Patents by Inventor Keng Seng Chan
Keng Seng Chan 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: 8286704Abstract: Methods and systems of hydrocarbon production where wellbore stimulation and production is achieved in a single wellbore run-in, and inflow control devices are installed in an existing wellbore completion. A coiled tubing string is conveyed into a substantially horizontal portion of a wellbore, where the coiled tubing string has a production tubular configured to execute both stimulation and recovery operations. The production tubular can include an inflow control device to be installed in an existing wellbore.Type: GrantFiled: October 27, 2009Date of Patent: October 16, 2012Assignee: Schlumberger Technology CorporationInventors: Keng Seng Chan, Kim Fah Goh, Bipin Jain
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Patent number: 7984761Abstract: An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.Type: GrantFiled: November 2, 2010Date of Patent: July 26, 2011Assignee: Schlumberger Technology CorporationInventors: Frank F. Chang, Lawrence A. Behrmann, Ian C. Walton, Keng Seng Chan
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Publication number: 20110042089Abstract: An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.Type: ApplicationFiled: November 2, 2010Publication date: February 24, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Frank F. Chang, Lawrence A. Behrmann, Ian C. Walton, Keng Seng Chan
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Patent number: 7845410Abstract: An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.Type: GrantFiled: October 15, 2008Date of Patent: December 7, 2010Assignee: Schlumberger Technology CorporationInventors: Frank F. Chang, Lawrence A. Behrmann, Ian C. Walton, Keng Seng Chan
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Publication number: 20100108313Abstract: Methods and systems of hydrocarbon production where wellbore stimulation and production is achieved in a single wellbore run-in, and inflow control devices are installed in an existing wellbore completion. A coiled tubing string is conveyed into a substantially horizontal portion of a wellbore, where the coiled tubing string has a production tubular configured to execute both stimulation and recovery operations. The production tubular can include an inflow control device to be installed in an existing wellbore.Type: ApplicationFiled: October 27, 2009Publication date: May 6, 2010Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Keng Seng Chan, Kim Fah Goh, Bipin Jain
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Publication number: 20090143257Abstract: A composition for treatment of a subterranean formation, which may be used for water control, is comprised of at least one of 1) a premix of an oleochemical polyol, at least one of polyisocyanate, polycyanate and polyisothiocyanate, and a blocking agent to temporarily block all or a portion of free reactive groups of said at least one of polyisocyanate, polycyanate and polyisothiocyanate. Alternatively, or in addition, the composition may be comprised of a solvent and 2) a polyurethane prepolymer formed by reacting an oleochemical polyol and at least one of polyisocyanate, polycyanate and polyisothiocyanate. A blocking agent may also be used with the polyurethane prepolymer. The composition may be used in a method of treating a subterranean formation penetrated by a wellbore by introducing the composition into the formation through the wellbore.Type: ApplicationFiled: February 13, 2008Publication date: June 4, 2009Inventors: Ling Kong Teng, Keng Seng Chan, Suzylawati Ismail, Mathew Samuel, Jay Russell, Trevor Lloyd Hughes
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Publication number: 20090032258Abstract: An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.Type: ApplicationFiled: October 15, 2008Publication date: February 5, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Frank F. Chang, Lawrence A. Behrmann, Ian C. Walton, Keng Seng Chan
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Patent number: 7470321Abstract: The invention relates to composition particularly suitable for squeeze cementing operations at temperature above 160 ° C. This composition comprises an aqueous base, a liquid set-retarder and a solid phase including a blend of micro fine alumina, micro fine silica and a micro fine cementitious material.Type: GrantFiled: January 30, 2006Date of Patent: December 30, 2008Assignee: Schlumberger Technology CorporationInventors: Keng Seng Chan, Youssef Elmarsafawi
