Energy-saving rock core protection sampling device for prospecting

Abstract

The invention belongs to the technical field of sampling devices, and particularly relates to an energy-saving rock core protection sampling device for prospecting, which comprises a geological exploration drilling machine, a rock core pipe, a pressure adjusting device and a hydraulic energy recovery device, the pressure adjusting device and the hydraulic energy recovery device are both arranged in the circuit protection shell, a hydraulic machine is fixedly installed on one side of the geological exploration drilling machine, and an infrared detection mechanism is fixedly installed on the lower side of the hydraulic machine and used for judging the hardness of a rock stratum drilled by the rock core pipe. According to the energy-saving rock core protection sampling device for prospecting, through the arrangement of corresponding mechanisms, the sampling device can dynamically adjust the coring pressure according to the rock stratum hardness, so that the probability of rock core fragmentation or deformation is reduced, the influence on the rock core integrity is reduced, the probability of rock core falling during drill lifting is also reduced, and the drilling efficiency is improved. And normal coring of a subsequent sampling device is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of sampling devices, and in particular relates to an energy-saving core protection sampling device for prospecting. Background Art

[0002] In geological engineering, drilling and sampling of rock formations is an important way to understand geological structures. A sampling device is required. The hollow drill bit on the sampling device is used to drill into the rock formation. During the drilling process, the core is retained inside the drill bit and is pulled out together with the drill bit. The core can then be taken out. The function of the coring drill bit is to annularly crush the rock at the bottom of the well to form a core column. The purpose of coring is to obtain the original geological data of the formation, such as porosity, oil saturation, water invasion and water content. The technical difficulty of coring is to maintain the balance between the internal pressure of the inner tube and the pressure between the wellbore, to ensure that the sealing fluid in the inner tube is not contaminated when drilling down, and when lifting the drill, the core is not pushed out because the gas pressure between the cores in the inner tube has nowhere to be released.

[0003] At present, when taking core samples, geological exploration drills are mostly used to rotate the core tube for sampling. However, the existing sampling devices cannot dynamically adjust the coring pressure according to the hardness of the rock formation. The core is easily broken or deformed, which not only affects the integrity of the core, but also easily causes the core to fall off when the drill is lifted, which is not convenient for the normal coring of the subsequent sampling device.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide an energy-saving core protection sampling device for prospecting, which can solve the problem that the sampling device cannot dynamically adjust the coring pressure according to the hardness of the rock layer, and the core is easily broken or deformed.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0007] An energy-saving core protection sampling device for prospecting comprises: a geological exploration drill, a core tube, a pressure regulating device and a hydraulic energy recovery device, wherein a circuit protection shell is fixedly installed on the geological exploration drill, and the pressure regulating device and the hydraulic energy recovery device are both arranged in the circuit protection shell; a hydraulic press is fixedly installed on one side of the geological exploration drill, and an infrared detection mechanism is fixedly installed on the lower side of the hydraulic press, the infrared detection mechanism is used to determine the rotation speed of the core tube, the pressure regulating device is used to monitor the hardness of the rock layer contacted by the core tube, and to regulate and control the pressure of the core tube, and the hydraulic energy recovery device is used to regulate the energy in the hydraulic press and reduce the energy consumption during the sampling process.

[0008] In one or more embodiments of the present invention, the pressure regulating device is electrically connected to the infrared detection mechanism, which facilitates the pressure regulating device to control the infrared detection mechanism, so that the pressure regulating device can operate according to the judgment of the infrared detection mechanism on the rotation speed, thereby improving the operating stability of the pressure regulating device;

[0009] The hydraulic energy recovery device is electrically connected to the hydraulic machine, which facilitates the regulation of the hydraulic machine by the hydraulic energy recovery device, enables the hydraulic energy recovery device to control the hydraulic accumulator to recover energy in the hydraulic machine, and enables the hydraulic energy recovery device to control the hydraulic accumulator to release energy back into the hydraulic machine, thereby greatly reducing energy consumption.

