RU2638062C1 - Dual bore wellhead equipment (variants) - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: in one aspect of the invention, there is a dual bore wellhead equipment comprising: a spider (1) consisting of a string branch pipe with a thread in the lower part, an upper mounting flange (2) welded in the upper part, and at least one side branch (3, 4) welded in the middle part; a spider-pipe holder (5) of the first row of tubing pipes made in the form of a disc with two channels, one of which is made with upper and lower threads, wherein the spider-pipe holder (5) is hermetically mounted on the upper mounting flange (2) and is sealed by metal gasket (8). At that a side branch pipe is provided in the spider-pipe holder; the second row of pipe in the pipe holder (10) is made in the form of t-piece with a channel made with upper and lower threads, wherein the pipe holder (10) is hermetically mounted on the spider-tube holder (5) and sealed with metal gasket (9), in this case a side branch is provided in the pipe holder (10).

EFFECT: improved reliability of fittings operation and reduced labour intensity for its installation and disassembly at the well.

24 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to the field of the oil and gas industry, in particular to wellhead double-barrel armature, which can be used in well development using technology for simultaneous and separate operation.

BACKGROUND

When developing wells using the technology of simultaneous-separate operation (ORE), it is traditional to use deep assemblies containing a packer, a sucker rod pump with an additional suction valve located on the side opening of the cylinder wall and the liner. Such ORE devices provide simultaneous and separate operation of two production facilities in one well with optimal parameters for them.

At the same time, well development using the WEM technology requires the use of a specially designed double-barrel wellhead. One example is the wellhead double-barrel armature AUD 80 / 50-40 (www.tms-group.rf / catalog / brs-catalog (russian) .pdf, p.16-17), the disadvantages of which are:

1. The complexity of the assembly and installation of the sealing unit of the pipe holder of the second column of tubing due to the need to wind the stuffing box packing on the pipe holder with its subsequent compression of the threaded ring.

2. The complexity of mounting the pipe holder of the second tubing string into the crosspiece-pipe holder due to the need to compress the retaining ring during the descent of the pipe holder into the crosspiece-pipe holder.

3. The risk of damage to the stuffing box packing when passing the lateral outlet hole during the descent of the pipe holder into the pipe holder.

4. A threaded connection between the pipe and the column flange leading to the likelihood of a medium passing through the threaded connection in case of violation of the requirements for assembly and installation.

5. The inconvenience of slinging during the installation of the cross-pipe holder and pipe holder due to the lack of sling means on them.

6. The impossibility of re-mounting valves without replacing the stuffing box packing material.

Also known in the prior art are wellhead equipment described in RU 2546707 C1, publ. 04/10/2015, containing the pipe holders of the first and second rows of pipes, a sealing nipple of the first row and samplers. The sealing nipple is made in the form of a sleeve with conical surfaces at the ends. Chamfers are made in the pipe holders of the first and second rows, made with the possibility of tight interaction with the corresponding conical surfaces of the sealing nipple. The known device is also characterized by the above disadvantages.

In addition, in the prior art it is known equipment wellhead with a parallel suspension of pipes, described in document RU 2485280 C1, publ. 06/20/2013, and selected as the closest analogue, which contains a column flange, a pipe holder of the first row of pipes with a sealing nipple, a pipe holder of the second row of pipes with side channels in communication with the corresponding pipes. The column flange is equipped externally with one or more bends connected with the inner space of the flange, and is configured to rigidly and tightly interact with the first row pipe holder, which is hermetically and rigidly connected to the second row pipe holder. The tube holder of the second row of pipes is provided with a longitudinal hole with a plug that does not communicate with the pipes. In this case, the pipe holder of the first row of pipes is equipped with a channel for communicating this hole with the well. The pipe holders of the first and / or second row of pipes from below are equipped with technological adapters. The known device is also characterized by the above disadvantages. So, there is a need to use a sealing nipple, because the pipeline of the first pipe string is supplied to the pipe holder of the second pipe string.

Thus, the development of new, more reliable and convenient in operation equipment of the wellhead with simultaneous and separate operation of wells with parallel suspension of tubing is required.

