CN217712475U

CN217712475U - Pole rescue device is embraced in directional brill of level

Info

Publication number: CN217712475U
Application number: CN202221446866.1U
Authority: CN
Inventors: 靳克杰; 许长生; 周俊杰; 姜世宇; 黄浩辉; 陈树熹
Original assignee: Xindi Energy Engineering Technology Co Ltd
Current assignee: Xindi Energy Engineering Technology Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-01
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses a pole rescue device is embraced to directional brill of level, it is including being used for squeezing into the pole rescue drill bit of soil layer, and pole rescue drill bit is connected with the connecting rod, and the connecting rod is fitted with a contraceptive ring and is overlapped and have the rotation axis, and the side of rotation axis is fixed with the slip fixer that is used for emboliaing the drilling rod of being locked. The utility model discloses a directional pole rescue device that embraces of level handles special soil layer drilling rod locking's the condition specially, solves to be used the brute force by the locking drilling rod to pull and lead to cracked condition.

Description

Pole rescue device is embraced in directional brill of level

Technical Field

The utility model belongs to horizontal directional drilling construction field, concretely relates to pole rescue device is embraced to horizontal directional drilling.

Background

Trenchless directional drilling and pipe laying has been widely used in underground pipeline construction projects. Directional drilling crosses in the work progress drilling rod and squeezes into the soil layer, if meet special soil property such as clay and under the longer condition of length, the drilling rod stops to creep into the back, and soil receives the action of gravity, can produce hoop pressure to the drilling rod, produces very big frictional resistance promptly, leads to the drilling rod to be unable to pull, commonly known as "drilling rod locking" phenomenon promptly.

If a strong-torque large drilling machine is used for forcibly dragging, the drill rod can be broken, scrapping is caused, and unnecessary construction loss is generated.

Therefore, there is an urgent need in the art for a horizontal directional drilling derrick rescue device that can rescue a locked drill pipe from the earth.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a horizontal directional drilling holds pole rescue device handles special soil layer drilling rod locking's the condition specially, solves to be used the brute force by locking the drilling rod and pulls the condition that leads to the fracture.

The utility model discloses a pole rescue device is embraced to directional brill of level, it is including the pole rescue drill bit of embracing that is used for squeezing into the soil layer, and pole rescue drill bit is connected with the connecting rod, and the connecting rod is fitted with a contraceptive ring and is overlapped and have the rotation axis, and the side of rotation axis is fixed with the slip fixer that is used for emboliaing by the locking drilling rod.

Further, the holding pole rescue bit is fixedly connected with the connecting rod, for example, by welding, and is a bit known to those skilled in the art.

Further, one end of the connecting rod, which is far away from the holding rod rescue drill bit, is connected with the rescue drill rod in a threaded manner (preferably an internal thread), the length of the connecting rod can be 50-300cm, further 50-200cm, and preferably about 100-150cm, and the outer diameter of the connecting rod is consistent with the outer diameter of the rescue drill rod.

Further, the outer diameter of the rescue drill rod is consistent with that of the locked drill rod.

Further, the rotating shaft is a sleeve (the length may be, for example, 0.4 to 0.8m, and preferably 0.5 to 0.6 m) sleeved outside the connecting rod, the connecting rod is connected with the rotating shaft through a rotating bearing, the connecting rod is fixedly connected with an inner ring of the rotating bearing, the rotating shaft is fixedly connected with an outer ring of the rotating bearing, and lubricating oil is preferably coated in the rotating bearing.

Further, the sliding holder may be, for example, a sleeve (with a length of, for example, 0.8-1.5m, preferably 1-1.2 m) or a collar that slides along the locked drill rod, and the sliding holder is sleeved on the locked drill rod for positioning, and the inner diameter of the sliding holder is slightly larger than the inner diameter of the locked drill rod, for example, 1-3mm, preferably 2mm.

Furthermore, the central axis of the sliding fixer is parallel to the central axis of the rotating shaft, the sliding fixer is fixedly connected (for example, welded) with the rotating shaft through a connecting plate, the material of the connecting plate can be any one of 20# steel and Q235B, so that the connecting position of the sliding fixer and the rotating shaft is ensured to be firm and reliable, and the condition of stress fracture cannot occur; the distance between the sliding holder and the axis of rotation may be, for example, 10-20cm, preferably 12-15cm.

Construction scene: the drill rod (such as the drill rod of D83) with the length of 300 meters passes through a special sand layer in the drilling process, the drill rod is locked (namely, the drill rod is locked) due to the collapse of the rotary hole, the drill rod cannot be dragged, if the drill rod is forcibly dragged, the drill rod can be broken, and most of the drill rod is lost. Use the utility model discloses a horizontal directional drilling pole rescue device carries out the process of rescuing:

1. and sleeving a sliding fixer of the holding rod rescue drill bit on the ground leakage part of the locked drill rod.

2. Starting a 'rescue drill rod' (for example, a drill rod of D83) to be in threaded connection with a connecting rod of the holding pole rescue drill bit, operating a drilling machine to rotate the 'rescue drill rod' and checking whether the sliding fixer and the rotating shaft rotate flexibly.

