Patents by Inventor Ahmed S. Zakaria

Ahmed S. Zakaria 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).

  • Use of controlled release acid system in treatment of wells
    Patent number: 11661545
    Abstract: Release of hydrochloric acid, hydrofluoric acid and fluoroboric acid into a well may be controlled by introducing into the well an aqueous fluid containing ammonium chloride, ammonium bifluoride, ammonium fluoroborate, ammonium tetrafluoroborate or a mixture thereof and a breaker. After being introduced into the well, the ammonium salt reacts with the breaker and the acid is released into the well.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: May 30, 2023
    Assignee: Baker Hughes Oilfield Operations LLC
    Inventor: Ahmed S Zakaria
  • Controlled Release Acid System for Well Treatment Applications
    Publication number: 20220389305
    Abstract: Release of hydrochloric acid, hydrofluoric acid and fluoroboric acid into a well may be controlled by introducing into the well an aqueous fluid containing ammonium chloride, ammonium bifluoride, ammonium fluoroborate, ammonium tetrafluoroborate or a mixture thereof and a breaker. After being introduced into the well, the ammonium salt reacts with the breaker and the acid is released into the well.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 8, 2022
    Inventor: Ahmed S. Zakaria
  • Aqueous delayed acid system for well stimulation
    Patent number: 11390799
    Abstract: The disclosure relates to an aqueous acidizing fluid. In addition to an acid, the fluid contains an organophosphorus surfactant and/or an acid retarder. The organophosphorus surfactant may be an amino phosphonate or a phosphino carboxylate. The acid retarder comprises the combination of urea or a urea derivative and a bifunctional organic compound. Suitable bifunctional organic compounds contain at least one quaternary ammonium or phosphonium and at least one alcohol as well as salts of nitrogen containing heterocyclic rings.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: July 19, 2022
    Assignee: Baker Hughes Holdings LLC
    Inventors: Ahmed S. Zakaria, Sumit Bhaduri, Frances H. DeBenedictis, Paul S. Carman
  • Aqueous Delayed Acid System for Well Stimulation
    Publication number: 20200399530
    Abstract: The disclosure relates to an aqueous acidizing fluid. In addition to an acid, the fluid contains an organophosphorus surfactant and/or an acid retarder. The organophosphorus surfactant may be an amino phosphonate or a phosphino carboxylate. The acid retarder comprises the combination of urea or a urea derivative and a bifunctional organic compound. Suitable bifunctional organic compounds contain at least one quaternary ammonium or phosphonium and at least one alcohol as well as salts of nitrogen containing heterocyclic rings.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 24, 2020
    Inventors: Ahmed S. Zakaria, Sumit Bhaduri, Frances H. DeBenedictis, Paul S. Carman
  • Well treatment
    Patent number: 10480314
    Abstract: In one aspect, methods may include quantifying a pore-scale heterogeneity of a porous medium; determining an adjusted pore volume to breakthrough based on the pore scale heterogeneity determined; and designing a stimulating fluid treatment for the porous medium. Other aspects may include the development of a wellbore stimulation methodology that allows stimulation fluid breakthrough curves of differing formation samples to be plotted as a single curve that accounts for the varied pore structure of the respective samples.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: November 19, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Murtaza Ziauddin, Ahmed S. Zakaria, Hisham Nasr-El-Din
  • WELL TREATMENT
    Publication number: 20160076369
    Abstract: In one aspect, methods may include quantifying a pore-scale heterogeneity of a porous medium; determining an adjusted pore volume to breakthrough based on the pore scale heterogeneity determined; and designing a stimulating fluid treatment for the porous medium. Other aspects may include the development of a wellbore stimulation methodology that allows stimulation fluid breakthrough curves of differing formation samples to be plotted as a single curve that accounts for the varied pore structure of the respective samples.
    Type: Application
    Filed: July 28, 2014
    Publication date: March 17, 2016
    Inventors: Murtaza Ziauddin, Ahmed S. Zakaria, Hisham Nasr-El-Din