SUMMARY OF THE INVENTION

To overcome at least some of the above problems of the prior art, in one aspect of the invention, a double-barreled wellhead reinforcement is provided, comprising:

a crosspiece consisting of a column pipe with a thread in the lower part, an upper mounting flange welded to the upper part of the column pipe, and at least one side outlet welded in the middle of the column pipe,

a cross-pipe holder of the first row of tubing made in the form of a disk with two channels, one of which is made with upper and lower threads, the cross-pipe holder is hermetically mounted on the upper mounting flange and sealed with a metal gasket, while in the cross - the pipe holder provides a lateral branch,

the pipe holder of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, the pipe holder being hermetically mounted on the cross-pipe holder and sealed with a metal gasket, while a lateral outlet is provided in the pipe holder.

In one of the additional aspects of the proposed wellhead double-barrel fittings, containing:

a crosspiece consisting of a column pipe with a lower mounting flange welded to the bottom of the column pipe, an upper mounting flange welded to the top of the column pipe, and at least one side outlet welded in the middle of the column pipe,

a cross-pipe holder of the first row of tubing made in the form of a disk with two channels, one of which is made with upper and lower threads, the cross-pipe holder is hermetically mounted on the upper mounting flange and sealed with a metal gasket, while in the cross - the pipe holder provides a lateral branch,

the pipe holder of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, the pipe holder being hermetically mounted on the cross-pipe holder and sealed with a metal gasket, while a lateral outlet is provided in the pipe holder.

In further embodiments of the invention, an armature is provided in which at least one lateral branch of the cross is made with a flange or thread at its free end.

In one additional embodiment, reinforcement is proposed in which the crosspiece-pipe holder and the upper mounting flange are connected to each other by studs and secured with nuts.

In one additional embodiment, reinforcement is proposed in which the crosspiece-pipe holder is adapted to suspend the first tubing string by means of the lower thread of the channel of the crosspiece-pipe holder through an adapter.

In one of the additional options, a reinforcement is proposed in which a threaded channel of a crosspiece-pipe holder is made with the possibility of a hermetic threaded connection of a pipe by means of an upper thread for carrying out technological operations in the well.

In one additional embodiment, reinforcement is provided in which a sling means is provided in the upper part of the cross-pipe holder.

In one of the additional options, a reinforcement is proposed in which the pipe holder is made with a flange in the lower part, the pipe holder and the cross-pipe holder are connected to each other by studs and secured with nuts.

In one additional embodiment, reinforcement is proposed in which the pipe holder is arranged to suspend a second tubing string by means of a lower thread of the pipe holder channel through an adapter.

In one additional embodiment, reinforcement is proposed in which a second tubing string extends through another channel in a pipe holder.

In one of the additional options, a reinforcement is proposed in which the pipe holder channel is made with the possibility of hermetic threaded connection of the pipe by means of an upper thread for carrying out technological operations in the well.

In one additional embodiment, reinforcement is provided in which a sling means is provided in the upper part of the pipe holder.

In a still further embodiment, reinforcement is proposed in which the lateral branches of the cross-pipe holder and pipe holder are made with the possibility of a flange or threaded connection with a pipeline for the passage of fluid.

In each of the aspects of the claimed invention, a technical result is provided, consisting in reducing installation time and increasing the reliability of installation of wellhead double-barrel valves by changing and simplifying the design, reducing operations when installing valves in the well and rejecting parts and materials requiring replacement during disassembly and subsequent assembly fittings. Thus, increased reliability during operation of the reinforcement and a reduction in the complexity of mounting and dismounting the reinforcement in the well are ensured.

So, the lateral tap of the pipe holder connected to the second column of tubing is moved outside the cross-pipe holder and is made directly on the pipe holder of the second column of tubing. Due to this, an unreliable stuffing box is excluded from the design.

The reliability of the proposed fittings is also ensured by the fact that the connection of the column pipe of the cross and the upper flange of the cross is made one-piece by connecting them with a weld in the manufacture.

Due to the presence in one of the embodiments of the claimed invention, a lifting means on the crosspiece-pipe holder and pipe holder provides increased safety during installation of the reinforcement at the wellhead.

