1887
Volume 24, Issue 3-4
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

A crosshole data log has been recorded in a carbonate reservoir in the Permian Basin of west Texas. This log consists of traces at 3 m depth increments recorded from horizontally propagating waves between two wells spaced 304 m apart in a carbonate reservoir. Even at this long offset the recorded data contain frequencies up to the cutoff frequency of 3000 Hz. Using first arrival times, Vp, Vs, Vp/Vs, and Ap/As calculations were made. Vp and Vs values plotted on a “Pickett diagram” indicate a limestone or dolomite lithology. A plot of Vp/Vs and porosity from the receiver well shows an inverse correlation indicating that crosshole Vp/Vs has the potential for high resolution of lithological parameters. Amplitude (Ap/As) calculations from the crosshole log show two distinct zones. The zone of higher Ap/As values has been interpreted as a fluid-filled region.

Q values have been calculated from a set of high frequency crosshole data recorded in a shallow clastic sequence in an oil field in south Texas. A piezoelectric bender and a single hydrophone receiver were used to record data over a depth interval from 152 m to 180 m in 3 m increments. Data were recorded from three inline wells giving well offsets of 15 m and 61 m. The spectral ratio method was used to make Q calculations. Q averaged over frequency at the various depths ranges from 43 to 128. A comparison of Q with a resistivity log from the source well shows an inverse correlation. The two high Q regions have been interpreted as shaly zones and the lower Q zones as less shaly or sandy layers.

© 1993 ASEG
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1993-09-01
2026-01-23

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References

  1. Balogh, W.T., Owen, T.E. and Harris, J.M. (1988), ‘New piezoelectric transducer for hole-to-hole seismic applications’, 58th Ann. Internat. Mtg., Soc. Expl. Geophys. Expanded Abstracts, 155–157.
  2. Brown, R.L., Cook, R.N. and Lynn, D. (1989), ‘How useful is Poisson’s ratio for finding oil/gas?’, World Oil210, 99–106.
  3. Gardner, G.H.F., Wyllie, M.R.J. and Droschak, D.M. (1964), ‘Effects of pressure and fluid saturation on the attenuation of elastic waves in sands’, J. Petrol. Tech. 16, 189–198.
  4. Hamilton, D.S. (1991), ‘Reservoir heterogeneity at Seventy-Six West field’, an opportunity for increased oil recovery from barrier/strandplain reservoirs of the Jackson-Yegua trend by geologically targeted infill drilling’, Proceedings of the Formation Evaluation and Reservoir Geology Technical Conference and Exhibition of the Society of Petroleum Engineers, Dallas, Texas, 135–142.
  5. Hamilton, E.L. (1972), ‘Compressional-wave attenuation in marine sediments’, Geophysics37, 620–646.
  6. Harris, J.M. (1988), ‘Cross-well seismic measurements in sedimentary rocks’, 58th Ann. Internat. Mtg., Soc. Expl. Geophys. Expanded Abstracts, 147–150.
  7. Hauge, RS. (1981), ‘Measurement of attenuation from vertical seismic profiles’, Geophysics46, 1548–1558.
  8. Hyatt, D.B. (1990), The geology of the Seventy-Six West field, Duval county, Texas’, M.S. thesis, Univ. of New Orleans, (unpubl.)
  9. Lazaratos, S.K., Rector, J.W., Harris, J.M. and Van Schaack, M. (1991), ‘High resolution imaging with cross-well reflection data’, 61st Ann. Internat. Mtg., Soc. Expl. Geophys. Expanded Abstracts, 107–110.
  10. Link, C.A., McDonald, J.A., Zhou, H.-W. and Evans, B. J. (1993), ‘Cross-well tomography in the Seventy-Six West field’, The Leading Edge12, 36–40.
  11. McDonal, F.J., Angona, F.A., Mills, R.L., Sengbush, R.L., Van Nostrand, R.G. and White, J.E. (1958), ‘Attenuation of shear and compressional waves in Pierre Shale’, Geophysics23, 421–439.
  12. Mendoza-Amuchastegui, J. (1991), ‘Enhanced arrival time picking in high frequency transmission tomography’, M.S. thesis, University of Houston. (unpubl.)
  13. Newman, P.J. and Worthington, M.H. (1982), ‘ln-situ investigation of seismic body wave attentuation in heterogeneous media’, Geophysical Prospecting30, 377–400.
  14. Pickett, G. R. (1963), ‘Acoustic character logs and their application in formation evaluation’, J. Pet. Tech. 659–667.
  15. Schoenberger, M. and Levin, F.K. (1974), ‘Apparent attenuation due to interbed multiples’, Geophysics39, 278–291.
  16. Spencer, T. W., Davis, F.E., Ru-Chuan, W. and Zeitvogel, M. (1983), ‘VSP measurement of seismic attenuation’, 53rd Ann. Internat. Mtg., Soc. Expl. Geophys. Expanded Abstracts, 590–592.
  17. Spencer, T.W., Sonnad, J.R. and Butler, T.M. (1982), ‘Seismic Q — stratigraphy or dissipation’, Geophysics47, 16–24.
  18. Stewart, R.R. and Marchisio, G. (1991), ‘Cross-well seismic imaging using reflections’, 61st Ann. Internat. Mtg., Soc. Expl. Geophys. Expanded Abstracts, 375–378.
  19. Tatham, R.H. and McCormack, M.D. (1991), ‘Multicomponent seismology in petroleum exploration’, Soc. Expl. Geophys. Tulsa, OK, USA.
  20. Toks?z, M.N. and Johnston, D.H. (1981), ‘Seismic wave attenuation’, Soc. Expl. Geophys.
  21. Tullos, F.N. and Reid, C. (1969), ‘Seismic attenuation of Gulf Coast sediments’, Geophysics34, 516–528.
  22. Winkler, K.W. and Nur, A. (1979), ‘Pore fluids and seismic attenuation in rocks’, Geophys. Res. Lett. 6, 1–4.
  23. Winkler, K.W. and Nur, A. (1982), ‘Seismic attenuation, effects of pore fluids and frictional sliding’, Geophysics47, 1–15.
  24. Wyllie, M.R.J., Gardner, G.H.F. and Gregory, A.R. (1962), ‘Studies of elastic wave attentuation in porous media’, Geophysics27, 569–589.
  25. Zhou, H.-W., Jeck, J., Mendoza-Amuchastegui, J., Link, C.A. and McDonald, J.A., (1993), ‘Crosshole tomography in a shallow unconsolidated reservoir’, The Leading Edge12, 32–36.
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  • Article Type: Research Article
Keyword(s): crosshole; lithology indication; Q; reservoir characterization; Vp/Vs

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