Metal cup pressure transducer with a support having a plurality

Details Metal cup pressure transducer with a support having a plurality Metal cup pressure transducer with a support having a plurality

1993-06-29

1994-05-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023119, 356358, H01J 516

Patent

active

053151100

ABSTRACT:
An optical interferometer is provided for measuring downhole pressures by detecting a distance across a gap of an optical transmission pathway. The optical interferometer includes a pressure responsive member which, in response to downhole wellbore pressures, alters the distance between a light reflector and a lens. A partially reflective coating is deposited upon the pressure responsive member, which provides the light reflector, and the lens. The optical interferometer further includes a plurality of support members for the lens, with at least one of the plurality of support members having a different coefficient of thermal expansion from another support member so that when heated to downhole temperatures, thermal expansion of the support members will result in mutually offsetting displacements so that thermal expansion of the support members will not affect the gap over a range of downhole wellbore temperatures.

REFERENCES:
patent: 4682500 (1987-07-01), Uda
patent: 4859844 (1989-08-01), Herman et al.
patent: 4868381 (1989-09-01), Davis
patent: 4873989 (1989-10-01), Einzig
patent: 4897542 (1990-01-01), Dakin et al.
patent: 4904863 (1990-02-01), McDearmon
patent: 4944187 (1990-07-01), Frick et al.
patent: 5073004 (1991-12-01), Clayton et al.
patent: 5094534 (1992-03-01), Cole et al.
patent: 5095517 (1992-03-01), Monguzzi et al.
patent: 5113070 (1992-05-01), Smith
patent: 5247490 (1993-09-01), Goepel et al.

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