Patents by Inventor Mohamed Ahmed Nasr-El-Din Mahmoud

Mohamed Ahmed Nasr-El-Din Mahmoud 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).

  • Patent number: 10301534
    Abstract: The present invention relates to a process for treating a sandstone formation comprising introducing a fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) and having a pH of between 1 and 14 into the formation. The invention in addition relates to a fluid suitable for use in the above process containing 5-30 wt % of glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA), a corrosion inhibitor, a surfactant, and a mutual solvent.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 28, 2019
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Cornelia Adriana de Wolf, Mohamed Ahmed Nasr-El-Din Mahmoud, Hisham Nasr-El-Din
  • Patent number: 10301524
    Abstract: A drilling fluid composition comprising an aqueous base fluid, a viscosifier, and a H2S scavenger comprising copper nitrate, wherein the drilling fluid composition has a H2S sorption capacity from about 4.0 to about 6.0 gram per one milliliter of the drilling fluid composition; and a method of drilling a subterranean geological formation using thereof are provided. Various embodiments of the drilling fluid composition and the method are also provided.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: May 28, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Salah El-Din Elkatatny, Reyad Awwad Shawabkeh, Mohamed Ahmed Nasr El-Din Mahmoud
  • Patent number: 10294412
    Abstract: The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 21, 2019
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Cornelia Adriana de Wolf, Hisham Nasr-El-Din, James N. LePage, Mohamed Ahmed Nasr-El-Din Mahmoud, Johanna Hendrika Bemelaar
  • Publication number: 20190100684
    Abstract: A drilling fluid composition comprising an aqueous base fluid, a viscosifier, and a H2S scavenger comprising copper nitrate, wherein the drilling fluid composition has a H2S sorption capacity from about 4.0 to about 6.0 gram per one milliliter of the drilling fluid composition; and a method of drilling a subterranean geological formation using thereof are provided. Various embodiments of the drilling fluid composition and the method are also provided.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 4, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Salah El-Din Elkatatny, Reyad Awwad Shawabkeh, Mohamed Ahmed Nasr El-Din Mahmoud
  • Publication number: 20190055463
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Application
    Filed: September 14, 2018
    Publication date: February 21, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohamed Ahmed Nasr El-Din MAHMOUD, Salah El-Din ELKATATNY, Marwan Nagm Eldeen MOHAMMAD
  • Publication number: 20190016945
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 17, 2019
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, Salah El-Din ELKATATNY, Marwan Nagm Eldeen MOHAMMAD
  • Patent number: 10125308
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: November 13, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, Salah El-Din Elkatatny, Marwan Nagm Eldeen Mohammad
  • Publication number: 20180320061
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohamed Ahmed Nasr El-Din MAHMOUD, Salah El-Din ELKATATNY, Marwan Nagm Eldeen MOHAMMAD
  • Publication number: 20180320062
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohamed Ahmed Nasr El-Din MAHMOUD, Salah El-Din ELKATATNY, Marwan Nagm Eldeen MOHAMMAD
  • Patent number: 10119066
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: November 6, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, Salah El-Din Elkatatny, Marwan Nagm Eldeen Mohammad
  • Patent number: 10047278
    Abstract: A fracturing fluid composition that includes a chelating agent, e.g. GLDA, and a polymeric additive comprising a copolymer of acrylamido-tert-butyl sulfonate and hydrolyzed polyacrylamide diluted in an aqueous base fluid, e.g. seawater, and a method of fracking a geological formation using the fracturing fluid composition. Various embodiments of the fracturing fluid composition and the method of fracking are also provided.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 14, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, Salah El-Din Elkatatny, Marwan Nagm Eldeen Mohammad
  • Patent number: 9587171
    Abstract: The present invention relates to a process for treating a subterranean formation wherein a fluid containing an ammonium salt of glutamic acid N,N-diacetic acid (GLDA) or methylglycine N,N-diacetic acid (MGDA) is introduced into the formation.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 7, 2017
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Cornelia Adriana De Wolf, James N. Lepage, Hisham Nasr-El-Din, Mohamed Ahmed Nasr-El-Din Mahmoud, Edwin Rudolf Antony Bang, Noble Thekkemelathethil George
  • Patent number: 9453401
    Abstract: The chelating fluid for enhanced oil recovery in carbonate reservoirs and the method of using the same utilizes a chelating fluid injected into a carbonate oil reservoir through a fluid injection system. The chelating fluid is a solution of a polyamino carboxylic acid chelating agent in brine, with the polyamino carboxylic acid chelating agent having a concentration of approximately 5.0 wt % of the solution, with the solution having a pH of approximately 11.0. The polyamino carboxylic acid chelating agent is preferably ethylenediaminetetraacetic acid (EDTA). The brine preferably has a relatively high salinity, with a sodium chloride concentration preferably on the order of approximately 18,300 ppm.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 27, 2016
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, Khaled Zidan Abdelgawad, Abdullah Saad Sultan, Hasan Salman Al-Hashim
  • Publication number: 20150361330
    Abstract: The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.
