METHODS FOR CHECKING THE DEPTH OF A READY WELL ON WATER
In this article we will tell you how to check the depth of the well after drilling. The required depth of the well is a determining factor for the quality of the supplied water and pricing. Most owners carefully monitor this factor, because when calculating the cost, each meter is paid. If you are drilling a well under water on your own, then you still need to determine the depth of the well as accurately as possible. This is required for accurate installation of work equipment.
WHAT DEPTH ON WATER DEPENDS ON
The required depth of the well for water depends on which balls of soil the aquifers are placed on. You must consider the fact why you will need this well. For example, if it is needed for watering plants, then it is enough to use water located at a depth of 4-6 meters. But it is not recommended to use such water for drinking, so more extensive drilling will be required.
We must not lose sight of the fact that upon reaching aquifers it is imperative to take water for analysis. If the first analysis shows that the level of hazardous pollutants has been exceeded in the water, then it is necessary to continue work until reaching the balls with available drinking water.
WHAT WORK METHODS EXIST
One of the advantages of working with us is that, using our experience, we know what the optimal depth should be so that you get exceptionally high-quality water. For this, our experts use a depth map .
There are several ways to check the depth of a well after drilling. They differ in accuracy, complexity of work and accessibility.
• simple mechanical way
• a more technologically advanced method using a magnetic logging cable
• measurement with an acoustic depth gauge
So, now let’s talk about each method separately.
The first method is available to absolutely everyone. He will need a cord, a mechanical load and a ruler. There are specialized hydrogeological roulettes that simplify this process. To check the depth of the well after drilling, it is necessary to lower the load into the well until there is a noticeable decrease in cord tension. Next, carefully remove the devices and measure the length of the cord. The wet part of the cord determines the placement of the water mirror.
This method is very simple, but has a slight minus. It lies in the fact that in this way it is possible to check the depth of the wells after drilling up to 10 meters. The wet part of the cord will give you an idea of static water levels, but dynamic data is needed to properly install the pump.
APPLICATION OF A LOGGING CABLE
The second method is similar in principle to the first, but it uses more advanced equipment that provides more information. In accuracy, this method is the first, being the most popular in determining the depth of aquifers. The basis of the equipment is a coil with magnetic tags, which transmit information to the receiver. A special roller is provided on the reel, thanks to which the depth is determined.
Pros and Cons of Acoustic Depth Gauge
As for the use of an acoustic depth gauge, this equipment is widely used in the mining industry, not only when measuring well depth. This method is based on the use of echolocation. An acoustic signal is sent to the well, then the device measures the performance of the incoming and outgoing signals. The difference is directly proportional to the distance traveled, that is, the depth of the well. This method allows you to measure the depth of the well pretty quickly. The only negative – the equipment is expensive and buying it for yourself is unprofitable. If you want to use this method, it is best to contact professionals.
CAN YOU TRUST A TECHNOLOGICAL PASSPORT OF A WELL?
After completing the work, any company provides a technological passport of the well, which indicates the depth. Whether to trust this document is a moot point. It all depends on the professionalism and responsibility of the company with which you cooperate. You probably already heard about how they cheat while drilling water wells. A company that values reputation will not do the same. Therefore, it is important to choose companies with good customer reviews.
If you doubt that they will be given the correct data at the end of the work, it is best to be present at the completion of the drilling of the well. Drill rigs provide final data and count the installed rods. You will be able to control this process yourself.
Diagnostics and verification of wells
One of the methods that is very effective for preparatory work is the diagnosis of wells. This process is a study of the well and the ability to detect even the smallest damage and where they are located, to assess violations of its tightness. If the water in the well becomes dirty or starts disappearing somewhere, diagnostics must be carried out immediately. Well diagnostics are also carried out for prophylaxis, in order to prevent possible damage and cut off water supply, such actions should be carried out regularly.
Inspection and diagnostics of wells in the complex
Diagnosis is carried out for in-depth study of water intake and analysis of data that were obtained during the examination.
The following data is analyzed:
dynamic and static water level;
what is the water content of the soil;
the internal structure of the well, its integrity;
bacteriological, chemical, radiological data analysis.
Mandatory verification of indicators:
casing string integrity;
well equipment operation;
foreign bodies (presence or absence in water).
Carrying out video diagnostics
A specialist who has extensive experience in drilling and repairing wells can immediately “by eye” identify any damage to the water intake and their cause. But not everyone trusts the “grandfather” method of such diagnostics. Therefore, firms involved in working with wells prefer to use video diagnostics to analyze the condition of the well.
This type of diagnosis allows you to accurately determine the degree of contamination of the water, where there are small chips, scratches in the intake. Video diagnostics will help to really assess what kind of repair or cleaning a well will need. Such diagnostics will save time for specialists and possibly money for the customer.
This type of diagnosis is carried out with the help of deep-sea video cameras of high power, which fix the internal walls of the intake. Water samples are also taken and chemical and other analyzes are done.
When choosing a company, in order to avoid unpleasant situations, it is better to contact professionals. Poorly performed diagnostics can lead to the fact that they will make repairs, but will not eliminate all the damage. This will entail re-diagnosis and re-costs. Specialists who have good equipment, extensive experience and good reputation usually do well diagnostics quickly and efficiently, as well as at affordable prices.