CN116771280B - Guide drilling tool of ultra-long distance directional drilling machine and use method thereof - Google Patents
Guide drilling tool of ultra-long distance directional drilling machine and use method thereof Download PDFInfo
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- CN116771280B CN116771280B CN202311067334.6A CN202311067334A CN116771280B CN 116771280 B CN116771280 B CN 116771280B CN 202311067334 A CN202311067334 A CN 202311067334A CN 116771280 B CN116771280 B CN 116771280B
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- 238000005553 drilling Methods 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000007704 transition Effects 0.000 claims abstract description 70
- 239000002002 slurry Substances 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims abstract description 12
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000750 progressive effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 14
- 210000004907 gland Anatomy 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The application relates to the technical field of trenchless drilling guiding, in particular to a guiding drilling tool of an ultra-long distance directional drilling machine and a using method thereof, wherein the guiding drilling tool comprises an outer drilling rod with an outer rod cavity; the inner drill rod is coaxially arranged in the outer rod cavity, the outer drill rod and the inner drill rod are provided with rotating and pushing actions, and mud is communicated with the inner drill rod; the transition joint is provided with a limiting assembly between the transition joint and the soil inlet end of the outer drill rod so as to limit the transition joint to slide along the axis of the outer drill rod; one end of the transition joint is in rotary fit with the inner drill rod to realize slurry distribution, the inner drill rod rotates while the transition joint slides, the other end of the transition joint is mechanically fixed with a screw drilling tool, and an oblique angle is formed between the axis of the screw drilling tool and the axis of the inner drill rod; a guide assembly is also included. Compared with the traditional guiding drilling technology, the scheme eliminates the friction force generated during guiding drilling of the inner drill rod, adopts a progressive deflecting drilling mode to guide, can stably and smoothly guide the ultra-long-distance drilling, and improves the construction efficiency.
Description
Technical Field
The application relates to the technical field of directional drilling, in particular to a guide drilling tool of an ultra-long distance directional drilling machine and a use method thereof.
Background
Horizontal directional drilling is a typical non-excavation engineering construction technology, and can drill deep holes with a certain track underground on the premise of not greatly influencing the appearance of a ground surface building, so that the horizontal directional drilling is widely applied to the fields of underground pipeline or cable laying and the like.
The guiding drilling tool of the conventional directional drilling machine generally comprises a drill rod and a screw drilling tool arranged at the soil-entering end of the drill rod, wherein a certain inclination angle is formed between the screw drilling tool and the drill rod, the angle becomes a bevel angle, which is generally less than 2 degrees, and a power head is arranged on the horizontal directional drilling machine and is used for driving the drill rod to rotate and feed.
The drill rod is driven to rotate and feed under the condition of 1 and normal linear feeding, and the screw drilling tool rotates and feeds along with the drill rod so as to feed along a straight line; 2. under the condition that the direction needs to be changed, the direction required by feeding the drill bit is determined, the inclination direction of the screw drilling tool is adjusted, after the inclination direction of the screw drilling tool is confirmed, the power head drives the drill rod to feed only but not rotate, the drill rod moves along with the inclination direction of the screw drilling tool to change the direction, the power head drives the drill rod to rotate and feed when a hole with a certain depth is made, and then the linear feeding process is realized. According to the requirement, the operation is circulated for several times, and finally the drill bit is unearthed to finish the guiding.
However, the problem that the guiding drilling tool is troublesome is found in the actual construction process, namely, the guiding drilling tool is difficult to realize the ultra-long-distance drilling guiding construction process, and the guiding drilling tool is difficult to reach more than 2000 meters generally, because the friction resistance between the drill rod and the hole wall is continuously increased along with the continuous increase of the drilling distance, the rotation torque of the drill rod is continuously reduced in the transmission process, the cutting force generated by the rotation feeding of the drill rod is seriously insufficient, the continuous drilling is difficult, multiple attempts are possibly needed to drill, the efficiency is low, and the construction is difficult.
Disclosure of Invention
In order to solve the technical problems, the application provides the guide drilling tool of the ultra-long distance directional drilling machine and the use method thereof, which can stably and smoothly realize the function of guiding the ultra-long distance drilling, greatly reduce the construction difficulty of the ultra-long distance directional drilling and effectively improve the corresponding construction efficiency.
