SU1553684A1 - Well set - Google Patents

Abstract

The invention relates to mining and geology and can be used to form extended horizontal drainage or inclined channels within productive horizons. The goal is to increase the efficiency of the device by providing conditions for the hydrotransport of the material. The downhole assembly includes a pressure column (K) 1 with a diverter 2 at the end, a sealing cuff (HM) 3 installed in K 1 over diverter 2, and an executive body. The latter is made in the form of a flexible pressure hose (HP) 4 with a jetting head 5 at the end and a hose 6. The upper part of the hose 6 is laid along K 1. A lateral opening 11 is made below the level of the GM 3 installation, through which the end is inserted into K 1 The part of the hose 6, fastened with the end part of the HP 4. The liquid jets emanating from the nozzles of the jetting head 5 are hydrotreated. By the direct washing method, the rock is brought to the surface. As hydroturbing proceeds, a drainage channel 12 is formed in the reservoir. To improve the conditions for removal of the rock mass from the resulting channel 12, fluid is additionally supplied through hose 6. Fluid pressure should be sufficient to remove the rock mass. 2 Il.

Description

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3, established in K 1 over the diverter, and the executive body. The latter is made in the form of a flexible pressure hose (HP) 4 with a jetting head 5 at the end and a hose 6. The upper part of the hose 6 is laid along K 1. A lateral opening 11 is made below the level of the GM 3 installation, through which the end is inserted into K 1 part of the hose 6, bonded to the end part of the HP 4. The jet of fluid flowing

The invention relates to mining and geology and can be used to form extended horizontal drainage or inclined channels within productive horizons.

The purpose of the invention is to increase the efficiency of the device by providing conditions for the hydrotransport of the material.

FIG. The device is represented in the initial position in FIG. 2, the same, when the hoses are removed through the diverter. /

A downhole drilling hydraulic unit consists of a pressure column 1 with reject Lem 2 on the turn, cuff 3, an executive body made in the form of a flexible pressure hose 4c; hydraulic curtain head 5 at the end and a hose 6.

The sealing cuff 3 can be fixed in the standpipe using a seat 7 with a conical or spherical surface, while the lower part of the cuff 3 is provided with a similar surface to provide a seal when fitting the cuff 3 to the saddle 7. It is also possible to have a fixed fixed cuff 3 in pressure column 1. A flexible pressure hose 4 is installed in the pressure column 1 with the ability to move in it and exit (via a diverter 2. To control the movement of the sleeve 4, it can be used to pull 8, fixed on at the upper end of the sleeve 4 and removed from the column 1 through the lubricator on the surface. The sleeve 4 passes through the sealing cuff 3 with the possibility of moving relative to it, in order to increase

from the jetting nozzles 5, the rock is hydrotreated. By the direct washing method, the rock is brought to the surface. As hydrotreatment occurs in the reservoir, a drainage channel 12 is formed. To improve the conditions for removal of the rock mass from the formed channel 12, fluid is additionally supplied through graft 6. Fluid pressure should be sufficient to remove the rock mass. 2 Il.

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reliability of sealing the cuff 3 can be additionally equipped with annular seals 9 installed in the cuff and interacting with the sleeve 4. The end part of the flexible hose 6 is connected to the end part of the sleeve 4, for example, using i JO jo. The end of the hose 6 is located directly above the jetting drill head 5.

The column is made with a hole 11, and the rest of the hose 6 is brought out through the hole from the column into the annulus 1 to the surface. The hole J1 is located below the fixation level of the sealing member 3. This eliminates the possibility of leakage from the pressure column 1, i.e. from its part located above the cuff 3.

The device works as follows.

After mounting the device on the surface, the unit is lowered into the well, while the upper end of the pressure hose 4 is in its extreme upper position, and the cuff 3 is in the saddle 7. Konya part of the arm 4 with the jetting head 5 and with the end part of the hose 6 is also cavities of the column 1. When fluid is supplied under pressure to the nadmuchtnuyu part of the column 1 due to the porpnev effect due to the fact that the cross-sectional area of the sleeve 4 is greater than the total area

sections of the nozzles of the jetting head 5, the sleeve 4 begins to move in column 1 along the cuff 3, which prevents leakage of liquid from the upper part of the column J into the sub-sleeve, as well as between the cuff and

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sleeve 4. The speed of movement of the arm 4 is adjusted with the help of the rod 8.

Together with the sleeve 4, due to their connection, the hose 6 also moves, which in the annulus is in a free state. The hose 6 passes through the opening 11 in column 1 into the column and, together with sleeve 4, through deflector 2 enters the reservoir. The liquid jet, excluding the jetting drill bit 5 from the nozzles, is used to hydrofuse the rock, which is brought to the surface by the direct washing method. As hydrotreatment occurs in the reservoir, a drainage channel 12 is formed.

In order to improve the conditions for removal of the rock mass from the horizontal or inclined channel 1 2 that is formed, through the hose 6 from the surface from the low pressure pump, additional liquid is supplied with its large flow. Fluid pressure should be sufficient to remove rock mass to the surface. Due to this, the flow rate of the reverse-1-currents of the liquid is significantly increased, which clean the channel 12 from the rock mass. The hose 4 and the hose 6 connected by the bolts 10 are from a sufficiently rigid system in the initial part, which ensures the directional movement of the sleeves through the formation.

After the passage of the channel to a considerable length, when the upper end of the sleeve 4 is located directly above the cuff 3, a gravel mat 53684 is fed through the hose 6 to the bottom under pressure.

Rial or material of this type with increased filtration properties. At the same time, the sleeve 4 is slowly selected from the channel 12 with the help of the cable 8, and the hose 6 is selected at the same speed on the surface. The gravel material can be pumped to maintenance or permanently as the hose 4 and the hose 6 are removed from channel j2. After the channel 12 is completely filled with gravel material, the end parts of the sleeve 4 and the hose 6 are pulled through the deflector 2 back into the column 1, which is turned through a predetermined angle and the next channel is repeated with all the operations repeated.

2Q formula of the invention

A downhole unit containing a pressure column with a diverter at the end, installed in the column above the diverter sealing cuff,

25 flexible pressure hose with a jetting head at the end, mounted with the possibility of moving in the column and interacting with a diverter, due to the fact that, with the help of the device, it is possible to increase the efficiency of the device by ensuring the conditions of hydraulic transport of the material which is laid

35 along the column, wherein the column below the installation level of the cuff is made with a side opening through which the end portion of the hose is inserted into the column, fastened to the end portion 40 of the porous sleeve.

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Claims (1)

Claim A downhole assembly comprising a pressure column with a diverter at the end, a sealing sleeve in the column above the diverter, a flexible pressure sleeve with a hydraulic monitor head at the end, installed to move in the column and interact with the diverter, characterized in that, in order to increase efficiency the operation of the device by ensuring the conditions of hydraulic transport of material, the unit is additionally equipped with a hose, the upper part of which is laid along the column, while the column is below the installation level m the cuff is made with a side hole through which the end suit of the hose is fastened to the column, fastened to the end part of the pressure sleeve.