Stratum Environmental Services (SES)

Environmental Matters...

Trusted Source

Years of experience and commitment to the highest quality data. Stratum Reservoir provides environmental services for Emissions Compliance, lab and field services.

Full Emissions Compliance Testing

  • C6/C7+ natural gas stream analysis in accordance with standard GPA-2261
  • Extended natural gas stream analysis in accordance with standard GPA-2286
  • Extended hydrocarbon liquid stream analysis in accordance with standard GPA-2186
  • Hydrocarbon Flash Liberation Studies in accordance with peer-reviewed proprietary analytical standard that Stratum has adopted
  • Water Chemistry, dissolved and fixed gases, BTEX, and δ13C and other isotopic analyses

Gas Storage

A gas storage field operator needs to constantly monitor the integrity of the gas storage unit.  To determine whether or not a well outside the storage field is producing storage gas, the storage field operator must know the natural gas isotopic composition (the “gas fingerprint”) of (1) the storage gas in the storage field and (2) the naturally occurring “native gas” found outside the storage unit.

A storage field operator should prepare now (in advance) by periodically obtaining isotopic data on injection and withdrawal gases (multiple times a year).   Such data can be used to build a database that will enable the storage field operator to know, at any point in the future, the range of compositions of gas present across the storage field.  That database will make it easier for a storage field  operator to determine at any future time if a well outside storage field boundary is producing storage gas.

Stratum provides the needed gas isotopic analyses of injection and withdrawal gases in gas storage fields. Stratum geochemists can also serve as expert witnesses to either party during litigation related to storage field integrity.

Dissolved Gas Screening and Complete Gas Fingerprinting

Expedited Dissolved Gas Screening and pre-determined concentration thresholds for full fingerprinting provides fast, reliable compositional data from VOA vials or IsoFlasksTM.

Screening and Full Compositions from a single sample eliminates the need to collect and ship multiple samples to multiple locations.

Screening cost is credited to the full fingerprinting analysis package when threshold limits are met.

Bradenhead Gas Testing

Undesired surface casing pressure (SfCP) can indicate well integrity issues.  Isotopic similarities/differences between production gas and bradenhead gas determines the source of the stray gas so that a suitable solution can be implemented.

Whether a casing leak, faulty cement bond, or an unknown intermediate gas source, high precision isotopic fingerprinting is the most cost-effective solution to SfCP issues.

Stray Hydrocarbon Identification

Isotech scientists pioneered the use of isotopic analysis for stray gas identification and developed the techniques that have now become the industry standard.
The stable isotopes of methane (13C and δD) can provide information on the mechanism of formation. For instance, stable isotope analysis can help to determine whether a gas is biogenic or thermogenic.

  • fire and explosion investigations – differentiating gas sources
  • identifying pipeline leaks
  • identifying gas that has leaked from underground gas storage reservoirs
  • monitoring groundwater quality in areas of energy production

Routine Groundwater Testing

Nitrogen and oxygen isotopes are used to identify the source of elevated nitrate concentration in natural water and to study the extent of denitrification.

Tritium and radiocarbon analyses are used to determine the age of groundwater supplies to evaluate how well protected they are from surface contamination.  And radiocarbon and stable isotopes have been used to study past environments and paleoclimates.

Detailed ionic compositions of water are run using IC and ICP analysis to determine all major and trace elements present in groundwater.