Also, due to the presence of a lower mounting flange on the cross in one embodiment of the claimed invention, the operation of screwing the cross on the casing sleeve previously provided with a flange is excluded. This, in turn, eliminates the requirements for providing torque when screwing the cross on the casing sleeve and the requirement to orient the valve to the working position after screwing, which simplifies the installation of the valve at the wellhead.

In the following description, embodiments of the invention are shown and described in more detail. It should be understood that the invention allows other embodiments, and some of their details are capable of modification in various obvious aspects without departing from the invention, as set forth and described in the following claims. Accordingly, the drawings and description in nature should be considered as illustrative and not as restrictive.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows wellhead double-barrel fittings in a first aspect of the invention.

In FIG. 2 shows wellhead double-barrel fittings in a second aspect of the invention.

The drawings are made on an approximate scale, some elements may be shown larger for clarity, some elements may be shown finer for simplicity. It should be understood that the embodiments illustrated in the drawings are not intended to limit the scope of the appended claims.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

Embodiments are not limited to the embodiments described herein, and other embodiments of the invention will be apparent to a person skilled in the art based on the information set forth in the description and knowledge of the prior art without departing from the spirit and scope of the present invention. The elements mentioned in the singular do not exclude the plurality of elements, unless specifically indicated otherwise.

Turning to FIG. 1, which shows a double-barreled wellhead reinforcement comprising:

a crosspiece 1, consisting of a column pipe with a thread in the lower part, an upper mounting flange 2, welded in the upper part of the column pipe, and at least one lateral branch 3, 4, welded in the middle of the column pipe,

the cross-pipe holder 5 of the first row of tubing made in the form of a disk with two channels, one of which is made with upper and lower threads, and the cross-pipe holder 5 is hermetically mounted on the upper mounting flange 2 and sealed with a metal gasket 8, while in the cross-pipe holder provides a lateral branch,

the pipe holder 10 of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, and the pipe holder 10 is hermetically mounted on the cross-pipe holder 5 and sealed with a metal gasket 9, while a lateral outlet is provided in the pipe holder 10.

Turning now to figure 2, which shows the wellhead double-barrel reinforcement, containing:

a crosspiece 1, consisting of a column pipe with a lower installation flange 16 welded to the bottom of the column pipe, an upper installation flange 2 welded to the top of the column pipe, and at least one lateral branch 3, 4 welded in the middle of the column pipe,

the cross-pipe holder 5 of the first row of tubing made in the form of a disk with two channels, one of which is made with upper and lower threads, and the cross-pipe holder 5 is hermetically mounted on the upper mounting flange 2 and sealed with a metal gasket 8, while in the cross-pipe holder provides a lateral branch,

the pipe holder 10 of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, and the pipe holder 10 is hermetically mounted on the cross-pipe holder 5 and sealed with a metal gasket 9, while a lateral outlet is provided in the pipe holder 10.

Continuing further, in general, in FIGS. 1, 2, additional reinforcement options are described in which at least one lateral branch 3, 4 of the crosspiece 1 is made with a flange or thread at its free end.

In one of the preferred embodiments, the channel of the crosspiece-holder 5, made with thread on the upper and lower end, is made curved in the middle part. Due to this design, the upper opening of the channel in the crosspiece-pipe holder is offset relative to the lower opening in the crosspiece of the pipe holder closer to the outer edge relative to the central part, which makes it convenient to position and mount the pipe holder 10 on the crosspiece-pipe holder 5, while maintaining the center of gravity of the valve as a whole (and cross-holder 5, in particular) essentially in the geometric center of the wellhead double-barrel reinforcement.

In one of the additional options, a reinforcement is proposed in which the crosspiece-pipe holder 5 and the upper mounting flange 2 are connected to each other by studs and secured by nuts, which ensures their reliable fastening.

In one additional embodiment, reinforcement is proposed in which the crosspiece-pipe holder 5 is configured to suspend the first tubing string by means of the lower thread of the channel of the cross-pipe holder 5 through an adapter 7.

