US 12,228,025 B2
Liquid recovery system
Shahrul Azman B Zainal Abidin, Kuala Lumpur (MY); Lukman B A Karim, Kuala Lumpur (MY); Roslan B Hamid, Kuala Lumpur (MY); Arfahsaadah Aripin, Kuala Lumpur (MY); Karthikeyan S, Kuala Lumpur (MY); and Zafirah M Ritzaudeen, Kuala Lumpur (MY)
Assigned to PETROLIAM NASIONAL BERHAD (PETRONAS), Kuala Lumpur (MY)
Appl. No. 17/782,837
Filed by PETROLIAM NASIONAL BERHAD (PETRONAS), Kuala Lumpur (MY)
PCT Filed Dec. 4, 2020, PCT No. PCT/MY2020/050194
§ 371(c)(1), (2) Date Jun. 6, 2022,
PCT Pub. No. WO2021/112664, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. PI 2019007271 (MY), filed on Dec. 6, 2019.
Prior Publication US 2023/0012234 A1, Jan. 12, 2023
Int. Cl. E21B 43/34 (2006.01); B01D 5/00 (2006.01); B01D 53/00 (2006.01); B01D 53/26 (2006.01); C10L 3/06 (2006.01); C10L 3/10 (2006.01); F25J 3/02 (2006.01); E21B 41/00 (2006.01)
CPC E21B 43/34 (2013.01) [B01D 5/0003 (2013.01); B01D 5/0087 (2013.01); B01D 5/009 (2013.01); B01D 5/0093 (2013.01); B01D 53/002 (2013.01); B01D 53/26 (2013.01); C10L 3/06 (2013.01); C10L 3/106 (2013.01); F25J 3/0214 (2013.01); C10L 2290/06 (2013.01); C10L 2290/08 (2013.01); C10L 2290/48 (2013.01); E21B 41/0071 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A system for recovering natural gas liquid from a source, comprising:
a heat exchanger for cooling wellstream fluid directed therethrough from a first inlet to a first outlet;
a first separator for receiving the fluid from the heat exchanger for separating liquid and gas;
in a first configuration, the gas from the first separator being directed to a turbo-expander for reducing the temperature and pressure of the gas to form a cold fluid;
the cold fluid being directed to a second separator for separating liquid and gas;
gas from the second separator being directed to the heat exchanger where it flows therethrough from a second inlet to a second outlet for cooling the fluid flowing between the first inlet and first outlet;
wherein if the turbo-expander is not operating, the first configuration may be a changed to a second configuration to bypass the turbo-expander and direct the gas from the second separator to a Joule-Thomson valve to form the cold fluid.