JPH07502086A - Device and method for removing rock debris from drill holes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 11. The deflection plate has at least one hole extending axially downward therethrough. forming a passage communicating between the first inlet and the focusing tube inlet; enabling at least some of the fluid mixture to be bypassed to the deflection device; The invention according to claim 10, characterized by:

12. The invention of claim 2, wherein said water is injected at a rate of 0 to 10 gallons per minute.

13. The air flow rate is i, ooo standard cubic feet per minute and 600 standard cubic feet per minute. 7. The invention as claimed in claim 6, wherein:

14.When the air pressure is between 100 pounds per square inch and 300 pounds per square inch The invention according to claim 7.

15. Air flow rate is 200 standard cubic feet per minute and 1,100 standard cubic feet per minute. 9. The invention according to claim 8, which is for every minute.

16. Adding a small amount of the impact fluid mixture into the drill tool before removing the foreign object. an additional step of simultaneously injecting at least some of the drill tool to lubricate the drill tool; The invention according to claim 5.

17. Drill ports created by fluid-actuated impact down-the-hole drill tools method for removing rock debris from a drill tool, the drill tool being a drill tool having an axial hole; suspended by the upper end of the drill tool from the drill string; The method includes: a) a separation between the upper end of the drill tool and the lower end of the drill string; The process of placing the b) injecting a flow of a mixture of impact fluid and foreign material into said hole; and C) said mixture. d) feeding the impinging fluid into the separation device in the drill hole; removing substantially all of the foreign material from the mixture before entering the drill tool; and, e) simultaneous discharge of said foreign matter removed from said separation device into said drill pole; f) when said flow of said mixture has ceased; At the same time, the rock debris from the drill hole is prevented from flowing back into the separator. A method for removing rock debris from a drill hole.

18. Drill port made by fluid operated impact downsahole drill tool method for removing rock debris from a drill tool, the drill tool being a drill tool having an axial hole; suspended by the upper end of the drill tool from the drill string; The method includes: a) a separation between the upper end of the drill tool and the lower end of the drill string; The process of placing the b) injecting a flow of a mixture of impact fluid and foreign material into said hole; and C) said mixture. d) feeding the impinging fluid into the separation device in the drill hole; removing substantially all of the foreign material from the mixture before entering the drill tool; and, e) simultaneous discharge of said foreign matter removed from said separation device into said drill hole; f) when said flow of said mixture has ceased; At the same time, it is possible to prevent backflow of the rock debris from the drill hole into the separator. g) adding a small quantity of said air and water mixture to lubricate said drilling tool; simultaneously injecting at least some of the water into the drill tool before removing the water; How to remove rock debris from a drill hole containing.

Specification Apparatus and method for removing rock debris from a drill hole Background of the invention FIELD OF THE INVENTION The present invention relates generally to rock drilling drills, and more particularly to rock drilling drills. A pneumatically actuated impact drill of the type suitable to be inserted into the drill hole to be drilled. Regarding what is commonly known as a "down-the-hole" drill or rDHDJ .

Many applications using down-the-hole drills involve drilling fluids of water or other materials. injection into the pore air supply to improve pore cleaning and stabilization.

Typically, the amount of fluid injected is between about 2.0 gallons per minute and about 15.0 gallons per minute. It can be in the range of every minute. Injecting water into the air stream used for DHD Therefore, the drilling speed decreases considerably for a given pressure. The reduction in drilling speed is due to fluid It can range from 30% to 60% depending on injection rate and pressure. fluid injection Reducing hammer performance in relation to This makes the use of DHD inappropriate in some cases.

The foregoing are known limitations of current down-the-hole rock drilling technology. Ru. Therefore, we would like to offer alternatives that aim to overcome one or more of the above-mentioned limitations. It is clear that it is beneficial to Therefore, I will explain this in more detail later. Provide a suitable replacement with the following characteristics.

Summary of the invention In one aspect of the invention, this comprises controlling the flow of a mixture of impact fluid and other materials. Placed adjacent to the top of the rock drilling tool to receive the impact from the axial hole of the drill string. We offer a device for removing debris from the drill hole, equipped with a cyclone separator. This is achieved by providing The separator removes almost all foreign matter from the impact fluid. The impact fluid is then conveyed through a separator to the drill tool and simultaneously to remove debris collected in the separator and at least some of the impact fluid from the separator. into the annular part of the drill hole. When the flow of impact fluid stops, the separation device A check valve in the separator seals the separator to prevent rock debris from flowing back into the separator. Make it.

