Rock debris collecting device for coal bed gas exploration

Abstract

The utility model discloses a rock debris collecting device for coal bed gas exploration, and particularly relates to the technical field of coal bed gas exploration and development, the rock debris collecting device comprises a shell, the inner surface of the shell is rotatably provided with a rotating shaft, the rotating shaft is obliquely arranged, and the left part of the inner cavity of the shell is provided with a blanking assembly; the ends, away from the rotating shaft, of the multiple connecting rods are jointly and fixedly connected with a spiral pipe. According to the rock debris collecting device for coal bed gas exploration, the motor can drive the spiral pipe to rotate continuously through the rotating shaft, and raw materials are added into the rock debris collecting device through the discharging assembly, so that the spiral blades can convey the raw materials into the spiral pipe, the raw materials can be conveyed along the contour of the spiral pipe, and the conveying efficiency is improved. Wherein the slurry can be cleaned out through the hollow holes in the surface of the spiral pipe until the residual rock debris falls into the storage box, and the cleaned rock debris is continuously dried through the heating equipment, so that the accuracy of rock debris detection and analysis is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coalbed methane exploration and development, and particularly relates to a cuttings collection device for coalbed methane exploration. Background Technique

[0002] Cuttings, also known as sand samples, refer to the rock fragments (generally 2-5 mm) that are brought to the ground with the mud circulation after the drill bit breaks the formation during the drilling process. The cuttings can be used to study the drilled formation; during the drilling process, the bottom-hole rock continuously peels off from the rock matrix in the form of blocks or particles under the action of the drill bit, and at the same time, it is further broken under the repeated action of the drill bit to become smaller particles. These rock particles are called cuttings, and the cuttings are carried to the ground by the drilling fluid circulating in the well; by analyzing the cuttings, the properties of the rock, formation changes, and oil and gas layer conditions can be understood.

[0003] Chinese patent document CN217380462U discloses a coalbed methane well cuttings automatic collection device, which includes a wellbore and a slurry outlet pipe connected to the wellbore; it also includes a vibrating screen driven by a vibrating motor located below the slurry outlet pipe; the vibrating screen is arranged obliquely downward from the side close to the slurry outlet pipe to the other side, and a cuttings collection port is opened at the position close to the other side of the vibrating screen; it also includes a cuttings tank input platform, a cuttings tank output platform, a plurality of cuttings tanks, and an electric turntable; the cuttings tank input platform includes a first support platform, a baffle installed on the first support platform, and a spring connected to the baffle and in a horizontal state. This utility model can effectively solve the problem of cuttings collection during the coalbed methane drilling process; the device is directly connected to the wellhead slurry outlet pipe, which is simple, practical, firm, reliable, economical, and improves the cuttings collection efficiency.

[0004] However, in the actual use process, before the cuttings detection and analysis, the mud needs to be cleaned first and then dried before detection to ensure the accuracy of the analysis, which cannot be achieved by this device. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a cuttings collection device for coalbed methane exploration, which can effectively solve the problems put forward in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A cuttings collection device for coalbed methane exploration, including a housing, the lower end of the housing is fixedly connected with a plurality of support legs, the inner surface of the housing is rotatably installed with a rotating shaft, and the rotating shaft is inclined, the outer surface of the housing is fixedly installed with a motor for rotating the rotating shaft, the left part of the inner cavity of the housing is provided with a feeding component, the outer surface of the rotating shaft is fixedly connected with a plurality of connecting rods, and the ends of the plurality of connecting rods far away from the rotating shaft are jointly fixedly connected with a spiral pipe, and the axis of the spiral pipe coincides with the rotating shaft.

[0008] Preferably, the right side of the bottom wall of the inner cavity of the housing is fixedly connected with a partition plate, a heating device is arranged at the lower part of the right end of the partition plate, a storage box is arranged at the upper part of the right end of the partition plate, and the storage box is slidably connected with the front wall of the inner cavity of the housing.

[0009] Preferably, ventilation openings are arranged at the positions of the housing corresponding to the storage box and the heating device.

[0010] Preferably, the feeding component includes an inclined first straight connecting pipe, the first straight connecting pipe is fixedly installed at the lower left corner of the inner surface of the housing, the first straight connecting pipe is sleeved on the lower part of the outer surface of the rotating shaft, the upper side of the middle part of the outer surface of the first straight connecting pipe is also fixedly connected with a second straight connecting pipe, the second straight connecting pipe is communicated with the first straight connecting pipe, the upper end of the second straight connecting pipe passes through the top wall of the inner cavity of the housing, the upper end of the second straight connecting pipe is fixedly connected with a feeding funnel, and a bearing is arranged at the end of the first straight connecting pipe far away from the motor.