In order to achieve the above purpose, the technical scheme of the application is as follows:
in a first aspect, the present application provides an ultralong distance directional drilling machine guiding drilling tool, comprising:
the outer drill rod is provided with an outer rod cavity along the axial direction of the outer drill rod, and the outer drill rod has the actions of rotation and propulsion;
the inner drill rod is arranged in the outer rod cavity, the inner drill rod has the actions of rotation and pushing, and a mud channel is formed in the inner drill rod along the axial direction of the inner drill rod;
a transition joint, a limit component is arranged between the transition joint and the soil inlet end of the outer drill rod so as to limit the transition joint to slide along the axis of the outer drill rod and form an inclined angle with the axis of the outer drill rod;
one end of the transition joint is connected with the inner drill rod through a slurry-passing transfer case so as to realize slurry distribution, the inner drill rod rotates and the transition joint slides at the same time, a screw drilling tool is mechanically fixed at the other end of the transition joint, and a bevel angle is formed between the axis of the screw drilling tool and the axis of the inner drill rod;
the guide assembly comprises a guide probe for monitoring the posture of the screw drilling tool and transmitting the posture to the ground.
The technical scheme is realized, the outer drill rod rotates and feeds, the transition joint rotates along with the outer drill rod due to the limitation of the limiting assembly so as to drive the screw drilling tool to rotate, the inner drill rod and the outer drill rod are fed in a stepping mode, so that the transition joint and the screw drilling tool complete feeding actions, and at the moment, the screw drilling tool rotates and feeds simultaneously so as to form a linear duct, and thus, the linear drilling is completed; when the direction needs to be adjusted, the outer drill rod is completely static at the position needing to be changed, the inclined direction of the screw drilling tool is adjusted by utilizing the guide component, the inner drill rod rotates and feeds, the transition joint and the screw drilling tool linearly feed along the oblique angle forming direction due to the action of the slurry passing transfer case, so that inclined pore canals are drilled, the drill bit of the screw drilling tool is rotated to realize the rotary cutting of underground rock soil, when the guide length of the inclined pore canals reaches the requirement, the inner drill rod returns to the initial position, the outer drill rod is rotated, the slurry motor shell rotates together with the outer drill rod at the moment, and the slurry is linearly fed along the inclined pore canals, so that the linear feeding from one direction to the other direction is completed. The scheme has the obvious advantages that the propelling force during turning is mainly the inner drill rod, the inner drill rod is suspended in the cavity of the outer drill rod, due to the supporting and protecting effects of the outer drill rod, the rotation and propelling of the inner drill rod during ultra-long-distance turning cannot be affected by the friction force of an underground rock layer, on one hand, the part which is actually affected by the friction force is only the part of the length of the screw drilling tool and the transitional joint, the friction force which is affected by the screw drilling tool during turning is greatly reduced, on the other hand, the inner drill rod can be rotationally fed due to the fact that the outer wall of the inner drill rod is not affected by the friction force and the setting of the slurry transfer case, so that the stable conveying thrust can be achieved, the inclined pore drilling process of turning can be achieved very stably and efficiently, and the ultra-long-distance turning guiding process can be achieved very smoothly.
As one alternative embodiment of the scheme, the limiting assembly comprises a spline groove arranged on the outer wall of the transition joint and a guide spline arranged along the axis of the outer drill rod, wherein the guide spline is in sliding fit in the spline groove, and the guide spline is in clearance fit with the spline groove.
As one optional implementation scheme of the scheme, the outer wall of the transition joint is also provided with a blocking part in a protruding mode, and the blocking part is abutted with the soil inlet end of the outer drill rod.
According to the technical scheme, in the straight line drilling process, the inner drill rod can be pushed to drive the transition joint to linearly feed, and the soil inlet end of the outer drill rod is abutted to the limiting part and can also drive the transition joint to linearly feed by utilizing the self-propelling force of the outer drill rod, so that the propelling force of the transition joint and the screw drilling tool in the straight line propulsion is effectively improved, and the smoothness of ultra-long-distance drilling is further ensured.
As one optional implementation scheme of the scheme, the guide assembly further comprises a non-magnetic drill collar arranged between the transition joint and the screw drilling tool, two ends of the non-magnetic drill collar are fixedly connected with the transition joint and the screw drilling tool respectively, and the guide probe is arranged inside the non-magnetic drill collar.
