SU1749609A1 - Device for hydraulic treatment of massif through wells - Google Patents

Abstract

Use: for the action of hydraulic medium and hydraulical waves on the array to break its continuity, weaken, relieve internal stress, form internal cavities, increase degassing and moistening, prevent sudden emissions and rock bursts. SUMMARY OF THE INVENTION: The device comprises a hollow body covering its collector mounted for rotation around the body. The housing and the collector have at the end of the outlet aperture and rows of through radial side openings with nozzles. DogSHLnite is made at the end of the body. openings that are located in rows of concentric circles that are remote from the longitudinal axis of the housing and from each other at a distance not less than the diameter of the outlet opening of the housing. In the shank, the complementary output channels are made, one for each row, which have an accelerating section with the shape of the generator surface, which is determined from the tractor1 equation. The rows of concentric circles are located coaxially with the outlet openings of the cone. 9 il. cl

Description

The invention relates to mining and can be used to influence a solid medium or hydraulic waves on an array of coal or other rocks in order to break its continuity, weaken, relieve internal stress, or form internal cavities, increase the efficiency of degassing and wetting, prevent sudden blowouts and rock bursts.

A device for forming unloading cavities in an array is known, comprising a hydraulic lock and a hollow body, which is a body of rotation. The body is made in the form of a cylinder and is equipped with a valve connected to the hydraulic lock with a choke made in the form of pipes of different diameters, concentrically located one inside the other.

The drawback of the device is the low erosion efficiency of the wall and the bottom of the well, due to the presence of one outlet orifice in the butt of the body, which allows to ensure stationary, without pulsation, the outflow of the fluid, which makes it impossible to carry out effective softening of the array in all directions or erosion large sizes, since the relatively small surface area of the borehole — the bottom — is exposed to the stream of fluid exiting the device. In addition, the total power of the pulse energy

u o o o y

The oscillations of the fluid created by this device are not high enough.

A device is known for hydraulic treatment of a rock mass through wells, whose hollow body is made in the form of a body of rotation with an outlet in its face and rows of through radial side holes and a housing covering the body with a shank, having inclined nozzles on the side surface and an outlet channel in shank and mounted rotatably around a longitudinal axis.

The presence of radial side openings of the casing and openings of the collector with nozzles fixed by them, rotating around the casing, provides a pulsating effect of the liquid jets on the borehole wall, which increases the processing efficiency of the rock mass.

The drawback of the device is low treatment efficiency of the bottom hole in the mountain massif, due to the fact that the bottom hole is affected by stationary, without pulsation, the outflow of fluid from the hole at the end of the device.

The purpose of the invention is to increase the processing efficiency of the rock mass by providing flushing of the bottom hole with pulsating jets of fluid.

The goal is achieved by the fact that the device includes a hollow body with an outlet aperture m at its end and rows of through radial side holes and a collector with a shank enclosing the body, having inclined nozzles on the side surface and an outlet channel in the shank and mounted with the possibility of rotation around the longitudinal axis, in the butt of the body there are additional holes arranged at least two in each row of concentric circles distant from the longitudinal axis of the body and from each other for a distance of at least the diameter of the outlet of the housing; moreover, additional outlet channels are made in the tail, one for each row of the mentioned concentric circles, located coaxially with the outlet openings of the housing, with the tail outlets having an accelerating portion from the tractor's equation, and its length is 0.45 of the diameter of the exit shank channel.

At the end of the body of additional holes, at least two in each row of concentric circles distant from the longitudinal axis of the body and from each other at least

the diameter of the outlet of the housing, in the shank of additional outlet channels, one for each row of the mentioned concentric circles arranged coaxially with the outlet openings of the housing, ensures that the bottom of the well is flushed with pulsing jets of liquid from the end of the device, which increases the impact of the liquid jets on the entire area of the bottom hole and improving the processing efficiency of the mountain.

The execution of the exit channels of the shank with the accelerating section, the shape of the forming surface of which is determined from the tractor equation, provides a significant decrease in the flow resistance and turbulence of the flow of the fluid jet, an increase in the energy intensity of its impact on the bottom hole, as well as a decrease in the wear of the outlet channel surface contained in a liquid. The length of the booster section is 0.45 of the diameter of the output channel of the shank, determined from the equation of the tractor:

x aln {(a +

U2) / U1 where a is the maximum radius of the accelerating section, mm;

y is the coordinate value of the overclocking area, mm.

