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US 8,912,000 B2Granted
Downhole mass spectrometric hydrocarbon determination in presence of electron and chemical ionization
AssigneeSchlumberger Technology Corporation
InventorsPierre J. Daniel, Julian J. Pop, Reza Taherian, Bruno Drochon
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Abstract
Methods and apparatus for obtaining a mass spectrum of a sample and determining a concentration of a component of the sample by utilizing a model of chemical and electron ionization and the obtained mass spectrum.
Claims20
A method, comprising:
- conveying a downhole tool in a borehole penetrating a subterranean formation;
- obtaining, using the downhole tool while the downhole tool is positioned downhole, a mass spectrum of a sample subject to a combined chemical and electron ionization process;
- and
- determining a concentration of a component of the sample by utilizing a chemical and electron ionization model and the obtained mass spectrum.
1 more element
The method of clam 1 wherein the sample is obtained downhole from a drilling fluid sampled from within a drill string proximate the downhole tool.
Dependencies are inferred from the claim text.