As one of the alternative embodiments of the present solution, the non-magnetic drill collar includes:
the two ends of the shell are respectively assembled with the transition joint and the screw drilling tool in a threaded manner, and a cavity is arranged in the shell;
the slurry separating seats are provided with two slurry separating channels and are fixed in the cavity at intervals, and the slurry separating seats are provided with slurry separating channels along the axial direction of the shell;
the probe bin is fixed between the two pulp separating seats, and the two ends of the probe bin are sealed with the pulp separating seats.
The technical scheme is realized, a specific structure of the guide assembly is disclosed, and the corresponding specific structure of the non-magnetic drill collar is specially designed for distributing the slurry so that the slurry smoothly passes through the guide assembly and is led into the screw drilling tool.
As one of the alternative implementation schemes, a conducting groove is formed in the outer wall of the non-magnetic drill collar and communicated with the cavity, and a nylon inner shell is coaxially arranged on the inner wall of the non-magnetic drill collar.
According to the technical scheme, the conducting groove is used for guiding signals of the probe rod to be easily transmitted to the ground, and the nylon inner shell is used for guaranteeing that slurry flows in the cavity.
As one optional implementation scheme of the scheme, a conversion joint is further arranged between the inner drill rod and the sizing transfer case, one end of the conversion joint is in threaded fit with the inner drill rod, and the other end of the conversion joint is in threaded fit with the sizing transfer case.
As one of the optional embodiments of the present solution, the slurry transfer case includes:
the inner wall of the outer sleeve is coaxially and fixedly provided with a first deep groove ball bearing and a first thrust tapered roller bearing;
the first connecting shaft is matched with the first deep groove ball bearing and the first thrust tapered roller bearing so as to enable the first connecting shaft and the outer sleeve to rotate mutually, and a first channel is coaxially formed in the first connecting shaft and used for mud to pass through;
the second connecting shaft is fixed at one end of the outer sleeve, a hollow shaft is arranged at the end part of the first connecting shaft and is in rotary sealing fit with the first connecting shaft, and a second channel is coaxially formed in the second connecting shaft and used for mud to pass through.
On the other hand, the application also provides a using method of the guiding drilling tool, which is based on the guiding drilling tool of the ultra-long distance directional drilling machine and comprises the following operations:
a. the straight line drilling is carried out, the outer drill rod and the inner drill rod are operated to synchronously rotate and feed, the transition joint rotates along with the outer drill rod so as to drive the screw drilling tool to rotate, and the synchronous feeding of the inner drill rod drives the transition joint and the screw drilling tool to feed;
b. when the direction change is needed, the outer drill rod is static at the position needing the direction change, ground personnel adjust the inclination direction of the screw drilling tool by utilizing data transmitted by the guide component, and operate the inner drill rod to rotate and feed to drive the transition joint and the screw drilling tool to linearly feed along the direction of the oblique angle, so that an inclined duct is drilled; when the guiding length of the inclined duct reaches the requirement, the inner drill rod returns to the initial position, the outer drill rod is rotated, and the mud motor shell rotates together with the outer drill rod, and the mud is linearly fed along the inclined duct, so that the linear feeding from one direction to the other direction is completed.
As an alternative to this, in step b, after the guide length of the inclined bore has reached the desired value, the feed of the outer drill rod may be operated without the inner drill rod being operated back to the initial position until the guide spline is fully retracted into the spline groove, and then a linear feed is effected in accordance with step a.
Compared with the prior art, the technical scheme is realized, in the scheme, the outer drill rod is limited by the limiting component in the feeding process, so that the outer drill rod can enter the inclined hole after being inclined more accurately, and the guiding accuracy and smoothness are ensured.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the outer drill rod is arranged as an external support, the inner drill rod is arranged in the outer drill rod, the end part of the inner drill rod is connected with the transition joint through the slurry transfer case, the transition joint moves along a straight line under the limit of the limiting component, the inner drill rod is utilized to drive the transition joint to move when the inclined hole is formed by guiding, the inner drill rod cannot be subjected to external friction force, only the part of the transition joint and the outer wall of the screw drilling tool are subjected to friction force when the inclined hole is formed, and the inclined pressure is greatly reduced, so that the inclined hole is formed in a very efficient and smooth way, and the ultra-long-distance drilling guiding process can be effectively realized;
2. by arranging the slurry-passing transfer case with a special structure, the slurry-passing transfer case can better adapt to the working requirement of running fit and the slurry-passing requirement;
3. through the guide assembly of design special structure to realize mud and can place the direction probe and realize smooth information transmission when passing through.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a pilot drill of an ultra-long range directional drilling machine;
FIG. 2 is a schematic diagram primarily used to illustrate the steering of a pilot drill of an ultra-long range directional drilling machine;
FIG. 3 is a cross-sectional view showing primarily the guide assembly;
fig. 4 is a cross-sectional view mainly showing the construction of the through-slurry transfer case.
