Patents by Inventor Alan D. Eastman

Alan D. Eastman 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).

  • Publication number: 20200309101
    Abstract: Tiered or stacked geothermal loop energy systems may include closed-loop pipe systems disposed within a heat producing geologic formation. The pipe systems are emplaced in wellbores drilled so as to efficiently and effectively take advantage of localized formation properties.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 1, 2020
    Applicant: GreenFire Energy Inc.
    Inventors: Mark P. Muir, Alan D. Eastman
  • Patent number: 10527026
    Abstract: A method or apparatus that uses a fluid in a closed loop well system to extract heat from geothermal resources that are located in or near high-temperature, low-permeable geologic formations to produce power. In some embodiments, the closed loop system may include one or more heat exchange zones, where at least a portion of the one or more heat exchange zones may be disposed within a subterranean region having a temperature of at least 350° C. The subterranean region may be within a plastic zone or within 1000 meters of the plastic zone, the plastic zone having a temperature gradient of at least 80° C. per kilometer depth.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 7, 2020
    Assignee: GreenFire Energy Inc.
    Inventors: Mark P. Muir, Brian S. Higgins, Joseph A. Scherer, Alan D. Eastman
  • Publication number: 20190055930
    Abstract: A method or apparatus that uses a fluid in a closed loop well system to extract heat from geothermal resources that are located in or near high-temperature, low-permeable geologic formations to produce power. In some embodiments, the closed loop system may include one or more heat exchange zones, where at least a portion of the one or more heat exchange zones may be disposed within a subterranean region having a temperature of at least 350° C. The subterranean region may be within a plastic zone or within 1000 meters of the plastic zone, the plastic zone having a temperature gradient of at least 80° C. per kilometer depth.
    Type: Application
    Filed: February 25, 2016
    Publication date: February 21, 2019
    Applicant: GreenFire Energy Inc
    Inventors: Mark P. Muir, Brian S. Higgins, Joseph A. Scherer, Alan D. Eastman
  • Patent number: 9803626
    Abstract: Methods for thermalsiphoning supercritical CO2 within a geothermal formation includes providing a geothermal energy system that includes an underground hot rock reservoir, a production well, and an injection well that together form a fluid path suitable for circulating supercritical CO2. The supercritical CO2 flows by thermosiphoning. Thermosiphoning is maximized by maintaining a pressure between 1400-4000 psia, an injection temperature in a range from 50-200 C and a production temperature in a range from 150-600 where injection temperature and the production temperature differ by at least 50° C.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: October 31, 2017
    Assignee: GREENFIRE ENERGY INC.
    Inventors: Alan D. Eastman, Mark P. Muir, John R. Muir
  • Publication number: 20170211849
    Abstract: A process for producing power including injecting a first heat transfer fluid through an injection well to a geothermally-heated formation that contains a second heat transfer fluid. The first heat transfer fluid may then be heated via indirect heat exchange in an interwell run fluidly connected to the injection well and disposed within the geothermally-heated formation. The heated first heat transfer fluid may then be recovered through a production well fluidly connected to the interwell run. Thermal energy contained in the recovered heated first heat transfer fluid may then be converted in a power production unit fluidly connected to the injection well and the production well. The interwell run, in some embodiments, may include multiple heat exchange tubes disposed within a perforated casing or drill pipe.
    Type: Application
    Filed: March 9, 2015
    Publication date: July 27, 2017
    Applicant: GreenFire Energy Inc
    Inventors: Mark P. Muir, Alan D. Eastman, Randy N. Balik, John R. Muir
  • Publication number: 20170130703
    Abstract: Tiered or stacked geothermal loop energy systems may include closed-loop pipe systems disposed within a heat producing geologic formation. The pipe systems are emplaced in wellbores drilled so as to efficiently and effectively take advantage of localized formation properties.