[0011] Preferably, a communicating pipe is jointly arranged between the lower end of the spiral pipe and the bearing, the upper part of the outer surface of the communicating pipe is bent in the same shape as the spiral pipe, the lower part of the outer surface of the communicating pipe is inclined coaxially with the first straight connecting pipe, and the lower part of the outer surface of the rotating shaft sequentially passes through the communicating pipe, the bearing and the first straight connecting pipe.

[0012] Preferably, a spiral blade is fixed on the lower part of the outer surface of the rotating shaft, and the upper side of the outer surface of the spiral blade corresponds to the bent part of the communicating pipe.

[0013] Preferably, a plurality of hollow holes are formed in the outer surface of the spiral pipe, the diameter of the hollow holes is smaller than the diameter of the cuttings, and the upper side of the outer surface of the spiral pipe corresponds to the upper side of the storage box.

[0014] Preferably, when in working state, the left side of the inner cavity of the housing is filled with cleaning liquid, and the liquid level of the cleaning liquid is not higher than the upper end surface of the partition plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The cuttings collection device for coalbed methane exploration, the motor can drive the spiral pipe to rotate continuously through the rotating shaft, add raw materials to this device through the feeding component, so that the spiral blades can transport the raw materials into the spiral pipe. As the spiral pipe rotates continuously, the raw materials will be transported along the bent part of the connecting pipe and the contour of the spiral pipe. The slurry among them will be washed out through the hollow holes on the surface of the spiral pipe until the remaining cuttings fall into the storage box, achieving the effect of washing the cuttings, and continuously drying the washed cuttings through the heating device, improving the accuracy of cuttings detection and analysis. Brief Description of the Drawings

[0017] Figure 1 is the schematic structural diagram of the whole of the present utility model Figure 1 ;

[0018] Figure 2 is the schematic structural diagram of the whole of the present utility model Figure 2 ;

[0019] Figure 3 is the schematic internal structural diagram of the whole of the present utility model;

[0020] Figure 4 of the present utility model Figure 3 is the enlarged view of part A in;

[0021] Figure 5 is the schematic structural diagram of the whole working state of the present utility model;

[0022] Figure 6 of the present utility model Figure 5 is the enlarged view of part B in;

[0023] Figure 7 is the schematic diagram of cuttings in the spiral pipe in the working state of the present utility model.

[0024] In the figure: 1. Outer shell; 2. Support legs; 3. Motor; 4. Storage box; 5. Ventilation opening; 6. Feeding component; 7. Heating device; 8. Spiral pipe; 9. Rotating shaft; 11. Partition board; 61. Second straight connecting pipe; 62. First straight connecting pipe; 63. Spiral blades; 64. Bearing; 65. Feeding funnel; 81. Connecting pipe; 91. Connecting rod. Detailed Description of the Preferred Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] As shown Figures 1-4 in the figure, the utility model provides a technical solution: a cuttings collection device for coalbed methane exploration, which includes a housing 1. A plurality of support legs 2 are fixedly connected to the lower end of the housing 1. A rotating shaft 9 is rotatably installed on the inner surface of the housing 1, and the rotating shaft 9 is inclined. As shown Figure 3 in the figure, in order to achieve the effect of the inclination of the rotating shaft 9, the lower left corner and the upper right corner of the housing 1 are inclined. A motor 3 for rotating the rotating shaft 9 is fixedly installed on the outer surface of the housing 1. A feeding assembly 6 is arranged in the left part of the inner cavity of the housing 1. The user can add the raw material to be cleaned, that is, the mixture of mud and cuttings, into the device through the feeding assembly 6. A plurality of connecting rods 91 are fixedly connected to the outer surface of the rotating shaft 9. One ends of the plurality of connecting rods 91 away from the rotating shaft 9 are commonly fixedly connected to a spiral pipe 8. The axis of the spiral pipe 8 coincides with that of the rotating shaft 9, that is, the spiral pipe 8 is inclined like the rotating shaft 9. Therefore, when the motor 3 works, the spiral pipe 8 can be driven to continuously rotate through the rotating shaft 9.