Reference numerals: 1. an outer drill rod; 11. an outer rod cavity; 2. an inner drill rod; 21. a slurry channel; 3. a transition joint; 4. a limit component; 41. spline grooves; 42. a guide spline; 5. slurry transfer case; 51. a jacket; 52. a first deep groove ball bearing; 53. a first thrust tapered roller bearing; 54. a first connecting shaft; 541. a first channel; 542. a first gland; 55. a second connecting shaft; 551. a second channel; 56. a hollow shaft; 561. a second gland; 57. a second deep groove ball bearing; 58. a second thrust tapered roller bearing; 6. screw drilling tool; 61. a mud motor; 62. roller cone drill bit; 7. a guide assembly; 71. a non-magnetic drill collar; 711. a housing; 7111. a cavity; 712. a slurry separating seat; 7121. a slurry separation channel; 713. a probe bin; 72. a guide probe; 8. a blocking part; 9. a conduction groove; 10. a nylon inner shell; 16. and a conversion joint.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
Example 1
Referring to fig. 1, an ultralong distance directional drilling machine guiding drilling tool disclosed by the embodiment of the application comprises an outer drilling rod 1, wherein an outer rod cavity 11 is formed in the outer drilling rod 1 along the axial direction of the outer drilling rod 1, one end of the outer drilling rod 1 is connected with a power head of the directional drilling machine in use so as to have actions of rotation and propulsion, a plurality of outer drilling rods 1 are in threaded fit connection in long distance drilling, and the other end of the outer drilling rod 1 far away from the directional drilling machine is a soil inlet end; the inner drill rod 2 is coaxially arranged in the outer rod cavity 11, the inner drill rod 2 is connected with the other power head of the directional drilling machine when in use so as to have independent rotation and pushing actions, a mud channel 21 is formed in the inner drill rod 2 along the axial direction of the inner drill rod 2 for mud to pass through, and a certain distance is reserved between the other end part of the inner drill rod 2 and the soil inlet end of the outer drill rod 1; the soil-entering end of the outer drill rod 1 is provided with a limiting component 4, the limiting component 4 is arranged between the transition joint 3 and the soil-entering end of the outer drill rod 1 to limit the transition joint 3 to slide along the axis of the outer drill rod 1, a certain inclined avoidance space is required to be provided for the transition joint 3 by the arrangement of the limiting component 4, so that the transition joint 3 can be slightly inclined at a certain angle when being pushed in, and explanation will be made later, the limiting component 4 comprises a plurality of spline grooves 41 formed in the outer wall of the transition joint 3 and guide splines 42 arranged on the inner wall of the outer drill rod 1 along the axis of the outer drill rod 1, the guide splines 42 are slidably matched in the spline grooves 41, the guide splines 42 are in clearance fit with the spline grooves 41, blocking parts 8 are further arranged on the outer wall of the transition joint 3 in a protruding mode, and the blocking parts 8 are in butt joint with the soil-entering end of the outer drill rod 1. A guide assembly 7 is further provided between the screw drilling tool 6 and the transition joint 3, the guide assembly 7 comprising a guide probe 72 for monitoring the drilling attitude of the screw drilling tool 6 and uploading to the ground.
