Patents by Inventor Marc N. Lehmann
Marc N. Lehmann 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).
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Patent number: 10604714Abstract: The lifetime of artificial lift systems, such as progressing cavity pumps (PCPs), used to transport aqueous slurries which contain fine particles, e.g. coal fines, may be prolonged by incorporation of at least one dispersant in the slurries. The dispersants act to inhibit or prevent the fine particles from agglomerating to plug the artificial lift intake and/or inhibit or prevent the agglomerated coal fines settling above the artificial lift system. The dispersant may also improve the lubricity of the slurry.Type: GrantFiled: November 13, 2017Date of Patent: March 31, 2020Assignee: Baker Hughes, a GE company, LLCInventors: Marc N. Lehmann, Robert C. Hicks, Alison R. Morris, Cheryl L. Licari
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Patent number: 10392903Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: GrantFiled: July 6, 2018Date of Patent: August 27, 2019Assignee: Baker Hughes, a GE company, LLCInventors: Howard James Spencer, Ravinder Virdee, Michael P. Squicciarini, Gordon T. Rivers, Marc N. Lehmann
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Publication number: 20180313191Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: ApplicationFiled: July 6, 2018Publication date: November 1, 2018Applicant: Baker Hughes, a GE company, LLCInventors: Howard James Spencer, Ravinder Virdee, Michael P. Squicciarini, Gordon T. Rivers, Marc N. Lehmann
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Patent number: 10018017Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: GrantFiled: July 17, 2015Date of Patent: July 10, 2018Assignee: Baker Hughes, a GE company, LLCInventors: Howard James Spencer, Ravinder Virdee, Michael P. Squicciarini, Gordon T. Rivers, Marc N. Lehmann
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Publication number: 20180066198Abstract: The lifetime of artificial lift systems, such as progressing cavity pumps (PCPs), used to transport aqueous slurries which contain fine particles, e.g. coal fines, may be prolonged by incorporation of at least one dispersant in the slurries. The dispersants act to inhibit or prevent the fine particles from agglomerating to plug the artificial lift intake and/or inhibit or prevent the agglomerated coal fines settling above the artificial lift system. The dispersant may also improve the lubricity of the slurry.Type: ApplicationFiled: November 13, 2017Publication date: March 8, 2018Applicant: Baker Hughes, a GE company, LLCInventors: Marc N. Lehmann, Robert C. Hicks, Alison R. Morris, Cheryl L. Licari
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Patent number: 9828560Abstract: The lifetime of artificial lift systems, such as progressing cavity pumps (PCPs), used to transport aqueous slurries which contain fine particles, e.g. coal fines, may be prolonged by incorporation of at least one dispersant in the slurries. The dispersants act to inhibit or prevent the fine particles from agglomerating to plug the artificial lift intake and/or inhibit or prevent the agglomerated coal fines settling above the artificial lift system. The dispersant may also improve the lubricity of the slurry.Type: GrantFiled: December 2, 2014Date of Patent: November 28, 2017Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Marc N. Lehmann, Robert C. Hicks, Alison R. Morris, Cheryl L. Licari
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Publication number: 20170158944Abstract: Saturated and unsaturated carboxylic fatty acids and alkylamine salts, alkyl esters and alkyl amide derivatives of these fatty acids are effective in improving the lubricity of hydrate inhibitor formulations, thereby effectively reducing the level of wear on moving parts of a pump under a load during pumping of the hydrate inhibitor formulation, for instance into an umbilical for a subsea hydrocarbon production operation.Type: ApplicationFiled: February 23, 2017Publication date: June 8, 2017Applicant: BAKER HUGHES INCORPORATEDInventors: PAUL J. BIGGERSTAFF, MARC N. LEHMANN, ANNA M. DHUET, JERRY J. WEERS
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Patent number: 9605196Abstract: Saturated and unsaturated carboxylic fatty acids and alkylamine salts, alkyl esters and alkyl amide derivatives of these fatty acids are effective in improving the lubricity of hydrate inhibitor formulations, thereby effectively reducing the level of wear on moving parts of a pump under a load during pumping of the hydrate inhibitor formulation, for instance into an umbilical for a subsea hydrocarbon production operation.Type: GrantFiled: November 7, 2012Date of Patent: March 28, 2017Assignee: BAKER HUGHES INCORPORATEDInventors: Paul J. Biggerstaff, Marc N. Lehmann, Anna M. Dhuet, Jerry J. Weers
