Drilling unit, method for drilling grooves and device for grooving

FIELD: mining.

SUBSTANCE: grooving device for use with drilling rig for drilling multiple parallel crossing boreholes close to each other in such a way that the groove is formed in solid material as rock, stone mansonry or concrete. Grooving device includes guiding part connected to body part by at least one bracket. Guiding part is located in previous drilled borehole; and body part and impact-rotational instrument together form a changeable volume chamber that contains flushing liquid medium that absorbs the transmission of waves form impact stress of impact device to grooving device.

EFFECT: increase of device service life due to reduction of impact waves influence on body structure and guiding part of the device.

23 cl, 15 dwg

 

The technical FIELD of the INVENTION

The present invention relates to the drill unit and method of cutting grooves and apparatus for cutting grooves. When drilling slots many are drilling holes close to each other to form a groove in the rock. The groove can be performed in rocky surface or in rock by drilling many holes in the surface with a step, essentially equal to the diameter of the holes. During the drilling of the slots you will need a special device for cutting grooves for guiding the drilling tool along a previously drilled borehole. The purpose of the invention is described in more detail in the preambles of the independent claims.

BACKGROUND of the INVENTION

Drilling slots is a method used in underground and surface mining operations. When drilling grooves boreholes consistently Buryats close to each other, and when a new hole Buryats next to the previous drilled a hole, a wall of rock between the holes is destroyed. In this way perform continuous groove of the bore-holes with consistent drilling. Such continuous grooves are elongated cavity can be used at ground blasting for the protection of buildings near the site of blasting. With this method prevents the propagation of shock waves outside the site blasting. In the underground gornegrat cavities or grooves can be drilled in solid rock, for example at the bottom of the tunnel for primary education open space that can be expanded destroyed the rock for blasting. This is necessary, for example, when the sinking of the cleaning formulation or drifts.

When the rocks are drilling a single hole, the side wall of the hole remains intact, and radial forces acting on the wall of the borehole on the drill bit, tend to offset each other. However, when drilling grooves, when many holes do in a row for the formation of the groove, the wall of the rocky ground between the previous drilled a hole and new drilling a hole is destroyed in the process of drilling a new hole, and radial forces acting on the partially formed by the circumference of the wall of the new borehole on the drill bit, create ravnodeystvuiushchey directed to the previous drilled hole.

Therefore, the drill bit during drilling of a new borehole tends to be displaced radially from the required trajectory under the action of applied thus the combination of radial forces. To prevent displacement of the drill bit in the usual practice to use a guide rod attached parallel to the drill rod and having a diameter essentially equal to or slightly less than the diameter of a running bore-holes. Prior to drilling a new hole guide Sterge the insert in the previous drilled hole near where the new hole, stabilizing support the drill rod. When placing the guide rod in the previous drilled hole prevents displacement of the bearings of the drill rod, even when large radial forces acting on the drill rod in the process of drilling a new hole.

In U.S. patent No. 5690184 described drill unit for drilling slots. The drilling unit includes a guide rod fixed to support the drill rod at the front end of the beam supply, while the guide rod is held to the front end of the beam supply. Thus, the drilling unit is designed with a design only for drilling slots.

In published PCT application WO 99/45237 described device for cutting grooves, which includes a downhole drilling machine inside the Cabinet of the device and parallel to the guide tube, placed on the bracket on the hull. One disadvantage of the described device of the cutting grooves is that the shock wave generated by the percussion device, drilling machines, are transmitted not only to the instrument, but also on the design of the housing and guide tube. Wave voltage can cause serious damage to the shell and guide device of the cutting grooves. This disadvantage is especially true for applications of top drummer.

BRIEF description of the INVENTION

p> The aim of the invention is to provide a new and improved drill unit and method of drilling slots and additionally a new and improved device for cutting grooves.

Drill unit according to the invention is characterized by the fact that between the box-shaped part of the device cutting grooves and the tool placed at least one axial volume chamber containing the fluid for damping the transmission of shock waves voltage from the percussion device-to-device cutting the slots.

Device for cutting grooves according to the invention differs in that it is provided with at least one axial volume chamber between the carcass part and the tool and contains at least one flow channel for directing fluid into the chamber, the fluid medium in the chamber is designed to transfer axial forces from the tool Cabinet part.

The method according to the invention is distinguished in that it includes the stages of the power transmission supply to the device body, the cutting of grooves in the direction of drilling through a fluid medium, at least one axial volume chamber between the tool and Cabinet part and damping transmission of shock waves voltage from the percussion device-to-device cutting grooves through the fluid in at least one axial the lines of the camera.

According to the present invention a device for cutting grooves contains the axial volume chamber containing a flushing fluid environment for damping transmission of shock waves voltage from the percussion device-to-device cutting grooves. Accordingly, the shock wave voltage transmitted to the instrument, but transfer them to your device for cutting grooves, attached to the instrument, campfires. Additionally, during drilling, the feed force in the direction of drilling is transmitted to a device cutting of grooves through a fluid medium.

The advantage of the invention is that in a normal drilling there is axial clearance in the direction of drilling between opposing mechanical surfaces of the tool and the body of the unit cutting grooves, the energy of the stress waves generated by the percussion device is not transmitted to the housing and guiding device of the cutting grooves. Due to this wave voltage does not damage the design of the device cutting of grooves, and the service life of the cutting grooves can be increased.

The idea of a variant implementation is that the device cutting grooves is removable auxiliary device is connected to the sub drilling machine or drill rod, which is connected with the sub. If this is the device for cutting grooves can be easily and connect with a standard drill machine and disconnect from it, when it is necessary. When the device is cutting grooves disconnected, drill machine can be used in standard drilling single holes.

The idea of a variant implementation is that the fluid serves to remove drill cuttings drilling the borehole. Preferably, the fluid passes through the axial volume chamber formed between the box-shaped part of the device cutting grooves and tool, and the wash fluid DAMPS the transmission device of the cutting grooves of the shock wave voltage generated by the percussion device.

The idea of a variant implementation is that the device cutting grooves itself capable of displacement in the case of the sticking device cutting the grooves in the groove.

The idea of a variant implementation is that the device cutting grooves provided with valve means regulating the flow of fluid through the axial volume chamber. Valve means restricts the flow of fluid, thus increasing the pressure of the fluid and providing additional force to move the device cutting grooves in case of sticking.

The idea of a variant of implementation lies in the fact that the guide part includes a pipe exploded with Cabinet part and parallel to it. Additionally, the tube may contain a cutout, in which the cutting crocodolite can rotate. This removes the risk of contact of the drill bit with the pipe.

The idea of a variant of implementation lies in the fact that the guide part includes at least one elongated guide passing longitudinally along the outer surface of the guide part. Data are elongated guides ensure compliance with the desired distance between the drilling of the borehole and the previous hole.

