US 12,077,718 B2
Gas oil separation plant systems and methods with reduced heating demand
Mohamed Soliman, Juaymah (SA); Samusideen Adewale Salu, Juaymah (SA); Talal Al-Zahrani, Juaymah (SA); and Nisar Ahmad Ansari, Tanajib (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jul. 5, 2023, as Appl. No. 18/347,178.
Application 18/347,178 is a division of application No. 17/329,993, filed on May 25, 2021, granted, now 11,732,198.
Prior Publication US 2023/0348793 A1, Nov. 2, 2023
Int. Cl. B01D 19/00 (2006.01); B01D 17/02 (2006.01); B01D 17/06 (2006.01); C10G 7/02 (2006.01); C10G 7/04 (2006.01); C10G 31/06 (2006.01)
CPC C10G 7/02 (2013.01) [B01D 17/0214 (2013.01); B01D 17/06 (2013.01); B01D 19/0005 (2013.01); B01D 19/0068 (2013.01); C10G 7/04 (2013.01); C10G 31/06 (2013.01); C10G 2300/1033 (2013.01); C10G 2300/208 (2013.01); C10G 2300/4012 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An integrated gas oil separation method, the method comprising the steps of:
separating crude oil in a high pressure separator into a high pressure crude oil off-gas and a high pressure partially degassed crude oil output, where the high pressure crude oil off-gas is in a pressure range from about 135 psig to about 500 psig;
compressing the high pressure crude oil off-gas in a high pressure compressor;
introducing the high pressure partially degassed crude oil output to a low pressure separator;
separating the high pressure partially degassed crude oil in the low pressure separator into a low pressure crude oil off-gas and a low pressure partially degassed crude oil output, where the low pressure crude oil off-gas is in a pressure range from about 35 psig to about 180 psig;
compressing the low pressure crude oil off-gas to produce a compressed low pressure crude oil off-gas;
separating the low pressure partially degassed crude oil output in an atmospheric separator into an atmospheric crude oil off-gas and an atmospheric partially degassed crude oil output, where the atmospheric crude oil off-gas is in the range of about 3 psig to about 80 psig;
compressing the atmospheric crude oil off-gas to produce a compressed atmospheric crude oil off-gas;
injecting the compressed atmospheric crude oil off-gas directly into the crude oil before the low pressure separator;
desalting the atmospheric partially degassed crude oil output in a desalting vessel generating a desalted partially degassed crude oil output;
stabilizing the desalted partially degassed crude oil output in a crude stabilizer column to produce a crude oil product and a crude stabilizer column recycle stream comprising crude oil;
applying the compressed low pressure crude oil off-gas for indirect heating of the crude oil in the crude stabilizer column recycle stream through a first reboiler; and
applying the high pressure crude oil off-gas for indirect heating of the crude oil in the crude stabilizer column recycle stream through a second reboiler.