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Patent number: 9249516Abstract: An oxygen scavenger composition is effective in reducing oxygen-induced corrosion in aqueous systems that contain water, oxygen and a significant proportion (at least about 20 wt %) of a glycol, such as monoethylene glycol (MEG). The oxygen scavenger composition contains a sulfite, a transition metal salt, and a stabilizer to enhance the kinetics of oxygen removal (scavenging). The oxygen scavenger composition is particularly suitable when the transition metal salt component includes at least two different transition metals together, such as Ni and Co, or Ni and Mn.Type: GrantFiled: April 19, 2013Date of Patent: February 2, 2016Assignee: BAKER HUGHES INCORPORATEDInventors: Marc N. Lehmann, Christopher William Bowman, Wai Yeung Mok, Neil Jonathan Barr
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Publication number: 20150322330Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: ApplicationFiled: July 17, 2015Publication date: November 12, 2015Applicant: Baker Hughes IncorporatedInventors: HOWARD JAMES SPENCER, RAVINDER VIRDEE, MICHAEL P. SQUICCIARINI, GORDON T. RIVERS, MARC N. LEHMANN
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Publication number: 20150322746Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: ApplicationFiled: July 17, 2015Publication date: November 12, 2015Applicant: Baker Hughes IncorporatedInventors: HOWARD JAMES SPENCER, RAVINDER VIRDEE, MICHAEL P. SQUICCIARINI, GORDON T. RIVERS, MARC N. LEHMANN
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Patent number: 9170250Abstract: Detecting a spin probe in an oilfield fluid may indicate or determine the amount of the particular chemicals within an oilfield fluid. The detection of the spin probe may also indicate at least one property of the oilfield fluid, such as but not limited to pH, dielectric constant, rotational freedom of the spin probe, at least one chemical, the concentration of at least one chemical, residue of at least one chemical in the fluid, the speciation of coupled chemistry between the spin probe and the chemical, and combinations thereof. In one non-limiting embodiment, the spin probe may be attached to at least one chemical. The oilfield fluid may be or include, but is not limited to, a drilling fluid, a completion fluid, a production fluid, a servicing fluid, and combinations thereof.Type: GrantFiled: March 5, 2013Date of Patent: October 27, 2015Assignee: BAKER HUGHES INCORPORATEDInventors: Marc N. Lehmann, Matthew Hilfiger
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Patent number: 9145465Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.Type: GrantFiled: October 10, 2012Date of Patent: September 29, 2015Assignee: BAKER HUGHES INCORPORATEDInventors: Howard James Spencer, Ravinder Virdee, Michael P. Squicciarini, Gordon T. Rivers, Marc N. Lehmann
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Publication number: 20150159104Abstract: The lifetime of artificial lift systems, such as progressing cavity pumps (PCPs), used to transport aqueous slurries which contain fine particles, e.g. coal fines, may be prolonged by incorporation of at least one dispersant in the slurries. The dispersants act to inhibit or prevent the fine particles from agglomerating to plug the artificial lift intake and/or inhibit or prevent the agglomerated coal fines settling above the artificial lift system. The dispersant may also improve the lubricity of the slurry.Type: ApplicationFiled: December 2, 2014Publication date: June 11, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: MARC N. LEHMANN, ROBERT C. HICKS, ALISON R. MORRIS, CHERYL L. LICARI
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Publication number: 20140314620Abstract: An oxygen scavenger composition is effective in reducing oxygen-induced corrosion in aqueous systems that contain water, oxygen and a significant proportion (at least about 20 wt %) of a glycol, such as monoethylene glycol (MEG). The oxygen scavenger composition contains a sulfite, a transition metal salt, and a stabilizer to enhance the kinetics of oxygen removal (scavenging). The oxygen scavenger composition is particularly suitable when the transition metal salt component includes at least two different transition metals together, such as Ni and Co, or Ni and Mn.Type: ApplicationFiled: April 19, 2013Publication date: October 23, 2014Applicant: Baker Hughes IncorporatedInventors: Marc N. Lehmann, Christopher William Bowman, Wai Yeung Mok, Neil Jonathan Barr