Referring to fig. 1, an adapter 16 is screwed on one end portion of the inner drill rod 2 near the soil feeding end, a slurry passing transfer case 5 is mechanically and fixedly connected to the other end of the adapter 16, the other end of the slurry passing transfer case 5 is mechanically and fixedly connected to one end of a transition joint 3, in this embodiment, in threaded engagement, the slurry passing transfer case 5 is used for realizing slurry distribution, when the inner drill rod 2 rotates, the transition joint 3 does not rotate, but slides along the axis of the outer drill rod 1 under the limitation of a limiting component 4, the other end of the transition joint 3 is coaxially and mechanically fixed with a guiding component 7 for transmitting position information of underground drilling, and a screw drilling tool 6 is further fixed on the other end of the guiding component 7, in this embodiment, the screw drilling tool 6 is a conventional slurry motor 61 and a cutter 62, an inner ring of the slurry motor 61 is used for driving the cutter 62 to drill and cut underground rock, and an axis of a housing 711 of the slurry motor 61 is fixedly connected to an axis of the outer drill rod 1 at an angle, and the inclined angle is an oblique angle. The inclination angle of the transition joint 3 during movement is generally less than 2 degrees, and the transition joint is suitable for the bevel angle.
Based on the above structure, the straight drilling process is known as: the outer drill rod 1 rotates and feeds, because the guide spline 42 and the spline groove 41 limit, the transition joint 3 can be driven by the outer drill rod 1 to rotate so as to drive the screw drilling tool 6 to rotate, the screw drilling tool 6 drives the roller bit 62 to rotate under the action of the mud motor 61 to damage the underground rock layer, the axis of the screw drilling tool 6 moves around the axis of the outer drill rod 1 in a 360-degree circular manner so as to form linear drilling, at the moment, the inner drill rod 2 rotates and advances with the outer drill rod 1 to enable the transition joint 3 and the screw drilling tool 6 to complete feeding actions, meanwhile, the abutting of the soil inlet end of the outer drill rod 1 and the blocking part 8 also enables the transition joint 3 and the screw drilling tool 6 to be provided with drilling power, compared with the traditional technology, the linear drilling process is smoother, the screw drilling tool 6 rotates and feeds so as to form a linear duct, and the linear drilling is completed.
Referring to fig. 1 and 2, when the direction needs to be adjusted, the outer drill rod 1 is stationary at the position where the direction needs to be changed, the inclined direction of the screw drilling tool 6 is adjusted by the guide assembly 7, the inner drill rod 2 rotates and feeds, the transition joint 3 and the screw drilling tool 6 linearly feed along the inclined direction when the inner drill rod 2 rotates and advances due to the action of the slurry transfer case 5, the roller bit 62 rotates to cut the underground rock stratum so as to drill the inclined tunnel, the transition joint 3 can have a certain inclined angle so as to move along the inclined straight line, which is the reason that the spline groove 41 and the guide spline 42 need clearance fit in the above process, when the guide length of the inclined tunnel reaches the requirement, the inner drill rod 2 returns to the initial position, the outer drill rod 1 rotates, the screw drilling tool 6 rotates together with the outer drill rod 1 linearly feeds along the inclined tunnel, and the above process is repeated so that the direction is guided, thereby completing the linear feeding from one direction to the other direction.
The scheme has the obvious advantages that the propelling force during direction changing is mainly the inner drill rod 2, the inner drill rod 2 is suspended in the outer rod cavity 11, due to the supporting and protecting effects of the outer drill rod 1, the rotation and propelling of the inner drill rod 2 during ultra-long distance straight drilling or direction changing drilling cannot be influenced by the friction force of an underground rock layer, on one hand, the inner drill rod 2 can be rotated and fed during propelling due to the fact that the outer wall of the inner drill rod 2 is not influenced by the friction force and the setting of the slurry transfer case 5, so that the propelling force can be stably transmitted, the direction changing inclined duct drilling process can be stably and efficiently realized, the stable propelling force can be provided during straight feeding, the ultra-long distance direction changing guiding and the straight feeding process can be smoothly realized through combining with the propelling force of the outer drill rod 1, on the other hand, the part which is actually influenced by the friction force is only the part of the length of the screw drilling tool 6 and the transition joint 3, the friction force of the screw drilling tool 6 during forward advancing is greatly reduced, and the smoothness of ultra-long distance drilling is further ensured.
