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  1. Urgent question please reply

    Dear all,

    A sandstone reservoir was drilled with oil based mud with good shows.
    Porosity is in the range of 4 to 7 percent and water saturation is also low.
    MDT mobilities are less than 1 and estimated permeability is also very low.
    Testing the best zone, it flowed water with some hydrocarbon.
    MDT hydrocarbon sample was taken in the tested zone.
    Reservoir is at irreducible Sw, why it flowed water?

    Please reply and thanks.


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  3. Re: Urgent question please reply

    Hello,
    what was the MDT sample composition? Oil or gas or both? Did it contain any water?
    Was the formation water resistivity measured or inferred?
    Also, is the reservoir section in hydraulic communication or might there be several isolated layers with different formation fluids?

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