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The Calculation Method and Its Application of LSI Index about Production Well

At present,there isn't a integrative quantitative index that combines the production and liquid surface. After the oil well is shutted off, the liquid surface rises as the production formation continues extravasating. Resembling the PI index calculation method of injection well, we can get the oil well's LSI index making use of its liquid surface build up curve. The LSI index is a kind of integrative reaction about extravasate ability of oil well. It has the poor type, the normal and good type. The LSI index can be used to analyse quantitatively for single well, well group or production unit. The spot practice indicates that LSI index can satisfy the need for oil field production well.