Patents by Inventor Nada Alghamdi

Nada Alghamdi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • REMOVAL OF SULFATE FROM SEAWATER
    Publication number: 20230331598
    Abstract: A method and system of providing seawater into a subterranean formation, including adding chloride salt having a metal cation to the seawater (having sulfate), precipitating sulfate salt (of the metal cation and sulfate), removing the sulfate salt as precipitated to give treated seawater having less sulfate than the seawater, and injecting the treated seawater into the subterranean formation.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 19, 2023
    Inventors: Qiwei Wang, Tao Chen, Yasser A. Al-Jeshi, Nada Alghamdi
  • DETERMINATION OF TOTAL CRUDE OIL IN WATER BY ABSORBANCE SPECTROPHOTOMETRY
    Publication number: 20230273120
    Abstract: A method for quantifying a crude oil in water is provided. The method includes selecting an ultraviolet/visible (UV/Vis) wavelength to perform a measurement, preparing calibration solutions in xylene, and preparing a calibration curve from the calibration solutions. A sample is prepared including extracting the crude oil from the water in a two-phase separation with xylene. An absorbance of the sample in the xylene is measured at the UV/Vis wavelength. A concentration of the crude oil in the water is calculated from the absorbance.
    Type: Application
    Filed: February 28, 2022
    Publication date: August 31, 2023
    Inventors: Mohammad Alharthy, Osama Alzahrani, Nada Alghamdi, NagoorPitchal MeeranPillai, Ali Almuhaimeed
  • Determination of total crude oil in water by absorbance spectrophotometry
    Patent number: 11726033
    Abstract: A method for quantifying a crude oil in water is provided. The method includes selecting an ultraviolet/visible (UV/Vis) wavelength to perform a measurement, preparing calibration solutions in xylene, and preparing a calibration curve from the calibration solutions. A sample is prepared including extracting the crude oil from the water in a two-phase separation with xylene. An absorbance of the sample in the xylene is measured at the UV/Vis wavelength. A concentration of the crude oil in the water is calculated from the absorbance.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: August 15, 2023
    Assignee: Saudi Arabian Oil Company
    Inventors: Mohammad Alharthy, Osama Alzahrani, Nada Alghamdi, NagoorPitchal MeeranPillai, Ali Almuhaimeed