3. And operating the drilling machine to push the rescue drill rod and the locking rescue drill bit into the soil layer along the locked drill rod.

4. The mud is injected through the rescue drill rod (the flow rate of the mud is not lower than 565L/min), and is sprayed out through a hole at the top end of the holding rod rescue drill bit, the surrounding soil layer of the locked drill rod is lubricated, the drilling process is carried out slowly, and a mud lubricating layer is formed on the surrounding soil layer of the locked drill rod.

5. When the derrick rescue drill bit is unearthed, the drilling is stopped, the derrick rescue drill bit is dragged back, the derrick rescue drill bit returns according to the original path, and the slurry is injected during the dragging back, which is equivalent to secondary lubrication of surrounding soil layers.

6. After all the holding rod rescue drill bits are successfully dragged back, the drilling machine is switched to the locked drill rod, rotary jacking or back dragging operation is carried out, and finally the drill rod is rescued.

The utility model is suitable for an all by locking drilling rod model, all drilling rod models promptly.

The utility model has the advantages that:

the utility model discloses a directional pole rescue device that embraces of level utilizes "rescue drilling rod" will "embrace pole rescue drill bit" to squeeze into the soil layer, and the mode through water injection or mud makes "by locking drilling rod" and soil horizon on every side reforms the clearance again, reduces frictional resistance, reaches the purpose of rescuing "by locking drilling rod". The utility model provides a by the locking drilling rod by the powerful condition that leads to the fracture of pulling, carried out maximum protection to the drilling rod, avoided the fixed asset loss of company.

Drawings

Fig. 1 is a schematic structural view of the pole rescue device with a horizontal directional drill according to the present invention.

Fig. 2 is a using state diagram of the horizontal directional drilling derrick rescue device of the utility model.

Reference numerals are as follows:

the method comprises the following steps of 1-holding a rod rescue drill bit, 2-connecting rods, 3-rotating shafts, 4-locked drill rods, 5-sliding fixtures, 6-rescue drill rods and 7-connecting plates.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses a directional pole rescue device of boring of level, it is including being used for squeezing into pole rescue drill bit 1 of soil layer, and pole rescue drill bit 1 is connected with connecting rod 2, and the fit sleeve has rotation axis 3 on connecting rod 2, and the side of rotation axis 3 is fixed with and is used for emboliaing the slip fixer 5 of being locked drilling rod 4.

The holding pole rescue drill bit 1 is fixedly connected with the connecting rod 2, for example, the holding pole rescue drill bit 1 can be welded, and a drill bit known to those skilled in the art can be used.

The end of the connecting rod 2 far away from the holding pole rescue drill bit 1 is connected with the rescue drill rod 6 in a threaded (preferably internal thread) mode, the length of the connecting rod 2 can be 50-300cm, further 50-200cm and 100-150cm, and the outer diameter of the connecting rod 2 is preferably consistent with the outer diameter of the rescue drill rod 6.

The rescue drill rod 6 preferably has an outer diameter corresponding to the outer diameter of the locked drill rod 4.

In one embodiment, the rotating shaft 3 is a sleeve (with a length of 0.4-0.8m, preferably 0.5-0.6 m) sleeved outside the connecting rod 2, the connecting rod 2 is connected with the rotating shaft 3 through a rotating bearing, the connecting rod 2 is fixedly connected with an inner ring of the rotating bearing, the rotating shaft 3 is fixedly connected with an outer ring of the rotating bearing, the rotating bearing is preferably coated with lubricating oil, and the rotating bearing is a rotating shaft well known to those skilled in the art.

The sliding holder 5 may be, for example, a sleeve (which may have a length of, for example, 0.8-1.5m, further, for example, 0.9-1.3m, and preferably about 1.0-1.2 m) or a collar that slides along the locked drill rod 4, and is sleeved into the locked drill rod 4 for positioning, and the inner diameter of the sliding holder 5 is slightly larger than the inner diameter of the locked drill rod 4, for example, 1-3mm, and preferably about 2mm.

The central axis of the sliding fixer 5 is parallel to the central axis of the rotating shaft 3, the sliding fixer 5 is fixedly connected (for example, welded) with the rotating shaft 3 through a connecting plate 7, the material of the connecting plate can be any one of 20# steel and Q235B, the connecting position of the sliding fixer and the rotating shaft is guaranteed to be firm and reliable, and the situation of stress fracture cannot occur; the distance between the sliding holder and the axis of rotation may be, for example, 8-30cm, further for example 10-20cm, preferably about 12-15cm.

Examples

Construction scene: the drill rod (such as the drill rod of the D83) with the length of 300 meters passes through a special sand layer in the drilling process, the drill rod is locked (namely, the drill rod 4 is locked) due to the collapse of the rotary hole, the drill rod cannot be dragged, and if the drill rod is forcibly dragged, the drill rod can be broken, and most of the drill rod is lost. Use the utility model discloses a horizontal directional drilling pole rescue device carries out the process of rescuing:

1. the sliding fixer 5 of the holding rod rescue drill bit 1 is sleeved on the ground leakage part of the locked drill rod 4.

