Patents by Inventor Stephen Cliffe
Stephen Cliffe 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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Publication number: 20240059949Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth)acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.Type: ApplicationFiled: October 23, 2023Publication date: February 22, 2024Inventors: Dimitri M. Khramov, Stephen Cliffe, Reda Karoum
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Patent number: 11884871Abstract: Wellbore fluid compositions may include an oleaginous base fluid; and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 20 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid measured by FANN 35 rheometer at 3 rpm and 150° F. is in the range of 8 to 12. Methods may include emplacing a wellbore fluid in a wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 50 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid is in the range of 8 to 12.Type: GrantFiled: May 14, 2020Date of Patent: January 30, 2024Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dimitri M. Khramov, Yiyan Chen, Stephen Cliffe, Reda Karoum
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Patent number: 11827838Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth)acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.Type: GrantFiled: May 15, 2020Date of Patent: November 28, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dimitri M. Khramov, Stephen Cliffe, Reda Karoum
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Patent number: 11708518Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.Type: GrantFiled: February 26, 2018Date of Patent: July 25, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dimitri M Khramov, Reda Karoum, Stephen Cliffe
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Patent number: 11584876Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.Type: GrantFiled: February 26, 2018Date of Patent: February 21, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dimitri M. Khramov, Reda Karoum, Stephen Cliffe
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Patent number: 11555138Abstract: A method of drilling a wellbore includes pumping an oleaginous wellbore fluid into a wellbore, the oleaginous wellbore fluid including an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase; an organophilic clay; a weighting agent; and a wetting agent having an HLB ranging from about 4 to 10.5 that it selected such that the oleaginous wellbore fluid has a 600 rpm dial value at 40° F. of less than about 300 and a 10 minute gel strength of less than about 40 lbf/100 ft2.Type: GrantFiled: February 26, 2018Date of Patent: January 17, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Stephen Cliffe, Steven Young, Chemsseddine Bouguetta, Dimitri M. Khramov
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Patent number: 11543556Abstract: A method for evaluating drilling fluid includes making an NMR measurement of a sample of the drilling fluid and inverting the measurements to compute a corresponding T1T2 plot. The T1T2 plot is in turn evaluated to characterize the drilling fluid. In one embodiment, a stability index of the fluid may be computed from multiple NMR measurements made while aging the sample.Type: GrantFiled: August 17, 2020Date of Patent: January 3, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Yiqiao Tang, Reda Karoum, Yi-Qiao Song, Shin Utsuzawa, Stephen Cliffe
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Patent number: 11447680Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.Type: GrantFiled: February 26, 2018Date of Patent: September 20, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dimitri M. Khramov, Reda Karoum, Stephen Cliffe
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Publication number: 20220220356Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth)acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.Type: ApplicationFiled: May 15, 2020Publication date: July 14, 2022Inventors: Dimitri M. Khramov, Stephen Cliffe, Reda Karoum
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Patent number: 11340377Abstract: A method for evaluating drilling fluid includes making an NMR measurement of a sample of the drilling fluid and inverting the measurements to compute a corresponding T1T2 plot. The T1T2 plot is in turn evaluated to characterize the drilling fluid. In one embodiment, a stability index of the fluid may be computed from multiple NMR measurements made while aging the sample.Type: GrantFiled: August 17, 2020Date of Patent: May 24, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Yiqiao Tang, Reda Karoum, Yi-Qiao Song, Shin Utsuzawa, Stephen Cliffe
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Publication number: 20220050223Abstract: A method for evaluating drilling fluid includes making an NMR measurement of a sample of the drilling fluid and inverting the measurements to compute a corresponding T1T2 plot. The T1T2 plot is in turn evaluated to characterize the drilling fluid. In one embodiment, a stability index of the fluid may be computed from multiple NMR measurements made while aging the sample.Type: ApplicationFiled: August 17, 2020Publication date: February 17, 2022Inventors: Yiqiao Tang, Reda Karoum, Yi-Qiao Song, Shin Utsuzawa, Stephen Cliffe
