Patents by Inventor Siti Humairah Abd Rahman

Siti Humairah Abd Rahman 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).

  • Pumpable geopolymer cement
    Patent number: 11453815
    Abstract: This invention relates to an adaptable Geopolymer cement composition for application in oil and gas wells having a wide range of downhole temperatures. The base Geopolymer cement composition has an acceptable rheology of below 200 cP and can be tailored by the inclusion of various chemicals to control properties such as thickening time over a wide range of temperatures and densities. The disclosed Geopolymer cement composition is pumpable, mixable and stable. The composition can also be adapted to have expandable and swellable properties.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: September 27, 2022
    Assignee: PETROLIAM NASIONAL BERHAD
    Inventor: Siti Humairah Abd Rahman
  • PUMPABLE GEOPOLYMER CEMENT
    Publication number: 20210087457
    Abstract: This invention relates to an adaptable Geopolymer cement composition for application in oil and gas wells having a wide range of downhole temperatures. The base Geopolymer cement composition has an acceptable rheology of below 200 cP and can be tailored by the inclusion of various chemicals to control properties such as thickening time over a wide range of temperatures and densities. The disclosed Geopolymer cement composition is pumpable, mixable and stable. The composition can also be adapted to have expandable and swellable properties.
    Type: Application
    Filed: February 7, 2018
    Publication date: March 25, 2021
    Inventor: Siti Humairah ABD RAHMAN
  • Control of the properties of cement slurries of normal densities with optimized polymers combination
    Patent number: 8124569
    Abstract: The invention discloses a cement slurry composition for cementing a well comprising: an hydraulic cement, water and a combination made of a cellulosic polymer and an acrylamido-methyl-propane sulfonate co- or ter-polymer, wherein the density of said cement slurry is above 1700 kg/m3.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: February 28, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Tariq Mehmood Khan, Bernard Piot, Siti Humairah Abd Rahman
  • Control of the Properties of Cement Slurries of Normal Densities With Optimized Polymers Combination
    Publication number: 20100018708
    Abstract: The invention discloses a cement slurry composition for cementing a well comprising: an hydraulic cement, water and a combination made of a cellulosic polymer and an acrylamido-methyl-propane sulfonate co- or ter-polymer, wherein the density of said cement slurry is above 1700 kg/m3.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 28, 2010
    Inventors: Tariq Mehmood Khan, Bernard Piot, Siti Humairah Abd Rahman