Optical transducer and method for the simultaneous measurement of pressure and temperature in oil and gas wells

An optical transducer 100, 200 and method for the simultaneous measurement of downhole pressure and temperature in a single- or multi-point configuration including a body 10 a /10 b with an elastic membrane 50 onto which at least one Bragg grating 60 a /60 b is attached, and at least an additional B...

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Main Authors REGAZZI ROGERIO DIAS, FERREIRA LINCOLN HOMERO THOME, DOS SANTOS LORENZO JOAO LUIZ, DA SILVA JUNIOR MANOEL FELICIAN, FREITAS RICARDO MUNOZ, BARBOSA BRAGA ARTHUR MARTINS, ARIAS VIDAL JOSE LUIZ, GUEDES VALENTE LUIZ CARLOS, RIBEIRO ALEXANDRE SANT'ANNA
Format Patent
LanguageEnglish
Published 11.12.2007
Subjects
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Summary:An optical transducer 100, 200 and method for the simultaneous measurement of downhole pressure and temperature in a single- or multi-point configuration including a body 10 a /10 b with an elastic membrane 50 onto which at least one Bragg grating 60 a /60 b is attached, and at least an additional Bragg grating 60 b /60 a contained on the same optical fiber 30 . The elastic membrane 50 conveys strain proportional to the pressure and temperature conditions to which is submitted said transducer to at least one Bragg grating 60 a /60 b, the portion of light not reflected by the Bragg gratings 60 a , 60 b continues along the remaining of the optical fiber 30.
Bibliography:Application Number: US20050191243