Natural Gas

Moisture, hydrocarbon dew-point, oxygen and hydrogen sulphide are all key parameters for the quality of natural gas.

Ensuring the Quality of Natural Gas to Meet International Standard

Natural gas extracted from underground sources is saturated with liquid water and heavier hydrocarbon components. Several stages of processing are needed to produce a clean, dry gas suitable for transmission through pipelines and end use. Our analyzers measure all the key quality parameters in natural gas to ensure compliance with international standards, protect pipelines and equipment and ensure safety.

Expertise in Products for Natural Gas with Global Support

We offer analyzers for continuous online monitoring, lightweight portable analyzers for spot checking or transmitters for direct installation where space or cost-efficient measurement are of importance. For specific needs or large projects, our experienced systems engineering department will work with you to create custom systems and packages.

Reliable Measurements of Critical Quality Parameters for Natural Gas

Discover a wide choice of instrumentation for measuring trace moisture, hydrocarbon dew-point, oxygen and hydrogen sulphide with global hazardous area certifications. All the Michell Instruments on-line process moisture analyzers featured here are suitable for use with natural gas containing up to 20% hydrogen with no further modification required.

Product Selector

Natural Gas Upstream

Application/Service Purpose of Measurement Measurement Measurement Gas/Background Gas Recommended Product
Onshore production wellhead or offshore platform
Avoid corrosion water and/or hydrates Parameter:Water dew-point or moisture
Range: 10-100 ppmV -30°C to -10°C dp at line pressure
Pressure: 40-70 barg
Natural Gas with Hydrocarbon Concentrates OptiPEAK TDL600
QMA601
Promet EExd/I.S.
Easidew Pro XP
ES70
Onshore/offshore reinjection into depleted oil/gas reservoir/Carbon capture
Avoid turbine compressor damage Parameter:Water dew-point or moisture
Range:10-100 ppmV -30°C to -10°C dp at line pressure
Pressure: 70 barg
Natural Gas with higher CO2 and H2S from amine process OptiPEAK TDL600
QMA601
Promet EExd/I.S.
Easidew Pro XP
ES70
Offshore Export Gas/Compression
Conform to seabed pipeline operation specification Parameter:Water dew-point or moisture
Range: 10-100 ppmV -30°C to -10 °C dp at line pressure
Pressure: 120-210 barg
Natural Gas with hydrocarbon condensates OptiPEAK TDL600
QMA601
Promet EExd/I.S.
Easidew Pro XP
ES70

Natural Gas Downstream

Application/Service Purpose of Measurement Measurement Measurement Gas/Background Gas Recommended Product
Biomethane injection to area grid network/Refrigeration + silica gel drying Conform to national grid gas quality specifications Parameter:Water dew point or moisture
Range: Typically alarm -5°C dew point at grid pressure, <200mg/std m3
Pressure: 5 - 10 barg
Sweetened biogas Easidew TX I.S.
Easidew PRO I.S.
ES70

Natural Gas Midstream

Application/Service Purpose of Measurement Measurement Measurement Gas/Background Gas Recommended Product
Central Processing plant or shore receiving terminal Conform to contractual gas quality specification Parameter:HCDP and WDP in °C. Moisture, Oxygen and H2S concentration
Range: HCDP: -25 to 0°C dp at cricondentherm (27 bar)
Wdp: -30 to -10°C Wdp at line pressure
Moisture content: 5 to 150ppmV
Oxygen: 1ppmV to 1%v
H2S: <1-25ppmV
Pressure:70 barg
Natural Gas Condumax II with WDP
Combo: condumax II + Optipeak TDL600 or Condumax II + QMA601
CDP301Minox-I
GPR-7500 and GPR-7100
GPR-18 Series
GPR-1500 Series
GPR-1800 Series
Transmission Pipeline/Metering custody transfer Conform to contractual gas quality specification Parameter:HCdp and Wdp in °C. Moisture, Oxygen and H2S concentration
Range: HCdp: -25 to 0 °C dp at cricondentherm (27 bar)
Wdp: -30 to -10 Wdp at line pressure
Moisture content: 5-150ppmV
Oxygen: 1ppmV to 1%v
H2S: <1 to 25ppmV
Pressure: 70 barg
Natural Gas Condumax II with WDP
Combo: condumax II + Optipeak TDL600 or Condumax II + QMA601
CDP301
Minox-I
GPR-7500 and GPR-7100
GPR-18 Series
GPR-1500 Series
GPR-1800 Series
Natural Gas Liquids extraction plant/Molecular Sieve Drying
Avoid ice formation causing damage withing turbo expander

<-80 ° C operating temperature
Parameter:Moisture in ppmV
Range: 0.01 to 5 ppmV, alarm 0.05 ppmV, <-80 degress Cdp at line pressure
Pressure:55 - 70 barg
Natural gas potentially entrained with hydrocarbon liquid QMA601
QMA601 with enhanced calibration
Promet EExd/I.S.
Easidew Pro XP
Liquid natural gas liquefaction plant/ Molecular sieve drying Avoid ice build-up within cryogenic heat exchanger, <-160 °C process temperature Parameter:Moisture in ppmVRange: 0.03 to 10 ppmV, alarm 0.1ppmV, <-70 ° Cdp at line pressure
Pressure: 55-70 barg
Natural Gas potential entrained with hydrocarbon liquid QMA601
QMA601 with enhanced calibration
Promet EExd/I.S.
Easidew Pro XP

Selected Moisture Measurement Applications in Natural Gas