Directional hydraulic fracturing equipment for mine

Abstract

The directional hydraulic fracturing equipment comprises a cylinder frame, a plurality of side grooves are formed in the side wall of the middle section of the cylinder frame, a plurality of anchoring assemblies are arranged on the outer wall of the lower portion of the cylinder frame, a sliding cylinder is arranged in the cylinder frame in a sliding mode, an opening is formed in one side of the lower portion of the sliding cylinder, and an inclined plate is arranged in the opening; the device further comprises a rotating rod, a drill bit is arranged below the rotating rod, and the outer wall, above the drill bit, of the rotating rod is sleeved with a spraying rod. Compared with the prior art, the device has the characteristics of high efficiency, accuracy and environmental protection, brings great benefits to mine resource development and industrial upgrading, and is one of indispensable and important devices in modern mining production.

Description

Technical Field

[0001] The invention relates to the technical field of mineral mining, in particular to a mine directional hydraulic fracturing device. Background Art

[0002] As society's demand for energy continues to grow, the exploitation and utilization of mine resources has become increasingly important. As a new type of engineering device, mine directional hydraulic fracturing equipment needs to improve the efficiency and accuracy of horizontal well fracturing operations inside mines. Horizontal well technology improves the efficiency and output of resource extraction by forming horizontal or near-horizontal wellbores underground. Hydraulic fracturing technology is a commonly used mining method that uses high-pressure hydraulic fracturing to fracture underground rocks and release natural gas or oil in the reservoir.

[0003] However, existing hydraulic fracturing technology is limited by the control of operation direction, making it difficult to achieve accurate directional fracturing. It is often impossible to accurately control the fracturing direction and angle, resulting in waste and loss of resources. In addition, traditional horizontal well construction cycles are long and costly, and the operation direction needs to be repeatedly adjusted during hydraulic fracturing operations, which is time-consuming and labor-intensive.

[0004] In addition, existing hydraulic fracturing operations usually require multiple drillings to achieve multi-point fracturing, and each drilling requires time, manpower and material costs, while increasing the complexity and risk of the operation, resulting in low overall operation efficiency. In addition, each drilling will cause a certain degree of disturbance and damage to the formation, which may cause geological disasters or lead to leakage of groundwater and gas, increasing the safety hazards of the operation, and may also cause multi-point fracturing. It is often difficult to ensure that the fracturing effect of each point is uniform, resulting in uneven utilization of underground resources and reducing the comprehensive benefits of resource exploitation.

[0005] Therefore, it is necessary to provide a mine directional hydraulic fracturing equipment to solve the problems raised in the above background technology. Summary of the invention

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A mine directional hydraulic fracturing equipment, comprising a cartridge frame, a middle section side wall of the cartridge frame is provided with a plurality of side grooves, a lower outer wall of the cartridge frame is provided with a plurality of anchoring assemblies, a sliding cylinder is slidably provided in the cartridge frame, one side of the lower part of the sliding cylinder is provided with an opening, and an inclined plate is provided in the opening; It also comprises a rotating rod, a drill bit is arranged below the rotating rod, and a spray rod is sleeved on the outer wall of the rotating rod above the drill bit.

[0007] Further, as a preference, the inner wall of the cylinder frame between the side grooves is provided with internal locking teeth, and the outer wall of the sliding cylinder is provided with external locking teeth.

[0008] Further, as a preference, a plurality of elastically telescopic wedges are distributed on the inner wall of the upper part of the sliding cylinder, and the upper surface of the wedge is an inclined surface while the lower surface is a horizontal surface.

[0009] Further, as a preference, a torque block is fixed on the inner wall of the upper part of the sliding cylinder, and the torque block is a polyhedron with pointed upper and lower ends and a wide middle part.

[0010] Further, as a preference, two rotating blocks are rotatably arranged on the side wall of the sliding cylinder, the center of the rotating block is connected to the sliding cylinder through a torsion spring, and the torsion spring makes the rotating block in a horizontal state in the natural state.

[0011] Further, as a preference, the anchoring assembly includes a first clamping strip and a second clamping strip. A through groove is formed in the first clamping strip, and a plug is slidably connected in the through groove. The plug is fixed in the cylinder frame, and the first clamping strip penetrates into the cylinder frame; The second clamping strip is hinged to the outer end of the first clamping strip, and the other end of the second clamping strip is hinged to a pull rod. The pull rod is slidably embedded in the outer wall of the cylinder frame.

