Simultaneous crude oil dehydration, desalting, sweetening, and stabilization with compression
AssigneeSaudi Arabian Oil Company
InventorMohamed Soliman
Life of this patent
Estimating the term…
Abstract
Integrated gas oil separation plant systems and methods, one system including a crude oil inlet feed stream; a low pressure production trap (LPPT); a low pressure degassing tank (LPDT); a first heat exchanger, where the first heat exchanger is fluidly disposed between the LPPT and LPDT, and is fluidly coupled to both the LPPT and LPDT, and where the first heat exchanger is operable to heat the LPDT inlet feed stream with compressed gas removed from the crude oil inlet feed stream; a first inline gas mixer preceding the LPPT to directly mix compressed gas from the LPDT into the LPPT inlet feed stream; and a LPDT recycle water stream, where the LPDT recycle water stream is operable to supply recycle water from the LPDT to the LPPT inlet feed stream.
Claims7
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.
Dependencies are inferred from the claim text.