37,"ObjectName":"TransientT\u0026D#01","ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepthHistogramValue#01","Verb":58,"Object":143,"ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepthHistogram#01","Verb":58,"Object":386,"ObjectAttributes":[]},{"SubjectName":"GeneralUncertaintyDistribution#01","Verb":58,"Object":386,"ObjectAttributes":[]},{"SubjectName":"EstimatedBitDepth#01","Verb":114,"ObjectName":"GeneralUncertaintyDistribution#01","ObjectAttributes":[]},{"SubjectName":"GeneralUncertaintyDistribution#01","Verb":123,"ObjectName":"EstimatedBitDepthHistogram#01","ObjectAttributes":[]}],"OptionalFacts":[{"GroupIndex":0,"SubjectName":"TransientT\u0026D#01","Verb":58,"Object":255,"ObjectAttributes":[{"Item1":"DegreeOfFreedom","Item2":"4"}]}]}

Dependence

This library depends on the following nugets:

• DWIS.Vocabulary.Schemas
• OSDC.DotnetLibraries.General.Statistics
• OSDC.UnitConversion.Conversion.DrillingEngineering