[0012] Further, as a preference, a plurality of springs are embedded in the upper part of the cylinder frame. The top of each pull rod abuts against the spring through a top block, and the top block is slidably penetrated into the cylinder frame.

[0013] Mine directional hydraulic fracturing method, including: S1. Drilling: Before performing the fracturing operation at an appropriate position, geological exploration and analysis are required to determine the optimal drilling position and direction; Use drilling equipment to start drilling at the predetermined position, ensuring that the diameter and depth of the drilling meet the operation requirements. During the drilling process, timely clean the cuttings and mud generated in the drilling hole to keep the drilling hole unobstructed; S2. Inserting the cylinder frame: When the drilling reaches the predetermined depth, stop the drilling operation, prepare to insert the cylinder frame, hang the cylinder frame on the drilling platform near the wellhead, ensure the stability and verticality of the cylinder frame, and install the sliding cylinder at the bottom of the cylinder frame; Slowly and carefully lower the cylinder frame into the drilling hole until the cylinder frame is completely inserted into the formation and reaches the predetermined position, ensuring that all components of the cylinder frame are not damaged during the insertion process and can be effectively anchored in the formation to ensure safety and stability; After inserting the cylinder frame, confirm the position and stability of the cylinder frame through inspection and measurement to ensure its good contact and fixation with the formation. If any position deviation or instability is found, adjust and correct it in time to ensure the safety and stability of the cylinder frame; S3. Bit installation: Ensure that the drill bit is correctly installed and the spray rod is in the predetermined position. Insert the rotating rod into the barrel rack until the drill bit is inserted into the sliding barrel and firmly connected to the sliding barrel; S4. Drill bit position adjustment: Lift the rotating rod to move the drill bit and drive the sliding barrel up to the horizontal well fracturing point at the bottom of the side groove area. Rotate the rotating rod to align the inclined plate with the side groove in the corresponding direction; S5. Horizontal well drilling and fracturing: Press down the rotating rod again. Since the downward movement of the sliding barrel is restricted, at this time, the drill bit protrudes obliquely from the side groove under the action of the inclined plate to directionally drill a horizontal well. After reaching the predetermined length, start the fracturing pump to eject the fracturing fluid from the spray rod to the fracturing formation within this range; S6. Fishbone-shaped horizontal branch fracturing: Repeat S4 and S5, and perform fracturing operations in different directions from bottom to top in sequence to fracture the formation within the entire side groove range into fishbone-shaped horizontal branch fractures; S7: Recovery device: The rotating rod drives the drill bit to be recovered to the ground, and at the same time, the sliding barrel and the barrel rack are also taken out of the ground.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Improve resource extraction efficiency: The mine directional hydraulic fracturing equipment can realize horizontal well shaping fracturing operations inside underground mines. By precisely controlling the fracturing direction and angle, the underground resources can be released to the greatest extent, improving the efficiency and output of resource extraction.

[0015] Reduce production costs: Compared with the traditional mining method, the mine directional hydraulic fracturing equipment adopts a refined operation method, reducing unnecessary resource waste and energy consumption, reducing production costs, and enhancing economic benefits.

[0016] Make the most of underground space: Since this device can perform fracturing operations by extending horizontally underground, it can make full use of the space resources of underground mines, improve the utilization rate of underground space, and provide greater space and possibilities for subsequent mining operations. Description of the drawings

[0017] Figure 1 It is a schematic structural diagram of a mine directional hydraulic fracturing equipment; Figure 2 It is a schematic structural diagram of the sliding barrel; Figure 3 It is a schematic structural diagram of the cross-section of the sliding barrel; Figure 4 It is a schematic structural diagram of the anchoring component when the sliding barrel is below the anchoring component; Figure 5 It is a schematic structural diagram of the part below the anchoring component when the sliding barrel is in the side groove position; Figure 6 Schematic diagram of the structure below the anchoring assembly when the sliding cylinder is at the upper part of the cylinder frame; Figure 7 Schematic diagram of fishbone-shaped horizontal branch fracturing In the figure: 1. Cylinder frame; 2. Side groove; 21. Inner clamping teeth; 3. Rotating rod; 31. Drill bit; 32. Spray rod; 4. Sliding cylinder; 41. Inclined plate; 42. Outer clamping teeth; 43. Wedge block; 44. Rotating block; 45. Torque block; 5. Anchoring assembly; 51. First clamping strip; 52. Second clamping strip; 53. Through groove; 54. Pin; 55. Pull rod; 56. Top block; 57. Spring. Specific implementation manner

