Wired transmission drill rod for directional drilling in underground coal mine

Abstract

The invention relates to the technical field of directional drilling rods, in particular to a wired transmission drilling rod for coal mine underground directional drilling. When the direction of the drill rod needs to be changed, if the outer side of the drill rod makes contact with the well wall at the bent position, the first pipe and the second pipe are away from each other in a reciprocating mode and get close to each other, the outer walls of the first pipe and the second pipe continuously rub against the well wall, relative movement occurs, and then the problem of drill jamming between the drill rod body and the well wall is avoided. Moreover, in the moving process of the drill rod body, the first pipe and the second pipe are in a wriggling state on the drill rod body due to the fact that the first pipe and the second pipe are in the reciprocating mutual approaching and mutual departing state, and therefore the situation that water on the well wall is condensed on the drill rod body can be effectively avoided; and the drill rod body and a drill bit on the drill rod body are stuck.

Description

Technical Field

[0001] The invention relates to the technical field of directional drilling rods, in particular to a wired transmission drilling rod for directional drilling in underground coal mines. Background Art

[0002] The main purpose of the drill pipe is to transport drilling mud to the drill bit. The drill pipe can be used many times in coal mining and must be able to withstand huge internal and external pressure, twisting, bending and vibration; Drill rods are divided into ordinary drill rods and directional drill rods. Directional drill rods can change the drilling direction in real time during the drilling process; directional drill rods are also called wired transmission drill rods; The wired transmission drill pipe is a special drill pipe with integrated data transmission function. It adds internal wires and connectors to the ordinary drill pipe, so that the ground control system can receive downhole data in real time and perform remote control. The internal structure of the wired transmission drill pipe is much more complicated than that of the ordinary drill pipe, and contains a variety of precision components. When the wired transmission drill pipe is drilling downhole, the wired drill pipe can transmit its position and drilling direction to the ground in real time, and the ground transmits control signals through the internal wires, so that the drill pipe can change the drilling direction. When the wired transmission drill pipe is used in coal mines, especially when the wired transmission drill pipe is changing direction or moving, the drilling fluid forms mud bags on the well wall, sticks to the drill pipe, and the wellbore is too curved, resulting in uneven force on the drill pipe in the curved section, which is easy to get stuck in the bend; the drill pipe and the drill bit at its end may get stuck during the drilling process, which in turn leads to drilling failures.

[0003] In summary, in order to solve the technical problem raised in this article, the present invention proposes a wired transmission drill rod for directional drilling in underground coal mines. Summary of the invention

[0004] The present invention proposes a wired transmission drill rod for directional drilling in underground coal mines, the wired transmission drill rod comprising a drill rod body; the drill rod body is a hollow tube, and a data transmission line, a connector, a central positioning device and a signal repeater are arranged inside the drill rod body; the outer walls of both ends of the drill rod body are provided with drill rod nozzles; the drill rod body also includes: A strip-shaped slider, which is arranged on the outer wall of the middle part of the drill pipe body; A sliding tube, wherein the sliding tube is slidably connected to the outer wall of the drill pipe body, a sliding groove is provided on the inner wall of the sliding tube, and a strip sliding block is slidably connected inside the sliding groove, and a spring is provided between the strip sliding block and the sliding groove; Blocking rings, which are fixedly arranged at both ends of the drill pipe body; The sliding pipe is arranged in two sections, the sliding pipe is divided into a first pipe and a second pipe, a telescopic device is arranged between the first pipe and the second pipe; a sliding rod is arranged between the first pipe and the second pipe.

[0005] As a preferred solution of the present application; the drill rod nozzle is opened on the surface of the barrier ring, and the drill rod nozzle is divided into a water spray port and a water delivery port; the water spray port is parallel to the drill rod body, the water delivery port is perpendicular to the drill rod body, and one end of the water delivery port is connected to the inside of the drill rod body, and the other end is connected to the middle of the water spray port.