BRIEF DESCRIPTION of DRAWINGS

Below the invention is described in more detail for which examples of embodiments with reference to the accompanying drawings showing the following:

On figa schematically shows a drilling rig.

On fig.1b schematically shows a drilling unit.

On figa-2c schematically illustrates the execution of the groove sequential drilling of closely set of holes.

Figure 3 shows a first isometric view of the first variant of implementation of the device of the cutting grooves according to the present invention.

Figure 4 shows a view in plan of the device of the cutting grooves 3.

Figure 5 shows a view, partially in section, of the device of the cutting grooves 3.

Figure 6 shows a detailed view, partially in section, of the area shown on figure 5, with the cutting device of the slots 3 in the first state.

7 shows a detailed view, partially in section, similar to Fig.6, with the device of the slit is of the grooves 3 in the second state.

On Fig shows a second isometric view of the device of the cutting grooves 3.

Figure 9 schematically shows a second variant implementation of the device of the cutting grooves according to the present invention.

Figure 10 shows a section along line X-X in figure 9.

Figure 11 shows the cross section along the line XI-XI of figure 10.

On Fig schematically shown restraint, through which you can push the device cutting the slots.

In the figures, some embodiments of shown simplified for clarity. In the figures the same parts are indicated with the same number of links.

DETAILED description of the INVENTION

On figa schematically shows a drilling rig 1, which includes the arrow 2, at the end of which is mounted a drill block 60. Drill unit 60, shown in more detail in fig.1b contains beam 3 filing with the drill machine 6, which includes the impact device 4 and, possibly, the rotating device 5. In General, the impact device 4 includes a percussion piston, working under the influence of the environment under pressure and hitting on the upper end of the tool 7 or fittings installed between the tool 7 and the percussion device 4, such as sub 61. In fact, you can create shock pulses in the percussion device 4 in a different way, for example with electrically or without back-post patelnagar move the shock piston. Near the end of the tool 7 is connected with the drill machine 6 through sub 61, and at the far end of the tool 7 is placed a fixed or removable bits 8 to fracture rock. Usually the 8 bit is a drill bit with the teeth 8a, but using bits of other designs are also possible. The rotating device 5 can be transmitted to the tool 7 constant torque, determining a change of the bit position 8, connected to the tool 7, after the dynamic effects of a shock device 4, and then dynamically impact strikes new points in the rock. Drill machine 6 are moving along beam 3 feed direction D of drilling and in the direction R of the reverse, and while drilling device 9 feed presses the tool 7 to rock 62. The feed device 9 can, for example, be a cylinder, working under the influence of pressure in it. When you are drilling deep boreholes, for example, in the so-called drilling capacity drilling rods, drill rods 10a, 10b, 10c (the number of which depends on the depth of hole to be drilling, and which are part of the tool 7) set between 8 bit and drill machine 6. Drill machine 6 may contain the flushing device 11 for supplying flushing fluid through the tool 7 and bit 8 in drilling the ur for flushing the borehole from the drilling cuttings. For clarity, figa not shown flush the channels of the tool 7. Drilling rig 1 may also be equipped with at least one block 63 to control drilling. Additionally, at the far end of the beam 3 of the submission may be holding device 64, through which the tool 7. The retaining device 64 includes a tool mounting tool 7 during drilling. Can also be arranged store 65 drill components storage components such as drill bits 8, cutting grooves and drill rod 10. Shop 65 components can be equipped with a manipulator to move the drill components between the axis of the drilling and shop. By means of the manipulator, when necessary, drilling components, such as devices for the cutting of grooves, can be connected with a drill machine and disconnect from it.

As shown in more detail in fig.1b, the supply pump 12 actuates the feed device 9, the shock pump 13 drives the percussion device 4, and the pump 14 rotation actuates the rotating device 5. The pumps 12, 13, 14 serves the fluid under pressure, preferably hydraulic oil, corresponding to the selected device 9, 4, 5, cited them in action. The pumps 12, 13, 14 are located in the supply pipes 15, 16, 17, respectively, is United with devices 9, 4, 5, and through which fluid under pressure is fed to the device in the directions indicated by arrows A. Alternative required the fluid under pressure supplied from a single pump unit. Fluid is returned from the device 9, 4, 5 on the respective return lines 18, 19, 20 in the directions indicated by arrows B, back into the tank. Drill machine 6 also contains the wash pump 21 located on the feed line 22, which is connected with the flushing device 11. The flushing medium, usually water, is supplied to the rinsing unit 11 in the direction of the arrow A.

The supply pump 12, a shock pump 13, the pump 14 of rotation and the wash pump 21 usually are driven by motors 12a, 13a, 14a, 21a, respectively. For clarity, fig.1b not shown, the control valves used to control devices 4, 5, 9 and 11. The structure and operation of the drilling rig 1 and the drill machine 6 known to experts in the art and, therefore, more detail here will not be considered.

As shown in figa-2c, the groove's perform in the surface of the rock by drilling a set of holes with a pitch that is essentially equal to the diameter of the holes. Because the holes consistently Buryats close to each other, when a new hole Buryats after the previous drilled hole, a wall of rock on the odes between these holes is destroyed. In this way perform a groove along the bore-holes with consistent drilling.

As shown in figa, when the only hole 50 drilled at the surface of the rock, completely circular wall 50a of the hole 50 remains intact. Radial forces F (four of which are shown in figa)acting on the wall 50a on the drill bit, compensate each other, and the sum of the radial forces F can be neglected. However, as shown in fig.2b when a new hole 52 Buryats close to the previous drilled hole 50 to perform groove, the partition wall 51 of rock between the previous drilled a hole 50 drilled a hole 52 is destroyed (shown by dashed line fig.2b). Therefore, destroyed the partition 51 does not generate radial forces F, and the sum of the radial forces F acting on the drill bit, do not compensate each other. Instead, there is a resultant force directed to the previous drilled hole 50, and in drilling new hole 52 drill bit tends to move radially from the required trajectory that is parallel to the first drilled hole 50 and traversing it.

On figs shows the use of the device 100 of the cutting grooves according to the present invention. The hole 50 is initially Buryats standard drill bit. After that, the device 100 of the cutting grooves are installed on arilou machine 6 and sequentially drilling the holes 52 and 54. When drilling the hole 52 perform parallel previous drilled hole 50 and crossing it, and when drilling the hole 54 perform parallel previous drilled hole 52 and crossing it. After drilling, the hole 54 of the tool 7, which includes the bit 8, remove and install so that the guide part 110 of the device 100 of the cutting grooves should be in the previous drilled hole 54. Body part 120 of the device 100 of the cutting grooves, mounted on the tool 7 and connected with the guide part 110, at least one spacer 130 that supports the required trajectory of the new drilled hole.

