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Title: Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein

Abstract

An acoustic-wave sensor apparatus and method are disclosed. The apparatus for analyzing a normally liquid petroleum-based composition includes at least one acoustic-wave device in contact with the petroleum-based composition for sensing or detecting the presence of constituents (e.g. paraffins or petroleum waxes) therein which solidify upon cooling of the petroleum-based composition below a cloud-point temperature. The acoustic-wave device can be a thickness-shear-mode device (also termed a quartz crystal microbalance), a surface-acoustic-wave device, an acoustic-plate-mode device or a flexural plate-wave device. Embodiments of the present invention can be used for measuring a cloud point, a pour point and/or a freeze point of the petroleum-based composition, and for determining a temperature characteristic of each point. Furthermore, measurements with the acoustic-wave sensor apparatus can be made off-line by using a sample having a particular petroleum-based composition; or in-situ with the petroleum-based composition contained within a pipeline or storage tank. The acoustic-wave sensor apparatus has uses in many different petroleum technology areas, including the recovery, transport, storage, refining and use of petroleum and petroleum-based products. 7 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Sandia Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
527760
Patent Number(s):
5,661,233
Application Number:
PAN: 8-621,929
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 023000; PA: EDB-97:123970; SN: 97001843775
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 26 Aug 1997
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; PETROLEUM; ACOUSTIC TESTING; MEASURING INSTRUMENTS; ALKANES; WAXES; DETECTION; SOLIDIFICATION; SOUND WAVES

Citation Formats

Spates, J.J., Martin, S.J., and Mansure, A.J. Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein. United States: N. p., 1997. Web.
Spates, J.J., Martin, S.J., & Mansure, A.J. Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein. United States.
Spates, J.J., Martin, S.J., and Mansure, A.J. Tue . "Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein". United States.
@article{osti_527760,
title = {Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein},
author = {Spates, J.J. and Martin, S.J. and Mansure, A.J.},
abstractNote = {An acoustic-wave sensor apparatus and method are disclosed. The apparatus for analyzing a normally liquid petroleum-based composition includes at least one acoustic-wave device in contact with the petroleum-based composition for sensing or detecting the presence of constituents (e.g. paraffins or petroleum waxes) therein which solidify upon cooling of the petroleum-based composition below a cloud-point temperature. The acoustic-wave device can be a thickness-shear-mode device (also termed a quartz crystal microbalance), a surface-acoustic-wave device, an acoustic-plate-mode device or a flexural plate-wave device. Embodiments of the present invention can be used for measuring a cloud point, a pour point and/or a freeze point of the petroleum-based composition, and for determining a temperature characteristic of each point. Furthermore, measurements with the acoustic-wave sensor apparatus can be made off-line by using a sample having a particular petroleum-based composition; or in-situ with the petroleum-based composition contained within a pipeline or storage tank. The acoustic-wave sensor apparatus has uses in many different petroleum technology areas, including the recovery, transport, storage, refining and use of petroleum and petroleum-based products. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {8}
}