[0006] As a preferred solution of the present application; a connecting plate is provided at one end of the blocking ring close to the middle of the drill rod body, and a fixed block is provided at one end of the connecting plate away from the drill rod body; a cleaning rod is slidably connected to the inside of the fixed block through a spring, and the cleaning rod corresponds to the water outlet; one end of the cleaning rod away from the blocking ring extends out of the fixed block, and a ring plate is provided at one end of multiple cleaning rods away from the fixed block.

[0007] As a preferred solution of the present application; the middle part of the cleaning rod is hollow, and an opening is provided at one end of the cleaning rod close to the blocking ring; a connecting hole is provided at the lower end of the cleaning rod, and an opening is provided on the outer side of one end of the cleaning rod away from the connecting hole, and when the cleaning rod enters the water outlet, the connecting hole is connected with the water outlet.

[0008] As a preferred solution of the present application; when the cleaning rod is located inside the fixed block, the opening at one end of the cleaning rod close to the blocking ring, the connecting hole and the opening on the outside of one end of the cleaning rod away from the connecting hole are all located inside the fixed block.

[0009] As a preferred solution of the present application, the end of the cleaning rod close to the blocking ring is conical.

[0010] As a preferred solution of the present application, the outer walls of the No. 1 pipe and the No. 2 pipe on the sliding pipe are both provided with cutting blocks, and the cutting blocks are spirally distributed; and the cutting blocks on the No. 1 pipe and the No. 2 pipe are separated from each other.

[0011] As a preferred solution of the present application, an arc-shaped groove is provided on the outer wall of each of the barrier rings, and the arc-shaped groove is inclined, and the arc-shaped groove is not connected to the water spray port and the water delivery port.

[0012] The beneficial effects of the present invention are as follows: When the drill pipe needs to change direction, if the outer side of the drill pipe contacts the well wall at the bend, pipe No. 1 and pipe No. 2 move back and forth towards each other, causing the outer walls of pipe No. 1 and pipe No. 2 to constantly rub against the well wall and move relative to each other, thereby avoiding the problem of drill bit jamming between the drill pipe body and the well wall; and when the drill pipe body moves, pipe No. 1 and pipe No. 2 are in a creeping state on the drill pipe body, so it can effectively avoid condensation on the well wall on the drill pipe body, resulting in the problem of drill bit jamming in the drill pipe body and the drill bit on the drill pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional diagram of the drill pipe body of the present invention; Figure 2 It is a structural view of the sliding pipe in the present invention; Figure 3 It is an exploded view of the No. 1 pipe and the No. 2 pipe in the present invention; Figure 4 It is a structural view of the barrier ring in the present invention; Figure 5 yes Figure 4 A partial cross-sectional view of Figure 6 yes Figure 5 A partial enlarged view of the .

[0014] In the figure: drill pipe body 1, strip slider 11, slide pipe 12, No. 1 pipe 121, No. 2 pipe 122, telescopic device 123, blocking ring 13, water spray port 131, water delivery port 132, connecting plate 133, fixing block 134, cleaning rod 135, annular plate 136, connecting hole 137, arc groove 138, cutting block 14. DETAILED DESCRIPTION

[0015] 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 explained below in conjunction with specific implementation methods.

[0016] Embodiment 1:

