在恒定的流体产量下，在井底静压力与井底流动压力之间的压力差值。
The difference between static bottomhole pressure and flowing bottomhole pressure (in psi) at a constant fluid production rate.
大庆油田庆深气田的深层天然气井具有井深、井底温度高、井底压力大、气水同产等特点，前人的井底静压折算公式不能达到生产所需的精度。
The deep gas wells of Qingshen gas field in Daqing are characterized by the great well depth, high bottom temperature, high bottom pressure and gas production with water.
根据矿岩在溜井内产生摩擦阻力的不同，矿岩对溜井底部静压力可分为3种状态。
Within the ore pass, rock & ore cause different frictional forces that can be divided into 3 type of static pressure and stress.
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