CN108412424B - Tool for preventing drill rod from rebounding in directional drilling and dragging construction and application method thereof - Google Patents
Tool for preventing drill rod from rebounding in directional drilling and dragging construction and application method thereof Download PDFInfo
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- CN108412424B CN108412424B CN201810295491.5A CN201810295491A CN108412424B CN 108412424 B CN108412424 B CN 108412424B CN 201810295491 A CN201810295491 A CN 201810295491A CN 108412424 B CN108412424 B CN 108412424B
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- 238000005553 drilling Methods 0.000 title claims abstract description 70
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 238000004873 anchoring Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a tool for preventing a drill rod from rebounding in directional drilling and dragging construction and a use method thereof, wherein the tool comprises an anchoring mechanism and a check mechanism, the anchoring mechanism comprises a steel cylinder concrete pile, a first lifting lug is fixedly arranged on the outer wall of the steel cylinder concrete pile, the check mechanism comprises a sleeve and a check block, the sleeve is sleeved on the drill rod to be operated, a second lifting lug is fixedly arranged on the outer wall of the sleeve, and the check block is positioned between the sleeve and the drill rod to be operated so as to limit the drill rod to be operated, and the first lifting lug and the second lifting lug are connected through a steel wire rope. The construction procedures of installing and dismantling the short drill rod are saved, the time for pulling back one drill rod is shortened, compared with the traditional process, the time is shortened by 1/2, the long-time stay of the pipeline in the hole and the repeated push-pull of the drill rod by the drilling machine are avoided, the resilience force of pulling back the pipeline is reduced, the disturbance of the inner wall of the hole is reduced, the risks of pipe clamping and pipe holding are reduced, and the success rate of pulling back the pipeline is improved.
Description
Technical field:
the invention relates to the technical field of directional drilling and dragging construction, in particular to a tool for preventing a drill rod from rebounding in directional drilling and dragging construction and a use method thereof.
The background technology is as follows:
in the prior art, in the process of carrying out directional drilling pipeline back-dragging construction, a drilling machine back-dragging drill rod is dragged to the maximum position of a drilling machine travelling mechanism, but because the pipeline back-dragging bears huge pulling force, when the drilling machine stops outputting the pulling force, huge resilience force exists in the pipeline in the hole, and if a vice device shackle is adopted at the moment, the pipeline resilience force can easily stretch the vice device.
In the back-dragging pipeline construction, when each drill rod is dragged back, a slightly short drill rod is usually connected to the front end of the drill rod at the foremost section, the length of a normal drill rod is generally 9.6m, the length of the slightly short drill rod is determined according to actual needs, the length of the slightly short drill rod is generally 3-6m, then the short drill rod is pulled to the maximum position of a drilling machine running mechanism through a drilling machine power head, and then the drill rod is pushed downwards, at the moment, the pulling force value of a drilling machine instrument panel is continuously reduced, when the pulling force value is reduced to zero, the drilling machine pushing force is slightly increased, the pipeline elastic force is completely removed, the pushing of the drill rod is stopped, a normal drill rod joint is positioned between an upper vice and a lower vice or above the upper vice, the drill rod joint is removed, the back-dragging construction of the drill rod is completed, the installation and the disassembly of the short drill rod are required to be completed in the process of the back-dragging construction of the drill rod, the wearing of the drilling machine power head, the vice and other devices are correspondingly prolonged, the service life of the drilling machine power head is prolonged, and the cost is increased. And when the directional drilling pipeline is in back-dragging construction, the longer the pipeline stays in the mud hole, the larger the back-dragging force of the drilling machine, the more times the drilling machine pushes and pulls the drill rod, the larger the disturbance on the inner wall of the mud hole, the higher the risk of the collapse of the mud hole, the larger the probability of pipe clamping and pipe holding, the higher the construction difficulty and the lower the back-dragging success rate.
Therefore, it is necessary to provide a tool for preventing the rebound of the drill rod in the directional drilling and pulling construction and a use method thereof, so as to solve the above problems.