Referring to fig. 1 and 3, the guiding assembly 7 further includes a non-magnetic drill collar 71 disposed between the transition joint 3 and the screw drilling tool 6, two ends of the non-magnetic drill collar 71 are fixedly connected with the transition joint 3 and the screw drilling tool 6 respectively, the guiding probe 72 is disposed inside the non-magnetic drill collar 71, and the non-magnetic drill collar 71 includes: the two ends of the housing 711 are respectively assembled with the transition joint 3 and the screw drilling tool 6 in a threaded manner, and a cavity 7111 is arranged in the housing 711; the slurry separating seat 712, the slurry separating seat 712 is provided with two slurry separating channels 7121 which are fixed in the cavity 7111 at intervals by bolts, and the slurry separating seat 712 is provided with slurry separating channels 7121 along the axial direction of the housing 711; and the device also comprises a probe bin 713, wherein the probe bin 713 is fixed between two slurry separating seats 712, guide probes 72 are loaded in the probe bin 713, and the two ends of the probe bin 713 are sealed with the slurry separating seats 712 so that slurry smoothly passes through the guide assembly 7 and is led into the screw drilling tool 6. The outer wall of the non-magnetic drill collar 71 is communicated with the cavity 7111, a conducting groove 9 is formed in the outer wall of the non-magnetic drill collar 71, a nylon inner shell 10 is coaxially arranged on the inner wall of the non-magnetic drill collar 71, the conducting groove 9 is used for enabling signals guiding the probe 72 to be easily transmitted to the ground, and the nylon inner shell 10 is used for guaranteeing that slurry flows in the cavity 7111 in a space between the nylon inner shell 10 and the probe bin 713.
Referring to fig. 1 and 4, the slurry transfer case 5 includes an outer sleeve 51, and a first deep groove ball bearing 52 and a first thrust tapered roller bearing 53 are coaxially and fixedly arranged on the inner wall of the outer sleeve 51; the first connecting shaft 54 is matched with the first deep groove ball bearing 52 and the first thrust tapered roller bearing 53 so that the first connecting shaft 54 and the outer sleeve 51 rotate mutually, specifically, the outer wall of the first connecting shaft 54 is in interference fit with the first deep groove ball bearing 52, the end part of the first connecting shaft 54, which is positioned in the outer sleeve 51, is provided with a step to be abutted against the inner ring of the first thrust tapered roller bearing 53, the first connecting shaft 54 is coaxially provided with a first channel 541 for mud to pass through, one end, which is close to the first connecting shaft 54, of the outer sleeve 51 is connected with a first sealing gland 542 through bolts, the end part, which is positioned in the outer sleeve 51, of the first connecting shaft 54 is fixedly provided with a second sealing gland 561 through bolts, and the first sealing gland 542 and the second sealing gland 561 can realize rotary sealing; the second connecting shaft 55 is fixed at one end of the outer sleeve 51, specifically, the end part of the second connecting shaft 55 is in threaded fit in the outer sleeve 51, a hollow shaft 56 is screwed on the end part of the first connecting shaft 54, the hollow shaft 56 is in rotary sealing fit with the first connecting shaft 54, specifically, a second deep groove ball bearing 57 and a second thrust tapered roller bearing 58 are arranged at one end of the first connecting shaft 54 opposite to the second connecting shaft 55, the outer wall of the end part of the first connecting shaft 54 is in interference fit with the second deep groove ball bearing 57, the end part of the second connecting shaft 55 is in butt joint with the outer ring of the second thrust tapered roller bearing 58, and a second channel 551 is coaxially formed in the second connecting shaft 55 and used for mud to pass through.
When the inner drill rod 2 rotates and advances, the first connecting shaft 54, the hollow shaft 56 and the outer sleeve 51 are driven to integrally rotate around the axis of the second connecting shaft 55, and at the moment, the second connecting shaft 55 cannot rotate and can only be advanced and moved, so that the requirements of rotating and matching the first connecting shaft and the hollow shaft and smoothly passing mud are met.
