Electrically-conductive compositions and methods of using them with pipelines
US10968326B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2019 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/1054
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Minimum Federal Safety Standards for corrosion control on buried oil & gas pipelines stipulate that metallic pipes should be properly coated and have impressed-current cathodic protection (ICCP) systems in place to control the electrical potential field around a protected pipe. In certain examples described herein, electrically-conductive composites can be used and provide intrinsically-safe materials without the dielectric shielding issues of existing materials used with pipelines. As reacted by customary spray applications, the nanocomposite foams described herein are directly compatible with ICCP functionality wherever foam contacts the metallic pipe. Various compositions and their use with underground and/or above ground pipelines are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.