Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-10-23
1994-06-28
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250574, 25022716, 25023119, 356338, G01N 1506
Patent
active
053249569
ABSTRACT:
A system for characterizing the pressure, temperature, movement and flow patterns of a fluid under high pressure within a test cell. The test cell is lined internally with adjustable rock facings. Pressure is measured within the test cell using a device employing pressure-distortable optical fibers. Fluid velocity, flow direction, and filter-cake buildup are measured with laser Doppler velocimetry. The flow pattern of the fluid is viewed using corresponding arrays of transmitting and receiving optical fibers. Temperature of the fluid is estimated using a combination of thermal sensors. The pressure, velocity, viewing and temperature systems are integral to the rock facings of the test cell.
REFERENCES:
patent: 4373807 (1983-02-01), Gouesbet
patent: 4441816 (1984-04-01), Hencken et al.
J. W. Berthold, W. L. Ghering, and D. Varshneya, "Design and Characterization of a High Temperature Fiber-Optic Pressure Transudcer", Journal of Lightwave Technology, vol. LT-5, No. 7, Jul. 1987, pp. 870-875.
Beason Ronnie B.
Fagan John E.
Hassell John W.
Mears R. Brian
Sluss, Jr. James J.
Davenport T.
Gas Research Institute
Westin Edward P.
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