Tying a well with your own hands: a step-by-step description, features and recommendations

After the completion of the drilling of the well, it is possible to proceed with its arrangement. A fairly important stage is tying the well. Such work is carried out using one of the existing technologies, which differ in functionality, reliability and cost.

Main features of strapping

If you want to leave the top hole on the street, then you can use it only in the summer. If you connect the water pipe to the end of the year in the warm season, then the source can be used until the first cold. If it is necessary to supply water to the house all year round, the pipeline should be made permanent. For this, it is laid below the freezing line. This indicates that the entrance to the well should be located at a depth of 2 m.

Protect the source of water is necessary not only from freezing, but also from getting debris. Among other things, the equipment must be serviced periodically, and the well should be cleaned. Therefore, the system must be provided with free access.

Description of the technology

The piping of the well is a whole complex of works that assume:

• Laying and launching of the water supply system;
• installation of equipment;
• Ensuring uninterrupted water supply;
• Protection of the source of water from dirt and freezing.

If we are talking about a standard strapping scheme, then first we need to make an adapter, caisson or pit. The pipeline system at the next stage should be designed and laid. The masters will have to pick up the pump and filters, mount the hydraulic accumulator and take care of installing and starting the pump. The success of well operation will depend on how well-thought-out and qualitative the project is.

Recommendations for the adapter, caisson and pit

If the piping of the well is performed by you yourself, then, in the opinion of consumers, it is important to consider what technology will be used to equip the place of launching. It can be:

• pit;
• caisson;
• adapter.

An alternative solution is the construction of a ground structure. However, this option is justified only if the well is in a warm climatic zone. If the temperature is lowered, the room will require heating, which is unprofitable.

The piping of the borehole will be implemented very simply if a pit is produced. An additional benefit will be obtained if there is access to the building materials of the former use. As one limitation is the level of groundwater, which should be low enough, otherwise, as the domestic craftsmen emphasize, the pit will be flooded. It can be made from concrete rings, bricks or concrete formwork.

Step-by-step description of strapping with a pit

If you decide to use as a technology binding piping, then first you need to determine the way it is made. At the next stage a pit is prepared, the depth of which can reach 2 m, otherwise it will be extremely inconvenient to work inside. Crushed stone is poured into the bottom, then you can proceed to the manufacture of walls. If necessary, they can be waterproofed, and then sprinkled with expanded clay or gravel along the perimeter.

If the piping of the well itself is performed using the technology of erecting a pit, it should be remembered that it has an impressive minus, expressed in low tightness. This prevents the possibility of installation inside the equipment, for this you must prepare another room. The cover can be made of metal, an alternative solution is the use of a concrete slab with a hatch. In each of these cases, thermal insulation is required. You can place the main cover area below the top line of the ground. Outside there will be only a hatch.

Choice of equipment

A pump acts as the main equipment for tying the well. Without it, water will not flow into the pipeline. When choosing it, it is necessary to take into account the characteristics of the well and determine the loads, so that the device is able to cope with the tasks. Among the main parameters of choice should be:

• performance;
• Debit wells;
• Automation;
• Diameter of the well;
• Head;
• Purity of water.

With regard to productivity, it is determined by taking into account the requirements for water. This figure is important to know as accurately as possible, because the power of the pump depends on the cost. To the need should be added 20%. This is necessary for the reason that at times water is required in a larger volume, among other things, the pump should not work at the limit.

When determining the well debit, you should take into account that the productivity of the equipment is selected taking into account the amount of water the well can provide. If there the water comes very slowly, then in the acquisition of a powerful pump there is no sense. It is desirable that it has automatic control for autonomous shutdown, when water in the borehole ends. When working on a dry device, it can burn.

The diagram of the piping of the borehole on water is presented in the article. Among other things, when selecting equipment, you must consider the diameter of the well for normal operation of the pump. Its diameter should be at least 1 cm smaller than the casing. One of the important characteristics is the head. He indicates to what height the unit will be able to raise water.

In calculations, it should be borne in mind that the length of the water pipe should be added to the depth of the well. Pay attention also to the purity of the water. The pump should be designed for the content of fine sand in the liquid. If this feature is not provided, then the device will quickly fail.

The outflow of the mouth and its scheme

The well head piping scheme is used when working on reservoirs with reservoir pressure that does not exceed hydrostatic pressure. At the same time, there is a possibility of oil and gas occurrence. When using a universal mouth sealer through pipes, a shut-off arrangement is used to eliminate oil and gas manifestations. It has special requirements, among them:

• The ball valve must be in the open position;
• The parameters of the remote branch pipe are determined in such a way that the circular groove of the coupling is at the level of the shutter;
• The crane is closed only after closing the valve plugs.

The above scheme is used for works that are directed to current and major repairs, as well as the development of wells with reservoir pressure, which may exceed or equal hydrostatic.

Oil well and features of its strapping

Tube tying of an oil well is a part of a christmas tree, which is located on a column harness. It is designed for one or two downhole pipelines, control and control of the flow of the medium in the intertube space. The upper end of the downhole pipeline is fixed in the coil, which is located on the pipe head.

The output of the Christmas tree is carried out at an operating pressure in the range from 14 to 140 MPa. In this case, the cross-section of the trunk can be equal to a digit from 50 to 150 mm. Fountain Christmas tree can have a design in the form of tees or crosses. These parameters are determined by rows of pipes that go downhole. In addition, the system is equipped with cranes or latches.

Gas wells and features of their strapping

The piping of gas wells is necessary for connection to collectors. Nodes and blocks are used to perform technological operations in field development. Strapping is not only a set of works, but also a set of assembly units that involves welded structures with counter flanges, tees and bends, as well as fittings and adapters.

The quality of the joints is increased by welding, which does not destroy the joints and assumes a quality that could be obtained in the factory. The nominal passage can vary from 50 to 100 mm, while the working pressure is 14-35 MPa.

Conclusion

A caisson can be used for tying the well, which is the same pit, but manufactured at the factory. In many cases, this method is most preferable. It can be made of different materials, for example metal or plastic. The caisson has undeniable advantages over other ways of tying. First, it is completely sealed. Secondly, it's easier to install. Thirdly, the caisson can have almost any size, so the parameters can be selected taking into account the installed equipment. If the groundwater level in the area exceeds 3 m, then a sealed caisson should be installed necessarily when tying the well.