The guide part 110 may be provided with one or more passing longitudinally elongated guides 112a, 112b. Preferably, guides 112a, 112b are located on the outer surface of the guide part and installed on each side of the ruined walls between the two previous drilled the holes 52, 54. Guides 112a, 112b facilitate placement of the guide part 110 in the previous drilled hole 54, especially given the lack of ruined walls. Alternatively, only the protrusion passing through the outer surface of the guide part 110 outside opposite ends of the ruined walls, and may also promote R is smeshenie the guide part 110 in the previous drilled hole.

Figure 3-8 shows in detail a first preferred implementation of the device 100 of the cutting grooves. Preferably, the guide part 110 to be installed in the previous drilled hole, is a tubular element and passes longitudinally between the tapered front end 114 and a rear end 116, which may also be tapered to facilitate easy removal of the guide part from the previous drilled hole. Can be created neckline 118 to prevent contact between the guide part 110 and the bit 8, when it works in drilling the borehole. As described above, guides 112a, 112b may be located on the outer surface of the guide part 110.

The device 100 of the cutting of the slots contains one or more brackets 130 to connect the guide part 110 with Cabinet part 120. The bracket 130 creates a structural connection for transmitting displacement hull 120 of the guide part 110, that is, the guide part 110 is shifted in the previous drilled hole, in response to the displacement hull 120. Thus, the connection between the guide part 110 of the device 100 cutting grooves and drilling rig 1 is, preferably, only through the bracket 130 and the housing part 120 of the device 100 of the cutting grooves.

Body part 120 of the device 100 of the cutting grooves more information is recorded in the drilled hole and is connected with the tool 7 through a jointly formed by the axial volume chamber 140, containing flushing the fluid for damping the transmission of shock waves voltage from the percussion device 4 to the device 100 of the cutting grooves.

Body part 120 includes a sleeve 122 that forms the channel 124, which passes the tool 7. The channel 124 includes a section 124A beaches first diameter section 124b of the second diameter less than the first diameter section 124A beaches, plot s ledge, passing between the sections 124a, 124b of the first and second diameter and connecting them, and a section 124d of the third diameter is less than the second diameter section 124b. Plot tool 7 passing through the channel 124 includes a section 7a of the piston and section 7b of the piston rod in the vicinity of the drill bit 8. Preferably, the sections 7a, 7b of the piston and rod are mechanically connected between the drill rods 10a, 10b, 10c, if they exist, and 8 bits, but may, alternatively, be made as an integral part of the tool 7. Thus, the shock wave voltage formed by the percussion device 4, is transmitted through a direct mechanical connection, i.e. through the tool 7, which includes sections 7a, 7b of the piston and rod, bit 8.

In section 124A beaches first diameter of the channel 124 posted by slidable section 7a of the piston of the tool 7, and section 124b of the second diameter of the channel is placed plot 7b stem of the tool 7. Thus, the axial volume of the second chamber 140 has the shape of an annular space, formed radially between section 124A beaches first diameter of the channel 124 and section 7b of the shaft of the tool 7, and is formed along the axis between the section 7a of the piston of the tool 7 and the plot s ledge of the channel 124. Preferably, for example, the seal 126 prevents the passage of washing fluid between section 124A beaches first diameter and area 7a of the piston.

The camera 140 may include flushing the fluid which is supplied through the passage 142 of the thread connecting the first inner channel 144 passing through the tool 7 and the second internal channel 146, also passing through the tool 7. The first inner channel 144 is located at a distance from the drill bit 8, and the second internal channel 146 is located near the bit 8. Preferably, the second internal channel 146 delivers the flow of flushing fluid to the drill bit 8. The passage 142 stream includes an axial passage 142a flow, first, in General, the radial passage 142b flow, and second, in General, the radial passage s flow. The axial passage 142a thread is located radially between the section 7b of the shaft of the tool 7 and section 124b of the second diameter of the channel 124. First, in General, the radial passage 142b flow connects the first inner channel 144 of the tool 7 with the first axial end of the axial passage 142a flow, and second, in General, the radial passage s flow connects the second axial end of the axial passage 142a flow from the second the m internal channel 146 of the tool 7. The first and second, in General, radial passages 142b, 142c flow can be inclined or perpendicular to the axial passage 142a flow and the first and second internal channels 144, 146.

On the section 124d of the channel 124 of the third diameter of the clutch 122 is placed slidable section 7b of the shaft of the tool 7. Preferably, for example, through the seal prevented the passage of washing fluid between section 124d of the third diameter and area 7b of the stem.

Figure 6 shows the first mutual arrangement hull 120 of the device 100 cutting grooves and the tool 7. Wash fluid is fed in the axial volume chamber 140 through the first, in General, the radial passage 142b flow. Wash fluid contained in the chamber 140, serves for damping the transmission device 100 of the cutting grooves of the shock wave voltage generated by the percussion device 4 of the drilling rig 1. Specifically, the shock wave voltage generated by the percussion device 4, is transmitted through the tool 7, but the device 100 cutting grooves, in General, isolated from the shock waves of voltage by connecting through flushing the fluid contained in the axial volume chamber 140. Because of the axial volume chamber 140 has a gap G is filled with a fluid medium between the surfaces 70 and 71 of the pressure no longer is t axial mechanical contact between the tool 7 and the clutch 122. Additional flushing fluid continues to pass from the first inner channel 144 through the first, in General, the radial passage 142b flow, axial passage 142a stream and the second, in General, the radial passage s flow in the second internal channel 146, through the bit 8 in the drilled hole.

The device 100 of the cutting grooves is moving, that is, the guide part 110 is shifted in the previous drilled hole, and the body part 120 moves with the tool 7 when the feed device 9 and the passage of the flushing fluid through the tool 7, the filling of the axial volume chamber 140. The flushing fluid in the axial volume chamber 140 acts on the first and second surfaces 70 and 72 of application working pressure, creating a force in the direction D drilling, and, optionally, a third surface 71 of the application of working pressure, creating a force in the direction R of the reverse. Thus, the fluid transmits the force applied from the feed device 9, through section 7a of the piston 7 tool on the clutch 122 hull 120 through the application of operating pressure to the surfaces 70, 72 and the guide part 110 through the bracket 130. But the washing fluid contained in the axial volume chamber 140, dampens the transmission device 100 of the cutting grooves of the shock wave voltage generated by the percussion device 4 drilling condition is anouki 1.