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Patent number: 7458424Abstract: A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations, especially low permeability formations, is disclosed. The gelling system comprises a basic silica sol, an activator comprising a hydroxyl donor, and an optional syneresis inhibitor. In the disclosed method of using the gelling system, the gelling system may be pumped into formations with excessive water and/or gas production and thermally activated in the formation at downhole conditions to form a hard gel to reduce water and/or gas production.Type: GrantFiled: April 26, 2007Date of Patent: December 2, 2008Assignee: Schlumberger Technology CorporationInventors: Nadir M. M. Odeh, Hassan Chaabouni, Keng Seng Chan, Philippe Enkababian
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Patent number: 7451819Abstract: An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.Type: GrantFiled: March 22, 2005Date of Patent: November 18, 2008Assignee: Schlumberger Technology CorporationInventors: Frank F. Chang, Lawrence A. Behrmann, Ian C. Walton, Keng Seng Chan
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Publication number: 20080035344Abstract: A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations is disclosed. The gelling system comprises an acidic aqueous solution of acid-soluble or cationic polyacrylamide, an at least partially neutralized acid aluminum salt, an activator comprising a hydroxyl donor, and an optional gel modifier. The gelling system may be pumped into formations with excessive water production and thermally activated in the formation at downhole conditions to form a co-gel of polyacrylamide interspersed in an inorganic gel network to reduce water production.Type: ApplicationFiled: August 7, 2006Publication date: February 14, 2008Inventors: Nadir Odeh, Mathew Samuel, Philippe Enkababian, Keng Seng Chan
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Publication number: 20080035343Abstract: A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations, especially low permeability formations, is disclosed. The gelling system comprises a basic silica sol, an activator comprising a hydroxyl donor, and an optional syneresis inhibitor. In the disclosed method of using the gelling system, the gelling system may be pumped into formations with excessive water and/or gas production and thermally activated in the formation at downhole conditions to form a hard gel to reduce water and/or gas production.Type: ApplicationFiled: April 26, 2007Publication date: February 14, 2008Inventors: Nadir M.M. Odeh, Hassan Chaabouni, Keng Seng Chan, Philippe Enkababian
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Patent number: 7008908Abstract: A method for preferentially treating a subterranean formation having at least one primarily oil producing layer and at least one primarily water producing layer. The method involves the steps of providing a water shut-off gel into the formation to preferentially treat the water producing layers. This is followed by providing a viscoelastic fluid into the formation, where the viscoelastic fluid is broken by hydrocarbon, thereby remaining and viscosifying primarily in the water producing layers. Finally, a reactive fluid, such as an acid fluid, is provided. The reactive fluid treats primarily the oil producing layers because the viscoelastic fluid and the water shut-off gel prevent the reactive fluid from substantially entering the water producing layers.Type: GrantFiled: November 22, 2002Date of Patent: March 7, 2006Assignee: Schlumberger Technology CorporationInventors: Keng Seng Chan, Pia-Angela Francini
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Publication number: 20040177960Abstract: Propped fractures in formations from which fluids are produced are described that have wormholes extending out into the formations from the faces of the fractures at locations distant from boreholes. Methods are given for creating such propped fractures having wormholes in which either a closed propped fracture is formed and then the wormholes are formed, or the entire fracture and channel system is formed before the closure occurs.Type: ApplicationFiled: January 28, 2003Publication date: September 16, 2004Inventors: Keng Seng Chan, J. Ernest Brown, Arthur William Milne, Brett Rimmer
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Publication number: 20040102331Abstract: A method for preferentially treating a subterranean formation having at least one primarily oil producing layer and at least one primarily water producing layer. The method involves the steps of providing a water shut-off gel into the formation to preferentially treat the water producing layers. This is followed by providing a viscoelastic fluid into the formation, where the viscoelastic fluid is broken by hydrocarbon, thereby remaining and viscosifying primarily in the water producing layers. Finally, a reactive fluid, such as an acid fluid, is provided. The reactive fluid treats primarily the oil producing layers because the viscoelastic fluid and the water shut-off gel prevent the reactive fluid from substantially entering the water producing layers.Type: ApplicationFiled: November 22, 2002Publication date: May 27, 2004Inventors: Keng Seng Chan, Pia-Angela Francini