    Type: Application
    Filed: June 12, 2015
    Publication date: May 11, 2017
    Applicant: GreenFire Energy Inc
    Inventors: Mark P. Muir, Alan D. Eastman
  • Patent number: 8247212
    Abstract: The present invention provides a method of circulating algae in growing containers using thermally-induced convection techniques. In particular, a method of growing algae by providing a thermal gradient in algae containing medium is disclosed.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: August 21, 2012
    Assignee: Greenfire Partners LLC
    Inventors: Mark P. Muir, Alan D. Eastman, Randy Balik
  • Publication number: 20110100002
    Abstract: Methods and systems for extracting geothermal energy from an underground hot dry rock reservoir using supercritical carbon dioxide are disclosed. In a first step, the methods and systems utilize a heat exchanger in a binary system to heat a secondary fluid that is used to perform work. In a second step, the supercritical carbon dioxide is transferred to a pseudo turbine (e.g., a free-piston linear engine) to perform additional work through expansion.
    Type: Application
    Filed: November 2, 2010
    Publication date: May 5, 2011
    Applicant: GreenFire Partners LLC
    Inventors: John R. Muir, Alan D. Eastman, Mark P. Muir
  • Publication number: 20090098637
    Abstract: The present invention provides a method of circulating algae in growing containers using thermally-induced convection techniques. In particular, a method of growing algae by providing a thermal gradient in algae containing medium is disclosed.
    Type: Application
    Filed: August 11, 2008
    Publication date: April 16, 2009
    Inventors: Mark P. Muir, Alan D. Eastman, Randy Balik
  • Patent number: 7056744
    Abstract: A method of determining the proportion of short-chain branching in an olefin copolymer process stream is disclosed. The short-chain branching may also be determined as a function of molecular weight in a sample having a range of molecular weights. In the method, at least two olefin copolymer training samples are provided. The respective samples have different, known proportions of short-chain branching. The infrared (e.g. FT-IR) absorbance spectra of the training samples in a wavenumber range are obtained. Calibration information is determined from the training samples by chemometrically correlating the differences in the infrared absorbance spectra of the training samples to the differences in the degree of short-chain branching in the training samples. This step generates calibration information that allows the degree of short-chain branching in a sample to be determined once its infrared absorbance spectrum is obtained.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: June 6, 2006
    Assignee: Phillips Petroleum Company
    Inventors: Paul J. DesLauriers, David C. Rohlfing, Alan D. Eastman, Eric T. Hsieh
  • Publication number: 20040123518
    Abstract: Oxygenated hydrocarbon fuel compositions for use in internal combustion engines with naphtha, alcohol(s), and ether(s) with or without additives are disclosed. Combustion of the fuel compositions results in reduced pollution emissions compared to conventional gasoline and can cost must less than conventional gasoline with comparable or improved engine performance.
    Type: Application
    Filed: December 13, 2003
    Publication date: July 1, 2004
    Inventors: Alan D. Eastman, Quentin Jewett, Whitney D. Lund, Rocky Masa Hashimoto
  • Publication number: 20040033615
    Abstract: A method of determining the proportion of short-chain branching in an olefin copolymer process stream is disclosed. The short-chain branching may also be determined as a function of molecular weight in a sample having a range of molecular weights. In the method, at least two olefin copolymer training samples are provided. The respective samples have different, known proportions of short-chain branching. The infrared (e.g. FT-IR) absorbance spectra of the training samples in a wavenumber range are obtained. Calibration information is determined from the training samples by chemometrically correlating the differences in the infrared absorbance spectra of the training samples to the differences in the degree of short-chain branching in the training samples. This step generates calibration information that allows the degree of short-chain branching in a sample to be determined once its infrared absorbance spectrum is obtained.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 19, 2004
    Inventors: Paul J. DesLauriers, David C. Rohlfing, Alan D. Eastman, Eric T. Hsieh
  • Patent number: 6632680
    Abstract: A method of determining the proportion of short-chain branching in an olefin copolymer process stream is disclosed. The short-chain branching may also be determined as a function of molecular weight in a sample having a range of molecular weights. In the method, at least two olefin copolymer training samples are provided. The respective samples have different, known proportions of short-chain branching. The infrared (e.g. FT-IR) absorbance spectra of the training samples in a wavenumber range are obtained. Calibration information is determined from the training samples by chemometrically correlating the differences in the infrared absorbance spectra of the training samples to the differences in the degree of short-chain branching in the training samples. This step generates calibration information that allows the degree of short-chain branching in a sample to be determined once its infrared absorbance spectrum is obtained.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: October 14, 2003
