Class Description
Analogs representing oil dissolved gas analysis result.
Attributes
| Name | Type | Description |
|---|---|---|
| methane | CH4 concentration (in ppm, specifically in microlitre/litre). | |
| ethane | C2H6 concentration (in ppm, specifically in microlitre/litre). | |
| ethylene | C2H4 concentration (in ppm, specifically in microlitre/litre). | |
| acetylene | C2H2 concentration (in ppm, specifically in microlitre/litre). | |
| carbonMonoxide | CO concentration (in ppm, specifically in microlitre/litre). | |
| propane | C3H8 concentration (in ppm, specifically in microlitre/litre). | |
| propene | C3H6 concentration (in ppm, specifically in microlitre/litre). | |
| carbonDioxide | CO2 concentration (in ppm, specifically in microlitre/litre). | |
| oxygen | O2 concentration (in ppm, specifically in microlitre/litre). | |
| nitrogen | N2 concentration (in ppm, specifically in microlitre/litre). | |
| totalDissolvedGasPercent | Total dissolved gas in oil (in percent by volume). Derived from the total area of all the gas peaks in the chromatogram. | |
| totalCombustibleGasPercent | Total Combustible Gas (TCG) measured in headspace (in percent by volume). | |
| butane | C4H10 concentration (in ppm, specifically in microlitre/litre). | |
| carbon | C? concentration (in ppm, specifically in microlitre/litre). | |
| carbon3 | C3 concentration (in ppm, specifically in microlitre/litre). | |
| carbon4 | C4 concentration (in ppm, specifically in microlitre/litre). | |
| isobutane | isoC4 (C4H10) concentration (in ppm, specifically in microlitre/litre). Isobutane is also known as methylpropane. | |
| equivalentTCGPercent | Equivalent Total Combustible Gas (ETCG) percent. | |
| An estimate, calculated from the dissolved-gas concentrations and the oil sample temperature, of what the TCG would be in a gas space in equilibrium with the oil. ETCG reflects what the TCG would be in air spaces near the oil. | ||
| hydrogen | H2 concentration (in ppm, specifically in microlitre/litre). | |
| totalHeatGas | Sum of concentrations of methane, ethane, and ethylene (in ppm, specifically in microlitre/litre). Used in some diagnostic gas ratios, especially THG/acetylene, which compares “heat gas” to “arcing gas.” | |
| totalDissolvedCombustibleGas | Total dissolved combustible gas concentration (in ppm, specifically in microlitre/litre). Calculated by adding the ppm of combustible gasses: hydrogen (H2), methane (CH4), ethane (C2H6), ethylene (C2H4), acetylene (C2H2), and carbon monoxide (CO). | |
| totalPartialPressure | Total partial pressure (in Pa). | |
| Calculated value reflecting total of partial pressures of all combustible gasses. | ||
| estimatedSafeHandlingLimit | Estimated Safe Handling Limit (ESHL) (in percent). Estimated safe handling limit is an estimate of the lower flammability limit (LFL) of the combustible gas mixture which the dissolved gas in the oil would give off by the oil if exposed to air. | |
| Expressed in percent like the equivalent total combustible gas percent, it is calculated from the dissolved-gas concentrations, the oil sample temperature, and the lower flammability limits of the individual combustible gases. | ||
| hydran | Measured composite of dissolved fault gas concentrations (in ppm, specifically in microlitre/litre). Relative sensitivity | |
| - H2: 100 % of concentration | ||
| - CO: 15 ± 4 % of concentration | ||
| - C2H2: 8 ± 2 % of concentration | ||
| - C2H4: 1.5 ± 0.5 % of concentration. | ||
| hydranPredicted | Predicted hydran value (in ppm, specifically in microlitre/litre), calculated based on individual measured dissolved gas concentrations. | |
| - H2: 100 % of concentration | ||
| - CO: 15 ± 4 % of concentration | ||
| - C2H2: 8 ± 2 % of concentration | ||
| - C2H4: 1.5 ± 0.5 % of concentration |
Relationships
Inherits from
- None
Descendant classes
- No descendant classes
Leaf/Root class
| IsLeaf | IsRoot |
|---|---|
| False | False |
Associations
None