[0018] Please refer to Figure 1 , in an embodiment of the present invention, a mine directional hydraulic fracturing device includes a cylinder frame 1. A plurality of side grooves 2 are provided on the side wall in the middle section of the cylinder frame 1. A plurality of anchoring assemblies 5 are provided on the outer wall of the lower part of the cylinder frame 1. A sliding cylinder 4 is slidably arranged in the cylinder frame 1. One side of the lower part of the sliding cylinder 4 has an opening, and the width of the opening is the same as the width of the side groove 2. An inclined plate 41 is arranged inside the opening; It further includes a rotating rod 3. A drill bit 31 is provided below the rotating rod 3. The diameter of the drill bit 31 is slightly smaller than the width of the side groove 2. A spray rod 32 is sleeved on the outer wall of the rotating rod 3 above the drill bit 31.

[0019] When the sliding cylinder 4 slides to a predetermined height in the cylinder frame 1 and the inclined plate 41 is aligned with one of the side grooves 2, the inclined plate 41 can guide the drill bit 31 to be inclined, so that the rotating rod 3 extends horizontally in the direction of the side groove 2, so that the spray rod 32 can perform horizontal well shaping fracturing at a predetermined position.

[0020] In this embodiment, inner clamping teeth 21 are distributed on the inner wall of the cylinder frame 1 between the side grooves 2, and outer clamping teeth 42 are distributed on the outer wall of the sliding cylinder 4. The outer clamping teeth 42 and the inner clamping teeth 21 can slide unidirectionally, so that the sliding cylinder 4 can only slide upward in the cylinder frame 1; Please refer to Figure 2 , in this embodiment, a plurality of elastically telescopic wedge blocks 43 are distributed on the inner wall of the upper part of the sliding cylinder 4. The upper surface of the wedge block 43 is an inclined surface and the lower surface is a horizontal surface. When the drill bit 31 extends into the sliding cylinder 4, the drill bit 31 pushes the wedge block 43 to contract through the inclined surface. When the drill bit 31 slides upward, the wedge block 43 clamps the drill bit 31 so that the drill bit 31 can only rise to the upper part of the sliding cylinder 4. That is to say, by lifting the drill bit 31, the sliding cylinder 4 can be driven to move upward together with the drill bit 31, so that the drill bit 31 can be inclined at different depths to perform horizontal well fracturing.

[0021] In this embodiment, a torque block 45 is fixed to the inner wall of the upper part of the sliding cylinder 4. The torque block 45 is a polyhedron with pointed upper and lower ends and a wide middle part. The torque block 45 can be stuck into the groove on the outer wall of the drill bit 31, so that the torque of the drill bit 31 can be transmitted into the sliding cylinder 4, enabling the sliding cylinder 4 to change its direction by means of the torque of the rotating drill bit 31.

[0022] In this embodiment, two rotating blocks 44 are rotatably arranged on the side wall of the sliding cylinder 4. The distance between the outer sides of the two rotating blocks 44 is the same as the width of the side groove 2. The center of the rotating block 44 is connected to the sliding cylinder 4 by a torsion spring. The torsion spring makes the rotating block 44 in a horizontal state in its natural state. When the two rotating blocks 44 are in the horizontal state, they can be stuck between the side grooves 2, thus restricting the rotation of the sliding cylinder 4. When the drill bit 31 is at the position where the rotating block 44 is located, the rotating block 44 is pushed to the vertical state. At this time, the rotating block 44 cannot block the side groove 2, and the sliding cylinder 4 can rotate in the cylinder frame 1, thereby changing the orientation of the inclined plate 41.

[0023] Please refer to Figures 4 - 6 , in this embodiment, the anchoring assembly 5 includes a first clamping strip 51 and a second clamping strip 52. A through groove 53 is formed in the first clamping strip 51. A plug pin 54 is slidably connected in the through groove 53. The plug pin 54 is fixed in the cylinder frame 1, and the first clamping strip 51 penetrates into the cylinder frame 1; The second clamping strip 52 is hinged to the outer end of the first clamping strip 51, and the other end of the second clamping strip 52 is hinged to the pull rod 55. The pull rod 55 is slidably embedded in the outer wall of the cylinder frame 1.

