The gas will effect the pump efficiency of deep well-pump, if the amount of the gas of oil well is large, even gas locking occurs.

如果油井产出气量较大，则这些气体对深井泵的泵效将产生很大影响，严重的井甚至发生气锁。

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The increased gas volume in the wellbore resulted in frequent gas locking of the ESP, which resulted in little to no liquid flowing past the motor and through the pump.

随着井内气体量增加，进一步造成ESP频繁气锁，最终泵只能举升少量甚至举升不出液体。

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Therefore, the self locking type air spring has the function of maintaining the free type gas spring, and can also be locked at any position of the stroke!

所以自锁型气弹簧在保持了自由型气弹簧功能的同时，还可以在行程的任一位置锁定，而且锁定后还可以承载较大的负荷！

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The BP deal guarantees Sempra gas at a discount to the price on the U.S.-Mexico border, locking in a nice spread.

FORBES: Gas Guzzler