Corrosion-induced leaks of carbon steel pipelines and gas-hydrate blockages are prime concerns in oil
and gas transportation. In addition to the safety and environmental matters, corrosion and hydrate
formation can have severe financial consequences to the operator. Pipeline integrity and flow
assurance are, therefore, of paramount importance. Chemical inhibitors to mitigate metal degradation
and to protect pipelines from gas-hydrate obstructions are commonly utilised, but compatible corrosion
inhibitor (CI) and kinetic hydrate inhibitor (KHI) formulations are often difficult to put together for wet
sour gas applications. Oftentimes, it is found that the presence of a KHI has an adverse effect on the
performance of the CI or vice versa. This paper presents data from a laboratory research programme
which resulted in the successful development of new corrosion inhibitor products exhibiting outstanding
compatibility with a kinetic hydrate inhibitor under simulated wet sour gas pipeline operating conditions.
Keywords: Corrosion, hydrates, inhibitors, compatible, sour gas, pipelines