Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Reexamination Certificate
2006-06-06
2010-11-09
Lobo, Ian J (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
C367S032000
Reexamination Certificate
active
07830744
ABSTRACT:
Method for determining reservoir permeability from Stoneley wave attenuation extracted from conventional sonic logs by inversion of the full Biot wave equations for a porous medium. Frequency-dependent Stoneley-wave attenuation is extracted by analyzing array sonic measurements. Then, based on Biot's full theory applied to a borehole model and the standard logs (gamma ray, caliper, density, neutron, resistivity, sonic, etc.), a simulation model with the same parameters as the Stoneley-wave measurements is built. Next, a theoretical Stoneley-wave attenuation is computed for a given permeability. Finally, reservoir permeability is determined by comparing the modeled Stoneley-wave attenuation with the measured Stoneley-wave attenuation by an iterative inversion process.
REFERENCES:
patent: 4432077 (1984-02-01), Alhilali et al.
patent: 4797859 (1989-01-01), Hornby
patent: 4964101 (1990-10-01), Liu et al.
patent: 5616840 (1997-04-01), Tang
patent: 5687138 (1997-11-01), Kimball et al.
patent: 5784333 (1998-07-01), Tang et al.
patent: 5841280 (1998-11-01), Yu et al.
patent: 5999484 (1999-12-01), Kimball et al.
patent: 6327538 (2001-12-01), Chin
patent: 6415648 (2002-07-01), Peeters
patent: 2005/0065730 (2005-03-01), Sinha
patent: 2005/0149267 (2005-07-01), Van Den Beukel et al.
Biot, M. A. (1956) “Theory of Propagation of Elastic Waves in a Fluid-Saturated Porous Solid. I. Low-Frequency Range,”Jornl. of Acoustical Soc. of Amer., v.28.2, Mar. 1956, pp. 168-178.
Burns, D. R. et al. (1986) “Determination of In-Situ Permeability From Tube Wave Velocity and Attenuation,”SPWLA 27th Annual Logging Symposium, Paper KK, 16 pages.
Cassell, B. et al. (1994) “Permeability Prediction Based on Anelastic Attenuation Using Dipole and Low Frequency Monopole Sources in a Carbonate Reservoir in Saudi Arabia,” presented at theCEO-94 Middle East Geoscience Exhibition&Conference, Bahrain, Apr. 25-27, 11 pages.
Gassmann, F. (1951) “On Elasticity of Porous Media,”Vierteljahrsschr. Naturforsch. Ges., Zurich, 96, version translated in 1998, 21 pages.
Hsui, A. T. et al. (1985) “Tube Wave Attenuation and In-Situ Permeability,” theSPWLA 26th Annual Logging Symposium, Paper CC, 12 pages.
Kimball, et al. (1986) “Semblance of Processing of Borehole Acoustic Array Data,”Geophysics, v.49, pp. 274-281.
Liu, H.-L. et al. (1997) “Effects of an Elastic Membrane on Tube Waves in Permeable Formations,”J. Acoust. Soc. Am. v.101, pp. 3322-3329.
Norris (1990) “Stonely-Wave Attenuation and Dispersion in Permeable Formations,”Geophysics, v.59, pp. 330-341.
Rosenbaum, J. (1974) “Synthetic Microseismograms: Logging in a Porous Formation,”Geophysicsv.39.1, pp. 14-32.
Schmitt, D. P. (1988) “Effects of Radial Layering When Logging in Saturated Porous Formations,”J. Acoust. Soc. Am. v.84.6, pp. 2200-2214.
Tang, X.M. et al. (1991) “Dynamic Permeability and Borehole Stoneley-Waves: A Simplified Biot-Rosenbaum Model,”J. Acoust. Soc. Am. v.90.3, pp. 1632-1646.
Tang, X. (2003) Determining Formation Shear-Wave Transverse Isotropy From Borehole Stoneley-Wave Measurements,Geophysics, v.68.1, pp. 118-126.
Tang, X. M. et al. (2004)Quantitative Borehole Acoustic Methods, Elsevier, p. 150.
White, (1983) “Underground Sound: Application of Seismic Waves,”Methods in Geochemistry and Geophysics, Elsevier, Amsterdam, pp. 151-154.
Cheng et al. (1987) “Effects of in-situ permeability on propagation of Stoneley waves in a borehole”,Geophysics52, pp. 1279-1289.
Cheng, et al. (1982) “Determination of In Situ Attenuation from Full Waveform Acoustic Logs,”J. Geophy. Res., v. 87, pp. 5477-5484.
Hsui et al. (1986) “Application of an Acoustic Model to Determine In-Situ Permeability of a Borehole,”J. Acoust. Soc. Am. 70, Jun. 1986.
Johnson, D. L. (1998) “Nonlinear Pulse Propagation in Arbitrarily Dispersive Media: Tube Waves in Permeable Formations,”J. Acoust. Soc. Am., 105(6), Jun. 1999, pp. 3087-3096.
Schmitt, D. et al. (1988) “Full-Wave Synthetic Acoustic Logs in Radially Semiinfinite Saturated Porous Media,”Geophysics, 53(6), pp. 807-823.
Tang et al. (1996) “Fast Inversion of Formation Permeability from Stoneley Wave Logs Using a Simplified Biot-Rosenbaum Model,”Geophysics, May-Jun. 1996.
Winkler, et al., (1989) “Permeability and borehole Stoneley waves: Comparison between experiment and theory,”Geophysics54, pp. 66-75.
EP Search Report No. RS 112971US dated Feb. 1, 2006, 2 pages.
Wu Xianyun
Yin Hezhu
ExxonMobil Upstream Research Co.
Lobo Ian J
LandOfFree
Method for determining reservoir permeability form borehole... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for determining reservoir permeability form borehole..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining reservoir permeability form borehole... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4211565