Method and system for management of power consumption at theprocess of drilling by rock and device for drilling by rock for its implementation

IPC classes for russian patent Method and system for management of power consumption at theprocess of drilling by rock and device for drilling by rock for its implementation (RU 2367767):

E21B21/08 - Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure (valve arrangements therefor E21B0021100000)

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Method and system for management of power consumption at theprocess of drilling by rock and device for drilling by rock for its implementation / 2367767
Group of inventions relates to mining industry. Device for drilling contains main power supply for feeding of power for drilling process by rock and includes control system of power consumption during the drilling process by rock, including at least sub processes of impingement attack and/or rotation and washing and containing stages of washing power control at least partially, depending on depth of well, and control at least power of impingement attack and/or power of rotation and power of washing.

FIELD: mining.

SUBSTANCE: group of inventions relates to mining industry. Device for drilling contains main power supply for feeding of power for drilling process by rock and includes control system of power consumption during the drilling process by rock, including at least sub processes of impingement attack and/or rotation and washing and containing stages of washing power control at least partially, depending on depth of well, and control at least power of impingement attack and/or power of rotation and power of washing.

EFFECT: control of total power drain of each process.

21 cl, 2 dwg

The technical FIELD

The present invention relates to a method of controlling power consumption in the process of drilling on the breed, as defined in the preamble of paragraph 1 of the claims.

The invention also relates to a system and device for drilling on the breed, as defined in the preamble of paragraphs 11 and 21 of the claims, respectively.

PRIOR art

Device for drilling on the breed can be used in several fields of technology. For example, apparatus for drilling on the breed can be used in tunnels, underground development, strengthening of rocks, the drilling of the rising generation and for drilling, drilling for grouting and wells for installation of anchor bolts.

Drilling on the breed is often performed by percussion drilling on the breed, in which the drilling tool mounted on one end of the drill rod, reported shock pulses through a piston of the percussion hammer, located on the opposite side of the drill stem and arranged to supply power so that periodically affect the drilling rod. On the remote end of the drilling tool includes drill bits, which penetrate into the rock and break it under the action of the piston of the percussion hammer.

The drilling tool can also b is to be pressed to breed to maintain contact between the tool and breed to transfer the maximum possible impact energy from the piston to the shock of the hammer to the breed. To ensure greater efficiency of the process, the drilling tool may additionally be rotated between the beats, so that at each stroke the drilling crown fell to a new location. Drilled rock is washed from the wells with a suitable environment. This medium is usually air in the case of surface drilling equipment and water in the case of devices operating under the ground. Alternative water vapor with a chemical additive or without it can be used in both types of devices.

Device for drilling on the breed further comprises a primary power source, such as a diesel engine is used to generate energy for consuming the energy of the functionality of this device. These functional means may include a compressor to a pressure of drilling fluid/flow, energy, power rotation, power supply, ensure the feed speed, and hydraulic pumps, cooling fans.

Drilling on the breed can also be performed by devices using only rotation and apply pressure to fracture the rock, or devices using only rotation for rock breaking.

The main power source is designed in such a way that all functionality can be used in the calculation of n is their maximum output power output simultaneously to ensure reliable operation.

However, in existing equipment for drilling on the breed, there is a problem consisting in the fact that it often consumes more power than necessary in the drilling process, which leads to excessive fuel consumption and generation of heat and noise.

Accordingly there is a need for an improved method of drilling the host rock, which solves the above problem.

The INVENTION

The aim of the present invention is to provide a method for managing power consumption in the process of drilling the host rock, which eliminates the above-mentioned problem. This goal is achieved by a method for managing power consumption in the process of drilling on the breed according to the characterizing portion of paragraph 1 of the claims.

Another objective of the present invention is a system to control power consumption in the process of drilling the host rock, which eliminates the above-mentioned problem. This goal is achieved by the system, as defined in the characterizing part of paragraph 11 of the claims.

Another objective of the present invention is to provide a device for drilling rock, which eliminates the above-mentioned problem. This goal is achieved by a device for drilling through rock under paragraph 21 of the claims.

The method of controlling the power consumption in the process of drilling since the de using the device for drilling the rock contains regulation power washing, at least partially, depending on the depth of the well, and control at least the power of impact and/or power speed and power washing so that the total power consumption of each sub-process is controlled so that the output power of the main power source was maintained at a preset level or below this level.

This provides the advantage that only the required amount of power at a certain depth of the well is used for washing, and the remaining power can be used for other functions and/or to save battery power, resulting in, for example, less fuel consumption, less noise and less heat.

Power washing can additionally be regulated, at least partially, depending on the diameter of the hole and/or diameter of the drill rod.

The flow of the flushing medium can be maintained essentially constant during the drilling process, i.e. the capacity of leaching increases with increasing depth of the well. The drilling depth can be continuously measured. This provides the advantage that the flow can be maintained accurately at the level of flow required to control the flushing of the borehole, and thereby power washing can constantly maintain privatise at the lowest possible level throughout the drilling process.

