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The AAPG/Datapages Combined Publications Database

CSPG Bulletin


Bulletin of Canadian Petroleum Geology
Vol. 39 (1991), No. 2. (June), Pages 221-221

"True Previous HitResistivityNext Hit of Thin Dipping Sands [Abstract]"

Patterson, D.1, Harkins, J.1, Hitchcock, S.1


Employing a pulsed power deep induction device (XHR*) allows the application of a one foot layered Previous HitresistivityNext Hit model that includes Previous HitapparentNext Hit dip magnitude and produces a solution of Rt in dipping beds. This approach illustrates the problems and confusion created over conventional devices with various depths of investigation, magnified by the effects of dip. An example is presented in which the inversion solution for Previous HitresistivityNext Hit considering dip, is substantiated by the core evaluation. In this case, the new Previous HitresistivityNext Hit agreed with the core indicating that the thin sands were near irreducible water saturation. Once the Previous HitresistivityTop is resolved of the sands considering dip in the one foot model inversion solution, an interbedded sand analysis can be applied to further improve the vertical resolution and data accuracy for beds thinner than one foot. Again, a simple approach can be applied to the evaluation of water saturation based on an assumed porosity.

* Mark of MPI

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1 Magnetic Pulse Incorporated, Fremont, California 94538, U.S.A.

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