Fountain reinforcement is a pipe design of the circuit and the connection device of which has a flange connection with various tees, connecting devices, etc. During the arrangement of the system, the flange compound is sealing with steel gaskets with minimal carbon content.

Fountain reinforcement is designed to perform a variety of functions. One of them is typical pipeline strapping. This device allows you to control the stream of the medium in the well and carry out controlling processes.

Fountain reinforcement is widely used when sealing and when the wiring of discharge lines are wiring. In almost all type types of work related to the pipeline laying, it is necessary to use such a device.

1 Appointment of fountain reinforcement

Fountain reinforcement has major use cases:

• well sealing;
• formation of product removal;
• adjustment of the well flow rate;
• access directly to the bottom of the well;
• manipulation in the outer space (conducting operations for sampling without stopping production, change in pressure and temperature in a well-hard bottom).

Fountain reinforcement is used in excess pressure under the influence of large loads. Apply the design in the case when there is a possibility of exposure to the aggressive medium in wells. It is often used at large abrasive loads, when there are a large number of associations of various rocks in water.

It is necessary to use the system with the fact that this type of equipment must have high strength and durability, without which production will be ineffective. The main selection of the application of this equipment is - gas production and gasket oil pipelines.

1.1 varieties

Gosstandart identified several types of fountain reinforcement:

1. Tee / Cross (selection depends on the configurations of the fountain christmas tree). Side discharges are connected to the collection and fruitless installations using blank lines.
2. Two-row or single-row (the number of rows of pump products descending into the well).
3. Equipped with valves or cranes. The valves are used for petroleum wells, and the cranes are for gas.

2 design

Production of reinforcement, according to GOST 13846-84, It assumes the use of a tee and cross-type scheme.

The device consists of:

• pipe head;
• fountain tree;
• manual locking devices;
• throtes.

The pipe head is used for suspension of several rows of NKTs, as well as their sealing. In addition, the pipe head takes part in technological operations, which include: mastering, operation and repair of the well.

Colon suspension is carried out (on thread):

• if the single-row elevator is on the thread of the coil;
• if a two-row elevator: the inner column is on the thread of the coil, the outer column is on the thread of the pipe head crossbars.

The pipe head implies the replacement of its side valves. This process is carried out using special deaf traffic jams that are installed in the threaded holes of the housing.

Functions of the Christmas tree:

• sends products to a vykutny line;
• takes part in the installation of special devices;
• measures of pressure and temperature medium;
• descent of boreholes for cleaning pipes.

See also: What are the classes of reinforcement, and how do they differ from each other?

Shut-off devices are represented as passing cork cranes and direct-flow valves with lubrication. Their main purpose is overlapping the passing holes.

The column heads perform the suspension function for the casing, sealing and pressure control between pipe columns.

2.1 Technical Requirements for Design

GOST 13846-89 Determines fountain reinforcement as a device designed to seal wells, overlapping the medium and its direction to manifold, and conducting other technological operations.

According to GOST 16350-80, fountain fittings can be used in moderate and cold macroclimatic areas. Accommodation is made in category 1 (GOST 15150-69).

Optimal ambient air temperature: from -60ºC and up to + 40ºC.

GOST 51365-2009 has established the use of a certain material and the level of technical requirements that are most suitable for operating conditions.

Production of details can be design for individual orders Taking into account the fact that all operating conditions and the choice of component material will meet the established standards.

2.2 EFC designation

• Af - fountain fittings;
• K is the method of hanging the pipeline according to GOST 13846-84;
• n - scheme according to GOST 13846-84 (n \u003d 1-6);
• E - cable input;
• 65 × 21 - conditional passage and working pressure in MPa;
• Chl - climatic performance of the product;
• K1 is the category of corrosion resistance.

Typical schemes according to GOST 13846-89:

• AF1, AFC 1;
• Af2, afk 2;
• Af3, afk 3;
• Af4, afk 4;
• Af5, afk 5;
• AF6, AFK 6.

2.3 Installation and dismantling of fountain reinforcement

In the process, the use of wells is made of installation and crimping design. The main function in the join is carried out by column heads. The holes in the upper flange, allow you to attach parts of various sizes.

Phased installation:

1. Between the flanges laid a special small carbonaceous steel with an oval cross section.
2. With the help of elevators, the column of compressor pipes omit.
3. Twist the pipes (you need to smear the pipe threads).
4. Swipe pipe columns.