7 shows a second mutual position of Cabinet portion 120 of the device 100 cutting grooves and the tool 7. If the device 100 of the cutting grooves is stuck, for example, the guide part 110 attacks in the previous drilled hole, there is a second relative position. Resistance to advancement of the device 100 cutting grooves in combination with the operation of the feed device 9 causes the restriction of the flow of flushing fluid through the axial passage 142a flow section 124d of the third diameter that is at least partially closing the second, in General, the radial passage s flow. This raises the pressure of the fluid in the axial volume chamber 140, and thus increases the power, bias device 100 of the cutting grooves. In its extreme position to the second relative position the second, in General, the radial passage s flow is completely closed, and the supply of wash fluid is blocked, which can detect block 63 management or the operator of the drilling rig 1, and the tool 7 and the device 100 of the cutting grooves can be extracted from the respective holes.

Preferably, the first, in General, the radial passage 142b flow are filing into the chamber 140 when the first mutual arrangement hull 120 of the device 100, the cutting of grooves and tool 7 drill set is 1. At offset section 7a of the piston of the tool 7 relative to the coupling 122 hull 120, the second mutual arrangement hull 120 and the tool 7 to the first common radial passage 142b stream may flow into an axial passage 142a thread instead of the camera 140, thus, the main flow of flushing fluid bypasses the camera 140, the capacity of which is reduced as well. Reduced the capacity of the camera 140 enables the increase of the pressure fluid to move the device 100 cutting grooves, and when the message limit flushing fluid medium between the camera 140 and the passage 142 of the flow of washing fluid creates less damping, shock wave voltage generated by the percussion device 4 can be transmitted to the device 100 of the cutting grooves to help offset the guide part 110 relative to the previous drilled hole.

Thus, section 124d of the third diameter and the second, in General, the radial passage s flow act as a valve, automatically managing the position of the clutch 122 relative to the tool 7, automatically in response to the flow resistance of the guide part 110. When the guide part is stuck in the previous drilled hole, the flow through the device for cutting grooves is blocked, and the pressure of the fluid increases. Monitor the ring when this can be done by one or more pressure sensors. The measurement results can be transmitted from the sensor unit 63 controls, including the control algorithm. When the specified limit pressure is exceeded, the unit 63 controls can stop drilling and reverse the direction of flow of the drilling machine.

Figure 9-11 shows a second preferred implementation of the device 100 of the cutting grooves. The same reference numbers are used to indicate substantially identical characteristics in both preferred embodiments, implementation, and additional explanation should not be given.

Taking into account that the axial volume chamber 140 of the first preferred variant implementation has the shape of an annular space with the tool 7 forming section 7a of the piston, the axial volume chamber 140A according to the second preferred variant implementation is, in General, a cylindrical shape with a coupling section 122 and the damping piston 128, located in the passage 142 flow through the tool 7. The passage 142 stream includes at least one axial passage 142a flow (four shown in figure 10), first, in General, the radial passage 142b stream and the second, in General, the radial passage s flow. First, in General, the radial passage 142b flow connects the first section of the passage 142 of the flow from the first axial end of the axial passage 142a flow, and second overall, radial passage s flow connects the second axial end of the axial passage 142a stream with the second section of the passage 142 of the flow through the tool 7.

The piston 128 includes an inner section 128a, the outer section 128b and at least one connecting section 128c. The outer section 128b may include two halves, the inner surface of which include projections for the formation of the connecting parts 128c, and half are located one opposite the other and connected with the inner section 128a, for example the screw locks. Each connecting section 128c forms a longitudinal wall, passing between the inner and outer sections 128a, 128b of the piston 128, and fixes them. The inner section 128a forms the first surface 80 of application operating pressure operating direction D drilling, and the second surface 81 of application operating pressure operating direction R of the reverse, when the fluid under pressure is directed to pass through the device 100 of the cutting grooves. At the first relative position the same pressure acts on the surface 80, 81 application of working pressure, have the same surface area, the force acting on the piston 128, are in equilibrium, and the piston is installed in the middle position. The outer section 128b accommodates a slidable tool is UNT 7 and adjacent bonded with section 122 of the coupling at the first relative position between the device 100 cutting grooves and the tool 7. There is an axial gap G in the direction D of drilling and in the direction R of the reverse between the tool 7 and the damping piston 128 to prevent axial mechanical contact between them.

When the resistance to the flow guide part 110 is increased, the damping piston 128 is moved in the direction R of the reverse relative to the tool 7, as shown in figure 11. During the second interaction between the device 100 cutting grooves and the tool 7, the flow of wash fluid through the axial passage 142a flow is choked piston 128 at least partially closing the first, in General, the radial passage 142b flow. As a result, the pressure of the fluid acting on the first surface 80 of the application of the operating pressure increases, and the pressure of the fluid acting on the second surface 81 of application working pressure decreases when higher power is created in the direction D drilling. The piston 128 is also throttles the flow of fluid moving piston 128 in the direction D of the drill relative to the tool 7. This situation may occur when drilling down. Thus, the damping piston 128 automatically adjusts the power supply transmitted to the guide part 110.

During normal drilling groove damping piston 128 has no mechanical axis to the of ntact with the tool 7. The forces acting on the surface 80, 81 application of the operating pressure of the piston 128, ensure the absence of axial mechanical impact surfaces between the tool 7 and the piston 128 to each other. The power supply is transmitted to the piston 128 through the fluid in the axial volume chamber 140. In this case, transmission of the pulse voltage to a device cutting of grooves campfires.

It is worth mentioning that you can also move any other fluid instead of flushing fluid into one or more axial volumetric device cutting grooves. Fluid may, for example, be of the working fluid of the hydraulic system, which is directed from the supply pump 12, a shock pump 13 and the pump 14 of rotation. In this embodiment, the tool 7 is necessary to provide a special channel of the fluid and the axial volume chamber, separated from the wash system.

On Fig shows the retaining device 64 having an aperture 66 through which you can push the device 100 of the cutting grooves. The size and shape of the openings 66 is designed according to the cross-section of the device 100 of the cutting grooves, thus it consists of two intersecting holes. The hole 66 can be equipped with a flexible sealing material 67, such as rubber, with several sections 68 to facilitate passage.

Specialists in this region the STI technique is clear, with the advancement of technology the idea of the invention can be implemented in various ways. The invention and its variants implementation is not limited to the examples described above but may vary within the scope of the claims.

1. Drill unit for drilling slots containing the beam (3) filing, drilling machine (6)located on the beam (3) filing and containing a percussion device (4) and the flushing device (11), the tool (7)connected to the drilling machine (6), while the percussion device (4) configured to generate the shock waves of the voltage directed to the tool (7), and the flushing device (11) is arranged to supply flushing fluid through the tool (7) to remove drill cuttings from the drilling hole (52), the device (9) filing made with the possibility of moving the drilling machine (6) on the beam (3) feed and feed of the tool (7) in drilled hole (52), and, optionally, the device (100) cutting grooves, coupled with drill machine (6) and containing the guide part (110), the housing part (120) and at least one bracket (130), passing between the guide part (110) and Cabinet part (120) and connecting them, while the guide part (110) is placed in the previous drilled hole (50)and the tool (7) is able to slide in hull (120), characterized in that between building the red part (120) of the device (100) cutting grooves and the tool (7) is located, at least one axial volume chamber (140)containing the fluid for damping the transmission of shock waves voltage from the percussion device (4) to the device (100) of the cutting grooves.