The main determining parameter of the design of the device is the diameter of the outlet channel of the reservoir shank d, which characterizes the magnitude of the fluid flow rate and the energy intensity of the effect of the jet of fluid on the bottom hole. Placing additional holes in the end of the body on concentric circles distant from the longitudinal axis of the body and from each other at a distance not less than the body outlet orifice is feasible provided that the maximum radius of the accelerating section is equal to the main parameter — the diameter of the outlet channel of the collector shank and subject to that 0 d / 2.

FIG. 1 shows a device, a longitudinal section; FIG. 2 is a view A of FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 - section G-Gnafig. one; fig b-section dd in fig. one; in FIG. 7, node I. FIG. 1 (interface of the outlet of the housing and the accelerating portion of the outlet channel of the collector shank); in fig. 8, 9 - the same options.

Example 1. A device for hydraulic processing of a rock mass consists

from the bearing housing 1, in the bearing units 2 of which a collector 3 is installed. covering the hollow body 4. Additional outlet holes 5 are made at the end of the body 4. The output channel 5 is coaxially with the output holes 5 with the acceleration section 7, on the side surface of the hollow body 4 there are several rows of bore holes 8, and on the lateral surface of the collector there are corresponding nozzles 9. Additional outlets 5 are not less than two in each row 10 concentric Steps distant from the longitudinal axis of the body 4 and from each other at a distance not less than the diameter of the body outlet orifice. The acceleration section 7 of the output channel 6 has the shape of a generatrix surface, which is determined from the tractor's equation, and its length is 0.45 times the diameter of the output Channel 6 shank:

x aln (a + Va2-y2) / y wherea-d andO y d / 2,

In this example, one row of 10 concentric circles are made. The collector 3 is rotatably mounted around the longitudinal axis of the housing 4.

EXAMPLE 2 At the end of body 4, two rows of 10 concentric circles (Fig. 9) are provided with three outlet openings 5. Rows 10 of concentric circles are located at least one distance from the longitudinal axis of the housing 4 and from each other the diameter of the outlet 5 of the housing 4; Moreover, in the shank of the collector 3 one outlet channel b is made for each row of 10 concentric circles arranged coaxially with the outlet openings 5 of the housing 4. The placement of additional holes in the end of the housing 4 is on several rows of 10 concentric The arms remote from the longitudinal axis of the housing 4 and from each other at a distance not less than the diameter of the outlet of the housing are feasible provided that the maximum radius of the acceleration section 7 of the output channel 6 is equal to the basic design parameter — the diameter of the output channel b of the collector’s stem 3 and that 0 d / 2.

The device works as follows.

Water from a fire stand under pressure from a pumping unit (not shown) enters the cavity of housing 4 and through radial 8 and outlet openings 5 of housing 4 into output channels 6 of collector 3 and flows to the bottom of the chest and to the side surface of the well. At the same time, due to the jets of water coming out of the nozzles 9, 5, the collector 3 rotates, blocking one and opening the other outlet openings 5 in the end of the housing 4, from which the water outflow from the outlet channels 6 of the collector 3 of the device is pulsed and

0 allows you to alternately affect the bottom of the chest and the borehole wall along its entire perimeter. By regulating the pressure of the fluid entering the device through the direct valve of the pump unit, the rotational speed of the collector 3 is changed (the higher the pressure, the greater the speed and vice versa). The presence of the booster section 7 in the output channels b located in the shank of the collector 3, due to a decrease in the turbulence of the flow, significantly increases the energy content of the jet.

The technical advantages of the proposed device as compared with the prototype are an increase in the processing efficiency of the proud array due to the even and periodic flushing of the bottom of the well with pulsating jets of liquid, as well as productivity by intensifying the bottom hole fracture.

0 wells by reducing flow turbulence.

Claims (1)

Invention Formula 5 A device for hydraulic processing of an array through wells, including a hollow body with an outlet in its end and a series of through radial side holes and enclosing the body 0 a shank collector having inclined nozzles on the side surface and an outlet channel in the shank and mounted rotatably around its longitudinal axis, characterized in that 5 in order to increase the processing efficiency of the array by ensuring that the pulsing liquid is washed by the fluid, additional holes are made in the butt of the body, which are located at least two in each row of concentric circles distant from the longitudinal axis of the body and other at a distance not less than the diameter of the outlet of the housing, while in the shank 5, additional output channels are made, one for each row of said concentric circles, located coaxially with the outlet openings of the housing, the outlet channels of the shank having an accelerating portion, the shape of which forms the surface of which is defined to be 0.45 from the output diameter equations of the tractor, and its length of the shank. & -, / J 4 -Ij sh, .. -J b -J / Type A g l one Sorts -J 8 / G 8 d Figure 1 B 5 FIG. b FIG. 7 Type A FIG. 9