The invention comprises the following steps:
the invention aims to provide a tool for preventing a drill rod from rebounding in directional drilling and dragging construction, which saves construction procedures of mounting and dismounting a short drill rod and shortens the time for dragging back one drill rod, and a use method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a tool for preventing a drill rod from rebounding in directional drilling and back-dragging construction, which comprises an anchoring mechanism and a check mechanism, wherein the anchoring mechanism comprises a steel cylinder concrete pile, a first lifting lug is fixedly arranged on the outer wall of the steel cylinder concrete pile, the check mechanism comprises a sleeve and a check block, the sleeve is sleeved on a drill rod to be operated, a second lifting lug is fixedly arranged on the outer wall of the sleeve, and the check block is positioned between the sleeve and the drill rod to be operated so as to limit the drill rod to be operated, and the first lifting lug and the second lifting lug are connected through a steel wire rope.
The baffle comprises a baffle and an arc plate, the arc plate is inserted between the sleeve and the drill rod to be operated, the baffle is vertically arranged on the end face of the sleeve, and the end part of the baffle extends towards the outside of the sleeve.
The stop blocks are two or more than two, are circumferentially distributed along the inner wall of the sleeve, and are arranged in an annular shape in a surrounding mode.
When the number of the stop blocks is two, the two stop blocks are enclosed to form a cylindrical structure, and the cylindrical structure is enclosed on the inner wall of the sleeve.
The baffle is also provided with a steel bar, the steel bar extends towards the outside of the sleeve, and the baffle is held for installing or detaching the baffle block.
The steel cylinder concrete pile comprises a steel cylinder, and concrete is poured in the steel cylinder.
The steel wire rope is connected with the first lifting lug and the second lifting lug through U-shaped rings.
The first lifting lug and the second lifting lug are welded on the steel cylinder concrete pile and the sleeve respectively.
The sleeve is made of seamless steel pipes.
The application method of the tool for preventing the rebound of the drill rod in the directional drilling back-dragging construction comprises the following specific steps:
step one: before the directional drilling machine is installed, an anchoring mechanism is manufactured, namely the steel cylinder is buried 2-4m below the ground, concrete is poured into the steel cylinder, and a steel cylinder concrete pile structure is formed;
step two: before passing through the main pipeline for back dragging, sleeving the sleeve on the drill rods, wherein the drill rods are sequentially connected into a whole through joints, and the steel wire rope is connected with the steel cylinder concrete pile and the sleeve through a U-shaped ring;
step three: when a drill rod passes through a main pipeline to carry out back drawing, a directional drilling machine is started, a first drill rod to be operated is drawn back to the maximum position of a directional drilling machine travelling mechanism, at the moment, a second joint between a second drill rod to be operated and a third drill rod exceeds the upper edge of a sleeve by 30-40cm, a first joint between the first drill rod to be operated and the second drill rod is arranged between an upper vice and a lower vice or at the front end of the upper vice, a stop block is rapidly inserted into a gap between the sleeve and the drill rod, free sliding of the directional drilling machine travelling mechanism is limited under the action of a hydraulic lock on the directional drilling machine travelling mechanism, and the directional drilling machine is started to push the drill rod downwards;
step four: when the end part bulge of the third drill rod to be operated is contacted with the stop block, the stop block is used for clamping the end part bulge part of the third drill rod, the resilience force of the drill rod is slowly reduced to zero, and when the display screen of the operating platform of the directional drilling machine shows that the pushing force is increased, the directional drilling machine is stopped, the steel wire rope between the steel cylinder concrete pile and the sleeve is tensioned due to the stress, and the resilience force of the pipeline is completely removed;
step five: and stopping the movement of the drill rods, moving the upper and lower vices, removing the first joint between the first drill rod to be operated and the second drill rod, completing the back-dragging construction of the first drill rod, and repeating the steps to complete the back-dragging construction of the rest drill rods.