[0017] like Figures 1 to 6 As shown; a wired transmission drill rod for directional drilling in coal mines, the wired transmission drill rod comprises a drill rod body 1; the drill rod body 1 is a hollow tube, and a data transmission line, a connector, a central positioning device and a signal repeater are arranged inside the drill rod body 1; the outer walls of both ends of the drill rod body 1 are provided with drill rod nozzles; the drill rod body 1 also includes: A strip-shaped slider 11, which is arranged on the outer wall of the middle part of the drill rod body 1; A slide tube 12, wherein the slide tube 12 is slidably connected to the outer wall of the drill pipe body 1, a slide groove is provided on the inner wall of the slide tube 12, and the strip slider 11 is slidably connected inside the slide groove, and a spring is provided between the strip slider 11 and the slide groove; Blocking rings 13, which are fixedly arranged at both ends of the drill pipe body 1; The slide pipe 12 is provided in two sections, and is divided into a first pipe 121 and a second pipe 122. A telescopic device 123 is provided between the first pipe 121 and the second pipe 122; a slide rod is provided between the first pipe 121 and the second pipe 122; The drill pipe nozzle is provided on the surface of the blocking ring 13, and is divided into a water spray port 131 and a water delivery port 132; the water spray port 131 is parallel to the drill pipe body 1, the water delivery port 132 is perpendicular to the drill pipe body 1, and one end of the water delivery port 132 is connected to the inside of the drill pipe body 1, and the other end is connected to the middle of the water spray port 131; A connecting plate 133 is provided at one end of the blocking ring 13 close to the middle of the drill pipe body 1, and a fixing block 134 is provided at one end of the connecting plate 133 away from the drill pipe body 1; a cleaning rod 135 is slidably connected to the inside of the fixing block 134 through a spring, and the cleaning rod 135 corresponds to the water spray port 131; the cleaning rod 135 extends out of the fixing block 134 at one end away from the blocking ring 13, and a ring plate 136 is provided at one end of multiple cleaning rods 135 away from the fixing block 134.

