The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2002
Filed:
Apr. 13, 2000
Charles R. Winston, Glastonbury, CT (US);
Daniel L. Gysling, Glastonbury, CT (US);
Mark R. Myers, Storrs, CT (US);
Alan D. Kersey, S. Glastonbury, CT (US);
Rebecca S. McGuinn, Middletown, CT (US);
CiDRA Corporation, Wallingford, CT (US);
Abstract
A DC pressure and temperature sensor system for sensing and measuring the DC pressure and temperature of a production fluid (such as oil, gas and water mixtures) in tubing, such as tubing used to extract production fluid from a drilled site. The sensor system includes at least one fluid sensor, but sometimes two. Only one is needed if either the DC pressure or temperature of the production fluid (but not both) is provided by an independent measurement. In general, though, the sensor system includes: a first and second fluid sensor, the first using a first sensing material, and the second using a second sensing material in which sound travels at a rate that depends on the DC pressure and temperature of the second sensing material in a measurably different way than for the first sensing material. Each sensing material is coupled to the production fluid, preferably via a thin-walled membrane, so as to be at a DC pressure and temperature that is, preferably, the same as for the production fluid. Each fluid sensor is used to provide information about the speed of sound in its sensing material, and since the speed of sound depends on the DC pressure and temperature of the sensing material, in providing information about the speed of sound, each fluid sensor also provides information about the DC pressure and temperature of the sensing material, which is either the same as that of the production fluid or can be correlated to that of the production fluid.