[0024] When the cylinder frame 1 is pressed into the formation, when the sliding cylinder 4 is below the first clamping strip 51, the first clamping strip 51 contracts in the cylinder frame 1. When the sliding cylinder 4 slides upward to the area where the side groove 2 is located, it pushes the first clamping strip 51, causing the first clamping strip 51 and the second clamping strip 52 to be anchored into the formation to improve the stability of the cylinder frame 1.

[0025] In this embodiment, a plurality of springs 57 are embedded in the upper part of the cylinder frame 1. The top of each pull rod 55 is attached to the spring 57 through a top block 56. The top block 56 is slidably penetrated into the cylinder frame 1. When the sliding cylinder 4 slides to the upper part of the cylinder frame 1, it pushes the top block 56 to move upward and compress the spring 57, causing the pull rod 55 to pull the second clamping strip 52 upward, and the first clamping strip 51 and the second clamping strip 52 to retract into the cylinder frame 1, facilitating the recovery of the cylinder frame 1.

[0026] Please refer to Figure 7 , a mine directional hydraulic fracturing method, including: S1. Drilling: Before selecting an appropriate position for fracturing operations, geological exploration and analysis are required to determine the optimal drilling position and direction; Use a drilling device to start drilling at a predetermined position, ensuring that the diameter and depth of the drilling hole meet the operation requirements. During the drilling process, promptly clean the cuttings and mud generated in the drilling hole to keep the drilling hole unobstructed; S2. Insert the cylinder frame: When the drilling reaches the predetermined depth, stop the drilling operation, prepare to insert the cylinder frame, suspend the cylinder frame on the drilling platform near the wellhead, ensure the stability and verticality of the cylinder frame, and install a sliding cylinder at the bottom of the cylinder frame; Slowly and carefully lower the cylinder frame into the drilling hole until the cylinder frame is completely inserted into the formation and reaches the predetermined position, ensuring that all components of the cylinder frame are not damaged during the insertion process and can be effectively anchored in the formation to ensure safety and stability; After inserting the cylinder frame, confirm the position and stability of the cylinder frame through inspection and measurement to ensure good contact and fixation with the formation. If any position deviation or instability is found, adjust and correct it in a timely manner to ensure the safety and stability of the cylinder frame; S3. Bit installation: Ensure that the bit is correctly installed and the spray rod is in the predetermined position. Insert the rotating rod into the cylinder frame until the bit is inserted into the sliding cylinder and firmly connected to the sliding cylinder; S4. Bit position adjustment: Lift the rotating rod to move the bit and the sliding cylinder upward to the horizontal well fracturing point at the bottom of the side groove area. Rotate the rotating rod to align the inclined plate with the corresponding side groove; S5. Horizontal well drilling and fracturing: Press down the rotating rod again. Since the downward movement of the sliding cylinder is restricted, at this time, the bit extends obliquely from the side groove under the action of the inclined plate to directionally drill a horizontal well. After reaching the predetermined length, start the fracturing pump to eject the fracturing fluid from the spray rod to fracture the formation within this range; S6. Fishbone-shaped horizontal branch fracturing: Repeat S4 and S5, and perform fracturing operations in different directions from bottom to top in sequence to fracture fishbone-shaped horizontal branch fractures in the formation within the entire side groove range; S7: Recovery device: The rotating rod drives the bit to be recovered to the ground, and at the same time, the sliding cylinder and the cylinder frame are also taken out of the ground.

[0027] The above-mentioned is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A mine directional hydraulic fracturing device, characterized in that, It includes a cylinder frame (1). Multiple side grooves (2) are provided on the side wall of the middle section of the cylinder frame (1). Multiple anchoring components (5) are provided on the outer wall of the lower part of the cylinder frame (1). A sliding cylinder (4) is slidably arranged in the cylinder frame (1). There is an opening on one side of the lower part of the sliding cylinder (4), and an inclined plate (41) is inside the opening; It further includes a rotating rod (3). A drill bit (31) is provided below the rotating rod (3). A spray rod (32) is sleeved on the outer wall of the rotating rod (3) above the drill bit (31).

2. The mine directional hydraulic fracturing equipment according to claim 1, characterized in that, Inner clamping teeth (21) are distributed on the inner wall of the cylinder frame (1) between the side grooves (2). Outer clamping teeth (42) are distributed on the outer wall of the sliding cylinder (4).