In a still further embodiment, reinforcement is proposed in which the threaded channel of the crosspiece-pipe holder 5 is configured to seal the threaded connection of the pipe 13 by means of an upper thread for carrying out technological operations in the well.

In a still further embodiment, reinforcement is provided in which a sling means 19 is provided in the upper part of the cross-pipe holder 5.

In one of the additional options, a reinforcement is proposed in which the pipe holder 10 is made with a flange in the lower part, and the pipe holder 10 and the cross-pipe holder 5 are connected to each other by studs and secured by nuts, which ensures their reliable fastening. It should be understood that the installation of the pipe holder 10 is carried out on the upper surface of that part of the cross-pipe holder 5, where another channel is made without thread. It is in this part of the cross-pipe holder 5 that mounting holes (not shown) are provided for introducing the studs.

In one additional embodiment, a reinforcement is proposed in which the pipe holder 10 is arranged to suspend a second tubing string by means of a lower thread of the channel of the pipe holder 10 through an adapter 7.

In one additional embodiment, reinforcement is proposed in which the second tubing string passes through another channel in the crosspiece-pipe holder 5.

It should be understood that the expression “another channel of the crosspiece-pipe holder 5” characterizes the second channel of the crosspiece-pipe holder 5, which is not threaded at its upper and lower ends, as the channel mentioned first in the text. In a preferred embodiment of the invention, the other channel is made straight, however, there are also possible variants in which the other channel is made with a bend in the middle part similar to the channel of the cross-pipe holder, which is made with a thread at its upper and lower end. This facilitates the possibility of mounting the pipe holder 10, however, it requires the use of more complex joints to suspend the second tubing string on the pipe holder 10 for its free passage in another channel of the cross-pipe holder 5. It should also be understood that the other channel of the cross-pipe holder 5 is made with dimensions that provide free passage of the second tubing string through the channel. Similarly, the diameter of the pipes of the second tubing string should be selected so as to freely pass in the other channel of the cross-pipe holder 5.

In a still further embodiment, reinforcement is proposed in which the pipe holder channel 10 is configured to seal the threaded connection of the nozzle 14 by means of an upper thread for carrying out technological operations in the well.

In a still further embodiment, reinforcement is provided in which a sling means 19 is provided in the upper part of the pipe holder 10.

In a still further embodiment, reinforcement is proposed in which the lateral branches of the cross-pipe holder 5 and the pipe holder 10 are made with the possibility of flange or threaded connection with the pipe 11, 12 for the passage of fluid.

And although at least one lateral branch of the cross is mentioned, in the preferred embodiment of the invention there are two branches 3 and 4, which are located axisymmetrically relative to each other (i.e., essentially at an angle of 180 ° around the circumference formed by the outer periphery of the cross 1). However, other variants of the location of lateral branches 3, 4 are also contemplated. For example, essentially at a right angle to each other, or at an arbitrary angle relative to each other, if the arrangement of the territory near the wellhead requires it. Side bends 3 and 4 are intended for installation by means of a flange or hermetic threaded connection of shut-off and (or) control valves and (or) process pipelines, depending on the mode of operation of the well.

The lateral outlet of the crosspiece-pipe holder 5 may be connected via a flange or threaded connection to the pipe 11 for supplying a fluid pumped into the well, while the lateral outlet of the pipe holder 10 may be connected via a flange or threaded connection to a pipe 12 intended to supply a fluid pumped into the well environment or removal of fluid extracted from the well, depending on the performance of the fittings and the current mode of operation of the well.

The sling means 19 can be a loop, an eye bolt and other devices made with the possibility of slinging the reinforcement as a whole, as well as separately of the cross-pipe holder 5 or pipe holder 10, for example, during transportation and installation of the valve. In a preferred embodiment, the sling means is a plurality (two or more) of sling means.

The lashing means can be made in one piece with the aforementioned wellhead reinforcing elements, on their upper surface and / or side surfaces in the upper part of the corresponding composite elements of the wellhead double-barrel reinforcement. It should be understood that such sling means may protrude from said surfaces or be located in recesses provided in said surfaces so as to be substantially flush with these surfaces.

