Patents by Inventor Carlos Abad
Carlos Abad 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: 9022111Abstract: A method for treating a subterranean formation, including estimating the solubility parameter of a monomer; selecting a solvent based on the parameter; forming a fluid comprising the monomer and solvent; and introducing the fluid to the formation, wherein the formation is about 350° F. or warmer. A method for treating a subterranean formation, including forming a fluid comprising the monomer and solvent, wherein the monomer comprises poly(2-hydroxyethyl methacrylate) and/or poly(2-hydroxyethyl acrylate, and wherein the solvent comprises zinc bromide or calcium bromide or both; and introducing the fluid to the formation, wherein the formation is about 350° F. or warmer.Type: GrantFiled: May 9, 2011Date of Patent: May 5, 2015Assignee: Schlumberger Technology CorporationInventors: Alhad Phatak, Carlos Abad
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Patent number: 9023280Abstract: A system and method for determining the asphaltene content of a downhole oil sample are provided. In one example, the method includes obtaining a hydrocarbon sample from a hydrocarbon formation of a reservoir at a given depth using a downhole tool. A liquid phase of the hydrocarbon sample is isolated within the downhole tool and the liquid phase is subjected to downhole analysis within the downhole tool to create a chromatography sample. The downhole analysis is based at least partially on size exclusion chromatography. A first property of the chromatography sample is measured to obtain a measured value, and a second property of the chromatography sample is estimated based on the measured value and known calibration curves.Type: GrantFiled: February 11, 2014Date of Patent: May 5, 2015Assignee: Schlumberger Technology CorporationInventors: Carlos Abad, Anthony R. H. Goodwin, Bruno Drochon
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Patent number: 9006153Abstract: Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used along with selected breaking activators for the bromate breaking compounds. Useful bromate breaking activators include acid-generating breaking activators, oxidizing sulfur containing breaking activators, and reducing agent breaking activators.Type: GrantFiled: June 6, 2013Date of Patent: April 14, 2015Assignee: Schlumberger Technology CorporationInventors: Lijun Lin, Carlos Abad, Belgin Baser, Leiming Li
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Patent number: 8997941Abstract: An elevator safety circuit can be used to decelerate an elevator car during an emergency stop in a controlled manner. The safety circuit includes a series chain of safety contacts having an input connected to a power source and a first safety relay deriving electrical power from an output of the series chain of safety contacts. A delay circuit is arranged between the output of the series chain of safety contacts and the first safety relay. Hence, if any of the safety contacts open to initiate an emergency stop, a process controlled by the operation of the first safety relay is delayed.Type: GrantFiled: November 10, 2011Date of Patent: April 7, 2015Assignee: Inventio AGInventor: Juan Carlos Abad
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Patent number: 8950490Abstract: A method of well treatment that includes providing a well treatment composition containing a non-functionalized cellulose material and a halide salt composition containing at least zinc halide, calcium halide or a mixture thereof, and placing the well treatment composition within a wellbore or a subterranean formation, and wherein the halide salt composition dissolves at least a portion of the non-functionalized cellulose material.Type: GrantFiled: February 28, 2012Date of Patent: February 10, 2015Assignee: Schlumberger Technology CorporationInventors: Alhad Phatak, Carlos Abad
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Patent number: 8916507Abstract: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.Type: GrantFiled: June 24, 2011Date of Patent: December 23, 2014Assignee: Schlumberger Technology CorporationInventors: Lijun Lin, Carlos Abad, Bruno Drochon, Gregory Kubala, Laura Shafer, Alejandro Pena, Ramsey Buoy
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Patent number: 8899107Abstract: A system and method for determining the asphaltene content of a downhole oil sample are provided. In one example, the method includes obtaining a hydrocarbon sample from a hydrocarbon formation of a reservoir at a given depth using a downhole tool. A liquid phase of the hydrocarbon sample is isolated within the downhole tool and the liquid phase is subjected to downhole analysis within the downhole tool to create a chromatography sample. The downhole analysis is based at least partially on size exclusion chromatography. A first property of the chromatography sample is measured to obtain a measured value, and a second property of the chromatography sample is estimated based on the measured value and known calibration curves.Type: GrantFiled: March 11, 2009Date of Patent: December 2, 2014Assignee: Schlumberger Technology CorporationInventors: Carlos Abad, Anthony R. H. Goodwin, Bruno Drochon