In another aspect of the invention, this drills a flow of a mixture of impact fluid and foreign matter. Separate adjacent to the top end of the impact drill tool to receive from the axial hole of the string. A separating device should be installed to remove and collect almost all foreign matter from the impact fluid, and then The impact fluid is sent through the separator to the drill tool, simultaneously separating the collected foreign matter and the separator. of the drill hole to remove rock debris from at least some of the impact fluid from the The flow of impact fluid was stopped by sending it into the annulus and simultaneously sealing the separator. Sometimes rock debris removal, including preventing rock debris from flowing back into the separator. This is accomplished by providing a method of removal from the drill hole.

The foregoing and other aspects will be explained in the following details of the invention when considered in conjunction with the figures of the accompanying drawings. It becomes clear from the detailed explanation.

Brief description of the drawing FIG. 1 shows a fluid trajectory impact down-the-hole drill tool suitable for use with the present invention. It is a longitudinal cross-section of the cleaning device used together with the cleaning device.

FIG. 2 is a horizontal cross-sectional view taken along line 2-2 of FIG.

FIG. 3 is a horizontal cross-sectional view taken along line 3--3 of FIG.

FIG. 4 is a longitudinal sectional view with some parts removed of a check valve suitable for the present invention.

FIG. 5 shows the improved drilling speed for various water injection speeds achieved with the present invention. This is a performance graph.

FIG. 6 shows the improved impulsive fluid flow rate for various water injection rates achieved with the present invention. It is a graph of performance showing.

FIG. 7 shows the improved drilling speed for various impulsive fluid pressures achieved with the present invention. It is a graph of the performance shown.

FIG. 8 shows the improved impulsive fluid flow rate for various fluid pressures achieved with the present invention. It is a graph of the performance shown.

detailed description Referring to FIG. 1, a drill hole cleaning apparatus suitable for use in the method of the present invention A drill hole 1 is shown in which a holder is placed. The cleaning device 3 is a screw, etc. with an upper fitting 5 connected to the lowest end 7 of the drill string 9 in the usual manner. There is. The lower fitting 11 is drilled down the hole 13 by a conventional method such as screwing. Connect device 3 to the back head of. In the equivalent method and I, the lower joint 11 is As long as the position 3 is inside the drill hole 1 and adjacent to the drill 13, the drill 13 without having to connect it to another member in the drill string 9.

As is well known, fluid is passed through the drill string 9 to operate the drill 13. It will be done. In this case, the drill 13 is an impact drill actuated by a pressurized fluid such as air. It is of a type known as an unthe-hole drill. Eventually, the fluid will Drill hole to exit the rill head and transport the rock debris from the borehole”; rise The rock debris that comes out of the drilling is transferred to the particles of the stratum being drilled and to the drill hole. Including water seeping in and foreign matter introduced into the drill 13 via the drill string 9 Sometimes.

Water may be injected into the fluid to increase rock debris removal performance. Ura etc. Foreign matter may be injected to lubricate the tool head. In addition, the drill string The fluid can also transport foreign substances such as rust and scale particles that have penetrated from inside the can. Therefore, the impact fluid is a mixture of air, water, oil and foreign matter including solid particles. There may be.

As used herein, the term "impact" refers to the impact on a drill that penetrates a formation. A type of trill that uses a reciprocating piston to apply impact force; This does not refer to a rotary type drill that uses a rotary abrasive action to generate.

Also as used herein, the term "impingement fluid" refers to the drill piston A pressurized fluid that exerts a reciprocating action.

The vertical casing 15 is fixed to the two-part joint 5 and the lower joint 1, for example by welding. and form an axially extending hollow vortex chamber 7 between them. At upper joint 5 A first inlet 19 extends axially between the axial hole 21 of the drill string and the vortex chamber 17. 7 so that fluid can communicate with it. The first outlet 1''23 in the lower joint 11 is a vortex chamber. 17 and the back head 13 in the axial direction.