In a preferred embodiment of the invention, the sling means 19 are removable to eliminate interference and damage when the spider is mounted on the upper end of the pipe-holder cross during the round-trip operations when mounting or dismounting the second tubing string. The possibility of removal is provided by the connection, while ensuring the reliability of fastening, for example, a threaded connection, a protrusion-groove connection, such as a Christmas tree connection, etc.

It should be understood that preferably the sling means are evenly distributed over the surface of the element (cross-pipe holder and / or pipe holder) on which they are mounted. For example, when using two sling means, they are located axisymmetrically relative to each other (i.e., at an angle of 180 ° around a circle formed by an essentially annular periphery of the element or inscribed in it if the element has a different external periphery than the round one). Preferably, the angular position of the two sling means coincides with the angular position of the two lateral branches of the spider 1 at their axisymmetric arrangement. It may also be preferable to arrange the two sling means along a line extending essentially perpendicular to the line coinciding with the axis of symmetry of the lateral branches of the spider 1 for ease of slinging and simplification of balancing of the reinforcement during its installation. However, it should be understood that it is possible to use a larger number of sling means, while still their preferred uniform arrangement. For example, when using three sling means, it is preferable to arrange them through approximately 120 °, when using four sling means, after approximately 90 °, etc. It should be understood that an increase in the number of sling means complicates the production of wellhead fittings and slightly increases the fastening time of the fittings by means of the indicated sling means, however, it favorably affects the ease of installation and reduces labor costs and the time required to balance the reinforcement during its installation in the well, increases the reliability of fastening fittings during its transportation.

As already mentioned, the proposed invention provides for the possibility of installing nozzles 13 and 14, designed for technological operations in the well. It should be understood that the pipe 13 or 14 may end with a valve and (or) a plug (not shown) necessary for such operations, depending on the current mode of operation of the well.

In a preferred embodiment, the wellhead double-barrel reinforcement is characterized by the following parameters: working pressure - 4 MPa, nominal bore diameter of the lateral branches of the crosspiece-pipe holder, pipe holder - 80 mm, conditional bore diameter of the technological (auxiliary) bends of the crosspiece 50 mm, bore diameter of the reinforcement barrel - 222 mm , overall dimensions - 1745 × 835 × 2000 mm, temperature of the working medium - 250 ° С, working medium - water, steam, gas, oil, weight - 852 kg. Double-barrel wellhead fittings are intended for the OTTM-245 production casing in accordance with GOST 632-80, the type of connecting thread to the tubing (lift) pipes in accordance with GOST 633-80 NKT73 and NKT89, the type of flange connection the crosspiece is the pipe holder in accordance with GOST 28919-91, the type of flange connections of lateral and technological branches according to GOST R 54432-2011.

The work of the wellhead double-barrel armature is as follows.

Depending on the design of the casing 15 at a given well, the embodiment of the reinforcement of FIG. 1 or 2. If the sleeve of the casing 15 is not provided with a flange, the option of FIG. 1 is selected and the cross piece 1 is screwed on. If the sleeve of the casing 15 is equipped with a flange 17, which in the preferred embodiment is directly welded to the casing, the option of FIG. 2 and carry out the installation of the cross 1, connecting the flange 16 of the cross 1 with the flange 17 of the casing 15, to seal the connection using a metal gasket 18, connect with studs and fasten with nuts. In the second case, increased requirements for providing torque when screwing the spider onto the casing sleeve and requirements to orient the valve to the working position after screwing are excluded, since the presence of a flange connection simplifies the installation of fittings at the wellhead.

Further, one of the taps 3 of the crosspiece 1 is connected to the surface pipeline of the downhole production collection system (not shown) to divert the downhole medium in the event of a spill or gushing. The first tubing string with the necessary downhole equipment is lowered into the well, after adjusting the column in depth, the crosspiece-pipe holder 5 with the sub 7 turned to the bottom thread of the through channel is mounted on the crosspiece 1, supporting it by means of sling means 19, fixing the first tubing string. Fix the cross-pipe holder 5 on the flange 2 of the crosspiece 1 by means of studs and nuts, sealing the connection with a metal ring 8. Remove the sling means 19 from the cross-pipe holder 5. Next, lower the second tubing string with the necessary downhole equipment, after adjusting the column in depth, the pipe holder 10 s wrapped to the lower thread of the channel, the sub 7 is installed on the cross-pipe holder 5, supporting it by means of sling means 19, fixing the second tubing string. Remove the sling from the pipe holder 5.