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Patent number: 8893784Abstract: Methods and apparatus to control the additives to a chemical composition for use in the oil field services industry. Specifically, a method and apparatus to determine fluid parameters for a fluid, including introducing an inert tracer in a component; forming a fluid comprising the component; observing the concentration of the tracer in the fluid; calculating the concentration of the component in the fluid; and introducing the fluid into a subterranean formation. An apparatus and method to control fluid parameters of interest for an oilfield formulation fluid such as chemical composition including introducing an inert tracer in a component; forming a fluid comprising the component; observing the concentration of the tracer in the fluid; calculating the concentration of the component in the fluid; adjusting a flow rate when forming the fluid in response to the calculating; and introducing the fluid into a subterranean formation.Type: GrantFiled: June 30, 2010Date of Patent: November 25, 2014Assignee: Schlumberger Technology CorporationInventor: Carlos Abad
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Patent number: 8846582Abstract: The recovery of oil from a reservoir is assisted by injecting a diluent into the reservoir formation to reduce the viscosity of the crude oil. This diluent is a mixture of a material which is an asphaltene precipitant, especially supercritical carbon dioxide, and a more polar material which comprises at least one aliphatic compound which includes at least one of a cycloaliphatic ring, an olefinic unsaturation, an ester or ether group. The inclusion of such an aliphatic compound which is more polar than the asphaltene precipitant reduces asphaltene precipitation and can enhance the efficiency of oil recovery when the precipitant is by supercritical carbon dioxide.Type: GrantFiled: April 23, 2009Date of Patent: September 30, 2014Assignee: Schlumberger Technology CorporationInventors: Trevor Hughes, Gary Tustin, Alexander Wilson, Carlos Abad
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Publication number: 20140196897Abstract: Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used along with selected breaking activators for the bromate breaking compounds. Useful bromate breaking activators include acid-generating breaking activators, oxidizing sulfur containing breaking activators, and reducing agent breaking activators.Type: ApplicationFiled: June 6, 2013Publication date: July 17, 2014Applicant: Schlumberger Technology CorporationInventors: Lijun Lin, Carlos Abad, Belgin Baser, Leiming Li
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Publication number: 20140200211Abstract: The present invention is directed to compositions and methods for treating presbyopia, mild hyperopia, and irregular astigmatism. The compositions include a cholinergic agent, such as a muscarinic acetylcholine receptor M3 agonist, and an alpha agonist having an imidazoline group or a non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity. It has been found that an alpha agonist having an imidazoline group or non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity in combination with a cholinergic agent, such as pilocarpine, act synergistically to improve the accommodative and focusing ability of the eye while minimizing the side effects from each compound.Type: ApplicationFiled: September 19, 2012Publication date: July 17, 2014Inventor: Juan Carlos Abad
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Publication number: 20140174742Abstract: Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Applicant: Schlumberger Technology CorporationInventors: Andrey Mirakyan, Michael D. Parris, Carlos Abad, Yiyan Chen
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Publication number: 20140174743Abstract: Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Andrey Mirakyan, Michael D. Parris, Carlos Abad, Yiyan Chen
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Publication number: 20140157877Abstract: A system and method for determining the asphaltene content of a downhole oil sample are provided. In one example, the method includes obtaining a hydrocarbon sample from a hydrocarbon formation of a reservoir at a given depth using a downhole tool. A liquid phase of the hydrocarbon sample is isolated within the downhole tool and the liquid phase is subjected to downhole analysis within the downhole tool to create a chromatography sample. The downhole analysis is based at least partially on size exclusion chromatography. A first property of the chromatography sample is measured to obtain a measured value, and a second property of the chromatography sample is estimated based on the measured value and known calibration curves.Type: ApplicationFiled: February 11, 2014Publication date: June 12, 2014Applicant: Schlumberger Technology CorporationInventors: Carlos Abad, Anthony R.H. Goodwin, Bruno Drochon