A deflection device, generally designated 25, is hermetically secured to the first population 19. It is. As shown in horizontal section in FIGS. 2 and 3, the inlet 19 may have other shapes. It has a circular outline, similar to the deflection device 25, although it is also possible to use a contour of .

Referring again to FIG. a deflection plate 27 extending across the first inlet 19 in a plane perpendicular to .

This plane of the deflection plate 27 is referred to herein as the "radial" plane or the "radial" direction. I'm reading. The deflection device 25 deflects the impact fluid and foreign material mixture, as will be explained later. Diverts the flow from the downward axial direction to the radial and connecting directions.

A hollow focusing tube 29 below the deflection device 25 extends axially through the vortex chamber 17 to form a lower part. Fitting 1] The lower end 31 is in sealing contact with the deflector in the focusing tube 35. Adjacent to the device 25 is an upper #A33 which ends at the end. The focusing tube 29 A first impingement fluid passage 37 between the inner surface 39 of the thing 15 and the outer surface 41 of the focusing tube 29 is formed. The focusing tube 29 also includes a vortex chamber 17 and a first outlet 2 within the focusing tube 29. 3, a second impact fluid passage 43 is formed which communicates with the second impact fluid passage 43 in the axial direction.

A baffle plate 45 is connected to the lower end 47 of the focusing tube 29 within the first impulse fluid passageway 37. extending annularly inwardly and terminating spaced apart from the inner surface 39 for impinging fluid as described below. causing a reversal of the flow.

As described below, a collection gear rally 49 that collects foreign matter separated from the impact fluid is located in the vortex chamber. ] It is formed below the baffle plate 45 in the lower end 47 of 7. Output of collection gear rally A port 51 communicates between the drill hole and the collection gear rally 49 to collect the waste collected therein. Allow some of the material and impact fluid to escape into the annulus of the drill hole 1. Exit 51 may be a simple rTJ type nipple with an open passageway 53 passing through it.

- Two outlets 51 are shown, spaced circumferentially around the vortex chamber 17. Multiple outlets arranged may also be used.

Referring now to the deflection device y125, the deflection plate 27 moves axially through the first inlet 19. It has an upwardly extending conical upper surface 54. As shown in Figures 2 and 3 In addition, a plurality of holes 55 pass through the joint 5. The holes 55 are arranged opposite to each other in the axial direction of the vortex chamber 17. and extends in the radial direction. The inlet 19 is contoured as seen in the horizontal section. It is circular and the hole 55 extends tangentially to the inner surface 57 of the inlet 19 . hole 55 provides fluid communication between the first population 19 and the first fluid passageway 37 .

Fitted axially over the inlet 35 of the focusing tube, the impulse fluid mixture enters the vortex chamber 17. Pass the length downward until it reverses direction at the baffle plate 45. a hollow cylinder extending a sufficient distance to prevent the percussion fluid mixture from entering the focusing tube 35; A field tube 59 is suspended downward from the deflection plate 27 in a sealed connection. single A hole 61 extends axially downwardly through the deflection plate 27 and connects the first inlet 19 and the focusing tube. forming a passageway connecting with the population 35 so that at least some of the impact fluid mixture can bypass the deflection device and a small amount of the impact fluid mixture can be used for purposes such as lubrication. Allows flow directly to the head of the drill tool. single hole 6 The effect would be the same even if a plurality of holes were provided instead of one.

A check valve 63 is fitted to allow only downward axial flow of the impact fluid mixture to pass. 1 in a sealed manner. While the impact fluid is flowing, the valve 63 is normally open. When the flow of percussion fluid ceases, valve 63 closes. Valve 63 is required. The important thing is that when the fluid flow stops, water and other water from the annular part of the drill hole rock debris flows back into the collection chamber 49 through the open channel 53. . Such backflow accumulates in the vortex chamber 17 and rises to the focusing tube 35. If the water flows into the drill tool and the drill starts working again, it will damage the drill. give. This feature allows the drill to remain in the drill hole during periods when the operator is not working. It's weight because it stays down inside.

When the valve 63 is closed, the impact fluid is trapped inside the cleaning device [i13, where water and rocks As the stone chips fill the inside of the vortex chamber 17, the pressure of the impinging fluid becomes equal to the backflow. The impact fluid remains compressed until the backflow stops. Any conventional check valve will suffice It would be a minute. Figure 4 shows one embodiment of such a valve.

