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:
May. 19, 2026
Filed:
Jan. 03, 2024
Baker Hughes Oilfield Operations Llc, Houston, TX (US);
Rocco Difoggio, Houston, TX (US);
Baker Hughes Oilfield Operations LLC, Houston, TX (US);
Abstract
Fluid is sampled from a subterranean formation with a downhole tool from inside a wellbore intersecting the formation. The fluid is analyzed by a spectrometer inside the downhole tool. A light source in the spectrometer is pressure tuned to compensate for a change in wavelength of the output light due to a temperature change in the wellbore, and overlap with a compound of interest or analyte absorption band. The light source is in a fluid filled chamber, and a piezoelectric stack is in a cylinder that has an open end connected to the chamber. The fluid and the light source are selectively pressurized by expanding the piezoelectric stack at frequencies ranging up to at least around 1000 hertz. When pressurized, the output light wavelength is shifted to a range that coincides with a spectral response of a particular compound or compounds. The piezoelectric stack expands in response to electricity.