Patents by Inventor Timothy K. Ellison

Timothy K. Ellison 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: 11428079
    Abstract: A method and systems for sand control in wells are described in examples. An example uses a prepack screen assembly comprising an inner screen comprising openings having an inner size and an outer screen comprising openings having an outer size. Packing material is disposed between the inner screen and the outer screen comprising pores with a pore size that is selected based, at least in part, on the outer size, the inner size, or both.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: August 30, 2022
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Charles S. Yeh, Timothy K. Ellison, Tracy J. Moffett, Michael D. Barry, Andy J. Veselka, Elizabeth L. Templeton-Barrett
  • Publication number: 20200378219
    Abstract: A method and systems for sand control in wells are described in examples. An example uses a prepack screen assembly comprising an inner screen comprising openings having an inner size and an outer screen comprising openings having an outer size. Packing material is disposed between the inner screen and the outer screen comprising pores with a pore size that is selected based, at least in part, on the outer size, the inner size, or both.
    Type: Application
    Filed: April 22, 2020
    Publication date: December 3, 2020
    Inventors: Charles S. Yeh, Timothy K. Ellison, Tracy J. Moffett, Michael D. Barry, Andy J. Veselka, Elizabeth L. Templeton-Barrett
  • Patent number: 10533414
    Abstract: A system and method is provided for enhancing hydrocarbon production. The method and system involve geochemistry analysis and include multiply substituted isotopologue and position specific isotope geochemistry for at least one hydrocarbon compound of interest associated with free gas and sorbed gas. The method and system involve using clumped isotope and position specific isotope signatures to enhance monitoring of well and stimulation performance.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: January 14, 2020
    Inventors: Michael Lawson, Brian K. Peterson, Cara L. Davis, David R. Converse, Timothy K. Ellison, John Eiler
  • Patent number: 10415379
    Abstract: A system and method is provided for enhancing hydrocarbon production. The method and system involve geochemistry analysis and include multiply substituted isotopolog and position specific isotope geochemistry. The method and system involve using clumped isotope and position specific isotope signatures to enhance monitoring of well and stimulation performance.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: September 17, 2019
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Michael Lawson, Brian K. Peterson, Cara L. Davis, David R. Converse, Timothy K. Ellison
  • Publication number: 20160222781
    Abstract: A system and method is provided for enhancing hydrocarbon production. The method and system involve geochemistry analysis and include multiply substituted isotopologue and position specific isotope geochemistry. The method and system involve using clumped isotope and position specific isotope signatures to enhance monitoring of well and stimulation performance.
    Type: Application
    Filed: January 13, 2016
    Publication date: August 4, 2016
    Inventors: Michael Lawson, Brian K. Peterson, Cara L. Davis, David R. Converse, Timothy K. Ellison
  • Publication number: 20160222782
    Abstract: A system and method is provided for enhancing hydrocarbon production. The method and system involve geochemistry analysis and include multiply substituted isotopologue and position specific isotope geochemistry for at least one hydrocarbon compound of interest associated with free gas and sorbed gas. The method and system involve using clumped isotope and position specific isotope signatures to enhance monitoring of well and stimulation performance.
    Type: Application
    Filed: January 13, 2016
    Publication date: August 4, 2016
    Inventors: Michael Lawson, Brian K. Peterson, Cara L. Davis, David R. Converse, Timothy K. Ellison, John Eiler
  • Patent number: 9305121
    Abstract: Method and systems for modeling fractures in quasi-brittle materials are provided. An exemplary method included generating a model that incorporates a unified creep-plasticity (UCP) representation into a constitutive model for a ductile rock. The model may be used in a finite element analysis to model hydraulic fractures in the ductile rock.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 5, 2016
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Yao Yao, Shekhar V. Gosavi, Kevin H. Searles, Timothy K. Ellison
  • Patent number: 8914268
    Abstract: Methods and systems for making decisions related to the operation of a hydrocarbon well include characterizing effective production capacity of a reservoir over space and time based at least in part on a reservoir potential and a near-well capacity; determining an optimized well potential over space and time relative to the characterized effective production capacity using a well model of a simulated well accessing the reservoir, which may be determined based at least in part on an objective function that considers at least one of a plurality of decision-making factors, such as one or more of operations costs, operational risks, and modeled production rates over the life of the well; and determining at least one well operating plan component that can be incorporated into a well operating plan to provide the optimized well potential in a well accessing the reservoir.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: December 16, 2014
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Bruce A. Dale, Timothy K. Ellison, Dieter Postl, Dar-Lon Chang, Jennifer Hommema
  • Publication number: 20130090902
    Abstract: Method and systems for modeling fractures in quasi-brittle materials are provided. An exemplary method included generating a model that incorporates a unified creep-plasticity (UCP) representation into a constitutive model for a ductile rock. The model may be used in a finite element analysis to model hydraulic fractures in the ductile rock.
    Type: Application
    Filed: April 11, 2011
    Publication date: April 11, 2013
    Inventors: Yao Yao, Shekhar V. Gosavi, Kevin H. Searles, Timothy K. Ellison
  • Patent number: 8190414
    Abstract: A method for modeling a reservoir response in a subsurface system is provided. The subsurface system has at least one subsurface feature. Preferably, the subsurface system comprises a hydrocarbon reservoir. The method includes defining physical boundaries for the subsurface system, and locating the at least one subsurface feature within the physical boundaries. The method also includes creating a finite element mesh within the physical boundaries. The finite element mesh may have elements that cross the at least one subsurface feature such that the subsurface feature intersects elements in the mesh. A computer-based numerical simulation is then performed wherein the effects of the subsurface feature are recognized in the response. The reservoir response may be, for example, pore pressure or displacement at a given location within the physical boundaries.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: May 29, 2012
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Hao Huang, Jing Wan, Marcus Asmann, Bruce A. Dale, Timothy K. Ellison, Sheng-Yuan Hsu
  • Publication number: 20110246163
    Abstract: Methods and systems for making decisions related to the operation of a hydrocarbon well include 1) characterizing effective production capacity of a reservoir over space and time based at least in part on a reservoir potential and a near-well capacity; 2) determining an optimized well potential over space and time relative to the characterized effective production capacity using a well model of a simulated well accessing the reservoir; and 3) determining at least one well operating plan component that can be incorporated into a well operating plan to provide the optimized well potential in a well accessing the reservoir. The optimized well potential may be determined based at least in part on an objective function that considers at least one of a plurality of decision-making factors, such as one or more of operations costs, operational risks, and modeled production rates over the life of the well.
    Type: Application
    Filed: January 5, 2010
    Publication date: October 6, 2011
    Inventors: Bruce A. Dale, Timothy K. Ellison, Dieter Postl, Dar-Lon Chang, Jennifer A. Hommema
  • Publication number: 20090248374
    Abstract: A method for modeling a reservoir response in a subsurface system is provided. The subsurface system has at least one subsurface feature. Preferably, the subsurface system comprises a hydrocarbon reservoir. The method includes defining physical boundaries for the subsurface system, and locating the at least one subsurface feature within the physical boundaries. The method also includes creating a finite element mesh within the physical boundaries. The finite element mesh may have elements that cross the at least one subsurface feature such that the subsurface feature intersects elements in the mesh. A computer-based numerical simulation is then performed wherein the effects of the subsurface feature are recognized in the response. The reservoir response may be, for example, pore pressure or displacement at a given location within the physical boundaries.
    Type: Application
    Filed: February 6, 2009
    Publication date: October 1, 2009
    Inventors: Hao Huang, Jing Wan, Marcus Asmann, Bruce A. Dale, Timothy K. Ellison, Sheng-Yuan Hsu