SU1388542A1 - Wellhead fittings - Google Patents

Abstract

The invention relates to the mining industry and makes it possible to increase the reliability of the equipment while facilitating its maintenance. The armature includes a tubular head with side outlets, a tubular suspension with a cylindrical channel and a locking member 7 installed in it. It contains a stepped bushing 6 with an outer and outer part concentrically relative to the locking member.

Description

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internal threads that have the same pitch. An o-ring (CC) 18 is placed in the suspension channel. A bar valve 13 is placed at the bottom end of the suspension, pressed with a leaf spring 14 and has axial lateral channels for communication of the pipe 21 with the internal cavity of the locking member 7. With increasing pressure of the gas in the annulus 21 gas hit

one

The invention relates to the mining industry, in particular, to devices used for tying wellheads when operating them with electric submersible or sucker-rod pumps.

The purpose of the invention is to increase the reliability of the equipment while facilitating its maintenance.

FIG. 1 shows the armature, a general view, in FIG. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 2; in fig. 4 shows a section B-B in FIG. 2; in fig. 5 is a sectional view BB in FIG. 2, the extracted valve.

The wellhead armature consists of a tubular head 1 with two lateral outlets 2 and 3, a tubular suspension 4 with a cylindrical channel 5 for connecting tubing pipes and a sleeve 6, which has an internal pitch and external thread having the same pitch.

Inside the sleeve 6 there is a locking member 7, having a turnkey head on top. On the opposite side in the valve body 7 there is an axial hole in which the spring 8 is placed, the ball 9, and also a saddle 10 screwed in, having an axial channel. The spring 8 abuts the ball 9 into the saddle 10, forming a check valve. A radial through hole 1-1 is drilled above the saddle 10 in the valve body 7. A ball 12 is placed under the locking body 7, which transmits longitudinal movements to the locking rod 13 having axial lateral channels and a plate spring 14. On the outer surface of sleeve 6 there are cuffs 15. Wash the ball valve 9 of the check valve into the axial channel armature and enters the pipe part 20. It is blocked by screwing the sleeve 6 into the CC 18. Then the valve 7 is turned off and the rod 13 closes the pipe 21, After repair work, the valve is set to the working position by turning the valve 7 CC 18. 5-yl.

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Separate device assemblies are sealed by sealing rings 16-19. The locking member 7 is directly connected to the pipe portion 20 and the annulus 21.

The device works as follows.

When the pump is operating, the oil flow through the tubing reaches channel 5 and enters through the outlet 2 into the oil pipeline. When the gas pressure in the annulus 21 is increased, it flows around the pressed shut-off rod 13 and the ball 12, enters the axial channel of the seat 10, pushes the ball 9 and through the radial hole 11 goes to the pipe portion 20.

The overlap of the pipe part is carried out by turning the sleeve 6 until it stops in the sealing ring 18. Fixing the sleeve 6 with a key, the valve 7 is turned out completely. When turning the valve 7 by means of a spring 14, the valve 13 closes the annulus 2 K

After carrying out maintenance or repair work, the valve is installed in the working position with the pump in operation by screwing the closure body 7 into the sleeve 6 against the stop into the sealing ring 18. At the same time, the seat 10, abutting the ball 12, depress the stop rod 13 and open access to annulus 21. Fixing the key 7 with a key, turn the sleeve 6 all the way into the sealing ring 16.

Claims (1)

Invention Formula The wellhead armature, which includes a tubular head with lateral branches, a tubular suspension with a cylindrical channel and a locking member installed in it, containing a sleeve with external and internal threads, placed concentrically relative to the locking member, characterized in that reliability of the equipment while at the same time facilitating its technical maintenance; it is equipped with a sealing ring placed in a cylindrical channel of the pipe suspension and a locking rod, a preloaded spring spring and located on the lower end of the pipe hanger, the sealing ring being installed with the ability to interact with the valve body and sleeve in its lowest position, the sleeve being stepped and the external and internal threads have the same pitch, and the valve stem is provided with axial side channels for communication annular space of a well with an internal blockage cavity (Organ, (fKj9.2 dv (pue.S