2. Drill unit according to claim 1, characterized in that the axial volume chamber (140) is connected with a flushing device (11) via at least one flow channel and includes flushing the fluid.

3. Drill unit according to claim 1 or 2, characterized in that the device (100) cutting grooves is removable auxiliary device is connected to the sub (61) drilling machine (6) or with drill rod (10)connected to the sub (61).

4. Drill unit according to claim 1 or 2, characterized in that the body part (120) of the device (100) cutting grooves and the tool (7) together form at least one axial volume chamber (140)containing the fluid.

5. Drill unit according to claim 1 or 2, characterized in that the body part (120) of the device (100) cutting grooves and the tool (7) together form at least the axial volume chamber (140)containing the fluid, body part (120) of the device (100) cutting grooves contains the clutch (122)comprising a channel (124)through which the tool (7), and that has a plot (124A beaches) of the first diameter section (124b) of a second diameter less than the first diameter plot (14a), and section (124) of the ledge, passing between plot (124A beaches) first diameter and area (124b) of the second diameter and joins them on the site (124A beaches) first diameter of the channel (124) posted by slidable section (7a) of the piston of the tool (7), and plot (124b) of the second diameter of the channel (124) has a section (7b) of the stem of the tool (7), and the axial volume chamber (140) includes an annular space formed radially between the plot (124A beaches) first diameter of the channel (124) and section (7b) of the stem of the tool (7) and formed along the axis between the section (7a) of the piston of the tool (7) and section (124) of the ledge channel (124), a device cutting of grooves further comprises a passage (142) flow for supplying flushing fluid along the tool (7)containing an axial passage (142a) of the thread located radially between the section (7b) of the stem of the tool (7) and plot (124b) of the second diameter of the channel (124), first, in General, the radial passage (142b) of the thread connecting the first internal channel (144) of the tool (7) with the first axial end of the axial passage (142a) of the stream, and the second, in General, the radial passage (142) of the thread connecting the second internal channel (146) of the tool (7) with the second axial end of the axial passage (142a) of the stream channel (124) of the clutch (122) contains a plot (124d) third diameter less than the second diameter section (124b), plot (124d) the third diameter is placed with who is a very useful slide section (7b) of the stem tool (7), and axial displacement of the tool (7) relative to the hull (120) restricts the flow of fluid through the second, in General, the radial passage (142) flow and increases the pressure of the fluid moves the housing part (120) relative to the tool (7).

6. Drill unit according to claim 1 or 2, characterized in that between the tool (7) and Cabinet part (120) posted by damping piston (128), axis connected to the carcass part (120) and separated in the axial direction of the fluid medium to the tool (7).

7. Drill unit according to claim 1 or 2, characterized in that between the tool (7) and Cabinet part (120) posted by damping piston (128)having an axial connection with Cabinet part (120) and separated in the axial direction of the tool (7) through a fluid medium, body part (120) of the device (100) cutting grooves contains the clutch (122)comprising a channel (124) for the passage of the tool (7), the tool (7) contains a passage (142) flow through him, the damping piston (128) contains an internal site (a), located in the passage (142) flow, external area (128b), located around the tool (7), and at least one connecting section (128)connecting the internal and external areas, and the piston (128) is made slidable relative to the tool (7), inner segment (a) which contains the first surface (80) of the application of working pressure in the direction (D) drilling and a second surface (81) of the application of working pressure in the direction R) reverse, the first axial volume chamber (140A) is located on the side of the piston (128) with the first surface (80) of the application of working pressure and contains the fluid, the transmission feed force from the tool (7) through the piston (128) on the clutch (122)and a second axial volume chamber (140b) is located on the side of the piston (128) with the second surface (81) of the application of working pressure and contains the fluid, preventing axial mechanical contact between the tool (7) and the piston (128) in the direction (D) drilling.

8. Drill unit according to claim 1 or 2, characterized in that between the tool (7) and Cabinet part (120) posted by damping piston (128)having an axial connection with Cabinet part (120) and separated in the axial direction of the tool (7) through a fluid medium, body part (120) includes a sleeve (122)comprising a channel (124)for the passage of the tool (7), the tool (7) contains a passage (142) flow through him, the damping piston (128) contains an internal plot (a), located in the passage (142) flow, external area (128b), located around the tool (7), and at least one connecting section (128), connecting the outer and inner sections, and a damping piston (128) is made slidable relative to the tool (7), inner segment (a) contains the first surface (80) app is the supply of operating pressure in the direction (D) drilling and a second surface (81) of the application of working pressure in the direction (R) reverse, the first axial volume chamber (140A) is on the side of the first surface (80) of application operating pressure piston (128) and contains the fluid, the transmission feed force from the tool (7) through the piston (128) on the clutch (122), the second axial volume chamber (140b) is on the side of the second surface (81) of application operating pressure piston (128) and contains the fluid, preventing axial mechanical contact between the tool (7) and the piston (128) in the direction (D) drilling a passage (142) flow tool (7) contains at least one axial passage (142) of the thread connecting the axial volume chamber (140A, 140b), while the axial displacement of the piston (128) relative to the tool (7) in the direction (R) reverse is designed to limit the pressure of the fluid acting on the first surface (80) of the application of working pressure, thus increasing the feed force transmitted through the piston (128) on the clutch (122).

9. Drill unit according to claim 1 or 2, characterized in that the guide part (110) includes at least one elongated guide (112), longitudinally along the outer surface of the guide part (110).

10. Drill unit according to claim 1 or 2, characterized in that the beam feeder holding device (64)located on the far end of the beam (3) filing and containing a hole (66) with razmara is, the corresponding profile of the device (100) cutting grooves, providing a pushing device (100) cutting slots through the retaining device (64).

11. Device for cutting grooves containing an elongated tool (7)having a first end and a second end, the first end provided with a first connecting means (90) for fastening the device (100) of the cutting grooves to the sub (61) drilling machine (6) or to the drill rod (10)connected to the sub (61), and a second end provided with a drill bit (8), the housing part (120), in which the tool (7) is placed, the guide part (110)posted in the previous drilled hole (50)and at least one bracket (130), passing between the guide part (110) and Cabinet part (120) and connecting them, characterized in that the device (100) cutting grooves provided in at least one axial volume chamber (140)located between the box-shaped part (120) and the tool (7), and contains at least one flow channel for directing fluid into the chamber (140), the fluid medium in the chamber (140) transmits axial forces from the tool (7) of the housing part (120).