    Type: Application
    Filed: August 21, 2015
    Publication date: December 17, 2015
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Cornelia Adriana de Wolf, Hisham Nasr-El-Din, James N. LePage, Mohamed Ahmed Nasr-El-Din Mahmoud, Johanna Hendrika Bemelaar
  • Patent number: 9150780
    Abstract: The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: October 6, 2015
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Cornelia Adriana de Wolf, Hisham Nasr-El-Din, James N. LePage, Mohamed Ahmed Nasr-El-Din Mahmoud, Johanna Hendrika Bemelaar
  • Publication number: 20150000916
    Abstract: The enhanced oil recovery using seawater and EDTA (ethylenediaminetetraacetic acid) is a method that uses injection of EDTA in seawater to enhance the recovery of oil from sandstone reservoirs. The EDTA may be introduced into seawater during the initial extraction of oil from the reservoir by seawater injection, or a solution of EDTA in seawater may be used to flush residual oil from the reservoir after the initial extraction by seawater injection. In either case, the EDTA is present in about 1.0 wt % to about 5.0 wt % of the seawater solution, and the solution has a pH of between 10.5 and 11.0.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: Mohamed Ahmed Nasr El-Din Mahmoud, HASAN SALMAN AL-HASHIM, ABDULLAH SAAD SULTAN, MOHAMMED ATTIA GADALLAH
  • Publication number: 20150000919
    Abstract: The chelating fluid for enhanced oil recovery in carbonate reservoirs and the method of using the same utilizes a chelating fluid injected into a carbonate oil reservoir through a fluid injection system. The chelating fluid is a solution of a polyamino carboxylic acid chelating agent in brine, with the polyamino carboxylic acid chelating agent having a concentration of approximately 5.0 wt % of the solution, with the solution having a pH of approximately 11.0. The polyamino carboxylic acid chelating agent is preferably ethylenediaminetetraacetic acid (EDTA). The brine preferably has a relatively high salinity, with a sodium chloride concentration preferably on the order of approximately 18,300 ppm.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: MOHAMED AHMED NASR EL-DIN MAHMOUD, KHALED ZIDAN ABDELGAWAD, ABDULLAH SAAD SULTAN, HASAN SALMAN AL-HASHIM
  • Publication number: 20140345868
    Abstract: The method of maintaining oil reservoir pressure involves injecting seawater having a concentration of about 1 wt % of a polyamino carboxylic acid or salt thereof as a chelating agent into the water zone of an oil reservoir, which reduces the formation of scale, thereby maintaining oil reservoir pressure. The polyamino carboxylic acid may be ethylenediaminetetraacetic acid (EDTA), acid (HEDTA), or hydroxyethyliminodiacetic acid (HEIDA). When used in larger concentrations, e.g., between 5 to 10 wt %, flooding the core with seawater containing the polyamino carboxylic acids not only prevents scale formation, but also improves core permeability. Instead of seawater, low salinity water may be used for the latter purpose.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: MOHAMED AHMED NASR EL-DIN MAHMOUD, MOHAMMED ATTIA GADALLAH
  • Publication number: 20140338903
    Abstract: The method for enhanced oil recovery by in situ carbon dioxide generation utilizes a chelating fluid injected into an oil reservoir through a fluid injection system. The chelating fluid is a low pH solution of a polyamino carboxylic acid chelating agent. The polyamino carboxylic acid chelating agent may have a concentration of about 5 wt %. The polyamino carboxylic acid chelating agent is preferably either an aqueous solution of H2Na2-ethylenediaminetetraacetic acid (pH 4.5), H3-hydroxyethyl ethylenediamine triacetic acid (pH 2.5), or an aqueous solution of H2NaHEDTA (pH 4). The injection of the chelating fluid may be preceded by flooding the core with seawater, and is followed by injection of either to seawater, a high pH chelating agent, or low salinity water to ensure maximal extraction of oil from the reservoir. The method is particularly for use in formations where the core of the reservoir has a carbonate rock matrix.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 20, 2014
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: MOHAMED AHMED NASR EL-DIN MAHMOUD, ABDULLAH SAAD SULTAN, KHALED ZIDAN ABDELGAWAD
  • Publication number: 20140124205
    Abstract: The present invention relates to a process for fracturing a subterranean formation comprising a step of fracturing the formation and a step of introducing a treatment fluid containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA), methylglycine N,N-diacetic acid or a salt thereof (MGDA) and/or N-hydroxyethyl ethylenediamine N,N?,N?-triacetic acid or a salt thereof (HEDTA) into the formation, wherein the fracturing step can take place before introducing the treatment fluid into the formation, while introducing the treatment fluid into the formation or subsequent to introducing the treatment fluid into the formation.
    Type: Application
    Filed: June 11, 2012
    Publication date: May 8, 2014
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Hisham Nasr-El-Din, Mohamed Ahmed Nasr-El-Din Mahmoud, Cornelia Adriana De Wolf, Jia He