[0027] Specifically, a partition plate 11 is fixedly connected to the right side of the bottom wall of the inner cavity of the housing 1. The partition plate 11 divides the bottom part of the inner cavity of the housing 1 into left and right two parts for dry-wet separation. A heating device 7 is arranged at the lower part of the right end of the partition plate 11. A storage box 4 is arranged at the upper part of the right end of the partition plate 11. The storage box 4 is slidably connected to the front wall of the inner cavity of the housing 1. A handle is arranged at the front end of the storage box 4. The user can pull out the storage box 4 through the handle to take out the cuttings. The heating device 7 is a prior art and can continuously heat to dry the cuttings in the storage box 4.

[0028] In addition, as shown Figure 2 and Figure 3 in the figure, ventilation openings 5 are arranged at the positions corresponding to the storage box 4 and the heating device 7 on the right end of the housing 1. When the storage box 4 works, the hot and humid air can be discharged through the corresponding ventilation openings 5. When the heating device 7 works, it can dissipate heat through the corresponding ventilation openings 5.

[0029] Furthermore, as shown Figures 3-6 in the figure, the feeding assembly 6 includes an inclined first straight connecting pipe 62. The first straight connecting pipe 62 is fixedly installed at the lower left corner of the inner surface of the housing 1. The first straight connecting pipe 62 is sleeved on the lower part of the outer surface of the rotating shaft 9. The upper side of the middle part of the outer surface of the first straight connecting pipe 62 is also fixedly connected to a second straight connecting pipe 61. The second straight connecting pipe 61 is communicated with the first straight connecting pipe 62. The upper end of the second straight connecting pipe 61 passes through the top wall of the inner cavity of the housing 1. The upper end of the second straight connecting pipe 61 is fixedly connected to a feeding funnel 65. A bearing 64 is arranged at the end of the first straight connecting pipe 62 away from the motor 3. During operation, the raw material can be added to the device through the feeding funnel 65, and the raw material will enter the first straight connecting pipe 62 along the feeding funnel 65 and the second straight connecting pipe 61.

[0030] In addition, a connecting pipe 81 is jointly provided between the lower end of the spiral pipe 8 and the bearing 64. The upper part of the outer surface of the connecting pipe 81 is bent in the same shape as the spiral pipe 8, and the lower part of the outer surface of the connecting pipe 81 is inclined coaxially with the first straight connecting pipe 62. It can be simply understood that the connecting pipe 81 is the part for connecting the spiral pipe 8 and the first straight connecting pipe 62. The lower part of the outer surface of the rotating shaft 9 sequentially passes through the connecting pipe 81, the bearing 64, and the first straight connecting pipe 62.

[0031] Furthermore, a spiral blade 63 is fixed to the lower part of the outer surface of the rotating shaft 9. The upper side of the outer surface of the spiral blade 63 corresponds to the bent part of the connecting pipe 81. The spiral blade 63 will rotate synchronously with the rotating shaft 9. While the spiral blade 63 is continuously rotating, the raw materials entering the first straight connecting pipe 62 from the second straight connecting pipe 61 will be conveyed upward by the spiral blade 63 until they reach the uppermost end of the spiral blade 63 and fall into the bent part of the connecting pipe 81, and then enter the spiral pipe 8.

[0032] In addition, a plurality of hollow holes are formed on the outer surface of the spiral pipe 8. The diameter of the hollow holes is smaller than the diameter of the cuttings. The upper side of the outer surface of the spiral pipe 8 corresponds to the upper side of the storage box 4.

[0033] Furthermore, in the working state, the left cavity of the outer shell 1 is filled with a cleaning liquid, and the liquid level of the cleaning liquid is not higher than the upper end surface of the partition plate 11. Therefore, as Figure 7 shown, when the cuttings are in the spiral pipe 8, with the continuous rotation of the spiral pipe 8, they will be conveyed along the bent part of the connecting pipe 81 and the contour of the spiral pipe 8. For each revolution of the rotating shaft 9, the raw materials in the spiral pipe 8 are advanced forward by one pitch until they fall into the storage box 4. Its principle is the same as that of an Archimedes screw pump. And during the continuous rotation of the spiral pipe 8, the mud in the raw materials will be washed out through the hollow holes on the surface of the spiral pipe 8.

