12.11.15 StimISO13503_2Properties

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

ISO13503-2 properties.

Table 12.11.15-1 Attributes

Name

Type

Notes

AbsoluteDensity

MassPerVolumeMeasure

The density the material would have if no intra-granular porosity is present. (e.g. Boyle’s Law porosimetry).

AcidSolubility

MassPerMassMeasure

The solubility of a proppant in 12:3 HCl:HF for 30 minutes at 150°F is an indication of the amount of soluble materials (i.e. carbonates, feldspars, iron oxides, clays, etc) present in the proppant.

ApparentDensity

MassPerVolumeMeasure

Apparent density excludes extra-granular porosity by placing a known mass in a volume of fluid and determining how much of the fluid is displaced (Archimedes).

BulkDensity

MassPerVolumeMeasure

Bulk density includes both the proppant and the porosity. This is measured by filling a known volume with dry proppant and measuring the weight.

ClustersPercent

DimensionlessMeasure

Percentage of undesirable agglomerated discrete proppant particles which typically occurs more with inefficiently processed natural sand proppants as opposed to manufactured ceramic proppants. ISO 13503-2 and API RP19C limit the mass of clusters to less than 1%.

KValue

double

Crush test classification indicating the highest stress level at which a proppant generated no more than 10% crushed material rounded down to the nearest 1,000 psi during a crush test. For example, a value of 14 means ‘14K’ which is 14000 psi.

LossOnIgnition

DimensionlessMeasure

A mass loss (gravimetric) test method applied to coated proppants only, which determines the mass of resin coating applied to a natural sand or manufactured proppant by means of thorough combustion of the flammable resin from the nonflammable proppant. Reported as a % of original mass.

MeanParticleDiameter

LengthMeasure

The mean diameter of particles in a sample of proppant.

MedianParticleDiameter

LengthMeasure

The median diameter of particles in a sample of proppant.

Roundness

double

Krumbein Roundness Shape Factor that is a measure of the relative sharpness of grain corners or of grain curvature. Krumbein and Sloss (1963) are the most widely used method of determining shape factors.

SpecificGravity

double

Not formally part of ISO 13503.2 properties, the specific gravity is the apparent density of the proppant divided by the density of water.

Sphericity

double

Krumbein Sphericity Shape Factor that is a measure of how closely a proppant particle approaches the shape of a sphere. Krumbein and Sloss (1963) are the most widely used method of determining shape factors.

Turbidity

double

A measure of water clarity, how much the material suspended in water decreases the passage of light through the water.

Unit of measure may be Nephelometric Turbidity Unit (NTU), but may vary based upon the detector geometry.

uid

String64

Unique identifier for this instance of StimISO13503_2Properties.

Table 12.11.15-2 Associations

Association

Notes

From: StimISO13503_2Properties.SieveAnalysisData

0..*To: ISO13503_2SieveAnalysisData

Association

 

From: StimISO13503_2Properties.CrushTestData

0..*To: ISO13503_2CrushTestData

Association

 

From: StimProppantAgent.ISO13503_2Properties

0..*To: StimISO13503_2Properties

Association