Method and system for offshore production of liquefied natural gas
US6003603A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and a system for offshore production of liquefied natural gas, wherein natural gas is supplied from an underground source to a field installation for gas treatment. The gas is transferred in compressed form from the field installation to an LNG tanker. The transfer takes place via a pipeline surrounded by sea water. The compressed gas is supplied to a conversion plant which is provided on the LNG tanker and is arranged to convert at least a part of the gas to liquefied form, and the liquified gas is transferred to storage tanks on board the tanker. When the storage tanks on the LNG tanker are filled up, the pipeline is disconnected from the LNG tanker and connected to another, similar tanker. The pipeline is permanently connected to a submerged buoy which is arranged for introduction and releasable securement in a submerged downwardly open receiving space in the tanker, and which is provided with a swivel unit for transfer of gas under a high pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.