Methods and apparatus for estimating a downhole fluid property

Optics: measuring and testing – For light transmission or absorption

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

08068226

ABSTRACT:
Apparatus and method for estimating a downhole fluid property using a carrier conveyable into a well borehole, one or more light sources carried by the carrier, the one or more light sources comprising at least one quantum cascade laser light source, a fluid sample cell that receives light emitted from the one or more light sources, and at least one photodetector that detects light emitted from the one or more light sources after the light interacts with a fluid in the fluid sample cell.

REFERENCES:
patent: 5303775 (1994-04-01), Michaels et al.
patent: 6995360 (2006-02-01), Jones et al.
patent: 7025138 (2006-04-01), Kurkjian et al.
patent: 7490664 (2009-02-01), Skinner et al.
patent: 2007/0081157 (2007-04-01), Csutak et al.
Borri, S. et al., Frequency modulation spectroscopy by means of quantum-cascade lasers, Applied Physics B—Lasers and Optics, Jul. 7, 2006, pp. 223-229, 85 (2006), Springer-Verlang 2006.
Friedrich, A. et al., High-temperature (T=490 K) operation of 5.8 um quantum cascade lasers with InP/GaInAs waveguides, Electronics Letters, Oct. 28, 2004, vol. 40 No. 22, IEE 2004.
Hofstetter, Daniel et al., High-temperature operation of distributed feedback quantum-cascade lasers at 5.3 um, Applied Physics Letter, Jan. 23, 2001, pp. 396-398, vol. 78 No. 4, American Institute of Physics 2001.
Lee, Benjamin G. et al., Broadly Tunable Single-Mode Quantum Cascade Laser Source, 2007 Optical Society of America.
Lee et al, “Widely turnable single-mode quantum cascade laser source for mid-infrared spectroscopy,” Appl. Phys. Lett., vol. 91 No. 23, Article 23101, Dec. 3, 2007, 3 pages.
Xie et al., “Nonlinear Optics with Quantum Cascade Lasers,” Laser Physics, vol. 17, No. 5, pp. 672-679, May 2007, 8 pages.
International Searching Authority, International Search Report, International Application No. PCT/US 09/30893, mailing date Jul. 17, 2009, 3 pages.
International Searching Authority, Written Opinion, International Application No. PCT/US 09/30893, mailing date Jul. 17, 2009, 5 pages.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods and apparatus for estimating a downhole fluid property does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for estimating a downhole fluid property, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for estimating a downhole fluid property will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4300057

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.