The tool for preventing the rebound of the drill rod in the directional drilling and dragging construction and the use method thereof have the beneficial effects that: compared with the traditional construction process, the tool for preventing the rebound of the drill rod saves the construction process of installing and detaching the short drill rod, shortens the time for pulling back one drill rod, shortens the time by 1/2 compared with the traditional process, avoids the long-time stay of a pipeline in a hole and the repeated push-pull of the drill rod by a drilling machine, reduces the rebound force of the pipeline pulled back, reduces the disturbance of the inner wall of the hole, reduces the risk of pipe clamping and pipe holding, and improves the success rate of pipeline pulling back; meanwhile, compared with the traditional construction process, the pipeline rebound prevention tool reduces the construction procedures of mounting and dismounting the short drill rod and reduces the abrasion of devices such as a drilling machine power head, a vice and the like; and the forefront end of the drill rod is not required to be connected with a short drill rod, the drill rod is lifted upwards through the drilling machine, at the moment, the tool for preventing the drill rod from rebounding plays a role of the tool, when the second and third drill rod joints pulled from top to bottom exceed the upper edge of the check mechanism by 30 cm to 40cm, a worker rapidly lifts the sleeve, the check block is inserted into a gap between the sleeve and the drill rod, meanwhile, the drilling machine pushes the drill rod downwards, after the protruding part of the head of the third drill rod is contacted with the check block, the rebound force of the drill rod is slowly reduced to zero, when the display screen of the operation table of the directional drilling machine displays that the thrust is increased, the wire rope is tensioned due to stress, the rebound force of the pipeline is completely removed, the drill rod is stopped from being pushed, and according to the design of the tool for preventing the drill rod from rebounding, at the moment, the first and the second drill rod joints are positioned between the upper vice and the lower vice or above the upper vice, the upper vice and the lower vice is removed, and the joint is removed, and the back pulling construction of the drill rod is completed.
Description of the drawings:
FIG. 1 is a schematic structural view of a tool for preventing a drill rod from rebounding in directional drilling back-pulling construction;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged partial schematic view at B in FIG. 2;
FIG. 4 is a schematic structural view of a sleeve;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a schematic view of a block structure;
FIG. 7 is a schematic cross-sectional view of A-A of FIG. 6;
fig. 8 is a schematic structural view of the first lifting lug or the second lifting lug;
FIG. 9 is a schematic structural view of a tooling construction state for preventing rebound of a drill rod in directional drilling back-pulling construction;
FIG. 10 is a top view of FIG. 9;
in the figure: the concrete pile comprises a 1-steel cylinder concrete pile, a 2-steel cylinder, 3-concrete, a 4-first lifting lug, a 5-sleeve, a 6-second lifting lug, a 7-stop block, an 8-baffle, a 9-arc plate, 10-steel bars, an 11-U-shaped ring, a 12-steel wire rope, a 13-drilling machine, a 14-drilling machine chassis, a 15-first drill rod, a 16-second drill rod, a 17-third drill rod, an 18-upper vice, a 19-lower vice, a 20-first connector, a 21-second connector and a 22-stiffening ring.
The specific embodiment is as follows:
the following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
According to the tool for preventing the drill rod from rebounding in the directional drilling and dragging construction, disclosed by the invention, as shown in fig. 1-8, the tool comprises an anchoring mechanism and a blocking mechanism, wherein the anchoring mechanism comprises a steel cylinder concrete pile 1, the steel cylinder concrete pile 1 comprises a steel cylinder 2, concrete 3 is poured inside the steel cylinder 2, a first lifting lug 4 is fixedly arranged on the outer wall of the steel cylinder concrete pile 1, the blocking mechanism comprises a sleeve 5 and a stop 7, the sleeve 5 is made of a seamless steel pipe, a stiffening ring 22 is further arranged on the outer wall of the sleeve, the sleeve 5 is sleeved on a drill rod to be operated, the sleeve 5 and the drill rod to be operated are concentrically arranged, a second lifting lug 6 is fixedly arranged on the outer wall of the sleeve 5, in the embodiment, the first lifting lug 4 and the second lifting lug 6 are welded on the steel cylinder concrete pile 1 and the sleeve 5 respectively, the stop 7 is positioned between the sleeve 5 and the drill rod to be operated so as to limit the drill rod to be operated, the first lifting lug 4 and the second lifting lug 6 are connected through a wire rope 12, and the first lifting lug 4 and the second lifting lug are connected with the first lifting lug 11 through the U-shaped ring 11 and the second lifting lug.
Further, the dog 7 includes baffle 8 and arc board 9, arc board 9 inserts and locates between sleeve 5 and the drilling rod of waiting to operate, baffle 8 set up perpendicularly in sleeve 5 terminal surface, and its tip orientation sleeve 5 outside extends, the radian of arc board 9 with the radian of sleeve 5 inner wall is unanimous, dog 7 is two or more, and it is followed sleeve 5 inner wall circumference distributes, encloses to set up to be the annular, and in this embodiment, dog 7 is two, two dog 7 encloses to close, forms cylindrical structure, cylindrical structure encloses to locate sleeve 5 inner wall.