[0010] In one or more embodiments of the present invention, the pressure regulating device includes a circuit board 1, which facilitates the installation of the pressure module, the information extraction module, the information processor, the power control module and the warning device, improves the stability of each module, and enables each module to cooperate;

[0011] The circuit board is provided with a pressure module, an information extraction module, an information processor, a power control module and a warning device. The modules can cooperate with each other on the circuit board to process information such as the rotation speed and pressure of the core tube, thereby improving the operation stability of the core tube.

[0012] The pressure module is used to determine whether the pressure in the core tube is balanced with the pressure between the wellbore, and transmit it to the information processor. It can determine whether the pressure in the core tube is balanced with the pressure between the wellbore, and the stability of the core can be determined by whether the pressure is balanced.

[0013] In one or more embodiments of the present invention, the information extraction module is used to extract information within the infrared detection mechanism and transmit it to the information processor. The information processor is used to compare the information within the pressure module and the infrared detection mechanism. If the judgment is successful, the information is transmitted to the power control module. If the judgment fails, the information is transmitted to the warning device.

[0014] In one or more embodiments of the present invention, the power control module is used to control the rotation speed of the core tube according to the signal sent by the information processor. By controlling the rotation speed and pressure of the core tube, the core tube can better drill the rock formation, reduce the probability of core breakage or deformation, and improve the integrity of the core.

[0015] In one or more embodiments of the present invention, the warning device includes a buzzer alarm and an information receiving module. The buzzer alarm is used to warn the user, and the information receiving module is used to receive signals from the information processor to facilitate the user's inspection. After the warning, the user can inspect the pressure module and the infrared detection mechanism.

[0016] In one or more embodiments of the present invention, a hydraulic accumulator is fixedly installed on the lower side of the hydraulic press. The hydraulic accumulator is used to recover the energy in the hydraulic press and is regulated by the hydraulic energy recovery device. When the load in the hydraulic press slows down or stops during movement, the energy in the hydraulic press is not completely consumed, but exists in the hydraulic press in the form of pressure. Through the hydraulic regeneration circuit, this energy can be converted into pressure energy and input into the hydraulic system again to achieve energy regeneration. The hydraulic regeneration circuit stores the hydraulic energy through the hydraulic accumulator.

[0017] In one or more embodiments of the present invention, the hydraulic energy recovery device includes a second circuit board, and a signal receiving module and an energy control module are provided on the second circuit board.

[0018] In one or more embodiments of the present invention, the signal receiving module is used to receive the operation information of the hydraulic press, and the energy control module can control the recovery and release of energy in the hydraulic press by the hydraulic accumulator according to the operation information of the hydraulic press.

[0019] Compared with the prior art, the energy-saving core protection sampling device for prospecting of the present invention enables the sampling device to dynamically adjust the coring pressure according to the hardness of the rock formation through the setting of corresponding mechanisms, thereby reducing the probability of core breakage or deformation, which reduces the impact on the integrity of the core and reduces the probability of the core falling off when lifting the drill, thereby facilitating normal coring of the subsequent sampling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a front cross-sectional view of an energy-saving core protection sampling device for prospecting in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0023] Figure 3 A three-dimensional diagram of an energy-saving core protection sampling device for prospecting in one embodiment of the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure at B in the middle;

[0025] Figure 5is a functional diagram of a pressure regulating device in one embodiment of the present invention;

[0026] Figure 6 4 is a functional diagram of a hydraulic energy recovery device in one embodiment of the present invention.

[0027] Description of main reference numerals:

[0028] 1-geological exploration drilling rig, 2-core tube, 3-pressure regulating device, 4-hydraulic energy recovery device, 5-circuit protection shell, 6-hydraulic press, 7-infrared detection mechanism, 8-hydraulic accumulator. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] like Figures 1 to 6 As shown, an energy-saving core protection sampling device for prospecting in an embodiment of the present invention comprises: a geological exploration drill 1, a core tube 2, a pressure regulating device 3 and a hydraulic energy recovery device 4. A circuit protection shell 5 is fixedly installed on the geological exploration drill 1, and the pressure regulating device 3 and the hydraulic energy recovery device 4 are both arranged in the circuit protection shell 5. A hydraulic press 6 is fixedly installed on one side of the geological exploration drill 1, and an infrared detection mechanism 7 is fixedly installed on the lower side of the hydraulic press 6. The infrared detection mechanism 7 is used to determine the rotation speed of the core tube 2. The pressure regulating device 3 is used to monitor the hardness of the rock formation contacted by the core tube 2. By adjusting the rotation speed, the pressure regulation control of the core tube 2 is realized. The hydraulic energy recovery device 4 is used to regulate the energy in the hydraulic press 6 and reduce the energy consumption during the sampling process.

