Patents by Inventor Shaohua Lu
Shaohua Lu 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: 11739257Abstract: The present invention relates to a hydraulic fracturing fluid composition comprising a homogeneous non-aqueous organic phase mixture which mixture comprises a base fluid and one or more surfactants.Type: GrantFiled: May 25, 2021Date of Patent: August 29, 2023Assignee: SHELL USA, INC.Inventors: Donald Curtis Van Slyke, Shawn Shaohua Lu
-
Publication number: 20220380662Abstract: The present invention relates to a hydraulic fracturing fluid composition comprising a homogeneous non-aqueous organic phase mixture which mixture comprises a base fluid and one or more surfactants.Type: ApplicationFiled: May 25, 2021Publication date: December 1, 2022Inventors: Donald Curtis VAN SLYKE, Shawn Shaohua LU
-
Patent number: 11015106Abstract: A method for drilling a borehole includes, while drilling, circulating a fluid composition. The fluid composition includes an aqueous continuous phase comprising an additive composition, the additive composition comprising an amphoteric polymer, a polyacrylamide, or a combination thereof; and an organic internal phase comprising a glycerol, a polyglycerol, a poly hydroxyl alcohol, a monosaccharide derivative, a polysaccharide derivative, or a combination thereof. In one embodiment, the additive composition includes a salt up to saturation and at least one of an amphoteric polymer or a polyacrylamide. In another embodiment, the additive composition includes a hydratable polymer, and an amphoteric polymer.Type: GrantFiled: March 20, 2020Date of Patent: May 25, 2021Assignee: Weatherford Technology Holdings, LLCInventors: César Misino, Luc Leoni, Shaohua Lu, Gaston Wray Curtis
-
Publication number: 20210041333Abstract: A manufacturing method for mass production for a tissue or cell microarray, which is characterized in comprising: using a molding device to mold tissue particles, cultivated cells or collected exfoliated cells (such as exfoliated cells from pleural effusion and ascites), forming the tissue particles from blended fresh tissue, tissue fixed by formalin or another solvent (such as alcohol and so on) or a tissue block embedded in paraffin (blended by a tissue blender), implanting the molded tissue or cells cores in a receptor wax or adhering the molded tissue or cells cores onto a metal plate, and then slicing to obtain a tissue or cell microarray.Type: ApplicationFiled: October 23, 2020Publication date: February 11, 2021Inventors: Yingyong HOU, Chen XU, Dongxian JIANG, Qi SONG, Haixing WANG, Yalan LIU, Jie HUANG, Lingli CHEN, Rongkui LUO, Qin HU, Yuan JI, Shaohua LU, Jun HOU, Lijuan LUAN, Jieakesu SU
-
Publication number: 20200216740Abstract: A method for drilling a borehole includes, while drilling, circulating a fluid composition. The fluid composition includes an aqueous continuous phase comprising an additive composition, the additive composition comprising an amphoteric polymer, a polyacrylamide, or a combination thereof; and an organic internal phase comprising a glycerol, a polyglycerol, a poly hydroxyl alcohol, a monosaccharide derivative, a polysaccharide derivative, or a combination thereof. In one embodiment, the additive composition includes a salt up to saturation and at least one of an amphoteric polymer or a polyacrylamide. In another embodiment, the additive composition includes a hydratable polymer, and an amphoteric polymer.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Inventors: César MISINO, Luc LEONI, Shaohua LU, Gaston Wray CURTIS
-
Patent number: 10669468Abstract: Compositions emulate oil based fluids include an aqueous phase and an organic internal phase, which creates an osmotic membrane within the aqueous continuous phase. The osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid, where the non-aqueous phase is composed of glycerols, polyglycerols, poly hydroxyl alcohols, monosaccharide derivatives, polysaccharide derivatives, or mixtures and combinations thereof, while the aqueous phase contains additives that impart different inhibiting mechanisms to the overall composition, where the additives include, without limitation, amphoteric polymers, potassium and/or sodium salts up to saturation and/or acrylamides.Type: GrantFiled: October 3, 2014Date of Patent: June 2, 2020Inventors: César Misino, Luc Leoni, Shaohua Lu, Gaston Wray Curtis
-
Patent number: 10190032Abstract: Wellbore fluids may include at least one viscoelastic surfactant, a first brine solution including one or more water soluble monovalent cation salts, and a second brine solution including one or more water soluble divalent cation salts in an amount effective to increase the viscosity of the wellbore fluid. The wellbore fluid may be injected into a wellbore as a gravel packing agent, to enhance the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli, or to reduce fluid loss.Type: GrantFiled: June 21, 2012Date of Patent: January 29, 2019Assignee: M-I L.L.C.Inventor: Shaohua Lu
-
Patent number: 10144861Abstract: Described is a method including emplacing a breaker fluid into a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake. The breaker fluid includes a non-oleaginous base fluid and a surfactant blend comprising an alkyl polyglycoside, an ethoxylated alcohol, and a triethyleneglycol monobutyl ether. The method further includes allowing the breaker fluid to break the oil-based filter cake.Type: GrantFiled: May 31, 2013Date of Patent: December 4, 2018Assignee: M-I L.L.C.Inventor: Shaohua Lu
-
