Natural gas or CO2 injection into geothermal injection well
Looking for a cost effective solution to reinject a low pressure natural gas OR a low pressure CO2 stream into a geothermal injection well.
Origin of the gas: Accompanied natural gas from a geothermal process (untreated).
Gas production rate: 100-400 normal meter cubes (Nm3) per hour.
Gas content:
- 85% methane
- 5% CO2
- 3% C2 (ethane)
- 3% N2
- 4% C3 – C11+
Origin of the CO2: Accompanied natural gas from a geothermal process that is used in a combined heat and power unit (gas engine) resulting in flue gas. Input of natural gas into the CHP unit is ranging from 100-400 normal meter cubes (Nm3) per hour.
Geothermal production well details:
- Surface wellhead pressure ~5-10Bar
- Flowrate of geothermal water: 100-400m3/h
- Gas production rate: 100-400m3/h (gas water ratio is 1Nm3/m3)
Geothermal injection well details:
- 2000mTVD injection reservoir
- Surface injection pressure ~15Bar
- Flowrate of geothermal water: 100-400m3/h
- Composition of geothermal water:
Calcium (Ca) μg/l 3,900,000
Chloride (as Cl) μg /l 81,000,000
Magnesium (Mg) μg/l 1,000,000
Potassium (K) μg/l 970,000
Sodium (Na) μg/l 34,000,000
Strontium (Sr) μg/l 250,000
Sulphate (as SO4) μg /l 95,000
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