RU199106U1 - Hydraulic packer valve - Google Patents

Abstract

The utility model relates to the oil and gas industry and is intended for the installation of hydraulic packers. The valve for installing a hydraulic packer contains a body, a saddle installed inside the body, an overlapping insert consisting of an impact head, in the axial channel of which an upper rod is located, a tip connected to the upper rod by means of a sub, a lower rod connected to the tip, shear pins fixing a tip on the lower stem in the lower position, and a shutter element attached to the lower stem. The impact head is made with the possibility of axial movement relative to the upper rod and is equipped in the lower part with a nut installed with the possibility of interaction with the shoulder in the upper part of the upper rod during axial movement of the impact head. The lower stem contains alignment holes covered by the tip and communicating with the axial channel of the lower stem. EFFECT: provision of extraction of the gate element to the surface after installation of the hydraulic packer, with equalization of pressure above and below the valve body, as well as providing the possibility of creating shocks in order to overcome obstacles when lowering the gate element into the well. 2 ill.

Description

The utility model relates to the oil and gas industry and is intended for setting hydraulic packers.

Known tool for planting a packer, containing combined with the tool landing nipple, housing, saddle, ball, sleeve, cams, spring, spring-loaded sleeve. The cams interact with the seat and spring loaded bushing. The tool contains an alignment bushing with a through hole, which is fixed in the housing with a shear screw. Alignment holes are made in the housing and in the bushing. Equalizing and spring-loaded bushings and a seat are provided with seals (RU 2205939, 10.06.2003).

Known coupling and saddle with a ball, fixed with shear screws, installed in the lower part of the hydraulic packer barrel. When the pressure in the pipe string rises to the calculated one, the screws are cut off and the seat with the ball falls down (RU 68055, 10.11.2007).

The disadvantage of the known devices is the impossibility of extracting the gate element (dropped from the mouth of the ball) to the surface after the packer is installed.

The technical result is to ensure the extraction of the gate element to the surface after installing the hydraulic packer, with equalizing the pressure above and below the valve body, as well as providing the possibility of creating shocks in order to overcome obstacles when lowering the gate element into the well.

The technical result is achieved in a valve for installing a hydraulic packer, containing a body, a saddle installed inside the body, while, according to the utility model, the valve includes an overlapping insert consisting of an impact head, in the axial channel of which an upper rod is located, a tip connected to the upper rod when using a sub, a lower rod connected to the tip, shear pins fixing the tip on the lower rod in the lower position, and a shutter element fixed on the lower rod, while the impact head is made with the possibility of axial movement relative to the upper rod and is provided with a nut in the lower part, installed with the possibility of interaction with the shoulder in the upper part of the upper rod during the axial movement of the impact head, the lower rod contains alignment holes, covered by the tip and communicated with the axial channel of the lower rod.

In addition, upper and lower radial holes are made in the striking head, communicating with the axial channel of the striking head.

FIG. 1 shows a valve for setting a hydraulic packer; FIG. 2 - the valve during the lifting of the overlapping insert to the surface.

A valve for installing a hydraulic packer consists of a body 1, a seat 2 and an overlapping insert with a gate element.

The overlapping valve insert includes:

- impact head 3, performing the function of a jar, with an axial channel 4, upper 5 and lower 6 radial holes,

- a nut 7 connected to an impact head 3,

- the upper rod 8, located in the axial channel 4 of the impact head 3 and in the nut 7, the upper rod 8 has a collar 9 in the upper part,

- sub 10 connecting the upper stem 8 with the tip 11,

- tip 11,

- the lower rod 12 with an axial channel 13 and alignment holes 14, connected with the tip 11,

- shear pins 15 fixing the tip 11 on the lower rod 12 in the lower position;

- shutter element 16, attached to the lower rod 12.

The valve for installing a hydraulic packer works as follows.

The assembly of late-night equipment, together with the valve body 1 and the valve seat 2, is lowered to the required depth on the tubing string, a hydraulic packer is installed above the valve body 1 (not shown in the figure).

The overlapping insert is connected to a coiled tubing (CT) or to a geophysical cable and is lowered into the well to be installed in the valve body 1 and thereby overlap the passage channel for installation of the hydraulic action packer located above. If, when running into the well, the overlapping insert encounters any obstacle, for example, salt deposits, asphalt-resin-paraffin deposits (ARPD), etc., the compressive load on the coiled tubing or cable increases, then the coiled tubing or cable is lifted up, while the impact head 3 together with the nut 7 move upward relative to the upper rod 8. There is communication of the holes 5 and 6 of the impact head 3, which makes it possible to avoid the effect of pistoning of the well fluid in the tubing. Next, the coiled tubing or cable is dropped down, and the nut 7 hits the sub 10, the end surfaces of which are provided with protrusions. As a result of the blows, the obstacle is broken through by the gate element 16. The lifting and dropping of coiled tubing or cable is carried out until the obstacle passes.

After passing the obstacle, the overlapping insert is installed into the valve body 1, while the shutter element 16 is installed in the seat 2, blocking the passage channel. Then, by applying pressure, a hydraulic packer is set (not shown in the figure).

After installing the hydraulic packer, the overlapping insert (Fig. 2) is lifted on coiled tubing or cable to the surface: the impact head 3 with the nut 7 move upward relative to the upper rod 8, then the nut 7 rests against the collar 9 in the upper part of the upper rod 8 and pulls it together with sub 10 and tip 11 up. In this case, shear pins 15 are sheared, and the tip 11 moves to the upper position, communicating the alignment holes 14 of the lower stem 12 with the space above the valve, equalizing the pressure above and below the valve body through the axial channel 13 of the lower stem 12, which facilitates the removal of the overlapping insert to the surface. After equalizing the pressure, the lower rod 12 with the shutter element 16 also moves upwards together with the impact head 3.

Claims (2)

1. A valve for installing a hydraulic packer containing a body, a saddle installed inside the body, characterized in that the valve includes an overlapping insert consisting of an impact head, in the axial channel of which an upper stem is located, a tip connected to the upper stem by means of a sub, a lower stem connected to the tip, shear pins fixing the tip on the lower rod in the lower position, and a shutter element fixed to the lower rod, while the impact head is made with the possibility of axial movement relative to the upper rod and is equipped in the lower part with a nut installed with the possibility of interaction with with a shoulder in the upper part of the upper stem during the axial movement of the impact head, the lower stem contains alignment holes, covered by the tip and communicating with the axial channel of the lower stem. 2. The valve according to claim 1, characterized in that upper and lower radial holes are made in the impact head, communicating with the axial channel of the impact head.

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