US 12,241,842 B2
Optical spectra reconstruction based on optical measurements of downhole fluids
Zhonghuan Chen, Singapore (SG); and Bin Dai, Katy, TX (US)
Assigned to HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Sep. 9, 2022, as Appl. No. 17/941,144.
Prior Publication US 2024/0085341 A1, Mar. 14, 2024
Int. Cl. G01N 21/85 (2006.01)
CPC G01N 21/8507 (2013.01) [G01N 2021/8571 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining, from a subsurface optical measurement device, a plurality of optical data measurements associated with a subsurface fluid;
performing a comparison of the plurality of optical data measurements associated with the subsurface fluid to one or more sets of optical data stored in an optical data library and one or more sets of data stored in a spectral library, wherein the one or more sets of optical data correspond to a plurality of different fluid samples;
identifying, based on the comparison, a first fluid sample from the plurality of different fluid samples that corresponds to at least a portion of the subsurface fluid;
determining an absorbance spectrum of the subsurface fluid based on the first fluid sample using a matching pursuit algorithm; and
adjusting one or more drilling parameters based on the absorbance spectrum of the subsurface fluid.