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Publication number: 20200362221Abstract: Wellbore fluid compositions may include an oleaginous base fluid; and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 20 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid measured by FANN 35 rheometer at 3 rpm and 150° F. is in the range of 8 to 12. Methods may include emplacing a wellbore fluid in a wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 50 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid is in the range of 8 to 12.Type: ApplicationFiled: May 14, 2020Publication date: November 19, 2020Inventors: Dimitri M. Khramov, Yiyan Chen, Stephen Cliffe, Reda Karoum
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Publication number: 20200231860Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.Type: ApplicationFiled: February 26, 2018Publication date: July 23, 2020Inventors: Dimitri M Khramov, Reda Karoum, Stephen Cliffe
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Publication number: 20190382641Abstract: An additive composition for improving one or more cold temperature properties in oil-based fluids is provided. One additive composition may include a first additive component selected from at least one alcohol ethoxylate, at least one amine ethoxylate, at least one ethylene oxide/propylene oxide copolymer, or a combination thereof, wherein the first additive component has an HLB ranging from about 4 to about 10. The additive composition may also include a second additive component selected from at least one alcohol, propylene glycol, at least one alcohol ethoxylate, or a combination thereof, wherein the second additive component has a total number of carbons from about 2 to about 30 carbons and a degree of ethoxylation is from zero to about 10.Type: ApplicationFiled: August 30, 2019Publication date: December 19, 2019Inventors: Stephen Cliffe, Steven Young, Chemsseddine Bouguetta, Dimitri Khramov, Reda Karoum, Lynn Foster, Daria Khvostichenko, Damian Vickers
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Patent number: 10253238Abstract: Accretion inhibiting wellbore fluid compositions a ay contain a multiester, a sorbitan ester surfactant, and a base fluid, wherein the composition is in the form of a metastable emulsion. Methods may include emplacing a wellbore fluid into a wellbore, the wellbore fluid containing a multiester, and a sorbitan ester surfactant, wherein the wellbore fluid forms a metastable emulsion.Type: GrantFiled: November 11, 2016Date of Patent: April 9, 2019Assignees: M-I L.L.C., SCHLUMBERGER NORGE ASInventors: Stephen Cliffe, Anders Grinrod
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Publication number: 20180244975Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.Type: ApplicationFiled: February 26, 2018Publication date: August 30, 2018Applicant: M-I L.L.C.Inventors: Dimitri M. Khramov, Reda Karoum, Stephen Cliffe
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Publication number: 20180244976Abstract: A method of drilling a wellbore includes pumping an oleaginous wellbore fluid into a wellbore, the oleaginous wellbore fluid including an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase; an organophilic clay; a weighting agent; and a wetting agent having an HLB ranging from about 4 to 10.5 that it selected such that the oleaginous wellbore fluid has a 600 rpm dial value at 40° F. of less than about 300 and a 10 minute gel strength of less than about 40 lbf/100 ft2.Type: ApplicationFiled: February 26, 2018Publication date: August 30, 2018Applicant: M-I L.L.C.Inventors: Stephen Cliffe, Steven Young, Mario Bouguetta, Dimitri M. Khramov
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Publication number: 20170137692Abstract: Accretion inhibiting wellbore fluid compositions a ay contain a multiester, a sorbitan ester surfactant, and a base fluid, wherein the composition is in the form of a metastable emulsion. Methods may include emplacing a wellbore fluid into a wellbore, the wellbore fluid containing a multiester, and a sorbitan ester surfactant, wherein the wellbore fluid forms a metastable emulsion.Type: ApplicationFiled: November 11, 2016Publication date: May 18, 2017Applicants: M-I L.L.C., SCHLUMBERGER NORGE ASInventors: Stephen Cliffe, Anders Grinrod
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Patent number: 8889602Abstract: Embodiments disclosed herein relate to methods for stabilizing shales while drilling a wellbore into an earthen formation comprising circulating an aqueous based wellbore fluid in the wellbore while drilling through shales; wherein the aqueous-based wellbore fluid comprises a copolymer of acrylamide-type comonomers and at least one cationic comonomer.Type: GrantFiled: June 23, 2009Date of Patent: November 18, 2014Assignee: M-l Drilling Fluids U.K. LimitedInventor: Stephen Cliffe
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Publication number: 20110092396Abstract: Embodiments disclosed herein relate to methods for stabilizing shales while drilling a wellbore into an earthen formation comprising circulating an aqueous based wellbore fluid in the wellbore while drilling through shales; wherein the aqueous-based wellbore fluid comprises a copolymer of acrylamide-type comonomers and at least one cationic comonomer.Type: ApplicationFiled: June 23, 2009Publication date: April 21, 2011Applicant: M-I DRILLING FLUIDS U.K. LIMITEDInventor: Stephen Cliffe