Borehole acoustic waves

Oilfield Review

Volumn 18, Issue 1, 2006, Pages 34-43

  Haldorsen, Jakob B U ^a   Johnson, David Linton ^a   Plona, Tom ^a   Sinha, Bikash ^a   Valero, Henri Pierre ^a   Winkler, Kenneth ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC RECEIVERS; ACOUSTIC WAVE VELOCITY; ACOUSTIC WAVES; RAY TRACING; ROCKS; TRANSMITTERS;

BOREHOLE FLUIDS; SHEAR DISTURBANCE; SONIC-TOOL DESIGN; STONELEY WAVE;

BOREHOLES;

EID: 33745631221     PISSN: 09231730     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (30)

1. A homogeneous formation is one with uniform velocity. In other words, the velocity is independent of location. An isotropic formation is one with velocity independent of direction of propagation.
2. The head wave has a conical wavefront in 3D.
3. Slowness typically has units of μs/ft.
4. Strutt JW, 3rd Baron Rayleigh: "On Waves Propagated Along the Plane Surface of an Elastic Solid," Proceedings of the London Mathematical Society 17 (1885): 4.
5. Rayleigh waves on the Earth's surface have vertical and horizontal components of motion. Other surface waves discovered by A.E.H. Love have two horizontal motion components.
6. Stoneley R: "Elastic Waves at the Surface of Separation of Two Solids," Proceedings of the Royal Society, Series A 106 (1924): 416-428.
7. Scholte JG: "On the Large Displacements Commonly Regarded as Caused by Love Waves and Similar Dispersive Surface Waves," Proceedings of the Koninklijke Nederlanse Akademie van Wetenschappen 51 (1948): 533-543.
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9. Winkler KW, Liu HL and Johnson DJ: "Permeability and Borehole Stoneley Waves: Comparison Between Experiment and Theory," Geophysics 54, no. 1 (January 1989): 66-75.
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11. Kimball CV and Marietta TL: "Semblance Processing of Borehole Acoustic Array Data," Geophysics 49, no. 3 (March 1984): 274-281.
12. Kimball CV: "Shear Slowness Measurement by Dispersive Processing of the Borehole Flexural Mode," Geophysics 63, no. 2 (March-April 1998): 337-344.
13. Murray D, Plona T and Valero H-P: "Case Study of Borehole Sonic Dispersion Curve Analysis," Transactions of the SPWLA 45th Annual Logging Symposium, June 6-9, 2004, Noordwijk, The Netherlands, paper BB.
14. The key parameters required for dispersion-curve modeling are formation slowness, formation density, borehole-fluid velocity, borehole-fluid density and borehole diameter.
15. Sinha BK and Zeroug S: "Geophysical Prospecting Using Sonics and Ultrasonics," in Webster JG (ed): Wiley Encyclopedia of Electrical and Electronic Engineers Vol. 8. New York City: John Wiley and Sons, Inc. (1999): 340-365.
16. This holds for alignments on scales that are smaller than the wavelength of the waves in question.
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18. Offline is sometimes referred to as crossline.
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22. Esmersoy C, Koster K, Williams M, Boyd A and Kane M: "Dipole Shear Anisotropy Logging," Expanded Abstracts, 64th SEG Annual International Meeting, Los Angeles (October 23-28, 1994): 1139-1142.
23. Kimball and Marzetta, reference 10.
24. Winkler KW, Sinha BK and Plona TJ: "Effects of Borehole Stress Concentrations on Dipole Anisotropy Measurements," Geophysics 63, no. 1 (January-February 1998): 11-17.
25. Winkler KW: "Acoustic Evidence of Mechanical Damage Surrounding Stressed Borehole," Geophysics 62, no. 1 (January-February 1997): 16-22.
26. Zeroug S, Valero H-P and Bose S: "Monopole Radial Profiling of Compressional Slowness," prepared for presentation at the 76th SEG Annual International Meeting, New Orleans, October 1-3, 2006.
27. Sinha B, Vissapragada B, Kisra S, Sunaga S, Yamamoto H, Endo T, Valero HP, Renlie L and Bang J: "Optimal Well Completions Using Radial Profiling of Formation Shear Slownesses," paper SPE 95837, presented at the SPE Annual Technical Conference and Exhibition, Dallas, October 9-12, 2005.
28. Sinha BK: "Near-Wellbore Characterization Using Radial Profiles of Shear Slownesses," Expanded Abstracts, 74th SEG Annual International Meeting, Denver (October 10-15, 2004): 326-329.
29. Chang C, Hoyle D, Watanabe S, Coates R, Kane R, Dodds K, Esmersoy C and Foreman J: "Localized Maps of the Subsurface," Oilfield Review 10, no. 1 (Spring 1998): 56-66.
30. Hornby BE: "Imaging of Near-Borehole Structure Using Full-Waveform Sonic Data," Geophysics 54, no. 6 (June 1989): 747-757.