Novel drilling equipment for preventing slurry overflowing in directional drilling construction

Abstract

The utility model discloses novel drilling equipment for preventing slurry overflowing in directional drilling construction, which relates to the technical field of drilling equipment and comprises a slurry pump, a controller, a drilling machine, adjusting units arranged on two sides of the bottom end of the drilling machine and a detection unit arranged in the middle of the bottom end of the drilling machine. The adjusting unit comprises a fixing frame fixedly connected to the two sides of the bottom end of the drilling machine, a rotating assembly arranged in the fixing frame and an adjusting assembly arranged at the bottom end of the rotating assembly; the detection unit comprises a drill rod arranged in the middle of the bottom end of the drilling machine, a sensing assembly arranged in the drill rod and a tunneling assembly arranged at the bottom end of the sensing assembly. According to the novel drilling equipment capable of preventing the slurry from overflowing in the directional drilling construction, the pressure of the slurry at each position of the drilling rod is detected in real time and compared with the pressure of an overlying soil layer in a working place, meanwhile, the flow of the slurry pump is controlled to ensure that the slurry cannot overflow, and meanwhile, the drilling direction of a drilling machine can be stably adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a new type of drilling equipment for preventing slurry from bubbling during directional drilling construction. Background Art

[0002] Horizontal directional drilling has the advantages of laying pipelines without excavation, without affecting traffic and the surrounding environment, and without damaging ground objects. However, slurry is prone to occur during the construction process of directional drilling, causing soil and environmental pollution, damage to ground objects, and compensation disputes, which have a serious impact on directional drilling construction.

[0003] The current technology is to control and reduce slurry from aspects such as construction process control, mud ratio, stratum type and depth, but there is no technology to improve drilling tools and develop new drilling tools to control slurry. Construction process improvement, increase the angle of directional drilling in and out of the soil, can only increase the angle appropriately and cannot increase it indefinitely. The angle is limited by materials, curvature radius and terrain, and there is limited room for improvement. Drilling speed control, reamer selection, and mud ratio are only auxiliary measures to reduce slurry, and cannot fundamentally solve the slurry problem. The stratum and depth selection are limited by geological conditions, which only reduce the possibility of slurry, and the risk of slurry still exists.

[0004] The existing technical methods are all to reduce the probability of slurry bubbling, but no analysis is made on the mechanical principle of slurry bubbling to find a thorough solution to the slurry bubbling. In addition, it is difficult to stably adjust the drilling direction of the drilling rig during the construction process, resulting in poor applicability of the equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a new type of drilling equipment for preventing slurry from directional drilling construction, so as to solve the problem that the slurry is not analyzed from the mechanical principle of slurry, a method for completely solving the slurry is not found, and it is difficult to stably adjust the drilling direction of the drilling rig during the construction process, resulting in poor applicability of the equipment.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A new drilling equipment for preventing mud from bubbling during directional drilling construction, comprising a mud pump, a controller and a drilling rig, and also comprising an adjustment unit arranged at both sides of the bottom end of the drilling rig, and a detection unit arranged at the middle of the bottom end of the drilling rig;

[0008] The adjustment unit includes a fixed frame fixedly connected to both sides of the bottom end of the drilling rig, a rotating assembly arranged inside the fixed frame, and an adjustment assembly arranged at the bottom end of the rotating assembly;

[0009] The detection unit comprises a drill rod arranged at the middle of the bottom end of the drilling rig, a sensor component arranged inside the drill rod, and a tunneling component arranged at the bottom end of the sensor component.

[0010] Preferably, the rotating assembly in the adjusting unit includes a limiting column fixedly connected to the middle of the fixed frame, a rotating block arranged on the outside of the limiting column, a threaded hole opened in the middle of the rotating block, a rotating column fixedly connected to the bottom end of the rotating block, and a hollow bolt arranged on the front of the fixed frame.

[0011] Preferably, the threaded hole in the adjustment unit is larger than the diameter of the limiting column, and the outer side of the hollow bolt fits with the threaded hole, and the inner side of the hollow bolt fits with the outer side of the limiting column.

[0012] Preferably, the adjustment component in the adjustment unit includes a clamping groove opened inside the rotating column, a locking bolt arranged at the bottom end of the front side of the rotating column, a clamping column arranged inside the clamping groove and extending to the bottom end of the clamping groove, a plurality of threaded grooves opened on the front side of the clamping column, a flexible plate fixedly connected to the bottom end of the clamping column, a fixed block fixedly connected to the bottom end of the flexible plate, and a ground nail fixedly connected to the bottom end of the fixed block.

[0013] Preferably, one end of the locking bolt in the adjustment unit extends into the corresponding thread groove.