12. The device according to claim 11, characterized in that it contains at least one inlet channel for feeding the washing fluid from the drilling machine in the axial bulk to the measure (140) and at least one outlet for the release of the flushing fluid from the axial volume chamber (140) in drilling the borehole, the fluid medium passes through the chamber (140).

13. The device according to claim 11 or 12, characterized in that it contains means for monitoring the axial forces opposing the displacement of the guide part (110) in the previous drilled hole (50), and a means of increasing the pressure of the fluid acting in the direction (D) drilling at least one surface (70, 80) application working pressure, at least one axial volume chamber (140, 140A), in response to monitoring data of opposing forces, while the axial force transmitted to the guide part (110)increases.

14. The device according to item 12, characterized in that it contains valve means acting on the volume flow through the axial volume chamber in response to the axial position of the tool (7) relative to the hull (120).

15. The device according to item 13, characterized in that it contains valve means acting on the volume flow through the axial volume chamber in response to the axial position of the tool (7) relative to the hull (120).

16. The method of drilling slots containing the following stages:
drilling of many closely spaced holes (50-54) for the formation of the groove (S) in rock (62)
use drilling boring machine (6)containing a percussion device (4) to generate a shock pulse to the tool (7), which is connected with the drill machine (6);
connection with a drilling machine (6) of the device (100) cutting grooves containing housing part (120)in which the tool (7), the guide part (110) and at least one bracket (130), passing between the guide part (110) and Cabinet part (120) and connecting them;
the placement of the guide part (110) in the previous drilled hole (50) to hold on the trajectory of the previous drilled hole (50) for the new drilled hole (52);
transmission during drilling efforts feed direction (D) of the drilling tool (7) of the housing part (120) of the device (100) cutting grooves and advanced on the guide part (110)containing the transmission feed housing part (120) of the device cutting of grooves in the direction (D) drilling through a fluid medium in at least one axial volume chamber (140, 140A) between the tool (7) and Cabinet part (120) and damping the transmission of shock waves voltage from the percussion device (4) on the device (100) cutting slots through the fluid in at least one axial volume chamber (140, 140A).

17. The method according to item 16, containing a pressure change of the fluid in the axial volume chamber(140, 140A)in response to axial movement between the box-shaped part (120) and the tool (7), made with a possibility of longitudinal sliding one relative to another.

18. The method according to 17, containing the creation of the fluid flow through the axial volume chamber (140, 140A) and the restriction of the fluid flow through the chamber (140, 140A) with slow movement of the guide part (110) in the previous drilled hole (50), while the feed force transmitted to the guide part (110)increases.

19. The method according to p that contains the creation of the fluid flow through the axial volume chamber (140, 140A), the closing of the issuance of the fluid flow through the chamber (140, 140A) when you stop moving the guide part (110) in the previous drilled hole (50), the pressure of the fluid in the chamber of the axial displacement increases, monitoring the pressure of fluid acting in the axial volume chamber, and a reversal of the feed drilling machine (6) when the pressure exceeds the fluid in the axial volume chamber a predetermined limit pressure.

20. The method according to any of the previous PP-19 containing compound, at least one drill rod (10) with sub (61) drilling machine (6) and the connection device (100) cutting grooves with the far end of the farthest drill rod (10).

21. The method according to any of the previous PP, contains the connection device (100) cutting grooves with sub (61) drilling machine (6).

22. The method according to any of the previous PP-19 containing bearing guide part (110) on the surface of the previous drilled hole (50) by means of at least one elongated guide (112), longitudinally along the outer surface of the guide part (110).

23. The method according to any of the previous PP-19, containing the movement of the washing fluid in the axial volume chamber (140, 140A).



 

Same patents:

Coal cutter-loader // 2357080

FIELD: mining.

SUBSTANCE: invention refers to mining industry and is designed for mechanized development of coal beds. The coal cutter-loader consists of feed mechanism, of a tool for intake of core with cutting elements secured on the end of the tool and projected to both sides from the wall of the tool, of a tool rotation mechanism with a drive asembled to travel lengthwise in a vertical plane and connected to the feed mechanism, and of a transporter. The coal cutter-loader is equipped with a base, an undercarriage with a drive, and mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face, this rotation mechanism is connected to the tool, to a case for accumulating coal core, and to an offtake telescopic chute for supplying core to the transporter. Also the feed mechanism is made in form of a carriage connected to a drive by means of a lead screw; the carriage is mounted on a bed plate, which rests on a base. Mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face are made in form of lead screws with drives, to which correspondingly the rotation mechanism and the feed mechanism carriage are connected. The rotation mechanism is installed to travel along guides assembled on the carriage by means of the mechanism of lengthwise travel relative to face; the mechanism of lengthwise travel is installed in its turn on the carriage. The case for core accumulating connected to the tool has a rectangular opening and is equipped with a driven swivel gate. Notably, the movable part of the offtake telescopic chute for supplying core to the transporter is attached to the said case opposite the said opening; the fixed part of the chute is secured on the carriage by means of a bracket.

EFFECT: increased efficiency of coal cutter-loaders and improvement of work environment in coal mines.

4 dwg

FIELD: oil-and-gas production.

SUBSTANCE: in assembly of activator, pistons 8 are fitted in channels 10 to make keys 12 with plates 22 screwed thereto sliding along T-shaped slots 16 of case 1 via piston orifices 18. To extend pistons 12 and cutting elements 6 onto inner surfaces 81 of pistons 8, drilling fluid if forced therein. At reached preset pressure, screws 20 are destructed to make aforesaid pistons displacing from inside position to outside position. Downhole tool comprises drill bit, activator and cutting element arranged on one or every piston of activator. Method of borehole enlargement exploits above described borehole tool.

EFFECT: decreased friction feedback with pistons in rotation of enlarging tool and higher reliability.

19 cl, 47 dwg

Well rounder // 2445432

FIELD: mining.

SUBSTANCE: well rounder comprises a jet nozzle, which is inserted into a circular piston, closing a side hole, capable of limited displacement to the bottom and opening of the side hole, besides, the circular piston is equipped with a controller downstream the jet nozzle, and this controller moves fixedly and longitudinally inside the circular piston, besides, a compression spring is installed on top of the controller, which presses the jet nozzle at the bottom, at the same time the additional piston is made in the form of a corrugated membrane installed oppositely to the side channel in the hydraulic chamber, sealed at the ends, filled with oil at the side of the casing and made as capable of moving the pusher down under excessive pressure at the side of the side hole.

EFFECT: expanded area of application due to operation of heavy drilling agents, due to insulation of a stop mechanism against ingress of a drilling agent, and also possibility to control a liquid flow, at which the stop mechanism actuates, and drilling bits move into the working position.

3 dwg

Well rounder // 2445431

FIELD: mining.

