US 12,656,058 B2Granted

Liquefied natural gas production facility on gravity-based structures

AssigneePublichnoe Aktsionernoe Obshchestvo "NOVATEK"

InventorsLeonid Viktorovich Mikhelson, Valeriy Nikolaevich Retivov, Sergey Gennadyevich Solovyev

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Abstract

A liquefied natural gas (LNG) production facility includes gravity-based structures (GBSs) with process lines for liquefying natural gas. A GBS contains: tanks for each component of a mixed refrigerant, wherein a GBS process line includes a fractionating apparatus for mixed refrigerant component production from a broad fraction of light hydrocarbons; a stabilized gas condensate (SGC) storage tank; and a berth for offloading LNG and SGC into tankers. Each GBS contains an LNG storage tank. One tank per mixed refrigerant component from each GBS is connected by pipe to systems for preparing and compressing all process line refrigerants, thus forming a common component feed system. The SGC storage tank is connected by pipes to condensate-stabilizing apparatus for all process lines, thus forming a common system for storing and offloading SGC. The LNG storage tanks are interconnected by pipes, forming a common system for storing and offloading LNG.

Claims10

Dependent claims

A liquefied natural gas (LNG) production complex comprising at least two gravity-based structures (GBS), each accommodating a natural gas liquefaction production line using a mixed refrigerant, including raw gas reception and treatment installations, a gas condensate stabilization installation, gas dehydration and mercury removal installations, a wide fraction of light hydrocarbons (WFLH) extraction installation, a refrigerant treatment and compression system, and a liquefaction installation,

with at least one GBS production line incorporating a fractionation installation to generate mixed refrigerant components from WFLH,
with at least one respective GBS having at least one storage tank for each mixed refrigerant component,
with each GBS having at least one LNG storage tank,
with at least one GBS having at least one stable gas condensate (SGC) storage tank,
with at least one GBS having a jetty for LNG and SGC offloading,
wherein
at least one of each tank for each mixed refrigerant component has pipeline connections to the refrigerant treatment and compressions systems of each production line to form a single mixed refrigerant components replenishment system,
at least one SGC storage tank has a pipeline connection to condensate stabilization installations of each production line to form a single SGC storage and offloading system, and
the LNG storage tanks have a pipeline interconnection to form a single LNG storage and offloading system.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/851,826Filed 9 Nov 2022
Priority: RU RU202211659520 Jun 2022
Published: US 2025/0198696 A119 Jun 2025
Granted: 16 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F25J 1/0269
Construction and layout of liquefaction equipments, e.g. valves, machines: arrangement of liquefaction units or equipments fulfilling the same…
F25J 1/0022
Characterised by the fluid to be liquefied: hydrocarbons, e.g. natural gas
F25J 1/0052
Using an "external" refrigerant stream in a closed vapor compression cycle: by vaporising a liquid refrigerant stream
F25J 1/0055
By vaporising a liquid refrigerant stream: originating from an incorporated cascade