The flow of the flushing medium can be increased at least to a small extent with increasing depth of the well. This provides the advantage that increases the depth of the well stream may increase somewhat for additional compensation depth and/or joints of the drill rod, and/or drilling cuttings, with a tendency towards sticking on the wall of the borehole.

The required power washing can be determined by computer means. The computer means may be connected to a memory in which is stored a table containing one or more lists types of drilling tools, and/or types of drilling rods and preferably calculation options that should be used with the selected combination. Power washing can be determined on the basis of the stored data related to the type of drilling tool and/or drill rod and/or the depth of the well. This provides the advantage that the flow of the flushing medium can be maintained at the desired value, regardless of, for example, on the diameter of the drilling tool and/or diameter of the drill rod.

The invention can be used in conventional devices for drilling on the breed, for example, in devices that use shock or rotation or to whom the combination of both types.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 depicts an implementation option device for drilling on the breed according to the present invention.

Figure 2 - block diagram of a variant of implementation of the system according to the present invention.

A DETAILED DESCRIPTION of the PREFERRED embodiments

Figure 1 represents a sample version of the exercise apparatus for drilling on the breed, corresponding to the present invention. The device 1 for drilling on the breed, in this embodiment, is a drilling rig located on the surface of the earth. Drilling rig 1 is shown in operation during the drilling of wells 2, starting from the level of the surface of the earth at the current time has reached the depth of α with the destination specified depth β, for example 30 meters, and finally drilled well is shown by the dashed lines. (Shows the ratio of the height of the rig/well depth is not provided as specified. Full height γ of the drilling rig may be, for example 10 meters).

Drilling rig 1 is equipped with top of the shock of the hammer 11, mounted through the cradle 13 to a feed mechanism 5. Feeding mechanism 5 is attached to the arrow 15 through the holder 12 of the feeding mechanism. Top percussion hammer 11 provides shock impacts is of a drilling tool 3 with one or more drill bits 4 through the drilling rod 6, supported by the support rod 14. Energy is supplied to the top of the shock hammer 11 through the hydraulic pump 10 driven by the diesel engine 9 through the mounting plate attached to the feed mechanism 5 (hydraulic feeder not shown). Drill cuttings away from the borehole 2 by compressed air which is fed through the tube, preferably in the center of the drill rod 6 and is discharged near the drilling tool 3. Compressed air washes the cuttings up and out of the well bore 2, as shown in figure 1 by the arrows pointing up. Instead of compressed air is often used other washing medium, for example water mixture with a chemical additive or no additive. Compressed air is supplied to the drill rod 6 from the compressor 8 through the pipe 7. The compressor 8, in turn, receives energy from the diesel engine 9.

In modern rigs, the diesel engine 9 should be large enough to simultaneously provide power to a compressor and hydraulic pump at full speed, as well as cooling fans and other facilities. The compressor always operates at its maximum speed or close to it during the drilling process, and because the compressor can consume, for example, 120 HP from full power output of the diesel engine, is equal to,for example, 300 PS, the compressor consumes a large amount of fuel, which leads to the creation of large volumes of exhaust gases, noise and heat, which further causes more noise and fuel consumption, due to the fact that the cooling fans must work with greater intensity.

In accordance with the present invention, however, these disadvantages can be eliminated by bringing the compressor effect on the power level that you want at the moment. For example, at the beginning of the drilling power washing, required for the formation of flow of the flushing medium, sufficient to remove drilling cuttings, is relatively small, and thus from a compressor is not required to produce more power than the rated power. This means that the diesel engine, in turn, can operate with a lower power output, which results in lower consumption of fuel, getting a smaller heat and create less noise. Alternative power savings due to the operation of the compressor at a lower input power, can be used to supply more power to the upper shock hammer, than was possible in the other case, which leads to increased drilling speed in the first and/or the greater part of the well.

Reducing the capacity of the compressor mo is et to be implemented in many different ways depending on the type of compressor. For example, in the case of large compressor power can be reduced either by reducing the number of revolutions per minute, or by reducing the compressor load by overlapping input channel.

The management capacity of the compressor is described below with reference to figure 2, which shows a block diagram of the control system. Shows the rig 21 has a diesel engine 22. Diesel engine 22 is directly or indirectly connected with the compressor 23, a hydraulic pump 29, cooling and fan(s) 24, the other agent(s) 25, the upper shock of the hammer 26 and the controller 27, such as a computer. The controller also connected to the compressor 23 and/or the hydraulic pump and/or cooling(s) fan(s) 24, the other agent(s) 25.