[0034] The working principle of the present utility model is as follows: For the cuttings collection device for coalbed methane exploration, when the motor 3 is working, it can drive the spiral pipe 8 to rotate continuously through the rotating shaft 9. The user can add raw materials to the device through the feeding funnel 65. The raw materials will enter the first straight connecting pipe 62 along the feeding funnel 65 and the second straight connecting pipe 61. While the spiral blade 63 is continuously rotating with the rotating shaft 9, the raw materials will be conveyed upward by the spiral blade 63 until they reach the uppermost end of the spiral blade 63 and fall into the bent part of the connecting pipe 81, and then enter the spiral pipe 8;

[0035] When the cuttings are in the spiral pipe 8, with the continuous rotation of the spiral pipe 8, they will be conveyed along the bent part of the connecting pipe 81 and the contour of the spiral pipe 8 until they fall into the storage box 4. And during the continuous rotation of the spiral pipe 8, the mud in the raw materials will be washed out through the hollow holes on the surface of the spiral pipe 8;

[0036] After the cleaned cuttings fall into the storage box 4, the heating device 7 will continuously heat to dry the cuttings in the storage box 4.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rock debris collection device for coalbed methane exploration, comprising a housing (1), characterized in that: A plurality of supporting legs (2) are fixedly connected to the lower end of the shell (1); a rotating shaft (9) is rotatably mounted on the inner surface of the shell (1), and the rotating shaft (9) is arranged to be inclined; a motor (3) for rotating the rotating shaft (9) is fixedly mounted on the outer surface of the shell (1); a blanking assembly (6) is provided at the left part of the inner cavity of the shell (1); a plurality of connecting rods (91) are fixedly connected to the outer surface of the rotating shaft (9); a spiral tube (8) is commonly fixedly connected at one end of the plurality of connecting rods (91) away from the rotating shaft (9); and the axis of the spiral tube (8) coincides with the rotating shaft (9).

2. A rock debris collection device for coalbed methane exploration according to claim 1, characterized in that: A partition plate (11) is fixedly connected to the right side of the bottom wall of the inner cavity of the shell (1); a heating device (7) is provided at the lower right end of the partition plate (11); a storage box (4) is provided at the upper right end of the partition plate (11); and the storage box (4) is slidably connected to the front wall of the inner cavity of the shell (1).

3. A rock debris collection device for coalbed methane exploration according to claim 2, characterized in that: The right end of the housing (1) is provided with ventilation holes (5) at positions corresponding to the storage box (4) and the heating device (7).

4. A rock debris collection device for coalbed methane exploration according to claim 3, characterized in that: The material discharge assembly (6) comprises an inclined first straight connecting pipe (62), the first straight connecting pipe (62) being fixedly mounted at the lower left corner of the inner surface of the outer shell (1), the first straight connecting pipe (62) being sleeved on the lower part of the outer surface of the rotating shaft (9), a second straight connecting pipe (61) being fixedly connected to the upper middle part of the outer surface of the first straight connecting pipe (62), the second straight connecting pipe (61) being in communication with the first straight connecting pipe (62), the upper end of the second straight connecting pipe (61) passing through the top wall of the inner cavity of the outer shell (1), the upper end of the second straight connecting pipe (61) being fixedly connected to a material discharge funnel (65), and a bearing (64) being provided at one end of the first straight connecting pipe (62) away from the motor (3).

5. A rock cuttings collection device for coalbed methane exploration according to claim 4, characterized in that: A connecting tube (81) is provided between the lower end of the spiral tube (8) and the bearing (64); the upper portion of the outer surface of the connecting tube (81) is in the same curved shape as the spiral tube (8); the lower portion of the outer surface of the connecting tube (81) is in an inclined shape coaxial with the first straight connecting tube (62); and the lower portion of the outer surface of the rotating shaft (9) passes through the connecting tube (81), the bearing (64) and the first straight connecting tube (62) in sequence.

6. A rock debris collection device for coalbed methane exploration according to claim 5, characterized in that: A spiral blade (63) is fixed to the lower portion of the outer surface of the rotating shaft (9), and the upper side of the outer surface of the spiral blade (63) corresponds to the position of the curved portion of the connecting pipe (81).

7. A rock debris collection device for coalbed methane exploration according to claim 6, characterized in that: The outer surface of the spiral tube (8) is provided with a plurality of hollow holes, the diameter of the hollow holes being smaller than the diameter of the rock cuttings, and the upper side of the outer surface of the spiral tube (8) corresponds to the upper side of the storage box (4).

8. A rock debris collection device for coalbed methane exploration according to claim 7, characterized in that: In the working state, the left side of the inner cavity of the shell (1) is filled with cleaning liquid, and the liquid level of the cleaning liquid is not higher than the upper end surface of the partition plate (11).

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