[0014] Preferably, the sensor assembly in the detection unit includes a plurality of first electronic pressure gauges fixedly connected to the middle of the drill pipe housing, a data converter arranged in the middle of the drill pipe, and a second electronic pressure gauge fixedly connected to the bottom end of the data converter.

[0015] Preferably, the excavation assembly in the detection unit includes a drill bit fixedly connected to the bottom end of the drill rod, and a limit ring arranged at the bottom end of the drill bit;

[0016] The bottom end of the second electronic pressure gauge extends to the interior of the drill bit.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. In the utility model, through the setting of the adjustment unit, when it is necessary to adjust the drilling direction of the drilling rig, first remove the two hollow bolts, then manually rotate the direction of the drilling rig and the drill rod, at this time the drilling rig will make a circular motion along one of the rotating blocks, and then insert one of the hollow bolts into the threaded hole to fix one end of the drilling rig, so that a rotating column is fixed, and then adjust the direction of the other rotating column, and then use the hollow bolt to plug it back after the adjustment is completed, and use two ground nails to fix the drilling rig, and at the same time, the two locking bolts can be removed, and the clamping column is inserted into the inside of the clamping groove to adjust the overall height of the drilling rig, and the two locking bolts are inserted into different clamping grooves, so that the drilling direction of the drilling rig can be stably adjusted, thereby improving the applicability of the equipment.

[0019] 2. In the utility model, through the setting of the detection unit, during the directional drilling construction process, the mud pressure is generally less than the pressure of the overlying soil layer. During the on-site construction, the flow of the pump or the poor mud reflux causes pressure buildup. When the mud pressure is higher than the pressure of the overlying soil layer and the shear strength of the soil layer, the soil layer will bulge, deform and be damaged, and mud will bubble up. Only by knowing the pressure and depth of the mud in the borehole and controlling the mud pressure to be less than the pressure of the overlying soil layer, the problem of mud bubble up can be completely solved. By setting up multiple first electronic pressure gauges and second electronic pressure gauges to detect the pressure in the borehole in real time, and transmitting the pressure signal back to the controller through the data converter, the pressure flow of the mud pump is controlled by the data on the controller during the drilling process of the drill rod, ensuring that the pressure of the mud in the borehole is always less than the total pressure of the overlying soil layer, thereby ensuring that the mud will not bubble up. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the drilling rig, the adjustment unit and the detection unit in the utility model;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the drilling rig in the utility model;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 5 It is a cross-sectional view of the drill rod in the utility model;

[0025] Figure 6 It is a cross-sectional view of the drill bit in the utility model.

[0026] In the figure:

[0027] 1. Mud pump;

[0028] 2. Controller;

[0029] 3. Drilling rig;

[0030] 4. Adjustment unit; 401. Fixed frame; 402. Rotating column; 403. Locking bolt; 404. Threaded groove; 405. Snap-on column; 406. Flexible plate; 407. Fixed block; 408. Ground nail; 409. Snap-on groove; 410. Rotating block; 411. Threaded hole; 412. Hollow bolt; 413. Limiting column;

[0031] 5. Detection unit; 501. Drill rod; 502. First electronic pressure gauge; 503. Drill bit; 504. Data converter; 505. Second electronic pressure gauge; 506. Limit ring. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, a new drilling equipment for preventing mud from bubbling during directional drilling construction includes a mud pump 1, a controller 2 and a drilling rig 3, and also includes an adjustment unit 4 arranged on both sides of the bottom end of the drilling rig 3, and a detection unit 5 arranged in the middle of the bottom end of the drilling rig 3;

[0034] The adjusting unit 4 includes a fixed frame 401 fixedly connected to both sides of the bottom end of the drilling rig 3, a rotating assembly arranged inside the fixed frame 401, and an adjusting assembly arranged at the bottom end of the rotating assembly;

[0035] The detection unit 5 includes a drill rod 501 disposed in the middle of the bottom end of the drilling rig 3, a sensor component disposed inside the drill rod 501, and a tunneling component disposed at the bottom end of the sensor component.

[0036] The rotating assembly in the adjustment unit 4 includes a limiting column 413 fixedly connected to the middle of the fixed frame 401, a rotating block 410 arranged on the outside of the limiting column 413, a threaded hole 411 opened in the middle of the rotating block 410, a rotating column 402 fixedly connected to the bottom end of the rotating block 410, and a hollow bolt 412 arranged on the front of the fixed frame 401.

[0037] The threaded hole 411 in the adjustment unit 4 is larger than the diameter of the limiting column 413 , and the outer side of the hollow bolt 412 fits with the threaded hole 411 , and the inner side of the hollow bolt 412 fits with the outer side of the limiting column 413 .

