New method evaluates efficiency of wellbore stimulation operations

I.M. Kutasov Pajarito Enterprises Santa Fe, NM L.V. Eppelbaum Tel Aviv University Tel Aviv A new technique has been developed for analyzing the bottomhole pressure at constant flow rate drawdown well tests. The method presented in this article enables calculation of the skin factor for stimulated oil wells. Only records of the flowing time and bottomhole flowing pressure data are required to compute the value of the skin factor. A semitheoretical equation was earlier suggested to approximate the dimensionless bottomhole pressure. This formula is used to obtain a quadratic equation for determining the skin factor. The suggested method can be utilized by production managers to evaluate the ...

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