During the test and production of in-situ leaching of sandstone deposit, it is very difficult and complicated to exploit boreholes when confined water head of ore-bearing acquifer is quite low.
在砂岩矿床的地浸试验和生产中，含矿含水层地下水承压水头很低时，地浸钻孔的开拓难度很大且工艺复杂。
It is an effective method for improving test precision that the water head loss tests of hydropower station inlet section are performed by increasing discharge or raising reservoir water level.
同时采用加大流量法和提高库水位进行进水口段的水力损失试验，对提高试验精度是一个行之有效的方法。
A new horizontal well production technology without dismantling well head and pulling up string to find water and test is introduced which can decrease operating times and cost.
水平井不动井口、管柱找水、试油、生产工艺技术，大大减少了作业次数，节约了生产成本。
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