[0038] The adjustment components in the adjustment unit 4 include a snap-in groove 409 opened inside the rotating column 402, a locking bolt 403 arranged at the bottom end of the front side of the rotating column 402, a snap-in column 405 arranged inside the snap-in groove 409 and extending to the bottom end of the snap-in groove 409, a plurality of threaded grooves 404 opened on the front side of the snap-in column 405, a flexible plate 406 fixedly connected to the bottom end of the snap-in column 405, a fixing block 407 fixedly connected to the bottom end of the flexible plate 406, and a ground nail 408 fixedly connected to the bottom end of the fixing block 407.

[0039] One end of the locking bolt 403 in the adjustment unit 4 extends into the corresponding thread groove 404 .

[0040] The sensor assembly in the detection unit 5 includes a plurality of first electronic pressure gauges 502 fixedly connected to the middle of the outer shell of the drill pipe 501 , a data converter 504 arranged in the middle of the inside of the drill pipe 501 , and a second electronic pressure gauge 505 fixedly connected to the bottom end of the data converter 504 .

[0041] The excavation assembly in the detection unit 5 includes a drill bit 503 fixedly connected to the bottom end of the drill rod 501, and a limit ring 506 arranged at the bottom end of the drill bit 503;

[0042] The bottom end of the second electronic pressure gauge 505 extends to the inside of the drill bit 503 .

[0043] When it is necessary to adjust the drilling direction of the drilling rig 3, first remove the two hollow bolts 412, then manually rotate the direction of the drilling rig 3 and the drill rod 501, and then insert one of the hollow bolts 412 into the threaded hole 411 to fix one end of the drilling rig 3, so that a rotating column 402 is fixed, and then adjust the direction of the other rotating column 402. After the adjustment, use the hollow bolt 412 to plug it back, and use the two ground nails 408 to fix the drilling rig 3. At the same time, the two locking bolts 403 can be removed, and the clamping column 405 is inserted into the inside of the clamping groove 409 to adjust the overall height of the drilling rig 3. With the help of two locking bolts 403 inserted into different clamping grooves 409, the drilling direction of the drilling rig 3 can be stably adjusted, thereby improving the applicability of the equipment. Example

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, a new drilling equipment for preventing mud from bubbling during directional drilling construction includes a mud pump 1, a controller 2 and a drilling rig 3, and also includes an adjustment unit 4 arranged on both sides of the bottom end of the drilling rig 3, and a detection unit 5 arranged in the middle of the bottom end of the drilling rig 3;

[0045] The adjusting unit 4 includes a fixed frame 401 fixedly connected to both sides of the bottom end of the drilling rig 3, a rotating assembly arranged inside the fixed frame 401, and an adjusting assembly arranged at the bottom end of the rotating assembly;

[0046] The detection unit 5 includes a drill rod 501 disposed in the middle of the bottom end of the drilling rig 3, a sensor component disposed inside the drill rod 501, and a tunneling component disposed at the bottom end of the sensor component.

[0047] The rotating assembly in the adjustment unit 4 includes a limiting column 413 fixedly connected to the middle of the fixed frame 401, a rotating block 410 arranged on the outside of the limiting column 413, a threaded hole 411 opened in the middle of the rotating block 410, a rotating column 402 fixedly connected to the bottom end of the rotating block 410, and a hollow bolt 412 arranged on the front of the fixed frame 401.

[0048] The threaded hole 411 in the adjustment unit 4 is larger than the diameter of the limiting column 413 , and the outer side of the hollow bolt 412 fits with the threaded hole 411 , and the inner side of the hollow bolt 412 fits with the outer side of the limiting column 413 .

[0049] The adjustment components in the adjustment unit 4 include a snap-in groove 409 opened inside the rotating column 402, a locking bolt 403 arranged at the bottom end of the front side of the rotating column 402, a snap-in column 405 arranged inside the snap-in groove 409 and extending to the bottom end of the snap-in groove 409, a plurality of threaded grooves 404 opened on the front side of the snap-in column 405, a flexible plate 406 fixedly connected to the bottom end of the snap-in column 405, a fixing block 407 fixedly connected to the bottom end of the flexible plate 406, and a ground nail 408 fixedly connected to the bottom end of the fixing block 407.

[0050] One end of the locking bolt 403 in the adjustment unit 4 extends into the corresponding thread groove 404 .

[0051] The sensor assembly in the detection unit 5 includes a plurality of first electronic pressure gauges 502 fixedly connected to the middle of the outer shell of the drill pipe 501 , a data converter 504 arranged in the middle of the inside of the drill pipe 501 , and a second electronic pressure gauge 505 fixedly connected to the bottom end of the data converter 504 .