Further, the baffle 8 is further provided with a reinforcing steel bar 10, the reinforcing steel bar 10 extends towards the outside of the sleeve 5, and the baffle 7 is installed or detached by holding the reinforcing steel bar 10, so that the operator is prevented from easily clamping fingers when installing or detaching the baffle 7.
According to the application method of the tool for preventing the rebound of the drill rod in the directional drilling back-dragging construction shown in fig. 9 to 10, the specific steps are as follows:
step one: before the directional drilling machine is installed, an anchoring mechanism is manufactured, namely, the steel cylinder 2 is buried 2-4m below the ground, concrete 3 is poured in the steel cylinder 2, a steel cylinder concrete pile structure is formed, and the steel cylinder concrete pile structure is used as a fixed point of the whole tool to bear the tensile force of the steel wire rope 12;
step two: before the main pipe is traversed for back dragging, the sleeve 5 is sleeved on the drill pipes, the drill pipes are sequentially connected into a whole through joints, in the embodiment, three drill pipes are taken as an example for detailed description, namely a first drill pipe 15, a second drill pipe 16 and a third drill pipe 17, the first drill pipe 15 and the second drill pipe 16 are connected through a first joint 20, the second drill pipe 16 and the third drill pipe 17 are connected through a second joint 21, and the steel wire rope 12 is connected with the steel cylinder concrete pile 1 and the sleeve 5 through a U-shaped ring 11;
step three: when the drill rod passes through the main pipeline to carry out back drawing, the directional drilling machine is started, the first drill rod 15 to be operated is drawn back to the maximum position of the directional drilling machine travelling mechanism, at the moment, the second joint 21 between the second drill rod 16 to be operated and the third drill rod 17 exceeds the upper edge of the sleeve 5 by 30-40cm, the first joint 20 between the first drill rod 15 to be operated and the second drill rod 16 is arranged between the upper vice 18 and the lower vice 19 or at the front end of the upper vice 18, the stop block 7 is quickly inserted into a gap between the sleeve 5 and the drill rod, the free sliding of the directional drilling machine travelling mechanism is limited under the action of a hydraulic lock on the directional drilling machine travelling mechanism, and the directional drilling machine is started to push the drill rod downwards;
step four: when the end part bulge of the third drill rod 17 to be operated is contacted with the stop block 7, the stop block 7 clamps the end part bulge part of the third drill rod 17, the resilience force of the drill rod is slowly reduced to zero, and when the display screen of the operation table of the directional drilling machine shows that the pushing force is increased, the directional drilling machine is stopped, the steel wire rope 12 between the steel cylinder concrete pile 1 and the sleeve 8 is tensioned due to the stress, and the resilience force of the pipeline is completely removed;
step five: the drill rod stops moving, the upper vice and the lower vice are moved, the first joint 20 between the first drill rod 15 to be operated and the second drill rod 16 is removed, the back-dragging construction of the first drill rod 15 is completed, the steps are repeated, and the back-dragging construction of the rest drill rods is completed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which are intended to be covered by the scope of the claims.
Claims (10)
1. Tool for preventing drill rod from rebounding in directional drilling back-dragging construction, and is characterized in that: the device comprises an anchoring mechanism and a grid blocking mechanism, wherein the anchoring mechanism comprises a steel cylinder concrete pile, a first lifting lug is fixedly arranged on the outer wall of the steel cylinder concrete pile, the grid blocking mechanism comprises a sleeve and a stop block, the sleeve is sleeved on a drill rod to be operated, and a second lifting lug is fixedly arranged on the outer wall of the sleeve; the stop block is positioned between the sleeve and the drill rod to be operated, and when a second joint between a second drill rod to be operated and a third drill rod exceeds the upper edge of the sleeve by 30-40cm, or a first joint between a first drill rod to be operated and the second drill rod is positioned between an upper vice and a lower vice, or the front end of the upper vice, the stop block is rapidly inserted into a gap between the sleeve and the drill rod so as to limit the drill rod to be operated; the first lifting lug and the second lifting lug are connected through a steel wire rope; when the end bulge of the third drill rod to be operated is contacted with the stop block, the stop block is used for clamping the end bulge part of the third drill rod, and the rebound force of the pipeline is completely removed.
2. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 1, wherein the tooling is characterized in that: the baffle comprises a baffle and an arc plate, the arc plate is inserted between the sleeve and the drill rod to be operated, the baffle is vertically arranged on the end face of the sleeve, and the end part of the baffle extends towards the outside of the sleeve.
3. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 2, wherein the tooling is characterized in that: the stop blocks are two or more than two, are circumferentially distributed along the inner wall of the sleeve, and are arranged in an annular shape in a surrounding mode.
4. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 3, wherein the tooling is characterized in that: when the number of the stop blocks is two, the two stop blocks are enclosed to form a cylindrical structure, and the cylindrical structure is enclosed on the inner wall of the sleeve.
5. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 2, wherein the tooling is characterized in that: the baffle is also provided with a steel bar, the steel bar extends towards the outside of the sleeve, and the baffle is held for installing or detaching the baffle block.
6. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 1, wherein the tooling is characterized in that: the steel cylinder concrete pile comprises a steel cylinder, and concrete is poured in the steel cylinder.
7. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 1, wherein the tooling is characterized in that: the steel wire rope is connected with the first lifting lug and the second lifting lug through U-shaped rings.
8. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 1, wherein the tooling is characterized in that: and the lifting lugs are respectively welded on the steel cylinder concrete pile and the sleeve.
9. The tooling for preventing rebound of a drill rod in directional drilling and back-dragging construction according to claim 1, wherein the tooling is characterized in that: the sleeve is made of seamless steel pipes.
10. The method for using the tool for preventing the rebound of the drill rod in the directional drilling and back-dragging construction according to claim 1, which is characterized by comprising the following specific steps:
step one: before the directional drilling machine is installed, an anchoring mechanism is manufactured, namely the steel cylinder is buried 2-4m below the ground, concrete is poured into the steel cylinder, and a steel cylinder concrete pile structure is formed;
step two: before passing through the main pipeline for back dragging, sleeving the sleeve on the drill rods, wherein the drill rods are sequentially connected into a whole through joints, and the steel wire rope is connected with the steel cylinder concrete pile and the sleeve through a U-shaped ring;
step three: when a drill rod passes through a main pipeline to carry out back drawing, a directional drilling machine is started, a first drill rod to be operated is drawn back to the maximum position of a directional drilling machine travelling mechanism, at the moment, a second joint between a second drill rod to be operated and a third drill rod exceeds the upper edge of a sleeve by 30-40cm, a first joint between the first drill rod to be operated and the second drill rod is arranged between an upper vice and a lower vice or at the front end of the upper vice, a stop block is rapidly inserted into a gap between the sleeve and the drill rod, free sliding of the directional drilling machine travelling mechanism is limited under the action of a hydraulic lock on the directional drilling machine travelling mechanism, and the directional drilling machine is started to push the drill rod downwards;
step four: when the end part bulge of the third drill rod to be operated is contacted with the stop block, the stop block is used for clamping the end part bulge part of the third drill rod, the resilience force of the drill rod is slowly reduced to zero, and when the display screen of the operating platform of the directional drilling machine shows that the pushing force is increased, the directional drilling machine is stopped, the steel wire rope between the steel cylinder concrete pile and the sleeve is tensioned due to the stress, and the resilience force of the pipeline is completely removed;
step five: and stopping the movement of the drill rods, moving the upper and lower vices, removing the first joint between the first drill rod to be operated and the second drill rod, completing the back-dragging construction of the first drill rod, and repeating the steps to complete the back-dragging construction of the rest drill rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295491.5A CN108412424B (en) | 2018-03-30 | 2018-03-30 | Tool for preventing drill rod from rebounding in directional drilling and dragging construction and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295491.5A CN108412424B (en) | 2018-03-30 | 2018-03-30 | Tool for preventing drill rod from rebounding in directional drilling and dragging construction and application method thereof |
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| CN108412424A CN108412424A (en) | 2018-08-17 |
| CN108412424B true CN108412424B (en) | 2023-09-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979567A (en) * | 2018-09-04 | 2018-12-11 | 江苏如东联丰石油机械有限公司 | A kind of Directional Drilling operation on the sea clamping drilling rod safety device |
| CN109465599B (en) * | 2018-10-10 | 2023-01-06 | 中国二冶集团有限公司 | Manufacturing and using method of mop head |
| CN113482530B (en) * | 2021-08-20 | 2022-10-14 | 北京城建亚泰建设集团有限公司 | Site-limited long-distance large-aperture horizontal directional drilling pipeline back-dragging construction process |
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