公开(公告)号：US11808411B2

公开(公告)日：2023-11-07

申请号：US16917038

申请日：2020-06-30

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Donghwan Lee ,  Sathish Balasubramanian

IPC: F17C7/00 ,  F17C7/04 ,  F04B15/08 ,  F17C6/00 ,  B63B25/16 ,  B63B25/08

CPC classification number: F17C7/04 ,  F04B15/08 ,  F17C6/00 ,  B63B25/16 ,  B63B2025/087 ,  F17C2223/0161

Abstract: An apparatus and method of storing and transporting, in a dual-use cryogenic storage tank, a cryogenic liquid having a liquefaction temperature. A first pump empties the tank of a first portion of the cryogenic liquid, thereby leaving a second portion of the cryogenic liquid in the cryogenic storage tank. A second portion of the cryogenic liquid is focused at a location on a bottom of the cryogenic storage tank. Using a second pump located at the location, the cryogenic storage tank is emptied of the second portion of the cryogenic liquid, whereby a residual portion of the cryogenic liquid is left therein. Using a focused heating structure, heat may be delivered to the location to raise the temperature of the residual portion above the liquefaction temperature, thereby vaporizing all of the residual portion.

公开(公告)号：US12240566B2

公开(公告)日：2025-03-04

申请号：US17658114

申请日：2022-04-06

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Sai Mohan Majhi ,  Patrick C. Wong ,  Gary L. Hurst ,  Donghwan Lee

IPC: B63B22/02 ,  B63B21/50 ,  B63B35/44 ,  E21B43/01

Abstract: A modular floating platform system includes a detachable floating buoy providing a body tethered to a seafloor with a plurality of mooring lines and coupled to a subsea production system via one or more communication lines, and a plurality of floating surface facilities, each floating surface facility providing a standardized bottom interface matable with the detachable floating buoy. A latching mechanism individually couples each floating surface facility to the detachable floating buoy when each floating surface facility is individually mated to the detachable floating buoy. One or more communication couplings place each floating surface facility in communication with the subsea production system via the one or more communication lines when each floating surface facility is individually mated to the detachable floating buoy.