Talyb Samedov (asker) Jan 24, 2015:

Определение По ссылке предложенной Nick Chuban нашел следующее определение: Setting the pump stall pressure will prevent the pump from operating at a pressure in excess of the
recommended pressure for the equipment attached to the pump. Но термин "давление останова" встречается не так часто, может есть более распространенный термин?

Talyb Samedov (asker) Jan 23, 2015:

В моем тексте про пневмопривод ничего нет

Enote Jan 23, 2015:

Насосы а случаем не с пневмоприводом?

Talyb Samedov (asker) Jan 23, 2015:

Нашел следующий текст в интернете, из него более понятно, что-такое stall pressure (я думаю, что это то же самое, что и stall-out pressure: 4. Stall-out Pressure: There is a maximum recommended value of motor differential pressure. At this point, the optimum torque is produced by the motor. If the effective WOB is increased beyond this point, pump pressure increases further. The pressure across the motor increases to a point where the lining of the stator is deformed. The rotor/stator seal is broken and the mud flows straight through without turning the bit (blow-by or slippage). The pump pressure reading jumps sharply and does not vary as additional WOB is applied. This is known as stall-out condition.

Studies have shown that the power output curve is a parabola and not a smooth upward curve, as originally thought. If the PDM is operated at 50%-60% of the maximum allowable motor differential pressure, the same performance should be achieved as when operating at 90% of differential. The former situation is much better however, there is a much larger ‘cushion’ available before stall-out. This should result in significantly longer motor life.