Full
Outline
In the production process of in-situ leaching of uranium, with the increase of leaching years, the pumping capacity of the wells will be accompanied by the decline, and well washing, plugging removal and permeability enhancement have become normal operations. But the well washing frequency is high, efficiency is low, and operation is complicated. In view of the limitations of well washing, this research, based on the working principles of various well washing methods and the concept of integrated technology, designed an integrated well washing device. This device integrates various well washing techniques such as high pressure air washing, air piston washing, water piston washing, high pressure water rotary jet washing, high pressure water drilling, and chemical sedimentation washing onto a multi-functional pipe string, and is mounted on a trailer drilling rig. All kinds of washing methods are freely switched in the well, and no pipe string is proposed. The test results show that the average amount of water after well washing is increased by 153.4%, which solves the limitations of the single well washing method, and improves the efficiency and effect of well washing.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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