SUBSTANCE: device comprises a casing with inclined surfaces and a steam installed in it to form a chamber, a circular piston with a pusher arranged in the chamber, legs made with the possibility of interaction with appropriate inclined surfaces of the casing and the piston pusher and limited radial displacement to outside. The piston pusher is made in the form of a polyhedral prism arranged above the piston, and the leg at the bottom is equipped with a face for the appropriate face of the piston prism, besides, the casing is equipped with upper and lower limiters, arranged as capable of interaction with accordingly upper and lower ends of the legs; for limitation during their radial displacement to outside.

EFFECT: improved reliability and durability, quality of operation.

2 dwg

Well reamer // 2444605

FIELD: mining.

SUBSTANCE: well reamer includes hollow housing with inner projection and radial holes, retractable rolling cutters with shanks, annular piston with side hole, bypass channels, inner jet nozzle, cylinder connected to the housing and forming together with annular piston a hydraulic chamber, device for fixing rolling cutters in non-working position, and retainer. Annular piston is spring-loaded upward from the cylinder. Retainer is equipped on the top with a cowling from wear-resistant material and connected to annular piston with possibility of restricted turn. Lower part of retainer is made in the form of a downward converging pyramid. At that, shanks of rolling cutters are made so that they can be moved along the appropriate taper surfaces of the pyramid. Jet nozzle is made on the inner side from below in the form of a downward diverging cone, and cowling is made in the form of a cone mating with cone of jet nozzle. Cross-section area of the through channel of jet nozzle, surface area of the through channel between taper surfaces of jet nozzle and cowling and surface area of bypass channels are almost equal.

EFFECT: uniform flow velocity of drilling fluid and minimisation of the wear of the mechanism setting the rolling cutters to working position.

2 cl, 4 dwg

FIELD: mining.

SUBSTANCE: underreamer of ground wells includes thrust rim on the housing of pneumatic puncheon and cone-shaped steel shell moving along the surface of housing of pneumatic puncheon till it touches the rim and equipped with flexible connection in the form of rope with its output to the day surface. At that, the shell is made in the form of solid ring along the side surface of which an annular recess is made. Several turns of spring wire are arranged in annular recess. At that, the dimension of recess from its upper part to lower part along the contact points with the well walls shall be maximum 50 mm and minimum 10 mm. At one point of the above recess there is a slot with closed ellipse-shaped clamp arranged in it and enclosing spring wire turns. Rope for removing the underreamer from the well is attached to the clamp. Additional slots interconnecting the inner space of recess with inner space of the well are made along the perimetre of upper horizontal surface of the ring.

EFFECT: higher operating reliability of the device, simpler design and larger area of application.

2 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: extension-type reamer bit includes centraliser, housing with central through channel and slots, blades equipped with rock-destructing elements and projections in the form of teeth, which are fixed in slots of housing with possibility of being extended, and extension mechanism of blades to working position, which includes hollow shaft with piston, and pusher. Hollow shaft is installed so that it is fixed against being rotated relative to housing. Reamer bit has blade locking device in non-working position, which includes radially spring-loaded annular segments interacting with pusher and located in shaft groove, and groove mating those segments and made in inner wall of housing. Dies of centraliser are extension-type and installed in additional slots of housing. Shanks of dies are equipped with projection of dovetail type, which interact with mating slots made on inclined surfaces of fixing device fixed on shaft below piston and above sleeve.

EFFECT: reliable and long-life design, extended life of reamer bit equipment, and strictly required diameter of gauged well shaft throughout the length of extended interval.

4 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: calibrating device of extension-type well shaft includes housing with inclined slots and spring-loaded stock arranged in it, piston rigidly connected from below to the stock, which is annular and arranged in the chamber formed with outer stock wall and inner wall of the housing, legs with teeth on working surface, which are fixed in inclined slots of the housing and connected by means of rods to piston. Lower reducer with inner converging channel is connected from below to housing and equipped below annular narrowing with annular extension and restrictor. Bushing with seat for tripping ball is inserted inside annular constriction and fixed with shear member, and tightly cuts out the interaction of inner cavity of the stock with chamber and has the possibility of interaction with restrictor when it is moved downwards. At that, height of bushing is less than height of annular extension of lower reducer to restrictor. Working surface of legs is made in the form of protruding screw blades on which calibrating teeth are arranged in rows and overlap each other, and installed flush with screw surface of the appropriate blades.

EFFECT: improving reliability and service life time of construction, which provides calibrated well shaft strictly of required diametre throughout the length of expanded interval, creates no additional load on drill pipes; and enlarging life time of equipment of expanding tool.

2 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to construction industry, and namely to reaming devices of the wells drilled in the soil, and can be used for reaming blind wells at erection of bored piles. Device for reaming blind wells involves the operating tip made of sector plates hinged on the end of cylindrical housing, which is front as to direction of well reaming. Inside that housing there rigidly fixed is vibrator of circular vibrations and spreading mechanism of sector plates, which is made in the form of the ring installed on outer side of cylindrical housing with possibility of being moved throughout its length, which is connected by means of stiff rods to drive of back-and-forth movement.

EFFECT: reaming of blind wells in soil for drilled piles.

2 cl, 5 dwg

Soil well reamer // 2406814

FIELD: construction.

SUBSTANCE: soil well reamer comprises the following components arranged on pneumodrill body - support rim and ring, on lateral side of which there is a flexible link attached as a cable with its protrusion to day surface, and this link is fixed as hidden, with no contact in areas of well walls fixation and not coming out of the ring contour limits, both during operation of pneumodrill and during reamer withdrawal from well. At the same time the ring is solid and has oval shape, and rope is fixed to lateral side of larger diametre ring.

EFFECT: design simplification; reliability and operational safety enhancement.

2 dwg

FIELD: mining.

SUBSTANCE: proposed device comprises drilling rod with rock crushing elements, burner with fuel and air feed lines fitted at the rod end face, dust-and-gas killing unit with built-in tube for discharging hot vapor-gas flow into ambient air, control board, electric heaters with adsorber accommodated inside air feed line. Adsorber represents two different-diametre cylinders fitted one into another. Note that smaller cylinder inner wall is tightly fitted on outer surface of aforesaid discharge tube and accommodated in spring-loaded cartridge that moves free vertically between larger cylinder inner surface and smaller cylinder outer surface. Larger cylinder inner surface top part accommodated slide valve secured thereto, while outer part has valve orifice. Burner incorporates at least two opposed taper nozzles with their inner surfaces provided with curved grooves. Inner surface of one taper channel has curvature of lead groove is directed clockwise, while that on inner surface of opposed nozzle is directed counter clockwise.

EFFECT: higher efficiency of well enlargement.

5 dwg

Well expander // 2244796

FIELD: mining industry.

