The measurement of slow neutrons with a proportional counter as a means of measuring saturation in laboratory flow experiments

dc.contributor.committeeMemberLong, Robert Warren
dc.contributor.committeeMemberMcElrath, Eby N.
dc.contributor.committeeMemberGrover, Leon T.
dc.creatorBrook, Arthur Hubert
dc.description.abstractFor many years a need has existed within the petroleum industry for a method of measuring oil saturations in a porous medium in which flow experiments are being conducted involving flow of gas and oil within the medium. Such a method should be able to measure saturation without disturbing flow patterns and should perform satisfactorily at elevated pressures which more nearly simulate reservoir conditions. The use of neutron moderation as a method for determining oil saturation is not new. Brunner and Mardock used this method when they activated rhodium plates with slowed neutrons and then counted the induced beta activity of the plates. In the present work the method of detection has been changed to simplify the operation and improve the counting rate. The rhodium plates have been replaced by a boron trifluoride proportional counter, and counts may be taken directly (thus avoiding the loss of any activity during the time previously required for transporting the plates from the point of activation to the counting location). The other existing methods used to measure saturation, such as resistivity, X-ray absorption, and internal tracers are reviewed, and the relative merits of each system are considered. Reasons for adopting neutron moderation are presented as well as reasons for adopting the simpler system of counting slowed neutrons instead of the induced beta activity used by Brunner and Mardock. The accuracy of data, obtained at two positions on a flow system, is evaluated and is found to be within 5 percent throughout the range of saturation. A saturation detector with such accuracy will find use in many of the-flow-experiments being conducted today. In particular, relative permeability measurements can be improved and extended to cover reservoir conditions with this device.
dc.description.departmentPhysics, Department of
dc.format.digitalOriginreformatted digital
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleThe measurement of slow neutrons with a proportional counter as a means of measuring saturation in laboratory flow experiments
dcterms.accessRightsThe full text of this item is not available at this time because it contains documents that are presumed to be under copyright and are accessible only to users who have an active CougarNet ID. This item will continue to be made available through interlibrary loan. of Arts and Sciences, Department of of Houston of Science


Original bundle

Now showing 1 - 1 of 1
No Thumbnail Available
982.58 KB
Adobe Portable Document Format