Back to results
US 2019/0194554 A1Published application
Simultaneous Crude Oil Dehydration, Desalting, Sweetening, and Stabilization
AssigneeSaudi Arabian Oil Company
InventorMohamed Soliman
Life of this patent
Estimating the term…
Abstract
Integrated gas oil separation plant systems and methods are disclosed. Systems and methods include treating a crude oil inlet feed stream with a high pressure production trap (HPPT), a low pressure production trap (LPPT), a low pressure degassing tank (LPDT), a first heat exchanger, a second heat exchanger, a LPPT recycle water stream, a fresh wash water supply stream, and a LPDT recycle water stream, where the LPDT recycle water stream is operable to supply recycle water from the LPDT to an output stream from the HPPT to form the LPPT inlet feed stream.
Claims19
An integrated gas oil separation plant system, the system comprising:
- a crude oil inlet feed stream, the crude oil inlet feed stream operable to convey sour and low pressure crude oil for processing in the system;
- a low pressure production trap (LPPT), where the LPPT is fluidly coupled to the crude oil inlet feed stream, and where the LPPT comprises an inlet mixing device operable to thoroughly mix an LPPT inlet feed stream, a plurality of insulated electrostatic electrodes, and a weir;
- a low pressure degassing tank (LPDT), where the LPDT is fluidly coupled to the LPPT, and where the LPDT comprises an inlet mixing device operable to thoroughly mix an LPDT inlet feed stream, a plurality of insulated electrostatic electrodes, and a weir, and a stripping gas stream inlet fluidly coupled with the LPDT, the stripping gas stream inlet operable to supply steam in addition to or alternative to a low concentration H2S stripping gas to the LPDT;
- an inline gas separator, where the inline gas separator is fluidly disposed in between the crude oil inlet feed stream and the LPPT, and is fluidly disposed between the crude oil inlet feed stream and the LPPT;
- a first heat exchanger, where the first heat exchanger is fluidly disposed between the inline gas separator and the LPPT and is fluidly coupled to both the inline gas separator and the LPPT, and where the first heat exchanger is operable to heat the LPPT inlet feed stream;
- a second heat exchanger, where the second heat exchanger is fluidly disposed between the LPPT and the LPDT and is fluidly coupled to both the LPPT and LPDT, and where the second heat exchanger is operable to heat the LPDT inlet feed stream;
- a LPDT recycle water stream, where the LPDT recycle water stream is operable to supply recycle water from the LPDT to the crude oil inlet feed stream to form the LPPT inlet feed stream;
- a desalter unit fluidly disposed between the LPDT and a cold stabilizer, where the desalter unit is operable to remove salt water from crude oil;
- a third heat exchanger, the third heat exchanger fluidly disposed between the LPDT and the desalter unit, where the third heat exchanger is operable to heat a crude oil output stream from the LPDT;
- and
- a fresh wash water supply stream, where the fresh wash water supply stream is operable to supply fresh water to the output stream of the LPDT to form a desalter inlet feed stream.
8 more elements
An integrated gas oil separation method, the method comprising the steps of:
- heating crude oil, the crude oil comprising sour and low pressure crude oil;
- separating, under low pressure, a low pressure off-gas and water from the crude oil, where separation is aided by electrostatic coalescence to produce partially dry crude oil;
- heating the partially dry crude oil separated from the water and low pressure off-gas;
- separating, under atmospheric pressure, an atmospheric pressure off-gas and water from the partially dry crude oil to produce further partially dry crude oil, where separation is aided by electrostatic coalescence;
- recycling the water separated, under atmospheric pressure, to mix with the crude oil before the step of separating, under low pressure;
- heating the further partially dry crude oil;
- mixing with the further partially dry crude oil fresh wash water;
- desalting the further partially dry crude oil to produce recycle salt water and desalted, dry crude oil;
- recycling the recycle salt water to mix with the partially dry crude oil before the step of separating, under atmospheric pressure;
- stabilizing the desalted, dry crude oil to remove volatile hydrocarbons from the crude oil;
- sweetening the desalted, dry crude oil to reduce H2S content in the desalted, dry crude oil;
- and
- producing a dehydrated, desalted, stable, and sweetened crude oil product safe for storage and transport.
10 more elements
Dependencies are inferred from the claim text.