In Situ Methane Determination in Petroleum at High Temperatures and High Pressures with Multivariate Optical Computing
Title
In Situ Methane Determination in Petroleum at High Temperatures and High Pressures with Multivariate Optical Computing
Subject
Crude oil
Methane
Gasoline
Regression analysis
Least squares approximations
Fourier transform infrared spectroscopy
Optical data processing
Description
Multivariate optical computing (MOC) is a compressed sensing technique enabling the measurement of analytes in a complex interfering mixture under harsh conditions. In this work, we describe the design, modeling, fabrication, and validation of a sensor for the measurement of dissolved methane in petroleum crude oil at high and variable combinations of pressure (up to 82.727 MPa) and temperature (up to 121.1 C). Both laboratory and field validation results are presented, with five separate MOC sensors yielding a RMS error of 0.0089 g/cm3 methane in high pressure/high temperature laboratory and field samples compared to 0.0086 g/cm3 methane for a room temperature laboratory Fourier transform infrared (FTIR) spectrometer using partial least-squares (PLS) regression models. 2019 American Chemical Society.
Publisher
Analytical Chemistry
Date
2019
Contributor
Jones, Christopher M.
Price, James
Dai, Bin
Li, Jian
Perkins, David L.
Myrick, Michael L.
Type
journalArticle
Identifier
32700
10.1021/acs.analchem.9b03715
Collection
Citation
“In Situ Methane Determination in Petroleum at High Temperatures and High Pressures with Multivariate Optical Computing,” Lamar University Midstream Center Research, accessed May 18, 2024, https://lumc.omeka.net/items/show/24204.