Hydrogen Sulphide (Sour Gas) Test Facilities
Hydrogen sulphide (H2S) is encountered in several industries
with which MERL has involvement; in oil and gas production it can
component of the produced fluids and in the automotive industry it
can occur in degraded engine oils. As a highly reactive chemical
species it can severely degrade many polymeric components, resulting
in performance deterioration. Examples include sealing applications,
pipelines and adhesives.
MERL has the facilities for, and extensive knowledge of, polymer/H2S
compatibility investigations, so that studies can be undertaken to
measure service life and scientifically justify their extension where
appropriate. Seals can be assessed to API 6A and 14A, NACE TM-0187
and NORSOK M710 for qualification for High Pressure duties.
H2S applications experience includes:
- Compressor seals, valve seals
- Flowlines (flexible pipe, umbilical, hose)
- Pipeline insulation (effect of absorbed fluid on properties)
- Vessel linings
- Automotive seals
Permeation testing can be undertaken with sour gases in some cases.
This enables quantities of gas passing through pipes and seals to
be estimated and hence whether the potential for corrosion of metallic
Materials tested include:
Elastomers - chemically resistant (e.g. HNBR, FKM, TFE/P, FFKM),
thermally resistant (e.g. VMQ) and high mechanical duty types (e.g.
Thermoplastics - corrosion resistant (e.g. PTFE, PVDF, ETFE, FEP,
PFA, PEEK, PPS, PA, PP).
Thermosets - structural and corrosion resistant composites/FRP (glass
or carbon fibre reinforced epoxies, polyesters, phenolics, polyimides).