Referring to FIG. 4, the check valve 63 is removably mounted on a shoulder 66 on the first inlet 19. It has a hollow tubular body 65 mounted thereon. into the groove on the outer surface of the main body 65. An annular resilient seal 65 contacts and seals against the inner surface 57 of the inlet 19. Main body 65 is predetermined by a retaining ring 69 placed in an alignment groove 71 as is well known. is kept in place. A hollow valve rod 73 is slidably placed inside the hollow main body 65. ing. The valve stem 73 extends axially upwardly toward an axial inlet hole 77 in the body 65. It has an elongated truncated conical upper end 75. The main body 65 is tilted downward therein. It has a beveled truncated conical upper end 75 and a sealed storage 79 having the same shape. seat 79 includes an elastic silicone for alternately sealing and unsealing by pressing against the upper end 75 as described later. A roll means 81 is fitted. Annular bullet mounted on bottom flange 85 of main body 65 A spring means 83 contacts the lower end of the valve stem 73 and contacts the valve stem with the seat surface 79 and the seal 81. The valve stem 73 is pushed upward so as to cause sealing. Therefore, valve 63 are normally closed to the flow of impact fluid. There is a vortex chamber 1 inside the valve stem 73. There is a hollow inlet chamber 87 communicating axially with 7. A plurality of fluid passages 89 connect valve stem 73 extending through the wall of The passages 89 are spaced around the periphery of the frustoconical surface 75. .

It is placed open. In operation, impact fluid acts on top surface 75 and causes valve stem 73 to axially downwardly to remove sealing contact with seal 81, thereby causing The axial hole 21 communicates with the inlet lower part 7 and the inlet chamber 87 through a fluid passage 89. Ru. When the pressure of the impulse fluid is zero, such as when the drill is not operating, the spring 8 3 pushes valve stem 73 into sealing engagement with seat 79, thereby closing valve 63. Jiru. The elastic properties of the spring 83 are such that the interior of the vortex chamber 17 has a residual impact fluid pressure greater than zero. For non-operating drills, the valve closes when the pressure is equal to, but not greater than Completely selected to remain.

An acceptable alternative is to place a check valve at the outlet 51 instead of inside the inlet 19. be.

In operation, a mixture of impingement fluid and foreign material is axially injected into the first inlet 19. flow downwards in the direction and impinge on the upper surface 54, tangentially and radially into the vortex chamber 17. is deflected outwardly in the direction and impinges tangentially against the inner surface 39 of the casing 15. do. Thereafter, the mixture of impact fluids passes through the first impact fluid passage 37 of the vortex chamber 17. vortices and flows downward in a circular pattern, dislodging at least some of the foreign material from the impact fluid mix. Separate from the compound. The material so separated is deposited on the inner surface 39 of the casing 15. flows downwardly toward the collecting gear gallery 49. At the lower end of the vortex chamber 17, The impulse fluid mixture impinges on the baffle plate 45, reversing its flow in an upward direction; Separates more foreign matter from the impact fluid mixture and collects it in collection gear rally 49. let The impact fluid, which now has almost all of the foreign matter displaced, is in the focusing tube population 3. 5 along the outer surface 41 of the focusing tube 29, after which the drill tool flowing down the second fluid passageway 43 through the outlet 23 into the back head 13 of the Then pass through the drill hole as normal.

The method of the present invention uses a DHD38 inch diameter, conical surface, button bit. The product is sold by the Ingersoll Rand Company under the product name 0M. Tested using a down-the-hole drill. A series of test holes allows water entry vs. velocity, impact fluid Various combinations of pressure and percussive fluid flow rates were used to drill into the granite mass, as described below. Got the results.

Test 1 Figure 5 shows the drill head for various water injection rates in gallons per minute (GPM). The drilling speed in feet per hour (FT/HR) for the present invention and This shows the case where there is no. This test uses 200 pounds per square inch (PS) l) was carried out at a fixed impulsive fluid pressure. Curvy people may experience results that do not follow the method of the present invention. It shows. As the water injection rate increases, the drilling rate drops very quickly.

Song 111B shows the results according to the method of the invention.

