Because oil fields need the water injection well monitoring device, design a kind of flow rate automatic flow valve that is applied in the water injection well monitoring device.

结合油田注水井监控装置的需要，设计了一种流量自动调节阀，用来配合注水井监控装置的使用。

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These three kinds of techniques of well testing, step rate test and injection test at pre-fracturing are conducted to acquire formation parameters and applied in one CBM well successfully.

将地层测试、升排量注入与压降测试、注入与压降测试三种测试工艺在煤层气井压裂前实施，以获取地层参数，并将这三种方法在同一口煤层气井上成功进行了应用。

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Comparing among different gas injection rates, it can calculate the optimum injection rate of gas well.

通过不同注气量对比，可计算出气井最佳注气量。

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