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03321 FIELD STUDY OF CORROSION INHIBITION AT VERY HIGH FLOW VELOCITY

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Product Number: 51300-03321-SG
ISBN: 03321 2003 CP
Author: Bert.F.M. Pots, Steve J. Paterson, Halimah B. Pit, Edwin L.J.A. Hendriksen, Han A.M. de Reus
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This paper covers the execution of a series of field tests at gas well locations in the Netherlands. The objectives were to determine to what flow velocity the gas production can be increased without jeopardizing the integrity of the surface facilities and to establish the optimum corrosion inhibitor injection rate. In one of the field tests, a 4-inch (0.1-m) test flow loop was constructed in a bypass downstream of a test manifold. The loop was equipped with a number of monitoring techniques including FSM (Field Signature Monitoring), ER (Electrical Resistance) probes, Electrochemical Noise, LPR (Linear Polarization Resistance), and AC impedance. The field tests demonstrated that CO2 corrosion can be mitigated by ensuring enough corrosion inhibitor is being injected, even at gas velocities as high as 50 m/s, which is well above a previously established rule of thumb indicating a velocity limit of 20 m/s. Keywords: corrosion inhibition, gas field, field trial, corrosion monitoring, corrosion prediction, flow velocity
This paper covers the execution of a series of field tests at gas well locations in the Netherlands. The objectives were to determine to what flow velocity the gas production can be increased without jeopardizing the integrity of the surface facilities and to establish the optimum corrosion inhibitor injection rate. In one of the field tests, a 4-inch (0.1-m) test flow loop was constructed in a bypass downstream of a test manifold. The loop was equipped with a number of monitoring techniques including FSM (Field Signature Monitoring), ER (Electrical Resistance) probes, Electrochemical Noise, LPR (Linear Polarization Resistance), and AC impedance. The field tests demonstrated that CO2 corrosion can be mitigated by ensuring enough corrosion inhibitor is being injected, even at gas velocities as high as 50 m/s, which is well above a previously established rule of thumb indicating a velocity limit of 20 m/s. Keywords: corrosion inhibition, gas field, field trial, corrosion monitoring, corrosion prediction, flow velocity
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