[0018] The specific workflow is as follows: When in use, a drill bit is connected to one end of the drill rod body 1, and the drill bit drills underground, driving the drill rod body 1 to drill underground. During the process, the data transmission line, connector, central positioning device and signal repeater in the drill rod body 1 work to transmit the travel direction and position of the drill rod body 1 and the drill bit to the ground in real time. After the ground or the position information of the drill rod body 1 is received, the staff can transmit the signal to the drill rod body 1 and the drill bit through the data transmission line, connector and central positioning device according to the pre-designed drilling track, and the drill bit changes the drilling direction, driving the drill rod to change the travel direction, so that the drill rod body 1 can move according to the pre-designed track until it is drilled out from the ground at the other end; In the above process, a slide pipe 12 is arranged outside the middle of the drill rod body 1, and the slide pipe 12 is divided into a first tube 121 and a second tube 122, and a slide groove is provided on the inner wall of the first tube 121 and the second tube 122, so that the strip slider 11 arranged outside the drill rod body 1 is slidably connected inside the slide groove through a spring. During the movement of the drill rod body 1, the mud in the ground mud pool is pumped into the inside of the drill rod body 1 through a high-pressure pump, and then sprayed out through the drill rod nozzle, so that the mud lubricates the drill rod, and the mud can bring the soil generated during drilling out of the borehole; When the drill rod body 1 is drilling into the ground, the drill rod body 1 will move with the sliding tube 12, and in the process of the movement of the drill rod body 1, the sliding tube 12 will slide on the surface of the drill rod body 1, and the sliding tube 12 is composed of a No. 1 tube 121 and a No. 2 tube 122, and a telescopic device 123 is arranged between the No. 1 tube 121 and the No. 2 tube 122 (the telescopic device 123 is an electric telescopic cylinder in the prior art), so that in the process of the drill rod body 1 drilling into the ground, the telescopic device 123 extends and contracts, so that the gap between the No. 1 tube 121 and the No. 2 tube 122 is continuously enlarged and reduced, so that the No. 1 tube 121 and the No. 2 tube 122 move away from and approach each other on the drill rod body 1; when the drill rod body 1 moves to the bending position, the No. 1 tube 121 and the No. 2 tube 122 move away from and approach each other. The tube 122 is constantly moving on the drill pipe body 1, so that when the drill pipe needs to change direction, if the outer side of the drill pipe contacts the well wall at the bend, the No. 1 tube 121 and the No. 2 tube 122 move back and forth away from each other and approach each other, so that the outer walls of the No. 1 tube 121 and the No. 2 tube 122 are constantly rubbing against the well wall, and relative movement occurs, thereby avoiding the problem of drill bit stuck between the drill pipe body 1 and the well wall; and when the drill pipe body 1 moves, since the No. 1 tube 121 and the No. 2 tube 122 are in a state of reciprocating approaching and moving away from each other, the No. 1 tube 121 and the No. 2 tube 122 are in a creeping state on the drill pipe body 1, so it can effectively avoid condensation on the well wall on the drill pipe body 1, resulting in the problem of drill bit stuck on the drill pipe body 1 and the drill bit on the drill pipe body 1; Furthermore, when the drill pipe body 1 is drilling into the ground, if the drill pipe body 1 is stuck, the contraction force between the No. 1 pipe 121 and the No. 2 pipe 122 can be increased, so that when the No. 1 pipe 121 and the No. 2 pipe 122 are close to each other, the impact force of the No. 1 pipe 121 and the No. 2 pipe 122 when one end of the No. 1 pipe 121 and the No. 2 pipe 122 is close to each other is increased, so that the No. 1 pipe 121 and the No. 2 pipe 122 vibrate, and the soil lumps bonded between the well wall and the drill pipe body 1 are shaken off during the vibration; so that the No. 1 pipe 121 and the No. 2 pipe 122 are not bonded to the soil lumps, thereby reducing the probability of the drill pipe being stuck. The drill pipe nozzle on the drill pipe body 1 is opened on the blocking ring 13, so that the water spray port 131 on the drill pipe nozzle is parallel to the drill pipe body 1, the water delivery port 132 is perpendicular to the drill pipe body 1, and the water delivery port 132 is connected to the inside of the drill pipe body 1, so that the mud on the ground can be pumped from the mud pool into the inside of the drill pipe body 1, and then enter the water delivery port 132, the mud enters the water spray port 131 through the water delivery port 132, and then passes through the water spray port 131 The mud is sprayed out from both sides of the blocking ring 13, so as to lubricate the drill pipe body 1 and the drill bit; in the process of mud spraying out from the water spray port 131, the No. 1 pipe 121 and the No. 2 pipe 122 are in reciprocating motion; when the No. 1 pipe 121 and the No. 2 pipe 122 move away from each other, the end of the No. 1 pipe 121 and the No. 2 pipe 122 moving away from each other will push the annular plate 136, and after the annular plate 136 is pushed, the annular plate 136 will One end of each cleaning rod 135 is pushed synchronously. After the cleaning rod 135 is pushed, the cleaning rod 135 will move toward the position of the water outlet 131. As the No. 1 pipe 121 and the No. 2 pipe 122 continue to push the annular plate 136, the cleaning rod 135 will enter the water outlet 131, so that the cleaning rod 135 extends out of the water outlet 131. In the process of the cleaning rod 135 entering the water outlet 131, the outer wall of the cleaning rod 135 will clean the inner wall of the water outlet 131 to avoid the soil being embedded in the water outlet 131 and clogging the water outlet 131 when drilling into the underground soil; making it difficult for the mud in the water outlet 131 to be sprayed out, or the spraying amount is reduced, resulting in insufficient lubrication of the drill rod body 1 and the drill bit body, further avoiding the problem of drill jamming; when the No. 1 pipe 121 and the No. 2 pipe 122 are reset, the spring between the cleaning rod 135 and the fixed block 134 realizes the reset of the cleaning rod 135.

[0019] Embodiment 2:

[0020] like Figures 2 to 6 As shown; the middle part of the cleaning rod 135 is hollow, and an opening is provided at one end of the cleaning rod 135 close to the blocking ring 13; a connecting hole 137 is provided at the lower end of the cleaning rod 135, and an opening is provided at the outer side of one end of the cleaning rod 135 away from the connecting hole 137, and when the cleaning rod 135 enters the water spray port 131, the connecting hole 137 is connected with the water delivery port 132.

