US 12,221,886 B2
Attenuated total internal reflection optical sensor for obtaining downhole fluid properties
Sandip Maity, Manama (BH); Otto Fanini, Houston, TX (US); Dwight Swett, Houston, TX (US); Rocco DiFoggio, Houston, TX (US); Mohamed Nabil Noui-Mehidi, Dhahran (SA); and Jana Mohamed Aljindan, Dammam (SA)
Assigned to BAKER HUGHES OILFIELD OPERATIONS LLC, Houston, TX (US); and SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Apr. 24, 2023, as Appl. No. 18/138,451.
Application 18/138,451 is a division of application No. 16/868,094, filed on May 6, 2020, granted, now 11,661,845.
Claims priority of provisional application 62/846,548, filed on May 10, 2019.
Prior Publication US 2023/0296019 A1, Sep. 21, 2023
Int. Cl. E21B 49/10 (2006.01); G01N 21/552 (2014.01); G01N 21/64 (2006.01); G01N 29/036 (2006.01); E21B 49/08 (2006.01); G01N 21/85 (2006.01)
CPC E21B 49/10 (2013.01) [G01N 21/552 (2013.01); G01N 21/645 (2013.01); G01N 29/036 (2013.01); E21B 49/0875 (2020.05); G01N 2021/8528 (2013.01); G01N 2021/855 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a first light source configured to emit first light comprising a plurality of wavelengths;
a second light source configured to emit second light comprising infrared light;
a first aspheric lens, wherein the first light travels through the first aspheric lens;
a second aspheric lens, wherein the second light travels through the second aspheric lens;
a beam combiner, wherein the first light and the second light are combined into a single beam of source light; and
a beam splitter, wherein the single beam of source light travels through the beam splitter.