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US 2024/0174930 A1Published application
Methods of water separation from crude oil
AssigneeSaudi Arabian Oil Company
InventorsMohamed Ahmed SOLIMAN, Azeb M. QAHTANI, Simone LESS, Ramsey WHITE
Life of this patent
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Abstract
A method may include producing a crude oil from a reservoir and contacting the crude oil with a demulsifying agent before the crude oil passes through a production choke valve to form a mixture of crude oil and demulsifying agent. The mixture of crude oil and demulsifying agent may be separated in one or more separators into a gas stream, an oil stream, and a water stream. The gas stream and oil stream may be combined to form an oil and gas mixture.
Claims19
A method comprising:
- producing a crude oil from a reservoir;
- before the crude oil passes through a production choke valve, contacting the crude oil with a demulsifying agent to form a mixture of crude oil and demulsifying agent;
- wherein the mixture of crude oil and demulsifying agent is at a pressure of about 400 psig to about 500 psig before the choke valve;
- separating the mixture of crude oil and demulsifying agent in a high-pressure vessel into a gas stream, an oil stream, and a water stream;
- and
- combining the gas stream and oil stream to form an oil and gas mixture.
3 more elements
(canceled)
A method comprising:
- producing a crude oil from a reservoir;
- before the crude oil passes through a production choke valve, contacting the crude oil with a demulsifying agent to form a mixture of crude oil and demulsifying agent;
- wherein the mixture of crude oil and demulsifying agent is at a pressure of about 400 psig to about 500 psig before the choke valve;
- separating the mixture of crude oil and demulsifying agent in a separation system into a gas stream, an oil stream, and a water stream, the separation system comprising a first separator and a second separator;
- and
- combining the gas stream with the oil stream to form an oil and gas mixture.
3 more elements
A method comprising:
- producing a crude oil from a reservoir;
- before the crude oil passes through a production choke valve, contacting the crude oil with a demulsifying agent to form a mixture of crude oil and demulsifying agent;
- wherein the mixture of crude oil and demulsifying agent is at a pressure of about 400 psig to about 500 psig before the choke valve;
- separating the mixture of crude oil and demulsifying agent in a gas-liquid cyclonic separator into a natural gas stream and an oil-water emulsion stream;
- separating the oil-water emulsion stream in an electrostatic coalescer to form a first two-phase liquid stream;
- separating the first two-phase liquid stream in a liquid-liquid separator into a first liquid crude stream and a second two-phase liquid stream;
- separating the second two-phase liquid stream in a hydrocyclone into a second liquid crude stream and a water stream;
- and
- combining the natural gas stream, the first liquid crude stream, and the second liquid crude stream to form an oil and gas mixture.
6 more elements
(canceled)
Dependencies are inferred from the claim text.