[0052] The excavation assembly in the detection unit 5 includes a drill bit 503 fixedly connected to the bottom end of the drill rod 501, and a limit ring 506 arranged at the bottom end of the drill bit 503;

[0053] The bottom end of the second electronic pressure gauge 505 extends to the inside of the drill bit 503 .

[0054] During directional drilling, the mud pressure is generally less than the pressure of the overlying soil layer. During on-site construction, the flow of the mud pump 1 or the poor mud reflux will cause pressure buildup. When the mud pressure is higher than the pressure of the overlying soil layer and the shear strength of the soil layer, the soil layer will bulge, deform and break, and mud will bubble up. Only by knowing the pressure and depth of the mud in the borehole and controlling the mud pressure to be less than the pressure of the overlying soil layer can the problem of mud bubble up be completely solved. Before drilling, survey and collect the geophysical properties of the work site, including the type, composition, moisture content, density, etc. of the rock and soil, calculate the sum of the gravity and shear stress of the floating rock and soil, input it into the controller 2 to calculate the total pressure of the overlying soil layer, and The drilling equipment also has an expander and a pull-back pipe. During the drilling process, the pressure at the drill bit 503 is the highest. The first electronic pressure gauge 502 and the second electronic pressure gauge 505 on the drill rod 501 behind the drill bit 503 transmit the pressure signal to the controller 2 through the data converter 504. If the mud pressure is too high, the flow rate of the mud pump 1 is reduced. During the expansion and pull-back process, the expander and the pull-back pipe squeeze and block the borehole, causing the pressure of the mud in the borehole to increase, reducing the flow rate of the mud pump 1. If the pressure increase still cannot be controlled, the reverse transmission function of the mud pump 1 is switched to suck the mud in the pipe, thereby quickly reducing the pressure in the borehole and preventing bubbling.

[0055] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new drilling device for preventing mud from bubbling during directional drilling, comprising a mud pump (1), a controller (2) and a drilling rig (3), characterized in that: It also includes adjustment units (4) arranged on both sides of the bottom end of the drilling rig (3), and a detection unit (5) arranged in the middle of the bottom end of the drilling rig (3); The adjustment unit (4) comprises a fixed frame (401) fixedly connected to both sides of the bottom end of the drilling rig (3), a rotating assembly arranged inside the fixed frame (401), and an adjustment assembly arranged at the bottom end of the rotating assembly; The detection unit (5) comprises a drill rod (501) arranged at the middle of the bottom end of the drilling machine (3), a sensor component arranged inside the drill rod (501), and a tunneling component arranged at the bottom end of the sensor component.

2. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 1, characterized in that: The rotating assembly in the adjustment unit (4) comprises a limiting column (413) fixedly connected to the middle of the fixed frame (401), a rotating block (410) arranged outside the limiting column (413), a threaded hole (411) opened in the middle of the rotating block (410), a rotating column (402) fixedly connected to the bottom end of the rotating block (410), and a hollow bolt (412) arranged on the front of the fixed frame (401).

3. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 2, characterized in that: The threaded hole (411) in the adjustment unit (4) is larger than the diameter of the limiting column (413), and the outer side of the hollow bolt (412) fits with the threaded hole (411), and the inner side of the hollow bolt (412) fits with the outer side of the limiting column (413).

4. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 3, characterized in that: The adjustment assembly in the adjustment unit (4) comprises a clamping groove (409) provided inside the rotating column (402), a locking bolt (403) provided at the bottom end of the front face of the rotating column (402), a clamping column (405) provided inside the clamping groove (409) and extending to the bottom end of the clamping groove (409), a plurality of thread grooves (404) provided on the front face of the clamping column (405), a flexible plate (406) fixedly connected to the bottom end of the clamping column (405), a fixing block (407) fixedly connected to the bottom end of the flexible plate (406), and a ground nail (408) fixedly connected to the bottom end of the fixing block (407).

5. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 4, characterized in that: One end of the locking bolt (403) in the adjustment unit (4) extends into the interior of the corresponding thread groove (404).

6. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 5, characterized in that: The sensor assembly in the detection unit (5) comprises a plurality of first electronic pressure gauges (502) fixedly connected to the middle of the outer shell of the drill rod (501), a data converter (504) arranged in the middle of the interior of the drill rod (501), and a second electronic pressure gauge (505) fixedly connected to the bottom end of the data converter (504).

7. A new type of drilling equipment for preventing slurry from bubbling during directional drilling construction according to claim 6, characterized in that: The excavation assembly in the detection unit (5) comprises a drill bit (503) fixedly connected to the bottom end of the drill rod (501), and a limit ring (506) arranged at the bottom end inside the drill bit (503); The bottom end of the second electronic pressure gauge (505) extends to the inside of the drill bit (503).

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