To control the capacity of compressor sensor 28, for example, mounted on the applicator, provides the controller 27 information relative to the current depth of the well, and the controller 27 then passes through the CAN bus control signals to the compressor 23, which includes information about what kind of power/pressure he must develop to create the desired flow of the flushing medium. The controller may further send control signals to the diesel engine and/or cooling(s) fan(s), and/or other(s) means, as necessary, e.g. the measures the required power value. The controller 27 may include a memory 30, or may be connected to the memory, which stores the required values for the settings of the compressor depending on the depth of the well, so that the compressor can be adjusted accordingly. Alternative or in addition there may be other saved settings that should be used in conjunction with borehole depth for calculating the required power of the compressor. These design parameters can depend on the type of drilling tool and/or the type of drill rod. The preferred way calculated parameters are stored for each possible combination of the drilling tool and/or drill rod. In an alternative embodiment, there are lists that are stored in memory, where each list includes the configuration of the compressor depending on the depth for each combination. For example, there may be values stored for each magnification for each cm, DM or m depth. You can also save the values obtained for flow increases with increasing depth of the well to compensate for the effect of the factors mentioned above.

In another exemplary embodiment (not shown) sensor, perceiving the actual flow may be associated with the controller for providing a continuous supply of the controller the m control signals for the compressor based on the values of the stream. The thread may, for example, be calculated as the amount in litres per revolution of the compressor, multiplied by the number of revolutions per minute and the ratio of working time to total time.

The desired flow in an alternative embodiment, can be set by the operator by setting the control panel or by typing the desired values into the controller through an interface such as a display and/or keyboard.

The present invention has, for example, the advantage that, when drilling in narrow wells, the compressor is not required to run at full capacity during drilling, resulting in fuel savings and/or excess capacity top drummer during the entire drilling process.

In the above description of the invention presented in connection with surface drilling rig with hydraulic top percussion hammer. However, the present invention can also be used with other types of devices for drilling with a separate power supply for the rinsing process and drilling. For example, the invention may be used with devices for drilling in rock, using both shock and rotation for the implementation of drilling on the breed. The invention can also be used in drilling the rock, where only the rotation and the applied pressure are used to fracture rocks, or DG is used only rotation, an example of what can be drilling in soft rock, as in coal mines. When to breed destruction applies rotation, the power saved by reducing the cost of washing, can be used to improve the speed and therefore the speed of drilling.

It should be borne in mind that various other sensors can communicate with the controller to provide information useful for controlling operation of the device for drilling on the breed.

1. The method of controlling the power consumption in the process of drilling on the breed using the device for drilling the rock containing the main power source for generating power for the drilling process on the breed, including at least subprocesses impact and/or rotation and washing and containing the stages of regulatory power washing, at least partially, depending on the depth of the well and control at least the power of impact and/or power speed and power washing in such a way that provides for the management of full power consumption of each subprocess.

2. The method according to claim 1, characterized in that the power washing additionally regulate, at least partially, depending on the diameter of the hole and/or diameter of the drill rod.

3. The method according to claim 1 or 2, the best of the decomposing those the total power consumption of each subprocess control so that the power output of the main power source is maintained at a preset level or below this level.

4. The method according to claim 1, characterized in that the flow of the flushing medium support essentially constant during the drilling process.

5. The method according to claim 1, characterized in that the flow of the flushing medium increases with increasing depth of the well.

6. The method according to claim 1, characterized in that the depth of the well is continuously measured.

7. The method according to claim 1, characterized in that the flow of the flushing medium is continuously measured.

8. The method according to claim 1, characterized in that the required power washing is determined by the computer means.

9. The method according to claim 8, characterized in that the computer means is connected with a memory in which is stored a table containing one or more lists at least partially enclosing type drilling tool and/or the type of drill rod and/or the depth of the wells, and power washing is determined on the basis of the stored data.

10. The method according to claim 1, characterized in that the shock is carried out using hydraulic top percussion hammer.

11. Control system power consumption in the process of drilling on the breed using the device for drilling rock, imeushih the main power source for supplying energy to the drilling process on the breed, including at least subprocesses impact and/or rotation and flushing, and the system includes means for regulating the power washing, at least partially, depending on the depth of the well, and means for controlling at least a power impact and/or power speed and power washing in such a way that provides for the management of full power consumption of each subprocess.

12. The system according to claim 11, characterized in that it further comprises means to adjust the power washing, at least partially, depending on the diameter of the hole and/or diameter of the drill rod.

13. The system according to claim 11, characterized in that it is arranged to control power consumption of each subprocess so that the output power of the main power source is maintained at a preset level or below this level.

14. The system according to claim 11, characterized in that it is made with the possibility of maintaining the flow of the flushing medium is essentially constant during the drilling process.

15. The system according to claim 11, characterized in that it is arranged to increase the flow of the flushing medium with increasing depth of the well.

16. The system according to claim 11, characterized in that it is made with possibility of continuous measured the I the depth of the well.

17. The system according to claim 11, characterized in that it is made with the possibility of continuous measurement of flow of the flushing medium.

18. The system according to claim 11, characterized in that it is arranged to determine the required power washing with the help of computer tools.

19. System p, characterized in that the computer means connected to the memory for storing a table containing one or more lists at least partially enclosing type drilling tool and/or the type of drill rod and/or the depth of the wells, and power washing is determined based on the stored values.

20. The system according to claim 11, characterized in that the shock is carried out using a hydraulic top drummer.

21. Device for drilling rock, characterized in that it includes a system according to any one of § § 11-20.
Priority items:

29.12.2003 according to claims 1 to 21.