When applying the method of the invention, the drilling speed is much higher than without the invention. It has been till now. For example, at 5 GPM, the drilling speed according to the present invention is approximately 61 P Compared to this, it is about 29 PPM when the present invention is not used. IOGP M, the drilling speed with and without the present invention is about 55P, respectively. PM and 20FPM. Similarly, at 15 GPM, each drilling speed The degrees are approximately 45 PPM and 16 PPM.

Exam 2 Figure 6 shows the standard cube for various water injection rates in gallons per minute (GPM). Impulse fluid flow rate in feet per minute (SCFM) according to the method of the present invention This shows the case where you do not comply with this. This test is 200 bonds per square inch (PSI) was performed at a fixed impact fluid pressure. Straight line A shows the results not following the method of the invention. ing. As the water injection rate increases, the impact fluid flow rate decreases. Straight line B is , which shows the results of the method of the invention. When applying the method of the present invention, shock flow The body flow rate is much higher at all water injection rates than without the invention. There was even. For example, at 5 GPM, the percussion fluid flow rate according to the present invention is approximately 80 03 CFM, compared to about 5003 CFM without the present invention. Ru. In IOGPM, the impact fluid flow rate with and without the present invention is , 700SCFM and 400SCFM, respectively. Similarly, 15GPM+,: In this case, the respective impact fluid flow rates are approximately 650 SCFM and 375 SCFM. Ru. Even at water injection rates of For the same set point, increased percussion fluid flow rates can be used. Everything The ability to increase the impulsive fluid flow rate over a wide range of water injection rates means that provides the operator with the ability to increase the amount of debris removed. It is important for

Exam 3 Figure 7 shows the results for various pressures of the impulsive fluid in pounds per square inch (PSI). The drilling speed (FT/HR) is shown with and without the method of the present invention. are doing. This test was conducted at a constant water injection rate of LOGPM. Curve A is the main This shows results that are not based on the conventional method. Curve B shows the results obtained by the method of the invention. It shows.

When applying the method of the invention, the drilling speed is higher than that of the impact fluid than without the invention. remains high at all pressures. For example, at 100 PSI The drilling speed according to the present invention is about 15 PPM, compared to that according to the present invention. If not, it is about 5 PPM. In 200PS I, the case according to the present invention and The drilling speeds without dependence are approximately 50 FPM and 25 PPM, respectively. similarly At 300PS I, the drilling speed is about 85PPM and 45PPM, respectively. .

Exam 4 Figure 8 shows the pressure of various impulsive fluids in Bond per square inch (Psi). Figure 2 shows the shock fluid flow rate (SCFM) with and without the present invention. . This test was conducted at a constant water injection rate of LOGPM. Curve A is the curve of the present invention. This shows results independent of method. Curve B shows the results according to the method of the invention. There is.

When applying the method of the invention, the flow rate of the impingement fluid is much lower than that without the invention. remains high at all impact fluid pressures. For example, to 100 PSI In this case, the percussion fluid flow rate according to the present invention is about 200 SCFM, compared to The amount not according to the present invention is about 1503 CFM. Shock at 200PSI The fluid flow rates are 700 SCFM and 400 SCFM, respectively. Similarly, 3 At 00PS r, the impact fluid flow rates are approximately 1,200 SCFM and 80 SCFM, respectively. 0SCFM.

In operation, the device of the present invention removes water and oil from inside the drill string. and removed a significant amount of foreign matter from an impact fluid mixture containing solid particles. This way Such removal may result in significantly greater damage than would be achieved without such removal. resulting in improved drilling speed, while eliminating the presence of foreign objects in the drill hole during The benefits of debris removal attributed to this were preserved.

Although the invention has been illustrated and described in accordance with a preferred embodiment, other modifications and variations may occur. It is recognized that the invention can be made without departing from the claimed invention.