[0021] The specific workflow is as follows: On the basis of the above-mentioned embodiment 1, the middle part of the cleaning rod 135 is hollow, and an opening is provided at one end of the cleaning rod 135 close to the blocking ring 13, a connecting hole 137 is provided at the lower end of the cleaning rod 135, and an opening is provided at one end of the cleaning rod 135 away from the connecting hole 137. When the cleaning rod 135 enters the water spout 131, the connecting hole 137 is connected to the water delivery port 132. On the basis of the above-mentioned embodiment, when the cleaning rod 135 enters the water spout 131, the water delivery port 132 on the lower side of the cleaning rod 135 is opened. 2 is connected with the communication port at the lower end of the cleaning rod 135, and the mud enters the interior of the cleaning rod 135 through the water delivery port 132, and then sprays out from the openings at both ends of the cleaning rod 135, so that when the cleaning rod 135 cleans the water spray port 131, the mud can still be sprayed out to lubricate the drill rod body 1 and the drill bit at one end of the drill rod body 1, and the mud will not be unable to be sprayed out when the cleaning rod 135 cleans the water spray port 131, thereby avoiding the problem of poor lubrication effect caused by the inability to spray mud, and further avoiding the problem of drill sticking.

[0022] Embodiment three:

[0023] like Figures 2 to 6 As shown; when the cleaning rod 135 is located inside the fixed block 134, the opening at one end of the cleaning rod 135 close to the blocking ring 13, the connecting hole 137 and the opening outside the end of the cleaning rod 135 away from the connecting hole 137 are all located inside the fixed block 134; The end of the cleaning rod 135 close to the blocking ring 13 is conical.

[0024] The specific workflow is as follows: On the basis of the above embodiment, when the cleaning rod 135 is located inside the fixed block 134, the opening at one end of the cleaning rod 135 close to the blocking ring 13, the connecting hole 137 and the opening on the outside of the end of the cleaning rod 135 away from the connecting hole 137 are all located inside the fixed block 134, so that when the No. 1 pipe 121 and the No. 2 pipe 122 do not squeeze the annular plate 136, the end of the cleaning rod 135 with two openings and the connecting hole 137 is located inside the fixed block 134, so that no excess soil will enter the opening and the connecting hole 137 during the drilling process, and the end of the cleaning rod 135 close to the blocking ring 13 is conical, so that when the cleaning rod 135 cleans the water hole, the conical cleaning hole can more easily push out the soil inside the water hole, and the opening at the conical end of the cleaning rod 135 is dispersed when spraying mud, thereby improving the lubrication effect of the drill rod.

[0025] Embodiment 4:

[0026] like Figures 1 to 5As shown; the outer walls of the No. 1 pipe 121 and the No. 2 pipe 122 on the sliding pipe 12 are both provided with cutting blocks 14, and the cutting blocks 14 are spirally distributed; and the cutting blocks 14 on the No. 1 pipe 121 and the No. 2 pipe 122 are separated from each other; The outer wall of each blocking ring 13 is provided with an arc groove 138 , and the arc groove 138 is inclined. The arc groove 138 is not connected with the water spray port 131 and the water delivery port 132 .

