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Abstract

Summary

Current drilling strategy requires shale sequences to be drilled with mud weights far below the modelled and empirically ( ) determined shear failure gradient and hence causes the need for accepting a large degree of shear failure (break outs). In this work we are quantifying the three-dimensional, time dependent morphological development of these break outs by combining high resolution acoustic borehole image data with lower resolution but larger volume sensitive short & long spaced density image main pass and relog data.

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/content/papers/10.3997/2214-4609.2025640022
2025-09-21
2026-02-15
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References

  1. Bender, Kårstad, Røsvik Jensen, Raum. “Wellbore Failure Modes and Their Time Dependency in Deformed Lista Fm Shales, Grane Field” Paper presented at Fifth EAGE Borehole Geology Workshop, Al Khobar. Saudi Arabia, 2023
    [Google Scholar]
  2. Ellis, Darwin. “Formation Porosity Estimation from Density Logs.” Petrophysics44, SPWLA-2003-v44n5a1, (2003)
    [Google Scholar]
  3. Guo, Pingjun, Mendoza, Alberto, and HezhuYin. “Impact Of Density Tool Depth Of Investigation On Dip Determination In High Angle And Horizontal Wells.” Paper presented at the SPWLA 49th Annual Logging Symposium, Austin, Texas, SPWLA-2008-CCCC, (2008)
    [Google Scholar]
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