Example 2
Referring to fig. 2, the application discloses an operation method based on the above guiding drilling tool, which specifically comprises the following steps:
a. the straight line drilling is carried out, the outer drill rod 1 and the inner drill rod 2 are operated to synchronously rotate and feed, the transition joint 3 rotates along with the outer drill rod 1 so as to drive the screw drilling tool 6 to rotate, and the synchronous feeding of the inner drill rod 2 drives the transition joint 3 and the screw drilling tool 6 to feed;
b. when the direction change is needed, the outer drill rod 1 is completely static at the position needing the direction change, ground personnel adjust the inclination direction of the screw drilling tool 6 by utilizing data transmitted by the guide component 7, and operate the inner drill rod 2 to rotate and feed to drive the transition joint 3 and the screw drilling tool 6 to linearly feed along the direction of the oblique angle, so that an inclined duct is drilled; when the guide length of the inclined port reaches the requirement, the inner drill rod 2 returns to the original position, and the outer drill rod 1 is rotated, and at this time, the housing 711 of the mud motor 61 rotates together with the outer drill rod 1 to linearly feed along the inclined port, thereby completing the linear feed from one direction to the other. In this step, when the guide length of the inclined port has reached the desired value, the feed of the outer drill rod 1 is operated without operating the inner drill rod 2 back to the initial position until the guide spline 42 is completely retracted into the spline groove 41, and then the linear feed is performed according to step a.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. An ultra-long range directional drilling machine steering drill, comprising:
the outer drill rod (1), the outer drill rod (1) is provided with an outer rod cavity (11) along the axial direction of the outer drill rod (1), and the outer drill rod (1) has the actions of rotation and pushing;
the inner drill rod (2) is arranged in the outer rod cavity (11), the inner drill rod (2) has the actions of rotation and pushing, and the inner drill rod (2) is provided with a mud channel (21) along the axial direction of the inner drill rod;
the transition joint (3) is provided with a limiting assembly (4) between the transition joint (3) and the soil inlet end of the outer drill rod (1) so as to limit the transition joint (3) to slide along the axis of the outer drill rod (1) and form an inclined angle with the axis of the outer drill rod (1);
one end of the transition joint (3) is connected with the inner drill rod (2) through a slurry transfer case (5) so as to realize slurry distribution, the inner drill rod (2) rotates and the transition joint (3) slides at the same time, a screw drilling tool (6) is mechanically fixed at the other end of the transition joint (3), and a bevel angle is formed between the axis of the screw drilling tool (6) and the axis of the inner drill rod (2);
the guide assembly (7), the guide assembly (7) comprises a guide probe (72) for monitoring the posture of the screw drilling tool (6) and transmitting to the ground.
2. The very long range directional drilling machine guide drilling tool of claim 1, wherein: the limiting assembly (4) comprises a spline groove (41) arranged on the outer wall of the transition joint (3) and a guide spline (42) arranged along the axis of the outer drill rod (1), the guide spline (42) is in sliding fit in the spline groove (41), and the guide spline (42) is in clearance fit with the spline groove (41).
3. The very long range directional drilling machine guide drilling tool of claim 1, wherein: the outer wall of the transition joint (3) is also provided with a blocking part (8) in a protruding mode, and the blocking part (8) is abutted with the soil inlet end of the outer drill rod (1).
4. The very long range directional drilling machine guide drilling tool of claim 1, wherein: the guide assembly (7) further comprises a non-magnetic drill collar (71) arranged between the transition joint (3) and the screw drilling tool (6), two ends of the non-magnetic drill collar (71) are fixedly connected with the transition joint (3) and the screw drilling tool (6) respectively, and the guide probe (72) is arranged inside the non-magnetic drill collar (71).
5. The very long range directional drilling machine guiding drill of claim 4, wherein: the non-magnetic drill collar (71) includes:
the two ends of the shell (711) are respectively in threaded assembly with the transition joint (3) and the screw drilling tool (6), and a cavity (7111) is arranged in the shell (711);
the slurry separating seats (712), wherein the slurry separating seats (712) are provided with two slurry separating channels (7121) which are fixed in the cavity (7111) at intervals, and the slurry separating seats (712) are axially provided with slurry separating channels (7121) along the shell (711);
the probe bin (713), the probe bin (713) is fixed between two thick liquid separating seats (712), and seal between both ends of the probe bin (713) and the thick liquid separating seats (712).
6. The very long range directional drilling machine pilot drill of claim 5, wherein: a conducting groove (9) is formed in the outer wall of the non-magnetic drill collar (71) and communicated with the cavity (7111), and a nylon inner shell (10) is coaxially arranged on the inner wall of the non-magnetic drill collar (71).
7. The very long range directional drilling machine guide drilling tool of claim 1, wherein: and an adapter (16) is further arranged between the inner drill rod (2) and the slurry transfer case (5), one end of the adapter (16) is in threaded fit with the inner drill rod (2), and the other end of the adapter (16) is in threaded fit with the slurry transfer case (5).