2. Starting the 'rescue drill rod 6' (for example, a drill rod of D83) to be in threaded connection with the connecting rod 2 of the holding pole rescue drill bit 1, operating the drilling machine to rotate the 'rescue drill rod 6' and checking whether the sliding fixer 5 and the rotating shaft 3 rotate flexibly.

3. And operating the drilling machine to push the rescue drill rod 6 and the holding rod rescue drill bit 1 into the soil layer along the locked drill rod 4.

4. The mud is injected through the rescue drill rod 6 (the flow rate of the mud is not lower than 565L/min), and is sprayed out through a hole at the top end of the holding rod rescue drill bit 1, so that the surrounding soil layer of the locked drill rod 4 is lubricated, the drilling process is carried out slowly, and the surrounding soil layer of the locked drill rod 4 is ensured to form a mud lubricating layer.

5. When the holding pole rescue drill bit 1 comes out of the earth, the drilling is stopped, the back dragging is carried out according to the original way, and the injection of the slurry is also carried out during the back dragging, which is equivalent to the secondary lubrication of the surrounding soil layer.

6. After all the holding pole rescue drill bits 1 are successfully dragged back, the drilling machine is switched to a locked drill rod to carry out rotary jacking or back dragging operation, and finally the drill rod is rescued.

The cost calculation was performed with the above example:

if the locked drill rods are dragged forcibly to rescue 90 meters, the rest 210 meters are broken in the soil layer, each locked drill rod is 800 yuan (3 meters of locked drill rods), one drill bit is 4000 yuan, one probe rod is 30000 yuan, and 90000 yuan is lost.

Use the utility model discloses a horizontal directional drilling embracing pole rescue device rescues, squeezes into the rescue drilling rod again to back drag former by the locking drilling rod, cost of labor 3000, mechanical cost 5000 yuan, 8000 yuan altogether. The 90000-yuan loss is recovered. The longer the locked drill rod is, the larger the caliber of the drill rod is, and the larger the recovery loss is.

The foregoing describes preferred embodiments of the present invention, however, the foregoing description is not intended to be limiting. Many changes and modifications may be made by one of ordinary skill in the art without departing from the spirit and scope of the invention. Such changes or modifications are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a directional pole rescue device of driling in level which characterized in that, it is including being used for squeezing into pole rescue drill bit (1) of soil layer, and pole rescue drill bit (1) is connected with connecting rod (2), and connecting rod (2) are fitted with a contraceptive ring and are overlapped and have rotation axis (3), and the side of rotation axis (3) is fixed with and is used for emboliaing slip fixer (5) of being locked drilling rod (4).

2. The pole rescue apparatus of claim 1, wherein the pole rescue drill bit (1) is fixedly connected to the connecting rod (2).

3. The rescue device with the holding pole capable of being directionally drilled horizontally as claimed in claim 1 or 2, wherein one end, far away from the holding pole rescue drill bit (1), of the connecting rod (2) is in threaded connection with the rescue drill rod (6), and the outer diameter of the connecting rod (2) is consistent with that of the rescue drill rod (6).

4. The rescue apparatus according to claim 3, characterized in that the rescue drill rod (6) has an outer diameter identical to that of the locked drill rod (4).

5. The rescue apparatus according to claim 1 or 2, wherein the rotary shaft (3) is a sleeve sleeved outside the connecting rod (2), the connecting rod (2) is connected with the rotary shaft (3) through a rotary bearing, the connecting rod (2) is fixedly connected with an inner ring of the rotary bearing, the rotary shaft (3) is fixedly connected with an outer ring of the rotary bearing, and lubricating oil is coated in the rotary bearing.

6. The rescue apparatus with a horizontally directional drill pole according to claim 4, characterized in that the rotating shaft (3) is a sleeve sleeved outside the connecting rod (2), the connecting rod (2) is connected with the rotating shaft (3) through a rotating bearing, the connecting rod (2) is fixedly connected with an inner ring of the rotating bearing, the rotating shaft (3) is fixedly connected with an outer ring of the rotating bearing, and lubricating oil is coated in the rotating bearing.

7. The horizontal directional drilling derrick rescue device according to claim 1 or 2, characterized in that the sliding holder (5) is a sleeve or a collar that slides along the locked drill rod (4), and the inner diameter of the sliding holder (5) is slightly larger than the inner diameter of the locked drill rod (4).

8. The rescue apparatus according to claim 6, wherein the sliding holder (5) is a sleeve or a collar sliding along the locked drill rod (4), and the inner diameter of the sliding holder (5) is slightly larger than the inner diameter of the locked drill rod (4).

9. The rescue apparatus with a horizontally directional drilling derrick as claimed in claim 1 or 8, characterized in that the central axis of the sliding fixer (5) is parallel to the central axis of the rotating shaft (3), and the sliding fixer (5) is fixedly connected with the rotating shaft (3) through the connecting plate (7).