Damage to subsea pipelines can cost operators millions of dollars in downtime, lost production and repairs. Common damage events such as dropped objects, anchor drag and trawler impacts can result in dents, cracks, pitting and gouges of pipeline material. Damage events compromise the integrity of pipelines and can have significant operational and financial consequences.
For pipeline owners and operators, efforts to mitigate or control internal corrosion generally fall into one or more of a handful of strategies. Moisture content control seeks to limit the amount of moisture (as measured in grains of water per million cubic feet of product, or by dew point) to eliminate the electrolyte for corrosion cells to develop.
PetroChina Pipeline Company’s R&D Center has developed software for the efficient and accurate calculation of high-consequence areas (HCAs) along a natural gas or petroleum liquids pipeline route.
This article looks at third-generation enhancements to electro-magnetic acoustic transducer (EMAT) inline inspection technology for dry gas pipelines. The enhancements have been derived from five years of operational experience by GE Oil & Gas-PII.
Recent developments in solid-state radiographic pipeline inspection equipment, primarily durable, mobile computers and solid-state image capturing devices, are raising the technique’s profile as a useful, capable way to find and assess corrosion.