Patent ID: 11952542
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC C

Claim 0:
1. A method for integrated gas oil separation, the method comprising the steps of:
supplying a crude oil inlet feed stream;
removing from the crude oil inlet feed stream a high pressure crude oil off-gas stream for compression;
mixing the crude oil inlet feed stream with recycle water from a low pressure production trap (LPPT);
mixing the crude oil inlet feed stream with compressed high pressure gas from the LPPT;
initially separating the crude oil inlet feed stream in a high pressure production trap (HPPT) into a HPPT off-gas stream, the HPPT off-gas stream to be compressed with the high pressure crude oil off-gas stream, a HPPT partially-dried crude oil stream, and an oily-water stream for treatment;
mixing the HPPT partially-dried crude oil stream with recycle water from a low pressure production trap (LPDT) and with compressed atmospheric gas from the LPDT;
separating the HPPT partially-dried crude oil stream in the LPPT into a LPPT off-gas stream, the LPPT off-gas stream to be compressed for mixing with the crude oil inlet feed stream, an LPPT partially-dried crude oil stream, and an oily-water recycle stream;
heating the LPPT partially-dried crude oil stream with compressed gas from the high pressure crude oil off-gas stream and the HPPT off-gas stream;
removing from the LPPT partially-dried crude oil stream an atmospheric pressure off-gas stream; and
further separating the LPPT partially-dried crude oil stream in the LPDT to produce a LPDT off-gas stream, the LPDT off-gas stream to be compressed with the atmospheric pressure off-gas stream, a dried crude oil stream, and a recycle water stream for recycle to the LPPT.