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Claims (18)

[Claims] 1. Drill hole made by fluid actuated down-the-hole drill tool a device for removing rock debris from a The drill tool is suspended from the drill string by the upper end of the drill tool. The device is a) a separating device, said separating device being located adjacent said upper end of said drill tool; and the flow of a mixture of working fluid and foreign matter from the axial hole of the drill string. and remove substantially all of the foreign material from the impact fluid at the lower end of the separator. separating and collecting and then passing the working fluid through the device to the drill tool. and simultaneously transporting at least some of the collected foreign matter and the working fluid to the separating device. The rock debris is removed by sending the rock debris from the base to the annular part of the drill hole. A device for removing rock debris from a drill hole. 2. Drill hole made by fluid actuated down-the-hole drill tool The drill tool is a drill tool for removing debris from the device is adapted to be suspended by the upper end of the drill tool from the drill ring; comprises a separating device and passage means; a) the separating device is placed adjacent to the upper end of the drill tool to receiving the flow of the mixture of working fluid and foreign matter from the axial hole of the string, and separating the Separate and collect substantially all of the foreign material from the working fluid at the lower end of the device; the working fluid is directed through the device to the drill tool, and at the same time Collected foreign matter and at least some of the working fluid are removed from the separation device through a drill hole. b) the passage means is configured to transport the rock debris to an annular portion of the separator; an axial hole in the drill string extending through the axial hole in the drill tool; at least some of the working fluid mixture deflects the deflection device. A device for removing rock debris from a drill hole, characterized in that Place. 3. Drill hole made by fluid actuated down-the-hole drill tool a device for removing rock debris from a The drill tool is suspended from the drill string by the upper end of the drill tool. The device is equipped with a separation device and a a) the separating device is placed adjacent to the upper end of the drill tool to receiving the flow of the mixture of working fluid and foreign matter from the axial hole of the string, and separating the Separate and collect substantially all of the foreign material from the working fluid at the lower end of the device; the percussion fluid through the device to the drill tool; Collected foreign matter and at least some of the working fluid are removed from the separation device through a drill hole. b) the valve is connected to the separator to remove the rock debris; When the flow of the working fluid stops, rock debris passes through the separation device. be sealed to prevent backflow into the A device for removing rock debris from a drill hole, characterized by: 4. The invention according to claim 1, wherein the working fluid is air. 5. Any one of claims 1, 2, 3 or 4, wherein the foreign matter is substantially all water. The invention described in . 6. The foreign material is a mixture of solid particles and water from the axial hole of the drill string. The invention according to any one of claims 1 to 5. 7. The foreign matter is a mixture of oil and water with solid particles from the axial hole of the drill string. The invention according to any one of claims 1 to 6, which is a product. 8. Drill hole made by fluid-actuated impact down-the-hole drill tool a device for removing rock debris from a The drill tool is suspended from the drill string by the upper end of the drill tool. The device is a) in fluid communication with an axial hole of said drill string; b) inlet means for receiving a flow of a mixture of working fluid and foreign matter from a directional hole; and b) said inlet. means is in fluid communication with the working fluid to separate the foreign matter from the working fluid; c) a separating device for feeding the drill tool through said device to said drill tool; a collection device adjacent the end and in fluid communication with the separation device to collect the foreign material; d) being in fluid communication with the upper end of the drill tool to separate the working fluid from the e) a first outlet means for conveying from the device to the drill tool; and e) in the collection device. , drilling at least some of the collected foreign matter and the working fluid from the device; second inlet means for conveying into the annulus of the hole to remove debris from the device; f) in the separating device, when the flow of the impact fluid stops, the debris is separated from the and valve means for sealing said separation device against backflow into the device. A device for removing rock debris from a hole. 9. Drill hole made by fluid-actuated impact down-the-hole drill tool a device for removing rock debris from a The drill tool is suspended from the drill string by the upper end of the drill tool. The device is a) an upper fitting connecting said device to the drill string; and b) a down-the-hold. a lower fitting connecting the device to the back head of the rill; c) a vertical casing extending axially between the upper and lower joints and forming a hollow vortex chamber; with d) an upper joint for directing fluid axially between the drill string and the vortex chamber; a first inlet for communicating and receiving a mixture of impact fluid and foreign matter from the drill string; and, e) a first outlet providing axial fluid communication between the vortex chamber and the backhead; and, f) directing the flow of the impulsive fluid mixture from a downward axial direction at the first