    Inventors: Paul J. DesLauriers, David C. Rohlfing, Alan D. Eastman, Eric T. Hsieh
  • Patent number: 6294078
    Abstract: A process is provided by the invention which comprises: (a) providing a tubular reactor having an inlet and an outlet, a furnace for heating the reactor, and a cooler having an inlet in communication with the reactor outlet and also having an outlet; (b) introducing a substantially constant flow of feed gas comprising steam to the reactor inlet while the reactor is heated by the furnace to produce a predetermined and substantially constant reactor outlet temperature; and (c) controlling, during at least a portion of (b), the concentration of an antifoulant in the feed gas based on cooler outlet temperature.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: September 25, 2001
    Assignee: Chevron Phillips Chemical LP
    Inventors: Alan D. Eastman, Ronald E. Brown
  • Patent number: 6113774
    Abstract: A process is provided by the invention which comprises: (a) providing a tubular reactor having an inlet and an outlet, a furnace for heating the reactor, and a cooler having an inlet in communication with the reactor outlet and also having an outlet; (b) introducing a substantially constant flow of feed gas comprising steam to the reactor inlet while the reactor is heated by the furnace to produce a predetermined and substantially constant reactor outlet temperature; and (c) controlling, during at least a portion of (b), the concentration of an antifoulant in the feed gas based on cooler outlet temperature.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: September 5, 2000
    Assignee: Phillips Petroleum Company
    Inventors: Alan D. Eastman, Ronald E. Brown
  • Patent number: 5877382
    Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF (catalyzed alkylation reaction, from a fluid containing a sulfone compound. The process includes the use of hydrocarbons to remove ASO from the sulfone-containing fluid.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: March 2, 1999
    Assignee: Phillips Petroleum Company
    Inventor: Alan D. Eastman
  • Patent number: 5463162
    Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF catalyzed alkylation reaction, from a fluid containing a sulfone compound. The process includes the use of hydrocarbons to remove ASO from the sulfone-containing fluid.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: October 31, 1995
    Assignee: Phillips Petroleum Company
    Inventor: Alan D. Eastman
  • Patent number: 5405431
    Abstract: In a continuous adsorption process using dual towers for separation of a multi-component feed with one tower active and the other on regeneration, automatic switching of the tower feed based on loading of a hydrogen fluoride (HF) component in the active tower is achieved by inferring HF loading based on concentration measurement of acid soluble oil (ASO). An optimum switching point, which switches tower feed near full HF capacity of the active tower but before HF breakthrough occurs, is based on calculating a second derivative for a concentration vs. time curve of ASO in the active bed effluent.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: April 11, 1995
    Assignee: Phillips Petroleum Company
    Inventor: Alan D. Eastman
  • Patent number: 5347067
    Abstract: Described is a novel acid-soluble oil composition produced as a by-product from an alkylation reaction catalyzed by a sulfone-containing catalyst. Also described is a novel process for regenerating an alkylation catalyst which contains a sulfone component. The regeneration process utilizes alumina adsorbent to remove a substantial portion of the hydrogen halide from the spent catalyst, thereby producing a neutralized stream, which is then treated with carbon to remove a substantial portion of the reaction by-product to produce a sulfone stream substantially free of reaction by-product and hydrogen halide.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: September 13, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Alan D. Eastman, Ronald G. Abbott
  • Patent number: 5306859
    Abstract: Described is a novel process for regenerating an ASO contaminated alkylation catalyst containing a sulfone component and a hydrogen halide component. A sulfone-containing mixture containing ASO and which is derived by the removal of a major portion of the hydrogen halide component of the alkylation catalyst is contacted with a reversable base selected from the group consisting of polyvinyl pyridine, amine-substituted styrene divinyl benzene copolymer and mixtures thereof so as to remove at least a portion of the ASO component from the sulfone-containing mixture to thereby produce a treated sulfone-containing mixture. The treated sulfone-containing mixture can further be processed by contacting it with an absorbent material which can include carbon and alumina.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: April 26, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Alan D. Eastman, Ronald G. Abbott, Robert B. Eldridge