So far, most users the location of emergency shutdown valves installed on the dumb Wells.

到目前为止，多数用户把紧急关闭阀安装位置放在喑井内。

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This approach not only decreases the cost but also saves much time, furthermore it has laid a stable foundation for the pumping Wells and gas Wells of testing without shutdown.

采用这种方法既节约成本，又节约时间，而且为抽油机井和天然气井的不停产试井奠定了可靠的基础。

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While Chesapeake Energy claims that there is no relationship, researchers have observed that the earthquakes in Central Arkansas declined since two injection wells in the area were shutdown.

FORBES: Chesapeake Good For $38 But Faces Big Fracking Headaches