[0031] Among them, the principle of infrared detection of rotation speed is mainly based on the Doppler effect. When the light beam emitted by the infrared light source shines on the rotating object, the frequency of the reflected light will change, and this change in frequency is related to the rotation speed of the object. By measuring the change in the frequency of the reflected light, the rotation speed of the object can be calculated. Specifically, the infrared detection mechanism includes an infrared light source, an infrared sensor, and a computer. The infrared light source emits a beam of infrared light, and the infrared sensor receives the reflected infrared light. When the target approaches or moves away from the infrared sensor, the frequency of the reflected infrared light will change, and this change is proportional to the target's movement speed. By measuring this frequency change, the target's rotation speed can be calculated.

[0032] like Figures 1 to 6As shown, the pressure regulating device 3 is electrically connected to the infrared detection mechanism 7, which facilitates the pressure regulating device 3 to control the infrared detection mechanism 7, so that the pressure regulating device 3 can operate according to the judgment of the infrared detection mechanism 7 on the rotation speed, thereby improving the operating stability of the pressure regulating device 3.

[0033] Among them, the hydraulic energy recovery device 4 is electrically connected to the hydraulic press 6, which facilitates the regulation of the hydraulic energy recovery device 4 on the hydraulic press 6, so that the hydraulic energy recovery device 4 can control the hydraulic accumulator 8 to recover the energy in the hydraulic press 6, and the hydraulic energy recovery device 4 can control the hydraulic accumulator 8 to release energy back to the hydraulic press 6, thereby greatly reducing energy consumption.

[0034] like Figures 1 to 5 As shown, the pressure regulating device 3 includes a circuit board 1, which facilitates the installation of the pressure module, the information extraction module, the information processor, the power control module and the warning device, improves the stability of each module, and enables each module to cooperate.

[0035] Among them, a pressure module, an information extraction module, an information processor, a power control module and a warning device are provided on the circuit board 1. Each module can cooperate with each other on the circuit board 1 to process information such as the rotation speed and pressure of the core tube 2, thereby improving the operating stability of the core tube 2.

[0036] In addition, the pressure module is used to determine whether the pressure in the core tube 2 is balanced with the pressure between the wellbore, and transmit it to the information processor. It can determine whether the pressure in the core tube 2 is balanced with the pressure between the wellbore, and the stability of the core can be determined by whether it is balanced.

[0037] like Figures 1 to 6 As shown, the information extraction module is used to extract information from the infrared detection mechanism 7 and transmit it to the information processor. The information processor is used to compare the information in the pressure module and the infrared detection mechanism 7. After successful judgment, the information is transmitted to the power control module. If the judgment fails, the information is transmitted to the warning device.

[0038] like Figures 1 to 5 As shown, the power control module is used to control the rotation speed of the core tube 2 according to the signal sent by the information processor. By controlling the rotation speed and pressure of the core tube 2, the core tube 2 can better drill the rock formation, reduce the probability of core breakage or deformation, and improve the integrity of the core.

[0039] like Figures 1 to 6 As shown, the warning device includes a buzzer alarm and an information receiving module. The buzzer alarm is used to warn the user, and the information receiving module is used to receive signals from the information processor to facilitate the user's inspection. After the warning, the user can detect the pressure module and the infrared detection mechanism 7.