3. The mine directional hydraulic fracturing equipment according to claim 1, characterized in that, Multiple elastically telescopic wedges (43) are distributed on the inner wall of the upper part of the sliding cylinder (4). The upper surface of the wedge (43) is an inclined surface and the lower surface is a horizontal surface.

4. A mine directional hydraulic fracturing device according to claim 1, characterized in that, A torque block (45) is fixed on the inner wall of the upper part of the sliding cylinder (4). The torque block (45) is a polyhedron with pointed upper and lower ends and a wide middle part.

5. The mine directional hydraulic fracturing equipment according to claim 1, characterized in that Two rotating blocks (44) are rotatably arranged on the side wall of the sliding cylinder (4). The center of the rotating block (44) and the sliding cylinder (4) are connected by a torsion spring. The torsion spring makes the rotating block (44) in a horizontal state in the natural state.

6. The mine directional hydraulic fracturing equipment according to claim 1, characterized in that, The anchoring component (5) includes a first clamping strip (51) and a second clamping strip (52). A through groove (53) is formed in the first clamping strip (51). A plug pin (54) is slidably connected in the through groove (53). The plug pin (54) is fixed in the cylinder frame (1). The first clamping strip (51) penetrates into the cylinder frame (1); The second clamping strip (52) is hinged to the outer end of the first clamping strip (51). The other end of the second clamping strip (52) is hinged to a pull rod (55). The pull rod (55) is slidably embedded in the outer wall of the cylinder frame (1).

7. The mine directional hydraulic fracturing equipment according to claim 6, characterized in that, Multiple springs (57) are embedded in the upper part of the cylinder frame (1). The top of each pull rod (55) is attached to the spring (57) through a top block (56). The top block (56) is slidably penetrated into the cylinder frame (1).

8. The mine directional hydraulic fracturing equipment according to claim 1, characterized in that Mine directional hydraulic fracturing method, including: S1. Drilling: Before performing fracturing operations at an appropriate location, geological exploration and analysis are required to determine the optimal drilling location and direction; Use drilling equipment to start drilling at the predetermined location, ensuring that the diameter and depth of the drilling meet the operation requirements.

9. During the drilling process, timely clean the cuttings and mud generated in the drilling hole to keep the drilling hole unobstructed; S2. Insert the cylinder frame: When the drilling reaches the predetermined depth, stop the drilling operation and prepare to insert the cylinder frame. Hang the cylinder frame on the drilling platform near the wellhead, ensure the stability and verticality of the cylinder frame, and install a sliding cylinder at the bottom of the cylinder frame; Slowly and carefully lower the cylinder frame into the drilling hole until the cylinder frame is completely inserted into the formation and reaches the predetermined position, ensuring that all components of the cylinder frame are not damaged during the insertion process and can be effectively anchored in the formation to ensure safety and stability; After inserting the cylinder frame, confirm the position and stability of the cylinder frame through inspection and measurement to ensure its good contact and fixation with the formation. If any position deviation or instability is found, adjust and correct it in time to ensure the safety and stability of the cylinder frame; S3. Bit Drill Installation: Ensure the correct installation of the bit and the spray bar is in the predetermined position. Insert the rotating rod into the barrel frame until the bit is inserted into the sliding barrel and firmly connected to the sliding barrel. S4. Bit Position Adjustment: Lift the rotating rod to move the bit and the sliding barrel upward to the horizontal well fracturing point at the lowest part of the side groove area. Rotate the rotating rod to align the inclined plate with the side groove in the corresponding direction. S5. Horizontal Well Drilling and Fracturing: Press down the rotating rod again. Since the downward movement of the sliding barrel is restricted, at this time, the bit extends obliquely from the side groove under the action of the inclined plate to directionally drill a horizontal well. After reaching the predetermined length, start the fracturing pump to eject the fracturing fluid from the spray bar to fracture the formation within this range. S6. Fishbone-Type Horizontal Branch Fracturing: Repeat S4 and S5, and perform fracturing operations in different directions from bottom to top in sequence to fracture the formation within the entire side groove range to form fishbone-type horizontal branch fractures. S7: Recovery Device: The rotating rod drives the bit to be recovered to the ground, and at the same time, the sliding barrel and the barrel frame are also brought out of the ground.

Images