Chevron U.s.a. Inc.

Kenneth W Sheets, Jr

John S Hartono

An apparatus for transferring a cryogenic fluid. The apparatus includes a conduit having an inlet and an outlet, a source of cryogenic fluid connected to the inlet for providing cryogenic fluid to the conduit and a cool down line connected to the conduit at an intermediate port between the inlet and the outlet, the cool down line in fluid communication with the source of cryogenic fluid for providing cryogenic fluid to the conduit through the intermediate port. The cool down line can be external and intersect with the conduit at the intermediate port, or may be disposed within the conduit. The conduit may have more than one intermediate port for providing cryogenic fluid to the conduit downstream from the inlet. Such an apparatus enables a conduit for transferring a cryogenic fluid to be pre-cooled to a cryogenic temperature more quickly so that transfer operations can begin.

Apparatus for transferring a cryogenic fluid

A method for loading LNG on a floating vessel through a conduit having the inlet, an outlet and an intermediate port located between the inlet and the outlet. The method includes the step of pumping a reduced flow of LNG into the inlet and the step of pumping a reduced flow of LNG into the intermediate port so that different sections of the conduit can be cooled simultaneously. When the conduit has cooled to a temperature suitable for transferring LNG, the method further includes pumping an increased flow of the LNG into the inlet of the conduit. The LNG can then be directed from the outlet to a storage tank onboard a floating vessel.

Method for loading LNG on a floating vessel

A method for transferring a cryogenic fluid from a floating vessel. The cryogenic fluids to be transferred can include liquefied hydrocarbon gases such as LNG. The method includes the steps of pumping a reduced flow of a cryogenic fluid into a first end and/or a second end of a conduit to begin pre-cooling the conduit. Pre-cooling also includes pumping a reduced flow of the cryogenic fluid into the conduit at a point intermediate the first end and the second end so that different sections of the conduit are cooled simultaneously. When the conduit has cooled to a temperature suitable for transferring the cryogenic fluid, an increased flow of the cryogenic fluid is pumped into the first end of the conduit to transfer the cryogenic fluid from the floating vessel. The cryogenic fluid can then be directed from the second end of the conduit to a storage tank on shore or onboard a second floating vessel.

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San Ramon, CA, United States of America

Kenneth W Sheets, Jr