[0027] The specific workflow is as follows: On the basis of the above embodiment, cutting blocks 14 are arranged on the outer walls of the No. 1 pipe 121 and the No. 2 pipe 122 on the slide rod. The cutting blocks 14 are spirally distributed, and the cutting blocks 14 on the No. 1 pipe 121 and the No. 2 pipe 122 are separated from each other, so that when the drill pipe body 1 rotates, the drill pipe body 1 drives the cutting blocks 14 on the No. 1 pipe 121 and the No. 2 pipe 122 to rotate synchronously, so that when the cutting blocks 14 rotate, the cutting blocks 14 cut the well wall, and an arc groove 138 is opened on the outer wall of the blocking ring 13, the arc groove 138 is inclined, and the arc groove 138 is not connected with the water spray port 131 and the water delivery port 132; When the drill bit arranged at the end of the drill pipe body 1 changes the drilling direction, the drilling well wall will bend. When the drill pipe body 1 moves to the well wall at the bend, the drill pipe body 1 will contact the well wall. At this time, the No. 1 pipe 121 and the No. 2 pipe 122 continue to move away from and approach each other, so that the No. 1 pipe 121 and the No. 2 pipe 122 on the drill pipe body 1 produce friction, so that the No. 1 pipe 121 and the No. 2 pipe 122 rub against the well wall at the bend. The cutting blocks 14 on the No. 1 pipe 121 and the No. 2 pipe 122 cut the well wall, so that the aperture of the well wall becomes larger, which can meet the passage of the drill pipe body 1, thereby avoiding the problem of drill jamming in the drill pipe body 1.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention; those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wired transmission drill rod for directional drilling in underground coal mines, the wired transmission drill rod comprising a drill rod body (1); the drill rod body (1) is a hollow tube, and a data transmission line, a connector, a central positioning device and a signal repeater are arranged inside the drill rod body (1); the outer walls of both ends of the drill rod body (1) are provided with drill rod nozzles; the characteristics are as follows: The drill rod body (1) further comprises: A strip-shaped sliding block (11), wherein the strip-shaped sliding block (11) is arranged on the outer wall of the middle part of the drill rod body (1); A sliding tube (12), wherein the sliding tube (12) is slidably connected to the outer wall of the drill pipe body (1), a sliding groove is provided on the inner wall of the sliding tube (12), and the strip sliding block (11) is slidably connected inside the sliding groove, and a spring is provided between the strip sliding block (11) and the sliding groove; Blocking rings (13), wherein the blocking rings (13) are fixedly arranged at both ends of the drill pipe body (1); The sliding pipe (12) is provided in two sections. The sliding pipe (12) is divided into a first pipe (121) and a second pipe (122). A telescopic device (123) is provided between the first pipe (121) and the second pipe (122); and a sliding rod is provided between the first pipe (121) and the second pipe (122).

2. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 1, characterized in that: The drill rod nozzle is arranged on the surface of the blocking ring (13), and is divided into a water spray port (131) and a water delivery port (132); the water spray port (131) is parallel to the drill rod body (1), the water delivery port (132) is perpendicular to the drill rod body (1), and one end of the water delivery port (132) is connected to the inside of the drill rod body (1), and the other end is connected to the middle of the water spray port (131).

3. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 2, characterized in that: A connecting plate (133) is provided at one end of the blocking ring (13) close to the middle of the drill rod body (1), and a fixing block (134) is provided at one end of the connecting plate (133) away from the drill rod body (1); a cleaning rod (135) is slidably connected inside the fixing block (134) via a spring, and the cleaning rod (135) corresponds to the water spray port (131); one end of the cleaning rod (135) away from the blocking ring (13) extends out of the fixing block (134), and an annular plate (136) is provided at one end of the plurality of cleaning rods (135) away from the fixing block (134).

4. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 3, characterized in that: The middle part of the cleaning rod (135) is hollow, and an opening is provided at one end of the cleaning rod (135) close to the blocking ring (13); a connecting hole (137) is provided at the lower end of the cleaning rod (135); an opening is provided at the outer side of one end of the cleaning rod (135) away from the connecting hole (137); and when the cleaning rod (135) enters the water spout (131), the connecting hole (137) is connected to the water delivery port (132).

5. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 3, characterized in that: When the cleaning rod (135) is located inside the fixed block (134), the opening at one end of the cleaning rod (135) close to the blocking ring (13), the connecting hole (137) and the opening outside the end of the cleaning rod (135) away from the connecting hole (137) are all located inside the fixed block (134).

6. A wired transmission drill rod for directional drilling in underground coal mines as claimed in claim 5, characterized in that; The end of the cleaning rod (135) close to the blocking ring (13) is conical.

7. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 1, characterized in that: The outer walls of the No. 1 pipe (121) and the No. 2 pipe (122) on the sliding pipe (12) are both provided with cutting blocks (14), and the cutting blocks (14) are spirally distributed; and the cutting blocks (14) on the No. 1 pipe (121) and the No. 2 pipe (122) are separated from each other.

8. The wired transmission drill rod for directional drilling in coal mines as claimed in claim 2, characterized in that: The outer wall of each blocking ring (13) is provided with an arc-shaped groove (138), and the arc-shaped groove (138) is arranged obliquely, and the arc-shaped groove (138) is not connected with the water spraying port (131) and the water delivery port (132).

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