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Publication number: 20140158356Abstract: An apparatus usable with a well includes an explosive pellet that is adapted to be communicated into the well via a fluid and includes an explosive material that is adapted to be detonated downhole in the well. The apparatus further includes an encapsulant to encapsulate the explosive pellet to inhibit unintended detonation of the explosive material. The encapsulant is adapted to be at least partially removed from the explosive pellet in response to the explosive pellet being communicated into the well.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: Schlumberger Technology CorporationInventors: Timothy Al Andrzejak, Jorge E. Lopez De Cardenas, Gary L. Rytlewski, Carlos Abad, Javier Sanchez Reyes
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Publication number: 20140113946Abstract: The present invention is directed to compositions and methods for treating presbyopia, mild hyperopia, and irregular astigmatism. The compositions include a cholinergic agent, such as a muscarinic acetylcholine receptor M3 agonist, and an alpha agonist having an imidazoline group or a non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity. It has been found that an alpha agonist having an imidazoline group or non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity in combination with a cholinergic agent, such as pilocarpine, act synergistically to improve the accommodative and focusing ability of the eye while minimizing the side effects from each compound.Type: ApplicationFiled: December 24, 2013Publication date: April 24, 2014Applicant: ALLERGAN, INC.Inventor: Juan Carlos Abad
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Patent number: 8697610Abstract: Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased.Type: GrantFiled: May 7, 2008Date of Patent: April 15, 2014Assignee: Schlumberger Technology CorporationInventors: Andrey Mirakyan, Michael D. Parris, Carlos Abad, Yiyan Chen
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Patent number: 8689873Abstract: The toughness of set cement may be enhanced by incorporating partially cured waterborne resins in the cement matrix. A hardening agent is added to the waterborne resin, and the mixture is allowed to react for periods between about 1 min and 15 min. The waterborne resin with hardening agent is then combined with an inorganic cement to form a pumpable slurry.Type: GrantFiled: October 27, 2011Date of Patent: April 8, 2014Assignee: Schlumberger Technology CorporationInventors: Carlos Abad, Hemant K. J. Ladva
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Patent number: 8688383Abstract: The magnitude of asphaltic precipitation when injecting a viscosity reducing diluent into a reservoir formation, notably to assist oil recovery therefrom, is forecast by (i) determining a relationship between asphaltic precipitation and a solubility parameter for the diluted oil, and then (ii) utilizing that relationship to forecast the magnitude of asphaltic precipitation when injecting a predetermined viscosity reducing diluent into the formation. Making this forecast may be followed by injecting a viscosity reducing diluent into the formation to assist oil recovery. The diluent may in particular be supercritical carbon dioxide or other asphaltene precipitant mixed with a more polar material in proportions designed by forecasting asphaltic precipitation by candidate materials in possible proportions.Type: GrantFiled: April 23, 2009Date of Patent: April 1, 2014Assignee: Sclumberger Technology CorporationInventors: Trevor Hughes, Gary Tustin, Alexander Wilson, Carlos Abad, Shiyi Wang
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Publication number: 20140083700Abstract: Compositions comprise water, an acrylate monomer or a methacrylate monomer or a combination thereof, a free-radical polymerization initiator and a water-soluble bromide salt. Such compositions have utility in the context of remedial cementing, plug cementing in particular. The compositions may be pumped into a subterranean well, where they polymerize and form a support on which a cement plug may sit. The support may maintain the position of the cement plug in the wellbore and minimize cement-plug contamination.Type: ApplicationFiled: September 26, 2012Publication date: March 27, 2014Applicant: Schlumberger Technology CorporationInventors: Alhad Phatak, Carlos Abad