Pipes 11 and 12 are secured to the lateral branches of the crosspiece-pipe holder 5 and pipe holder 10 by means of a flange connection, respectively. The valves and other locking elements are controlled, the operating modes of the downhole and ground equipment are set, if necessary, additional pipes 13 and 14 are mounted to the upper ends of the channels of the corresponding cross-pipe holder 5 and pipe holder 10, by means of a threaded connection, the wells are operated using the WEM technology.

Thus, in the claimed invention provides a technical result, consisting in reducing installation time and increasing the reliability of installation by changing and simplifying the design, reducing operations during installation of fittings in the well and refusing parts and materials that require replacement during disassembly and subsequent assembly of the fittings. So, in general, increased reliability is ensured during operation of the reinforcement and a reduction in the complexity of its installation and dismantling at the well.

In the above description of examples, directional terms (such as “above,” “top,” “below,” “bottom,” “top,” “bottom,” etc.) are used for convenient reference to the accompanying drawings. In general, “above”, “upper”, “up” and similar terms relate to the location of ground equipment and the direction from the earth’s surface relative to the wellhead, and “lower”, “lower”, “down” and similar terms relate to the direction to earth surface relative to the wellhead.

For the purposes of the present description, the term “connected” (in all its forms, connect, connecting, connected, etc.) generally means the articulation of two components (electrical or mechanical) with each other directly or indirectly. Such an articulation may be essentially immobile or essentially movable. Such an articulation can be achieved by two components (electrical or mechanical) and any additional intermediate elements that are made in one piece as a single body with each other or with two components. Such an articulation may be constant in essence or may be removable or detachable in essence, unless otherwise specified.

For the purposes of the present description, terms of the form “essentially”, “approximately” or “approximately”, as well as their derivatives, mean slight deviations from the indicated digital range, the indicated location or the indicated position in time and space, for example, standard deviations that can observe when measuring several samples according to the test method or relative deviations from absolute values.

Although exemplary embodiments have been described in detail and shown in the accompanying drawings, it should be understood that such embodiments are illustrative only and are not intended to limit the broader invention and that the invention should not be limited to the particular arrangements and structures shown and described, since various other modifications may be apparent to those skilled in the art.

LIST OF REFERENCE POSITIONS

1 - Cross

2 - Upper mounting flange of the cross

3, 4 - Lateral branches of a cross

5 - Crosspiece pipe holder

6 - Flange

7 - Sub

8, 9 - Gasket

10 - Pipe holder

11, 12 - Fluid piping

13, 14 - Branch pipe

15 - Casing

16 - Lower mounting flange of the cross

17 - Casing Flange

18 - Gasket

19 - Lanyard

Claims (30)

