Patents by Inventor Keith Howarth Greaves

Keith Howarth Greaves 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: 10156507
    Abstract: A method of characterizing free volume of a rock sample includes test operations that measure pressure decay data from stepwise pressurization of the rock sample with a test gas. An initial free volume of the rock sample is calculated as a function of the pressure decay data. An initial maximum storage capacity of the rock sample is derived as a function of the initial free volume of the rock sample. A volume of test gas adsorbed as a liquid is calculated based on the maximum storage capacity of the rock sample. An updated free volume of the rock sample is calculated based on the initial free volume and the volume of the test gas adsorbed as a liquid. An updated maximum storage capacity of the rock sample is derived as a function of the updated free volume.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: December 18, 2018
    Assignee: Schlumberger Technology Corporation
    Inventors: Benjamin Howard Davidson, Keith Howarth Greaves, David Clark Atwood, Robert Michael Griffin
  • Publication number: 20160290907
    Abstract: A method of characterizing free volume of a rock sample includes test operations that measure pressure decay data from stepwise pressurization of the rock sample with a test gas. An initial free volume of the rock sample is calculated as a function of the pressure decay data. An initial maximum storage capacity of the rock sample is derived as a function of the initial free volume of the rock sample. A volume of test gas adsorbed as a liquid is calculated based on the maximum storage capacity of the rock sample. An updated free volume of the rock sample is calculated based on the initial free volume and the volume of the test gas adsorbed as a liquid. An updated maximum storage capacity of the rock sample is derived as a function of the updated free volume.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 6, 2016
    Inventors: Benjamin Howard Davidson, Keith Howarth Greaves, David Clark Atwood, Robert Michael Griffin
  • Publication number: 20080162056
    Abstract: A computer implemented method, apparatus, and computer program product for predicting initial gas production in a well. A cumulative amount of each gas species present in a gas sample taken from the well is identified. A set of data points corresponding to the cumulative amount of each gas species present in a gas sample for each gas species is generated. A Y-intercept value for each gas species is calculated based on the set of data points. A projected initial amount of the given gas species produced from the well is presented. The projected initial amount of the given gas species produced from the well is determined using the Y-intercept value. The Y-intercept value indicates a cumulative amount of gas for a given gas species.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Inventor: Keith Howarth Greaves