Patents by Inventor Shadaab MAGHRABI

Shadaab MAGHRABI 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).

  • Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent
    Patent number: 9611417
    Abstract: An invert emulsion drilling fluid comprises: an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises a hygroscopic liquid; and a suspending agent, wherein the suspending agent is a polymer comprising urea linkages or urea and urethane linkages. The hygroscopic liquid comprises a salt and a suitable solvent or comprises an alcohol. The drilling fluid can exclude an organophilic clay or organophilic lignite. A method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into at least a portion of a subterranean formation.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: April 4, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vikrant Wagle, Shadaab Maghrabi
  • Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent
    Patent number: 9376608
    Abstract: According to an embodiment, an invert emulsion drilling fluid comprises: an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises a hygroscopic liquid; and a suspending agent, wherein the suspending agent is a polymer comprising urea linkages or urea and urethane linkages. According to certain embodiments, the hygroscopic liquid comprises a salt and a suitable solvent. According to other embodiments, the hygroscopic liquid comprises an alcohol. In certain embodiments, the drilling fluid does not contain an organophilic clay or organophilic lignite. According to another embodiment, a method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into at least a portion of a subterranean formation.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: June 28, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vikrant Wagle, Shadaab Maghrabi
  • INVERT EMULSION DRILLING FLUID CONTAINING A HYGROSCOPIC LIQUID AND A POLYMERIC SUSPENDING AGENT
    Publication number: 20140349895
    Abstract: An invert emulsion drilling fluid comprises: an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises a hygroscopic liquid; and a suspending agent, wherein the suspending agent is a polymer comprising urea linkages or urea and urethane linkages. The hygroscopic liquid comprises a salt and a suitable solvent or comprises an alcohol. The drilling fluid can exclude an organophilic clay or organophilic lignite. A method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into at least a portion of a subterranean formation.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Inventors: Vikrant WAGLE, Shadaab MAGHRABI