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Table 1 MIxS-HCR package items. More detailed description of the field names is provided in the Additional file 1 [see MIxS HCR detailed table]

From: MIxS-HCR: a MIxS extension defining a minimal information standard for sequence data from environments pertaining to hydrocarbon resources

MIxS-HCR package

HCR general properties

 Hydrocarbon resource type

 Hydrocarbon type produced

 Basin name

 Field name

 Reservoir name

 Hydrocarbon resource original temperature

 Depth (TVDSS) of hydrocarbon resource temperature

 Hydrocarbon resource original pressure

 Depth (TVDSS) of hydrocarbon resource pressure

 Permeability

 Porosity

 Lithology

 Depositional environment

 Hydrocarbon resource geologic age

 Oil water contact depth

 Formation water salinity

 Sulfate in formation water

 Vfa in formation water

 Source rock kerogen type

 Source rock lithology

 Source rock depositional environment

 Source rock geologic age

HCR production properties

 Production start date

 Production rate

 Water production rate

 Water cut

 Injection water fraction

 Secondary and tertiary recovery methods and start date

 Injection water breakthrough date of specific well

 Biocide administration

 Biocide administration method

 Chemical treatment

 Chemical treatment method

 Corrosion rate at sample location

HCR sampling properties

 Sample well name

 Well identification number

 Sample type

 Sample subtype

 Sample collection point

 Temperature

 Pressure

 Sample true vertical depth subsea

 Sample measured depth

 Elevation

 Oxygenation status of sample

 Preservative added to sample

 Sample transport conditions

 Sample storage temperature

 Sample storage duration

 Sample storage location

 Sample vol., weight, or area swabbed for DNA extraction

 Organism count

 Organism count qPCR information

HCR water chemistry

 pH

 Sample salinity

 Alkalinity

 Sulfate

 Sulfide

 Total sulfur

 Nitrate

 Nitrite

 Ammonium

 Total nitrogen

 Dissolved iron

 Sodium

 Chloride

 Potassium

 Magnesium

 Calcium

 Total iron

 Dissolved organic carbon

 Dissolved inorganic carbon

 Dissolved inorganic phosphorus

 Total phosphorus

 Suspended solids

 Density

 Dissolved carbon dioxide

 Dissolved oxygen

 Volatile fatty acids

 Benzene

 Toluene

 Ethylbenzene

 Xylene

HCR hydrocarbon chemistry

 API gravity

 Total Acid Number

 Viscosity

 Pour point

 Saturates wt%

 Aromatics wt%

 Resins wt%

 Asphaltenes wt%

Other properties

 Miscellaneous parameter

 Additional info