Casing of a well - how to select, install and dismantle it

If you have your own well or you are just going to equip it in order to get the water in the required volumes, you should know exactly how to properly equip the source of the fluid and what needs to be taken into account. In particular, what materials for casing well to choose.

Remember that a well without a casing pipe will not function for a long time, and the water itself will quickly become dirty. In this article, we will describe in detail how to properly drill a well into the water with your own hands.

Our instruction will be useful for anyone who wants to save on this job and is not going to attract employees.

What type of products to choose

If you need a well casing, you can make it from pipes of various types:

• asbestos cement;
• plastic;
• steel, etc.

They are distinguished not only by price, but also performance. Below is a detailed description of each type of product.

Asbestos-cement pipes

This type of materials has been successfully used for many years, since they are characterized by the following positive qualities:

• neutrality;
• resistance to corrosion;
• resistance to chemicals.

Council When installing such pipes, it is recommended to be as careful as possible, since they are rather fragile and can break or crumble. You also need to provide for sealing the walls of the well.

However, in addition to the positive properties, there are negative ones, which led to a decline in the popularity of this material:

• high requirements for tightness and accuracy of joints;
• impossibility of installation in sandy soil;
• the impossibility of equipment wells, the depth of which exceeds one hundred meters;
• high material cost.

Council Choosing asbestos-cement pipes, please note that not all models are designed for contact with drinking water!

Steel tubes

These models are highly resistant to virtually any load.

However, this positive characteristic is offset by negative ones:

• susceptibility to corrosion;
• high iron content in water;
• the need to install a filter to combat iron and rust;
• the probability of failure of the pump as a result of rust;
• metallic taste of water;
• installation complexity.

Note that the installation of the casing in the well in this case is performed only on two types of soil:

• sandy;
• limestone.

Council When installing a steel pipe, be sure to install an additional filter to clean the liquid from high iron content.

Plastic models

This type is today considered the most optimal because:

• reliable;
• easy to install;
• durable;
• inexpensive.

However, if you are interested in how to install the casing in the well, if a plastic product is chosen, then note that they are only suitable for shallow sources.

For installation, the following types of products are most often used:

• unplasticized polyvinyl chloride;
• polypropylene;
• polyethylene.

Connection Features

Pipe installation involves a strong and reliable connection of all parts.

There are three main connection methods:

• by welding;
• sockets;
• thread or fittings.

If we are talking about asbestos-cement pipes, then only clutches are used.

Also installation assumes compliance with certain requirements:

• the edge of the pipe should not reach to the bottom by about 50 centimeters - this will ensure free passage of water at any time for years;
• the diameter when deepening should not decrease, since this will lead to loss of water permeability;
• Each link should be fastened as tightly as possible, depending on the material, for example, at least four brackets and stainless steel strips.

If dismantling is necessary

If you are interested in the question of how to pull a casing pipe out of a well, then it is extremely important to understand why it is necessary to engage in this process at all.

At least there are two reasons:

• restore an abandoned source;
• make repairs functioning.

You have decided that the replacement of the casing in the well is a necessity, then in this case you can perform this process in several main ways.

For example, hire professionals who know exactly how to get the casing from a well.

In particular, they use special equipment:

• taps;
• overshots;
• headboards and other devices.

Of course, this method is the easiest, because you will not have to do anything, but at the same time it is expensive. Drillers rate their work highly.

The second method is to do all the work yourself.

In this case, you need to perform the following sequence of actions:

1. Fix the end of the pipe by:

• hose clamp;
• loops.

1. Fasten the retainer on the short arm of the long lever and gradually remove the pipe.
2. Instead of a lever, a big jack is perfect, for example, from a large car or a railway one.

We make new equipment

You can also make a special device with your own hands, for which you will need the following materials:

• channel of ten;
• from a channel it is necessary to make two racks;
• the struts must be in the form of the letter T turned upside down.
• the height of the uprights is about one meter, and the width is about sixty centimeters;
• on the upper part of the bearing is mounted, the inner diameter of which is four centimeters;
• through the bearing an axis is threaded, to which the handle and the drum are attached;
• for dismantling the edge of the pipe is fixed with a cable;
• then just twist the drum and remove the structure.

Council If you dismantle a long pipe, in this case, you can be reinstated by means of a special chalk, which will help hold the pipe when intercepting the cable fastening. For dismounting the plastic pipe, it is recommended to use a crimping clamp.

In conclusion

Now you know what a casing is, what types it is, how to install and dismantle it. In general, there are no particular difficulties in this work. If desired, and diligence - everything can be done quite quickly (see also the article Kolonkovye, sludge and casing pipes for wells).

In the presented video in this article you will find additional information on this topic. We wish you success!