COASTAL LIQUEFACTION

WIPO Patent Application WO/2015/110443

A3

A method for production of liquefied natural gas (LNG) from a natural gas source, the method comprising introduction of the natural gas into a gas terminal where the gas is pre-treated, where the pre-treated natural gas is led via subsea pipelines to floating liquid natural gas production units (FLNG) offshore, each comprising one or more LNG production unit(s) where the natural gas is liquefied to give LNG and where the LNG is transferred to LNG tankers for transport to markets, wherein the pre-treatment of the gas before transfer to the FLNG comprises separation of liquefied Petroleum Gas (LPG) from the natural gas to give a LNG ready natural gas comprising > 85 % by volume methane, and < 100 ppm C5+ hydrocarbons, where LNG ready natural gas is compressed to a pressure of 140 bar or more in the gas terminal, where the gas is transported in subsea pipelines to the FLNG at this high pressure, and where the pressure of the natural gas is reduced to a working pressure for LNG liquefaction onboard the FLNG, before the LNG ready natural gas is introduced into the LNG production unit(s) for liquefaction, and where the LNG ready natural gas is cooled in a heat exchanger against a heat medium, is described. A system for LNG production using the present method is also described.

CHRISTENSEN TOR (NO)
ECKBO PÅL LEO (US)

PCT/EP2015/051058

October 22, 2015

January 21, 2015

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GLOBAL LNG SERVICES LTD
CHRISTENSEN TOR (NO)
ECKBO PÅL LEO (US)

F25J1/02; F25J1/00

WO1996017777A1

1996-06-13

EP0394187A2	1990-10-24
US20030226373A1	2003-12-11

PROTECTOR IP CONSULTANTS AS (Oslo, NO)

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