Patents by Inventor Magnus Legemah

Magnus Legemah 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: 10233385
    Abstract: A well servicing fluid includes ingredients including a GLDA salt, a crosslinker, and a viscosifying agent that is not crosslinked by the crosslinker. A well treatment method includes forming a well servicing fluid with ingredients including a GLDA salt, a viscosifying agent, and a crosslinker, the GLDA salt containing a metal cation chelated with a GLDA anion. The well servicing fluid is inserted into a well in a formation. The method includes crosslinking the viscosifying agent and attaining a first viscosity of the well servicing fluid using the crosslinker. After the attaining of the first viscosity, viscosity of the well servicing fluid in the well is decreased to a second viscosity less than the first viscosity by using the GLDA anion. The GLDA salt may be a GLDA calcium salt and the crosslinker may be a zirconium crosslinker.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 19, 2019
    Assignee: BJ Services, LLC
    Inventors: Leiming Li, Magnus Legemah, Jia Zhou, Xiaolan Wang, Ahmed Gomaa, Hong Sun
  • Publication number: 20170233642
    Abstract: A well treatment fluid includes an aqueous-based fluid, a crosslinked CMHEC polymer, and a crosslinker. The CMHEC polymer exhibits a DS of 0.2 to 0.6 and a MS of 2.0 to 2.5. The well treatment fluid exhibits a viscosity of at least about 100 cP. A well treatment method includes crosslinking a CMHEC polymer in an aqueous-based fluid at a pH of at least about 6. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP. A well is treated with the well treatment fluid at a temperature of at least about 200° F. Another well treatment method includes forming a well treatment fluid from produced water that has a TDS content of at least about 150,000 ppm. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: JIA ZHOU, MAGNUS LEGEMAH, HONG SUN, BRIAN B. BEALL, QI QU
  • Patent number: 9534167
    Abstract: Polyboronic compounds useful as delayed crosslinking agents may be produced by using a polyamine as base scaffold and incorporating boron via reaction with intermediate borates which may be formed in the condensation reaction between boric acid and a diol. A di-aldehyde, such as glyoxal, may be introduced following caustic treatment of the reaction mixture of polyaminoboronate to form the polyboronic compound.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: January 3, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Magnus Legemah, Hong Sun, Michael Guerin
  • Publication number: 20160376881
    Abstract: A well servicing fluid includes ingredients including a GLDA salt, a crosslinker, and a viscosifying agent that is not crosslinked by the crosslinker. A well treatment method includes forming a well servicing fluid with ingredients including a GLDA salt, a viscosifying agent, and a crosslinker, the GLDA salt containing a metal cation chelated with a GLDA anion. The well servicing fluid is inserted into a well in a formation. The method includes crosslinking the viscosifying agent and attaining a first viscosity of the well servicing fluid using the crosslinker. After the attaining of the first viscosity, viscosity of the well servicing fluid in the well is decreased to a second viscosity less than the first viscosity by using the GLDA anion. The GLDA salt may be a GLDA calcium salt and the crosslinker may be a zirconium crosslinker.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 29, 2016
    Inventors: Leiming Li, Magnus Legemah, Jia Zhou, Xiaolan Wang, Ahmed Gomaa, Hong Sun
  • Publication number: 20160347985
    Abstract: A fluid for temporarily plugging a hydrocarbon-bearing formation is disclosed. The fluid includes a carrier fluid and a crosslinked synthetic polymer, wherein the polymer comprises a labile group to degrade the polymer when exposed to a change in a condition of the fluid.
    Type: Application
    Filed: May 13, 2016
    Publication date: December 1, 2016
    Applicant: Baker Hughes Incorporated
    Inventors: Leiming Li, Jia Zhou, Hong Sun, Harold D. Brannon, Magnus Legemah
  • Publication number: 20160289548
    Abstract: A method includes forming a well treatment fluid by combining an aqueous fluid, a viscosifying agent, a crosslinker, and a rheology modifier containing an aldehyde. The viscosifying agent is crosslinked, increasing viscosity of the fluid. The method includes treating a well with the fluid exhibiting the increased viscosity, chemically changing the aldehyde after the crosslinking and thereby forming an acid, and decreasing viscosity of the crosslinked fluid as a result of forming the acid. The aldehyde may be glyoxal which forms oxalic acid, breaking a crosslink. A well treatment fluid is formulated with ingredients including an aqueous fluid and a viscosifying agent and a crosslinker configured to crosslink the viscosifying agent. The fluid includes a rheology modifier containing an aldehyde. The fluid may lack an aldehyde crosslinking delay additive.
    Type: Application
    Filed: June 9, 2016
    Publication date: October 6, 2016
    Inventors: Qi Qu, Leiming Li, Hong Sun, Magnus Legemah, Jia Zhou
  • Patent number: 9394476
    Abstract: A method includes forming a well treatment fluid by combining an aqueous fluid, a viscosifying agent, a crosslinker, and a rheology modifier containing an aldehyde. The viscosifying agent is crosslinked, increasing viscosity of the fluid. The method includes treating a well with the fluid exhibiting the increased viscosity, chemically changing the aldehyde after the crosslinking and thereby forming an acid, and decreasing viscosity of the crosslinked fluid as a result of forming the acid. The aldehyde may be glyoxal which forms oxalic acid, breaking a crosslink. A well treatment fluid is formulated with ingredients including an aqueous fluid and a viscosifying agent and a crosslinker configured to crosslink the viscosifying agent. The fluid includes a rheology modifier containing an aldehyde. The fluid may lack an aldehyde crosslinking delay additive.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: July 19, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Qi Qu, Leiming Li, Hong Sun, Magnus Legemah, Jia Zhou
  • Publication number: 20150330199
    Abstract: An injection process to treat sandstone or limestone subterranean formations using carboxylic acids, dicarboxylic acids and/or aminocarboxylic acids (e.g. glutamic acid N,N-diacetic acid (GLDA); methylglycine N,N-diacetic acid (MGDA); diethylene triamine pentaacetic acid (DTPA), etc.), further involves at least a two step injection process which may include, in one non-limiting embodiment, injecting a relatively higher concentration of organic acid to create wormholes accompanied by a relatively lower concentration of the same or different organic acid to enhance the permeability of the formation.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 19, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: MAGNUS LEGEMAH, AHMED M. GOMAA, QI QU, DEAN M. BILDEN, XIAOLAN WANG, JOEL L. BOLES, HONG SUN, JAMES B. CREWS, LEIMING LI
  • Publication number: 20150240149
    Abstract: A method includes forming a well treatment fluid by combining an aqueous fluid, a viscosifying agent, a crosslinker, and a rheology modifier containing an aldehyde. The viscosifying agent is crosslinked, increasing viscosity of the fluid. The method includes treating a well with the fluid exhibiting the increased viscosity, chemically changing the aldehyde after the crosslinking and thereby forming an acid, and decreasing viscosity of the crosslinked fluid as a result of forming the acid. The aldehyde may be glyoxal which forms oxalic acid, breaking a crosslink. A well treatment fluid is formulated with ingredients including an aqueous fluid and a viscosifying agent and a crosslinker configured to crosslink the viscosifying agent. The fluid includes a rheology modifier containing an aldehyde. The fluid may lack an aldehyde crosslinking delay additive.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 27, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: Qi Qu, Leiming Li, Hong Sun, Magnus Legemah, Jia Zhou