Publication number: 20160108303Abstract: A wellbore fluid is provided that includes at least one viscoelastic surfactant, a first brine solution including one or more water soluble monovalent cation salts, and a second brine solution including one or more water soluble divalent cation salts in an amount effective to increase the viscosity of the wellbore fluid. The wellbore fluid may be injected into a wellbore as a gravel packing agent, to enhance the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli, or to reduce fluid loss.Type: ApplicationFiled: June 21, 2012Publication date: April 21, 2016Applicant: M-I L.L.C.Inventor: Shaohua LU
-
Publication number: 20160009977Abstract: A wellbore fluid is provided having controllable viscosity, which includes a brine having a monovalent salt and/or a polyvalent salt; an encapsulated monovalent salt and/or an encapsulated polyvalent salt; and a viscoelastic surfactant, where the wellbore fluid contains at least one monovalent salt and at least one polyvalent salt in the form of a brine and/or an encapsulated salt.Type: ApplicationFiled: June 21, 2012Publication date: January 14, 2016Inventor: Shaohua LU
-
Publication number: 20150337195Abstract: Described is a method including emplacing a breaker fluid into a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake. The breaker fluid includes a non-oleaginous base fluid and a surfactant blend comprising an alkyl polyglycoside, an ethoxylated alcohol, and a triethyleneglycol monobutyl ether. The method further includes allowing the breaker fluid to break the oil-based filter cake.Type: ApplicationFiled: May 31, 2013Publication date: November 26, 2015Inventor: Shaohua LU
-
Publication number: 20150096808Abstract: Compositions emulate oil based fluids include an aqueous phase and an organic internal phase, which creates an osmotic membrane within the aqueous continuous phase. The osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid, where the non-aqueous phase is composed of glycerols, polyglycerols, poly hydroxyl alcohols, monosaccharide derivatives, polysaccharide derivatives, or mixtures and combinations thereof, while the aqueous phase contains additives that impart different inhibiting mechanisms to the overall composition, where the additives include, without limitation, amphoteric polymers, potassium and/or sodium salts up to saturation and/or acrylamides.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Inventors: César Misino, Luc Leoni, Shaohua Lu, Gaston Wray Curtis
-
Patent number: 8584760Abstract: A method of cleaning walls of a wellbore that includes contacting the walls with a cleaning fluid, the cleaning fluid comprising: a base fluid comprising a blend of a base oil and at least one of a mutual solvent or a terpene; and an alkyl glycoside is disclosed herein.Type: GrantFiled: January 8, 2010Date of Patent: November 19, 2013Assignee: M-I L.L.C.Inventors: Morris Arvie, Jr., Shaohua Lu, Eugene Dakin
-
Publication number: 20110272160Abstract: A method of cleaning walls of a wellbore that includes contacting the walls with a cleaning fluid, the cleaning fluid comprising: a base fluid comprising a blend of a base oil and at least one of a mutual solvent or a terpene; and an alkyl glycoside is disclosed herein.Type: ApplicationFiled: January 8, 2010Publication date: November 10, 2011Applicant: M-I L.L.C.Inventors: Morris Arvie, JR., Shaohua Lu, Eugene Dakin
-
Patent number: 8002988Abstract: Embodiments of the present invention relate to the removal of contaminants from water using sugar based surfactant enhanced ultrafiltration. Embodiments of the present invention are directed to a process for removal of an at least slightly water-soluble organic compound from an organic-contaminated water solution to provide a purified water solution, including: adding a surfactant to the organic-contaminated water solution in sufficient quantity to achieve at least a critical micellar concentration of the surfactant in the organic-contaminated water solution, wherein the surfactant comprises an alkylglycoside, to provide a micellar water solution comprising micelles comprising the surfactant and the organic compound; contacting an ultrafiltration membrane with the micellar water solution under pressure and temperature conditions sufficient for liquid flow through the ultrafiltration membrane to take place; and collecting liquid permeating the ultrafiltration membrane to provide the purified water solution.Type: GrantFiled: April 28, 2008Date of Patent: August 23, 2011Assignee: The Trustees of Columbia University in the City of New YorkInventors: Ponisseril Somasundaran, Shaohua Lu
-
Publication number: 20080308495Abstract: Embodiments of the present invention relate to the removal of contaminants from water using sugar based surfactant enhanced ultrafiltration. Embodiments of the present invention are directed to a process for removal of an at least slightly water-soluble organic compound from an organic-contaminated water solution to provide a purified water solution, including: adding a surfactant to the organic-contaminated water solution in sufficient quantity to achieve at least a critical micellar concentration of the surfactant in the organic-contaminated water solution, wherein the surfactant comprises an alkylglycoside, to provide a micellar water solution comprising micelles comprising the surfactant and the organic compound; contacting an ultrafiltration membrane with the micellar water solution under pressure and temperature conditions sufficient for liquid flow through the ultrafiltration membrane to take place; and collecting liquid permeating the ultrafiltration membrane to provide the purified water solution.Type: ApplicationFiled: April 28, 2008Publication date: December 18, 2008Inventors: Ponisseril Somasundaran, Shaohua Lu