SU1283389A1 - Hydraulic monitor unit for well operation - Google Patents

Abstract

This invention relates to devices for extracting materials from subterranean formations through wells. The goal is to increase the efficiency of mining at greater depths when supplying compressed air with pressurized water by improving suction conditions. For this, the end part 4 of the outer column (VK) 3 has an air flow regulator. The latter is made in the form of a perforated area (PU) 5 and qi

Description

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of the hinge casing (K) 8. The K 8 is installed above the jet nozzle 2 concentric with the possibility of axial movement along the PU 5. The CZ has its position fixers relative to the PU 5. The length K 8 is greater than the height of the perforation area. The perforation holes are inclined. The entrance of each hole is located on the outer side of the VK 3 below the exit from the inner side of the column. A liquid-gas mixture is fed through the pressure column under pressure. As the column 1 rotates, the mixture stream softens the rock to form a circular extraction chamber. Air enters through the openings of PU 5 in VK 3. 2 C.p. f-ly, 2 ill.

one

The invention relates to mining - and can be used to extract materials from subterranean formations through wells.

The chain of the invention is to increase the efficiency of the extraction of each fossil from great depths when supplied together with pressurized water of compressed air by improving the conditions of suction and raising the slurry.

FIG. 1 shows the unit, about 1tsiy view; in fig. 2 is a diagram of a pulp suction apparatus.

The downhole jetting unit consists of a pressure column 1 with a jetting nozzle 2, an external pulp-fixed stationary column 3, an end part 4 of the said column with a perforated section 5, a receiving chamber 6, a seal 7 and a cylindrical casing 8. The device may also contain an ejector - Nozzle 9 with deflector 10.

The pulping column 3 is mounted concentrically to the pressure column .1, which communicates with the jetting nozzle 2. The end part 4 is made telescopically remotely mounted and rotatably mounted with respect to the main part of the outer column 3. The pressure inner column 1 is rigidly connected to the core part 4, for example, radial vertical plates and mounted for rotation and axial movement relative to the outer column 3. The perforated section 5 is located above the jetting nozzle 2 y in Upper end of the end part 4 under the seal 7. Perforated holes

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five

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five

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Section 5 can be made inclined with the location of the exit of each hole in the cavity of the end part 4 above the entrance from the outer side. The casing 8 is mounted above the jetting nozzle concentric to the end part 4 with the possibility of axial movement along its perforated portion 5 and fixing it at different levels. Fixation is carried out by a known method, for example with the help of pins. The ejector nozzle 9 is installed coaxially with the end part 4 with the nozzle down, and the deflector 10 is made in the form of a cup installed coaxially with the nozzle 9 with a cavity in the shape of a paraboloid of rotation, the end part of the nozzle 9 is made in the form of a truncated cone that faces a smaller base and is located in the cavity cup with an annular gap between the nozzle and the surface of the cavity.

The device works as follows.

After drilling a well to a producing horizon, for example, to a depth of 350 m, pulp and dusting column 3 is placed in said well, which is also a casing. Then, in the said column 3, a pressure column 1 is placed with the end part 4, which contacts the column 3 through a seal 7, made, for example, of wear-resistant porous rubber. In the pressure column 1, a gas-liquid mixture is supplied under pressure, for example, 80 kg / cm, while the bottom is flooded before the washout begins. During the rotation of the pressure column 1, together with the end part 4, the high-permeable stream of gas-liquid mixture formed in the nozzle dissolves the rock to form a circular extraction chamber.

The air entering the chamber together with the jet begins to rise and through the holes of the perforated section 5 enters the end portion

4 and further to column 3. When preparing the unit for operation and testing it at predetermined pressures

and the flow of fluid and air by moving the cylindrical casing 8 and partially blocking the holes in the perforated area

5 select such a total area of the orifice of the openings so that all the air passing through them into the chamber along with the stream passes through them, while the fluid is leaking

with air through these holes would be minimal. Thus, the casing allows adjusting the flow balances of the downhole jetting unit.

With a small length of the end part 4, due to the air entering the outer column 3, the pulp, sucked to the receiving chamber 6, is sucked into it and, together with air, passes through the pulp producing column 3 to the surface.

At a considerable length of the end part 4, to increase the speed of absorption, a nozzle 9 with a deflector 10 is used. The liquid-gas mixture at the exit of the nozzle 9 enters the gap between the latter and the surface of the Deflector 10 and changes direction Upward. The nozzle 9 is located in the cavity of the glass to eliminate the occurrence of countercurrent and suction of the liquid by the jet flowing from said nozzle.

Claims (3)

Invention Formula 1, A downhole jetting assembly comprising an outer pipe string, the end of which is telescopically extendable and rotatably mounted with respect to the main part of the outer column, the inner column is rigid 25 833894 connected to the end part of the outer column and mounted for rotation and axial movement relative to the outer column, 5 jetting nozzle for feeding pressure water installed within the end part, and a slurry suction and lift unit located at the lower end of the end part of the outer column, characterized in that, in order to increase the efficiency of mineral extraction from great depths during supply, together with pressure water of compressed air T5 by improving the conditions of suction and lift of the slurry from great depths, the end part of the outer column is equipped with an air flow regulator made in the form of a perforated 20 section on the end part of the outer column and a cylindrical casing mounted above the jetting nozzle concentrically with the specified column with the possibility of axial movement along the perforated the casing, while the casing is made with locking level of its location relative to the perforated area, and the casing length is made more honeycomb perforation area, 2. The unit according to claim 1, 1, 1 and 2 with the fact that the perforation holes are inclined with the location of the entrance of each hole on the outside of the column below the exit from the inside of the column. 3. Unit pop. 1, characterized by the fact that the node suction and raising the slurry is made in the form of a nozzle connected to the inner column, installed coaxially with the end part of the outer column with the nozzle down, and a deflector in the form of a cup installed coaxially with the nozzle with the internal cavity in the shape of a paraboloid of rotation, while the end part of the nozzle is made in the form of a truncated cone, facing down the bottom, and is located in the cavity of the glass with a gap between the nozzle and the inner surface of the cavity. 35 45 50