The effect of gravel packing in screen casing annular and perforations on the well productivity can be shown by gravel pack productivity ratio, which can be calculated by the additional skin factor.
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美
- 計算射孔孔眼礫石層及環(huán)空礫石層的附加表皮因數 ,用礫石充填后產(chǎn)能比考慮炮眼和篩套環(huán)空礫石充填對產(chǎn)能的影響 ;壓裂增產(chǎn)倍數與礫石充填產(chǎn)能比的乘積即為壓裂充填防砂后的總產(chǎn)能比。
