What precautions should be taken when drilling geothermal wells?

Geothermal drilling is a project that needs to be carried out after collecting data from various sources to ensure the accuracy of the drilling work. Next, let's talk about some precautions to take when drilling geothermal wells.

1、According to the hydrogeological investigation report and water resources demonstration report of the test well to be drilled, the water output (related to the thickness of the aquifer and the wellhead size has a slight effect), recharge capacity, etc.

2、According to the area to be heated or cooled, calculate the heat load and cooling load, and determine the type and number of water source heat pump units and the amount of water required.

3、Consider the geographical location of the well site and the influence of climate. (For example, if there is a river dam nearby, the length of the rainy season will have an impact.) First calculate the heat dissipation and heat absorption based on the load. When conducting thermal response tests, such as no conditions for testing, you can estimate based on experience ~ buried pipes are divided into single U-shaped, double U-shaped, casing and other forms, usually custom-made products, the site is not much done now and not economical, so there is no well bottom connection.

4, if you do ground source heat pump, then you must sit in the geological exploration, to understand the underground soil temperature, usually do ground source heat pump cost much higher than water source heat pump, water source heat pump, then you need to look at your project groundwater per hour how many tons of water per well, but water source heat pump, then you must consider the replenishment problem, water source heat pump replenishment problem is a prerequisite for good operation of water source heat pump, there are backup wells, need to Consider if each well produces 200 tons of water per hour, but the recharge pressure can not reach 200 tons, the recharge water can be generally divided into two wells or three wells to divert the recharge water source heat pump operation, while taking water, while recharge ground source heat pump closed system will not affect the water, water circulation in the buried pipes, will not be discharged to the outside; soil layer, then there does not seem to be much impact; disadvantages have ah. Expensive other considerations: If the green area or parking area is relatively large, you can consider ground source, because the ground source requires a larger area to lay buried pipes.

Hunan Puqi geological exploration equipment research institute, is engaged in geological survey water instrument equipment research professional institutions, and undertake the "national thirteenth five-year water special scientific research project" Puqi new generation of physical prospecting water instrument with easy to carry, simple operation, automatic map, high accuracy characteristics, its equipment has won a number of invention patents and software copyrights.