Fluid flow effects on CO[sub 2] corrosion resistance of oil well materials

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3316070· OSTI ID:6315768

Denpo, K; Ogawa, H ^[1]

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1. Nippon Steel Corp., Chiba (Japan). Steel Research Lab.

Effects of fluid flow on the corrosion resistance of oil well materials in environments containing CO[sub 2] were studied using two experimental techniques. One method utilized weight loss measurements and a large flow loop that could attain a maximum liquid flow rate of 20 m/s. The other utilized electrochemical measurements with rotating electrodes. The corrosion rate of carbon steel measured in the flow loop increased with the flow rate. But, the corrosion rate of 13 Cr martensitic stainless steel (UNS S42000) increased to 0.5 mm/y to become constant at the flow rate of 3 m/s. Corrosion rates were obtained from the electrochemical data using the Stern-Geary method, as a function of the speed of rotation. The results obtained by the two experimental methods were compared by hydrodynamic analysis. Using the similarity solutions obtained for mass transfer with pipe flow and the rotating electrode, the rotating velocity was converted to the equivalent velocity in the pipe. On that basis, the corrosion rate of the pipe was equal to the corrosion rate of the rotating electrode. The corrosion rate of the rotating electrode obtained by the electrochemical method was used to predict the corrosion rate of the pipe at the equivalent velocity. The predicted corrosion rate was in agreement with the measured corrosion rate.

• OSTI ID: 6315768
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 49:6; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBON STEELS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
ELECTROCHEMICAL CELLS
FLOW RATE
FLUID FLOW
FLUID MECHANICS
HIGH ALLOY STEELS
HYDRODYNAMICS
IRON ALLOYS
IRON BASE ALLOYS
MASS TRANSFER
MEASURING METHODS
MECHANICS
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PIPES
STAINLESS STEELS
STEELS
TURBULENT FLOW
WELLS