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Patent number: 8703655Abstract: A homopolymer of a monomer selected from those having the general formula: wherein: R1 is H or CH3; R2 is H or an alkyl group having from 1 to about 4 carbon atoms; A is a straight or branched chain alkyl group having from 1 to 10 carbon atoms; and R3, R4, and R5 each are independently an alkyl group having from 1 to 6 carbon atoms; or a copolymer of such monomers as acrylate, acrylamide or methacrylamide may be used to disperse metal sulfides prior to their forming scales during the production and transportation of crude oil. Terpolymers of dimethyldiallylammonium salt, 2-hydroxypropyl acrylate; and acrylic acid may also be used for this purpose. The production fluid may also be treated with a compound that promotes the formation of dispersible sulfide scales.Type: GrantFiled: June 9, 2008Date of Patent: April 22, 2014Assignee: Baker Hughes IncorporatedInventors: Marc N. Lehmann, Faezeh F. Firouzkouhi, Michael P. Squicciarini, Tauseef Salma
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Patent number: 8579035Abstract: In a method for optimizing gas lift operations in the production of crude oil, a surfactant is injected into the an oil well such that the surface tension between a lift gas and the formation fluid being produced is reduced and/or a lift gas-formation fluid foam is formed. The reduction in surface tension and/or foam formation increases the efficiency of the lift gas for lifting the formation fluid to the surface. The surfactant is a silicone resin which may be combined with other surfactants, in some embodiments.Type: GrantFiled: July 28, 2010Date of Patent: November 12, 2013Assignee: Baker Hughes IncorporatedInventors: Scott E. Lehrer, Saet B. Debord, Marc N. Lehmann, Nancy C. Means
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Publication number: 20130236983Abstract: Detecting a spin probe in an oilfield fluid may indicate or determine the amount of the particular chemicals within an oilfield fluid. The detection of the spin probe may also indicate at least one property of the oilfield fluid, such as but not limited to pH, dielectric constant, rotational freedom of the spin probe, at least one chemical, the concentration of at least one chemical, residue of at least one chemical in the fluid, the speciation of coupled chemistry between the spin probe and the chemical, and combinations thereof. In one non-limiting embodiment, the spin probe may be attached to at least one chemical. The oilfield fluid may be or include, but is not limited to, a drilling fluid, a completion fluid, a production fluid, a servicing fluid, and combinations thereof.Type: ApplicationFiled: March 5, 2013Publication date: September 12, 2013Applicant: BAKER HUGHES INCORPORATEDInventors: Marc N. Lehmann, Matthew Hilfiger
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Publication number: 20130130941Abstract: Saturated and unsaturated carboxylic fatty acids and alkylamine salts, alkyl esters and alkyl amide derivatives of these fatty acids are effective in improving the lubricity of hydrate inhibitor formulations, thereby effectively reducing the level of wear on moving parts of a pump under a load during pumping of the hydrate inhibitor formulation, for instance into an umbilical for a subsea hydrocarbon production operation.Type: ApplicationFiled: November 7, 2012Publication date: May 23, 2013Applicant: Baker Hughes IncorporatedInventors: Paul J. Biggerstaff, Marc N. Lehmann, Anna M. Dhuet, Jerry J. Weers
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Publication number: 20120247972Abstract: Reducing the concentration of kinetic hydrate inhibitors in produced water may be accomplished by treating the produced water using a method selected from the group consisting of chemical adsorption, solvent extraction, chemical coagulation, electrochemical coagulation and combinations thereof. Such reductions may in some instances allow for the reuse of produced water for irrigation or recycle in oil and gas production.Type: ApplicationFiled: March 22, 2012Publication date: October 4, 2012Applicant: BAKER HUGHES INCORPORATEDInventors: Howard J. Spencer, Marc N. Lehmann, Tudor C. Ionescu, Timothy Z. Garza, Steven J. Jackson