CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING
ABSTRACT For traditional centrifugal capillary pressure curve measurements, a short core plug is often employed. The capillary pressure is assumed to be zero at the outflow boundary of the core. The traditional experiments are time consuming. Measurement of the full capillary pressure curve often re...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1072.481 2023-05-15T17:08:23+02:00 CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING Quan Chen Bruce J Balcom The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.481 http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.481 http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf text ftciteseerx 2020-04-26T00:24:19Z ABSTRACT For traditional centrifugal capillary pressure curve measurements, a short core plug is often employed. The capillary pressure is assumed to be zero at the outflow boundary of the core. The traditional experiments are time consuming. Measurement of the full capillary pressure curve often requires 7 to10 different centrifuge speeds, thus requiring one day to several days for measurement. Different approximate solutions may be employed to deduce the capillary pressure curve from experimental data of average saturation and the corresponding rotational speed. In the current work, we propose a new method to measure the capillary pressure curve using a single-moderate-speed centrifuge experiment and one dimensional centric scan SPRITE (Single-Point Ramped Imaging with T 1 Enhancement) magnetic resonance imaging (MRI) technique for long rock samples. As a pure phase encoding quantitative MRI technique, centric scan SPRITE offers unique advantages in the measurement of spatially resolved fluid saturation in rocks. The proposed method is rapid and accurate. Because the new method uses a long core to directly measure a large range of saturation distributions along the length of the core, at a single moderate centrifuge speed, this process will be much faster than a traditional measurement. There is no requirement for an approximate solution; the capillary pressure curve is directly determined by the measured saturation profile. Long cores can be employed, which leads to a smaller radial effect than short core plugs. Since a moderate centrifuge speed is employed, the effect of gravity will be very small and the outlet boundary condition of the core plug can be satisfied. A comparison of capillary pressure curves obtained by a single-speed centrifuge and SPRITE MRI with mercury intrusion methods yields remarkably consistent results. SCA2005-44 2/12 Text Long Rock Unknown Long Rock ENVELOPE(-61.198,-61.198,-62.689,-62.689) |
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ftciteseerx |
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English |
description |
ABSTRACT For traditional centrifugal capillary pressure curve measurements, a short core plug is often employed. The capillary pressure is assumed to be zero at the outflow boundary of the core. The traditional experiments are time consuming. Measurement of the full capillary pressure curve often requires 7 to10 different centrifuge speeds, thus requiring one day to several days for measurement. Different approximate solutions may be employed to deduce the capillary pressure curve from experimental data of average saturation and the corresponding rotational speed. In the current work, we propose a new method to measure the capillary pressure curve using a single-moderate-speed centrifuge experiment and one dimensional centric scan SPRITE (Single-Point Ramped Imaging with T 1 Enhancement) magnetic resonance imaging (MRI) technique for long rock samples. As a pure phase encoding quantitative MRI technique, centric scan SPRITE offers unique advantages in the measurement of spatially resolved fluid saturation in rocks. The proposed method is rapid and accurate. Because the new method uses a long core to directly measure a large range of saturation distributions along the length of the core, at a single moderate centrifuge speed, this process will be much faster than a traditional measurement. There is no requirement for an approximate solution; the capillary pressure curve is directly determined by the measured saturation profile. Long cores can be employed, which leads to a smaller radial effect than short core plugs. Since a moderate centrifuge speed is employed, the effect of gravity will be very small and the outlet boundary condition of the core plug can be satisfied. A comparison of capillary pressure curves obtained by a single-speed centrifuge and SPRITE MRI with mercury intrusion methods yields remarkably consistent results. SCA2005-44 2/12 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Quan Chen Bruce J Balcom |
spellingShingle |
Quan Chen Bruce J Balcom CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
author_facet |
Quan Chen Bruce J Balcom |
author_sort |
Quan Chen |
title |
CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
title_short |
CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
title_full |
CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
title_fullStr |
CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
title_full_unstemmed |
CALILLARY PRESSURE CURVE MEASUREMENT USING A SINGLE-MODERATE-SPEED CENTRIFUGE AND QUANTITATIVE MAGNETIC RESONANCE IMAGING |
title_sort |
calillary pressure curve measurement using a single-moderate-speed centrifuge and quantitative magnetic resonance imaging |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.481 http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf |
long_lat |
ENVELOPE(-61.198,-61.198,-62.689,-62.689) |
geographic |
Long Rock |
geographic_facet |
Long Rock |
genre |
Long Rock |
genre_facet |
Long Rock |
op_source |
http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.481 http://www.jgmaas.com/SCA/2005/SCA2005-44.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766064119615586304 |