18062171. METHODS FOR DECREASING CALCIUM SULFATE PRECIPITATION IN PRODUCED WATER simplified abstract (SAUDI ARABIAN OIL COMPANY)

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METHODS FOR DECREASING CALCIUM SULFATE PRECIPITATION IN PRODUCED WATER

Organization Name

SAUDI ARABIAN OIL COMPANY

Inventor(s)

Tao Chen of Dhahran (SA)

Qiwei Wang of Dhahran (SA)

METHODS FOR DECREASING CALCIUM SULFATE PRECIPITATION IN PRODUCED WATER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18062171 titled 'METHODS FOR DECREASING CALCIUM SULFATE PRECIPITATION IN PRODUCED WATER

Simplified Explanation

When combining produced water from different sources, precipitation or scaling can occur due to the presence of different ions. This patent application describes a method to treat produced water containing sulfate ions to prevent scaling when mixed with water containing calcium ions.

  • Treating produced water with a metal salt to form insoluble metal sulfate precipitate.
  • Separating the metal sulfate precipitate from the treated water.
  • Mixing the treated water with other produced water containing calcium ions to reduce the saturation ratio for calcium sulfate.

Key Features and Innovation

  • Treatment of produced water containing sulfate ions to prevent scaling.
  • Use of metal salts to form insoluble metal sulfate precipitate.
  • Mixing treated water with other water sources to reduce scaling potential.

Potential Applications

This technology can be applied in oil and gas production facilities where produced water is treated and reused to prevent scaling issues.

Problems Solved

Prevents precipitation and scaling in produced water when mixed with water from different sources.

Benefits

  • Reduces maintenance costs associated with scaling issues.
  • Improves the efficiency of water treatment processes in oil and gas production.

Commercial Applications

  • "Innovative Water Treatment Method to Prevent Scaling in Oil and Gas Production Facilities"
  • This technology can be licensed to oil and gas companies for use in their production facilities to improve water treatment processes and reduce scaling problems.

Prior Art

No prior art information available at this time.

Frequently Updated Research

No frequently updated research related to this technology at the moment.

Questions about Water Treatment Method to Prevent Scaling

Question 1

How does the metal salt treatment prevent scaling in produced water?

The metal salt treatment forms insoluble metal sulfate precipitate, reducing the potential for scaling when the treated water is mixed with water containing calcium ions.

Question 2

What are the potential cost savings associated with implementing this water treatment method in oil and gas production facilities?

Implementing this water treatment method can lead to cost savings by reducing maintenance and operational costs related to scaling issues in produced water systems.


Original Abstract Submitted

Precipitation or scaling may occur when combining produced water from multiple sources, such as when one produced water contains dissolved calcium ions and another produced water contains dissolved sulfate anions. The tendency toward precipitation or scaling may be decreased by treating the produced water containing dissolved sulfate anions. Such methods may comprise: providing a first produced water comprising dissolved sulfate anions; treating the first produced water with a metal salt capable of forming an insoluble metal sulfate, thereby forming a metal sulfate precipitate and a treated produced water; separating the metal sulfate precipitate from the treated produced water; and after separating the metal sulfate precipitate, mixing the treated produced water with at least one second produced water to obtain a mixed produced water, the at least one second produced water containing dissolved calcium ions, and the mixed produced water having a saturation ratio for calcium sulfate of less than 1.