US 12,607,613 B2 · Gas chromatography calibration technique using linear ratios

Abstract

In general, in one aspect, embodiments relate to a method that includes varying at least a concentration of one or more components of a multi-component sample gas across at least a concentration range while introducing the multi-component sample gas into a gas chromatograph that includes one or more chromatographic columns, measuring concentrations of the one or more components with the gas chromatograph at a first calibration setting, determining one or more non-linearities of the measured concentrations at the first calibration setting, forming a second calibration setting based at least in part on the one or more non-linearities, and measuring concentrations of one or more components of another sample gas with the gas chromatograph at the second calibration setting.

Claims20

Dependent claims

A method comprising:

varying at least a concentration of one or more components of a multi-component sample gas across at least a concentration range while introducing the multi-component sample gas into a gas chromatograph comprising one or more chromatographic columns;
measuring concentrations of the one or more components with the gas chromatograph at a first calibration setting;
determining one or more non-linearities of the measured concentrations at the first calibration setting based at least in part on deviation of the linear ratios from a projected linear trend;
forming a second calibration setting based at least in part on the one or more non-linearities;
and
measuring concentrations of one or more components of another sample gas with the gas chromatograph at the second calibration setting.

3 more elements

A system comprising:

a wellbore extending into a subterranean formation;
a gas chromatograph configured to measure concentrations of one or more components of a multi-component sample gas at a calibration setting;
and
an information handling system communicatively coupled to the gas chromatograph,
wherein the calibration setting accounts for one or more non-linearities of the measured concentrations based at least in part on calibration data, the calibration data representing one or more results of one or more linear ratio tests.

2 more elements

Dependencies are inferred from the claim text.

Gas chromatography calibration technique using linear ratios

Life of this patent

Gas chromatography calibration technique using linear ratios

Life of this patent

Abstract

Claims20