Inhibitors, cladded trees protect sour gas wells in Abu Dhabi
- Abu Dhabi National Oil Co. (United Arab Emirates)
Continuous chemical inhibition has prevented corrosion downhole, and tests indicate that Inconel 625 cladding will protect the christmas trees on wells producing sour gas from the Thamama C reservoir. Metallic corrosion is a costly problem. Estimates indicate that corrosion costs the oil industry several billion dollars per year. In addition, oil companies spend over $100 million/year on corrosion inhibitors for combating downhole tubular and casing corrosion. Abu Dhabi National Oil Co. (Adnoc) has successfully completed wells in extremely harsh operating conditions with high temperatures, pressures, and high concentrations of H[sub 2]S, CO[sub 2], and brine. Such environments require special materials for downhole and surface equipment. The Thamama C reservoir, in an onshore gas field, produces gas containing H[sub 2]S and CO[sub 2] in the range of 0.7--8.0 mole % and 4.0--8.0 mole %, respectively. The Thamama C gas-gathering system comprises 19 wells connected to four trunk lines that transport produced gas and associated condensate to a central processing plant. The paper discusses material and inhibitor selection.
- OSTI ID:
- 7259684
- Journal Information:
- Oil and Gas Journal; (United States), Vol. 92:24; ISSN 0030-1388
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS DISTRIBUTION SYSTEMS
CORROSION PROTECTION
NATURAL GAS WELLS
UNITED ARAB EMIRATES
BRINES
CARBON DIOXIDE
CARBON STEELS
CHEMICAL COMPOSITION
CORROSION INHIBITORS
HYDROCHLORIC ACID
HYDROGEN SULFIDES
INCONEL 625
STAINLESS STEEL-410
ALLOY-NI61CR22MO9NB4FE3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
ARAB COUNTRIES
ASIA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM STEELS
CORROSION RESISTANT ALLOYS
CROLOY
ENERGY SYSTEMS
HALOGEN COMPOUNDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
INCONEL ALLOYS
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
MARTENSITIC STEELS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM AL
OXIDES
OXYGEN COMPOUNDS
STAINLESS STEELS
STEEL-CR13
STEELS
SULFIDES
SULFUR COMPOUNDS
WELLS
030300* - Natural Gas- Drilling
Production
& Processing
032000 - Natural Gas- Transport
Handling
& Storage