SUBSTANCE: device has chisel, body, rock-destroying means placed in side grooves of body with guides, stabilizer, mounted moveably on the body and provided with connection sleeve and rock-destroying means, additional connection sleeve, moveably mounted on body and made with side stopping ports, wherein rock-destroying means are placed.

EFFECT: broader functional capabilities, higher efficiency.

3 cl,1 dwg

FIELD: gas extractive industry.

SUBSTANCE: method includes extraction of resource by mechanical drilling and extraction of slurry and rock pieces through well. Gas extraction is performed by horizontal drilling with washing and back expansion, with concurrent cleaning and separation of fresh extracted mixture and accumulation of gas. Delivery of expander of ultra-large working size to expansion place is performed through well subjected for backward expansion. Pressure, temperature and composition of washing liquid is adjusted in such a way, that free natural gas, freed during mechanical drilling, was dissolved in drilling mud and separated from it only after passing of separator through rotating preventer. Expander in form of rocker with cutters is used, expanding well diameter up to ten meters and more.

EFFECT: higher efficiency.

2 cl, 1 ex

FIELD: mining industry.

SUBSTANCE: device has column of double drilling pipes, pilot chisel, expander with body, mounted on double drilling pipes column with possible axial displacement and combined rotation. It is provided with subs, made in form of additional double drilling pipes with outer profiled surface. Expander body is provided with spring-loaded stop for supporting subs. Expander with body is mounted with possible axial displacement and rotation by profiled connection. Expander body is provided with stabilizer. Expander and stabilizer are made detachable.

EFFECT: higher reliability.

3 cl, 1 dwg

Well drilling rig // 2254433

FIELD: well drilling equipment, particularly for drilling water, oil and gas wells.

SUBSTANCE: drilling rig includes drilling string located above reamer, borer with body and flushing channel. Centralizer is installed at a distance exceeding half-wave length drilling string flexure during drilling process. Centralizer is made as hinged spring-loaded blades with centering diameter corresponding to well diameter in transport position and to expanded borehole part diameter in working position. Reamer has eccentrically located rock cutting blades. Borer body is made as limiting step and is provided with stabilizing members secured to the body from side of rock-cutting blades.

EFFECT: simplified structure, increased efficiency and operational stability.

2 cl, 1 dwg

FIELD: mining industry, particularly methods and devices for deep well drilling from under casing shoe, for instance for oil, gas and water well boring.

SUBSTANCE: method involves drilling well; lowering and cementing casing pipe; lowering reamer and performing boring from under casing shoe. Drilling is performed for depth increasing casing string height along with forming shoe chamber. Lowering and cementing of casing pipe is carried out after shoe chamber filling with sand. Drilling from under casing shoe if performed after reamer lowering into shoe chamber, flushing thereof and adjusting reamer relative well axis. Boring device comprises drilling string, reamer having body with eccentric rock-cutting and centering blades and pilot-chisel. The reamer body is provided with lock and opposite guiding members arranged under the lock. One blade is eccentrically formed from eccentric rock-cutting blade. Eccentric and adjusting blades are movably connected with guiding members through connecting sleeves having means for fastening thereof. Connecting sleeve of adjusting blade in lower position is installed on guiding members. Connection sleeve of eccentric rock-cutting blade is mounted on the lock. Lock is formed with taking into consideration eccentricity of eccentric rock-cutting blade.

EFFECT: increased operational reliability, stability and efficiency.

5 cl, 1 dwg, 1 ex

FIELD: building equipment, particularly adapted for drilling vertical, horizontal and inclined wells along with well side compaction.

SUBSTANCE: drilling assembly includes executive device with hollow body. Hollow body is made as upper and lower truncated cones connected one to another by major cone bases. Hollow drill-rod made as a pipe rigidly connected by one end with base mechanism is arranged inside executive device. Rock cutting mechanism is secured to another drill-rod end. Inlet and outlet orifices connected one to another through pipes are formed in executive device body.

EFFECT: reduced energy inputs for well drilling and well side compaction.

1 dwg

FIELD: mining industry and building, particularly equipment for trenchless pipe laying under roads and other engineering structures.

SUBSTANCE: device comprises rod and hollow bush connected thereto and enclosing ends of longitudinal composite reamer sections. Radial cut is formed in hollow bush. Rod is composed of sections having equal lengths. Each section comprises outer conical thread created from one section end and inner thread corresponding to outer one formed from opposite section end. Each section has annular groove with length equal to hollow bush thickness. Hollow bush cut encloses outer annular groove. Each section of composite reamer is installed on rod section and supported in two points spaced along section length. Each support point is formed as two mating hexahedrons.

EFFECT: increased structure simplicity and reliability.

4 dwg

FIELD: oil production industry, particularly to enlarge drilled holes.

SUBSTANCE: device comprises body made as two sections rigidly connected one to another. Each section has inclined slots and legs with teeth secured inside the slots. The legs cooperate with spring-loaded rod arranged inside each body section through pushers. The pushers are sealed against body surface. Inclined slots with legs are arranged in the sections so that when the slots are aligned leg surfaces span inner casing pipe surface or inner bore surface, which is continuously cut with leg teeth along the full perimeter thereof. The body sections are connected through bush with differently-directed threads and retained from mutual rotation by extensions and cuts engaged one to another and formed on end to be connected.

EFFECT: increased efficiency of vertical, horizontal and inclined bore diameter increase.

2 cl, 4 dwg

FIELD: mining industry and building, particularly to drill horizontal wells for trenchless pipeline laying.

SUBSTANCE: advance bore reaming device used during bore forming under obstacles comprises drilling string connected to casing column through reaming mechanism. The reaming mechanism is provided with two crowns having cutter holders, which rotate in opposite directions through integral planetary reduction gear. The planetary reduction gears multiply output rotational moments applied to both crowns rotating in opposite directions and release drilling string from reactive moment.

EFFECT: increased operational reliability and capability due to increased power applied to rock-cutting tools of the device and due to elimination of reactive moment taken by drilling string.

2 dwg

FIELD: drilling equipment, particularly used for enlarging drilled bores.

SUBSTANCE: drilling tool used to increase diameter of previously drilled bore comprises body, drilling means comprising drilling bits and adapted to widen the bore to obtain well bore having the second diameter exceeding the first one. Guiding member advancing from above body and adapted to be installed in previously drilled bore guides drilling tool along the bore. Stabilizing surfaces having ribs extending along tool axis are coaxially arranged around the drilling tool between above drilling bits. Stabilizing surface is located behind drilling means. Above stabilizing surfaces may abut upon wall of bore having the second diameter, which provides reduction of transversal force applied to drilling means.

EFFECT: increased stability, which reduces side load applied to drilling means of drilling tool and increased efficiency.

11 cl, 7 dwg

Up!