Controlling top of the line corrosion in hydrocarbon pipelines
US8507034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2010 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Nov 10, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D7/222
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Processes and methods are provided for applying corrosion inhibitor within a foam matrix to the top of the line of wet gas pipelines. The environment within a hydrocarbon containing pipeline may include fluids that form strong acids in the gas space at the upper portion of the pipeline and can rapidly corrode a carbon steel pipeline. The solution provides a foam matrix created by a combination of foaming agent, foaming gas and corrosion inhibitor that are each selected to be compatible with each other and with the hydrocarbon mixture to form a stable foam matrix that treats the top of the line position for the length of the pipeline. A foam breaking agent at the end of the pipeline can be injected, if needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.