[0040] like Figures 1 to 6 As shown, a hydraulic accumulator 8 is fixedly installed on the lower side of the hydraulic press 6. The hydraulic accumulator 8 is used to recover the energy in the hydraulic press 6 and is regulated by the hydraulic energy recovery device 4. When the load in the hydraulic press 6 slows down or stops during movement, the energy in the hydraulic press 6 is not completely consumed, but exists in the hydraulic press 6 in the form of pressure. Through the hydraulic regeneration circuit, this energy can be converted into pressure energy and input into the hydraulic system again to achieve energy regeneration. The hydraulic regeneration circuit stores the hydraulic energy through the hydraulic accumulator 8.

[0041] like Figures 1 to 6 As shown, the hydraulic energy recovery device 4 includes a second circuit board, on which a signal receiving module and an energy control module are provided.

[0042] like Figures 1 to 5 As shown, the signal receiving module is used to receive the operation information of the hydraulic machine 6, and the energy control module can control the hydraulic accumulator 8 to recover and release the energy in the hydraulic machine 6 according to the operation information of the hydraulic machine 6.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Energy-saving core protection sampling device for prospecting, characterized in that: include: A geological exploration drill, a core tube, a pressure regulating device and a hydraulic energy recovery device, wherein the core tube is arranged on one side of the geological exploration drill, the pressure regulating device and the hydraulic energy recovery device are both fixedly installed on the geological exploration drill, a circuit protection shell is fixedly installed on the geological exploration drill, the pressure regulating device and the hydraulic energy recovery device are both arranged inside the circuit protection shell, a hydraulic press is fixedly installed on one side of the geological exploration drill, an infrared detection mechanism is fixedly installed on the lower side of the hydraulic press, the infrared detection mechanism is used to determine the rotation speed of the core tube, and the pressure regulating device is used to monitor the hardness of the rock layer contacted by the core tube and adjust and control the pressure of the core tube.

2. The energy-saving core protection sampling device for prospecting according to claim 1 is characterized in that: The hydraulic energy recovery device is used to regulate the energy in the hydraulic machine and reduce the energy consumption during the sampling process. The pressure regulating device is electrically connected to the infrared detection mechanism, and the hydraulic energy recovery device is electrically connected to the hydraulic machine.

3. The energy-saving core protection sampling device for prospecting according to claim 1 is characterized in that: The pressure regulating device includes a circuit board 1, on which a pressure module, an information extraction module, an information processor, a power regulation module and a warning device are provided. The pressure module, information extraction module, information processor, power regulation module and warning device are all electrically connected to the circuit board 1.

4. The energy-saving core protection sampling device for prospecting according to claim 3 is characterized in that: The pressure module is used to determine whether the pressure in the core tube is balanced with the pressure in the wellbore through the pressure sensor, and transmit the result to the information processor.

5. The energy-saving core protection sampling device for prospecting according to claim 3 is characterized in that: The information extraction module is used to extract information from the infrared detection mechanism and transmit it to the information processor. The information processor is used to compare the information in the pressure module and the infrared detection mechanism. If the judgment is successful, the information is transmitted to the power control module. If the judgment fails, the information is transmitted to the warning device.

6. The energy-saving core protection sampling device for prospecting according to claim 3 is characterized in that: The power control module is used to control the rotation speed of the core tube according to the signal sent by the information processor.

7. The energy-saving core protection sampling device for prospecting according to claim 3 is characterized in that: The warning device comprises a buzzer alarm and an information receiving module. The buzzer alarm is used to warn the user, and the information receiving module is used to receive a signal sent by an information processor.

8. The energy-saving core protection sampling device for prospecting according to claim 1 is characterized in that: A hydraulic accumulator is fixedly installed on the lower side of the hydraulic press. The hydraulic accumulator is used to recover energy in the hydraulic press and is regulated by a hydraulic energy recovery device.

9. The energy-saving core protection sampling device for prospecting according to claim 8 is characterized in that: The hydraulic energy recovery device comprises a second circuit board, on which a signal receiving module and an energy regulating module are arranged.

10. The energy-saving core protection sampling device for prospecting according to claim 9, characterized in that: The signal receiving module is used to receive the operation information of the hydraulic press, and the energy control module can control the recovery and release of energy in the hydraulic press by the hydraulic accumulator according to the operation information of the hydraulic press.

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