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Formation microscanner applications in the study of subsurface paleozoic carbonate rocks: Southwestern Ontario, Canada

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Abstract

The Formation MicroScanner (FMS) service, introduced by Schlumberger in 1985, has been used successfully on several Trenton — Black River (Ordovician) wells in Southwestern Ontario, Canada, to aid in structural and stratigraphic interpretation.

The FMS tool, similar to the Dual Dipmeter tool, has arrays of microelectrodes added on two or all four caliper pads. The microconductivity, measured at a high sample rate, provides an oriented image displayed on a variable intensity grey scale. A colour image is also available when working on a SUN Workstation (FMS Image Examiner System).

Examples of FMS images obtained in the Trenton and Black River formations illustrate open and healed fractures, secondary porosity developments, changes in porosity, and thin bedding features. The use of these images for reservoir evaluation, completion strategies, and development drilling is discussed.

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References

  • BRIGHAM, R.J., 1971, Structural geology of Southwestern Ontario and Southeastern Michigan:Mines and Northern Affairs Petroleum Resources, Section 1, Paper 71-2.

  • EKSTROM, M.P., DAHAN, C.A., CHEN, M.Y., LLOYD, P.M., and ROSSI, J., 1986,Formation imaging with microelectrical scanning arrays, Schlumberger.

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Authors and Affiliations

  1. Schlumberger Well Services, Fairmont, West Virginia, USA

    Robert T. Wolfsberger (District Manager)

  2. PPC Oil & Gas Corp., London, Ontario, Canada

    Ed P. Welychka (Chief Geologist)

  3. Middle East (MEA): Schlumberger Technical Services, Cairo, Egypt

    Eric J. W. Standen

Authors
  1. Robert T. Wolfsberger
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  2. Ed P. Welychka
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  3. Eric J. W. Standen
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Wolfsberger, R.T., Welychka, E.P. & Standen, E.J.W. Formation microscanner applications in the study of subsurface paleozoic carbonate rocks: Southwestern Ontario, Canada. Carbonates Evaporites 5, 123–140 (1990). https://doi.org/10.1007/BF03174844

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  • DOI: https://doi.org/10.1007/BF03174844

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