1. Wellhead double-barrel fittings, containing: a crosspiece (1) consisting of a column pipe with a thread in the lower part, an upper mounting flange (2) welded to the upper part of the column pipe, and at least one lateral branch (3, 4) welded in the middle of the column pipe, a cross-pipe holder (5) of the first row of tubing (tubing), made in the form of a disk with two channels, one of which is made with upper and lower threads, moreover, the cross-pipe holder (5) is hermetically mounted on the upper mounting flange (2) and sealed with a metal gasket (8), while in the cross-pipe holder there is a side outlet, pipe holder (10) of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, moreover, the pipe holder (10) is hermetically mounted on the cross-pipe holder (5) and sealed with a metal gasket (9), while in the pipe holder (10 ) lateral branch is provided. 2. The fittings according to claim 1, in which at least one lateral branch (3, 4) of the cross (1) is made with a flange or thread at its free end. 3. The fittings according to claim 1, in which the cross-pipe holder (5) and the upper mounting flange (2) are connected to each other by studs and secured with nuts. 4. The fitting according to claim 1, in which the crosspiece-pipe holder (5) is made with the possibility of suspension of the first tubing string by means of the lower thread of the channel of the crosspiece-pipe holder (5) through an adapter (7). 5. The fitting according to claim 1, in which the threaded channel of the crosspiece-pipe holder (5) is made with the possibility of hermetic threaded connection of the pipe (13) by means of an upper thread for carrying out technological operations in the well. 6. The fittings according to claim 1, in which a sling means (19) is provided in the upper part of the cross-pipe holder (5). 7. The fitting according to claim 1, in which the pipe holder (10) is made with a flange in the lower part, the pipe holder (10) and the cross-pipe holder (5) are connected to each other by studs and secured with nuts. 8. The fitting according to claim 1, in which the pipe holder (10) is arranged to suspend a second tubing string by means of the lower thread of the pipe holder channel (10) through an adapter (7). 9. The reinforcement according to claim 8, in which the second tubing string passes through another channel in the crosspiece-pipe holder (5). 10. The fittings according to claim 1, in which the pipe holder channel (10) is made with the possibility of tight threaded connection of the pipe (14) by means of an upper thread for carrying out technological operations in the well. 11. The fittings according to claim 1, in which a sling means (19) is provided in the upper part of the pipe holder (10). 12. The fitting according to claim 1, in which the lateral branches of the cross-pipe holder (5) and pipe holder (10) are made with the possibility of a flange or threaded connection with the pipeline (11, 12) for the passage of fluid. 13. Wellhead double-barrel fittings, containing: a spider (1) consisting of a column pipe with a lower mounting flange (16) welded to the bottom of the column pipe, an upper mounting flange (2) welded to the top of the column pipe, and at least one side outlet (3, 4) welded in the middle of the column pipe a cross-pipe holder (5) of the first row of tubing (tubing), made in the form of a disk with two channels, one of which is made with upper and lower threads, moreover, the cross-pipe holder (5) is hermetically mounted on the upper mounting flange (2) and sealed with a metal gasket (8), while in the cross-pipe holder there is a side outlet, pipe holder (10) of the second row of tubing made in the form of a tee with a channel made with upper and lower threads, moreover, the pipe holder (10) is hermetically mounted on the cross-pipe holder (5) and sealed with a metal gasket (9), while in the pipe holder (10 ) lateral branch is provided. 14. The fittings according to item 13, in which at least one lateral branch (3, 4) of the cross (1) is made with a flange or thread at its free end. 15. The fittings according to item 13, in which the cross-pipe holder (5) and the upper mounting flange (2) are connected to each other by studs and secured with nuts. 16. The fitting according to item 13, in which the crosspiece-pipe holder (5) is made with the possibility of suspension of the first tubing string by means of the lower thread of the channel of the crosspiece-pipe holder (5) through an adapter (7). 17. The valve according to claim 13, wherein the threaded channel of the crosspiece-pipe holder (5) is made with the possibility of hermetic threaded connection of the pipe (13) by means of an upper thread for carrying out technological operations in the well. 18. The reinforcement according to claim 13, in which a sling means (19) is provided in the upper part of the cross-pipe holder (5). 19. The fitting according to item 13, in which the pipe holder (10) is made with a flange in the lower part, and the pipe holder (10) and the cross-pipe holder (5) are connected to each other by studs and secured with nuts. 20. The fitting according to claim 13, in which the pipe holder (10) is arranged to suspend a second tubing string by means of a lower thread of the pipe holder channel (10) through an adapter (7). 21. The reinforcement according to claim 20, in which the second tubing string passes through another channel in the crosspiece-pipe holder (5). 22. The valve as claimed in claim 13, wherein the pipe holder (10) channel is configured to seal the threaded connection of the pipe (14) by means of an upper thread for carrying out technological operations in the well. 23. Reinforcement according to claim 13, in which a sling means (19) is provided in the upper part of the pipe holder (10). 24. Valves according to claim 13, in which the lateral branches of the cross-pipe holder (5) and pipe holder (10) are made with the possibility of flange or threaded connection with the pipeline (11, 12) for the passage of fluid.

Images