Spontaneous Imbibition Flotation Machine

May 21 2019 Abstract. During under-balanced drilling in a shale reservoir water based drilling fluid can enter the formation due to capillary force when the under-pressure difference is small.Thus it causes pore pressure change around the wellbore and reduces the stability of the borehole.Becuase of the potential for blowouts there is a significant need to to carry out the research on the influence law .

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