但是，有些水平井的产量与直井相比，达不到预期效果。

But some horizontal Wells does not gain the perfect productivity, due to low permeability or some other reasons.

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并根据矿场生产动态数据和室内渗吸实验，建立适合于注水吞吐井的产量递减模型。

A production decline model which is fit for water huff and puff well is established based on the in-site production data and imbibition experiment in lab.

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由于地下水位下降，灌溉井干涸，居于世界之首的中国小麦产量，已经从1997年1.23亿吨的峰值下降了8%。

As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.

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