inlet; tangentially outwardly deflecting the impingement fluid mixture into the interior of the casing. tangentially against the surface, and then flowed downward through the vortex chamber, causing the front g) a deflection device for separating at least some of the foreign material from the impingement fluid; below the deflection device, extending axially through the vortex chamber and sealing to the lower joint. and an upper end terminating adjacent said deflection device in a focusing tube inlet. a hollow focusing tube, the focusing tube connecting the inner surface of the casing and the outer surface of the focusing tube; forming a first impulse fluid passageway between the surface and a second impulse fluid passageway within the focusing tube; , the second outlet fluid passage communicating axially between the vortex chamber and the first outlet; ,Also h) connected to said lower end in said first working fluid passage of said focusing tube, said spaced from the inner surface of the casing and below the working fluid mixture. The impact fluid is reversed to a direction flow toward the focusing tube. of the foreign matter separated from the impact fluid. a baffle plate forming a collection gallery below for foreign matter; i) said foreign matter and said workpiece; At least some of the percussion fluid exits the collection gallery and enters the annulus of the drill hole. a collection gallery outlet to allow flow into the shaped section for removal of said debris; , j) at said first inlet, through which only downward axial flow of the working fluid can pass; Check valve and A device for removing rock debris from a drill hole. 10. The deflection device further includes: a) within said first inlet and in sealing contact with an inner surface of said first inlet; a conical upper surface extending axially upwardly within the first inlet; a deflection plate, b) said inner surface of said first inlet when seen in horizontal cross section through said deflector plate; tangentially disposed with respect to a surface and connecting the first inlet and the first impulse fluid passageway; c) a plurality of holes forming a plurality of impact fluid passages communicating between the deflector plate; the deflection plate extends downward in the axial direction of the deflection plate and covers the inlet of the focusing tube. and nested a sufficient distance so that the working fluid mixture extends the length of the first working fluid passageway. preventing the working fluid mixture from entering the focusing tube until after it has passed through the The invention according to claim 9, further comprising a hollow shielded tube. 11. the deflection plate has at least one hole extending axially downward therethrough; forming a passage communicating between the first inlet and the focusing tube inlet; enabling at least some of the fluid mixture to be bypassed to the deflection device; The invention according to claim 10, characterized by: 12. 3. The invention of claim 2, wherein said water is injected at a rate of 0 to 10 gallons per minute. 13. The air flow rate is 1,000 standard cubic feet per minute and 600 standard cubic feet per minute. 7. The invention as claimed in claim 6, wherein: 14. When the air pressure is between 100 pounds per square inch and 300 pounds per square inch The invention according to claim 7. 15. Air flow rate: 200 standard cubic feet per minute and 1,100 standard cubic feet per minute 9. The invention according to claim 8, which is for every minute. 16. Adding a small amount of the impingement fluid mixture into the drill tool prior to removal of the foreign object an additional step of simultaneously injecting at least some of the drill tool to lubricate the drill tool; The invention according to claim 5. 17. Drill holes made by fluid-actuated down-the-hole drill tools method for removing rock debris from a drill tool, the drill tool being a drill tool having an axial hole; suspended by the upper end of the drill tool from the drill string; The method includes: a) a separation between the upper end of the drill tool and the lower end of the drill string; The process of placing the b) injecting a flow of a mixture of working fluid and foreign matter into said hole; and c) said mixture. d) feeding the impinging fluid into the separation device in the drill hole; removing substantially all of the foreign material from the mixture before entering the drill tool; and, e) simultaneous discharge of said foreign matter removed from said separation device into said drill hole; f) when said flow of said mixture has ceased; At the same time, it is possible to prevent backflow of the rock debris from the drill hole into the separator. A method for removing rock debris from a drill hole. 18. Drill holes made by fluid-actuated down-the-hole drill tools method for removing rock debris from a drill tool, the drill tool being a drill tool having an axial hole; suspended by the upper end of the drill tool from the drill string; The method includes: a) a separation between the upper end of the drill tool and the lower end of the drill string; The process of placing the b) injecting a flow of a mixture of working fluid and foreign matter into said hole; and c) said mixture. d) feeding the impinging fluid into the separation device in the drill hole; removing substantially all of the foreign material from the mixture before entering the drill tool; and, e) simultaneous discharge of said foreign matter removed from said separation device into said drill hole; f) when said flow of said mixture has ceased; At the same time, it is possible to prevent backflow of the rock debris from the drill hole into the separator. g) adding a small quantity of said air and water mixture to lubricate said drilling tool; simultaneously injecting at least some of the water into the drill tool before removing the water; How to remove rock debris from a drill hole containing.