8. The very long range directional drilling machine pilot drill of claim 7, wherein: the slurry transfer case (5) comprises:
the inner wall of the outer sleeve (51) is coaxially and fixedly provided with a first deep groove ball bearing (52) and a first thrust tapered roller bearing (53);
the first connecting shaft (54) is fixedly connected with the transition joint (3), the first connecting shaft (54) is matched with the first deep groove ball bearing (52) and the first thrust tapered roller bearing (53) so that the first connecting shaft (54) and the outer sleeve (51) rotate mutually, and a first channel (541) is coaxially formed in the first connecting shaft (54) and used for mud to pass through;
the second connecting shaft (55) is fixedly connected with the adapter (16), the second connecting shaft (55) is fixed at one end of the outer sleeve (51), a hollow shaft (56) is arranged at the end part of the first connecting shaft (54), the hollow shaft (56) is in rotary sealing fit with the first connecting shaft (54), and a second channel (551) is coaxially formed in the second connecting shaft (55) and used for mud to pass through.
9. A method of using a pilot drill, based on the ultralong range directional drilling machine pilot drill of any one of claims 1-8, characterized by the following operations:
a. the method comprises the steps of linearly drilling, operating an outer drill rod (1) and an inner drill rod (2) to synchronously rotate and feed, and driving a screw drilling tool (6) to rotate by a transition joint (3) along with the rotation of the outer drill rod (1), wherein the synchronous feeding of the inner drill rod (2) drives the transition joint (3) and the screw drilling tool (6) to feed;
b. when the direction change is needed, the outer drill rod (1) is stationary at the position needing the direction change, ground personnel adjust the inclination direction of the screw drilling tool (6) by utilizing data transmitted by the guide component (7), and the inner drill rod (2) is operated to rotate and feed to drive the transition joint (3) and the screw drilling tool (6) to linearly feed along the direction of the oblique angle, so that an inclined duct is drilled; when the guiding length of the inclined duct reaches the requirement, the inner drill rod (2) returns to the initial position, the outer drill rod (1) is rotated, and at the moment, the casing (711) of the mud motor (61) rotates together with the outer drill rod (1) and is linearly fed along the inclined duct, so that the linear feeding from one direction to the other direction is completed.
10. The method of using a steering drill according to claim 9, wherein: in step b, when the guiding length of the inclined duct reaches the requirement, the inner drill rod (2) is not required to return to the initial position, but the outer drill rod (1) is required to feed until the guiding spline (42) is completely retracted into the spline groove (41), and then the linear feeding is realized according to step a.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311067334.6A CN116771280B (en) | 2023-08-23 | 2023-08-23 | Guide drilling tool of ultra-long distance directional drilling machine and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311067334.6A CN116771280B (en) | 2023-08-23 | 2023-08-23 | Guide drilling tool of ultra-long distance directional drilling machine and use method thereof |
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| CN116771280A CN116771280A (en) | 2023-09-19 |
| CN116771280B true CN116771280B (en) | 2023-10-31 |
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Citations (6)
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|---|---|---|---|---|
| GB842190A (en) * | 1957-12-18 | 1960-07-20 | Ici Ltd | Improvements in drilling boreholes |
| CN1314968A (en) * | 1998-06-08 | 2001-09-26 | 查尔斯·T·韦布 | Directional drilling system and apparatus |
| CN2515419Y (en) * | 2001-09-17 | 2002-10-09 | 石油勘探开发科学研究院钻井工艺研究所 | Guiding and binding type small size screw composite driller |
| CN201943580U (en) * | 2011-01-25 | 2011-08-24 | 陈林 | Mechanical guide drilling jig |
| CN203271589U (en) * | 2013-06-05 | 2013-11-06 | 北京六合伟业科技股份有限公司 | Controlled directional drilling guide system |
| CN218816237U (en) * | 2022-09-15 | 2023-04-07 | 中国石油化工股份有限公司 | Mud power lateral force generating device |
-
2023
- 2023-08-23 CN CN202311067334.6A patent/CN116771280B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB842190A (en) * | 1957-12-18 | 1960-07-20 | Ici Ltd | Improvements in drilling boreholes |
| CN1314968A (en) * | 1998-06-08 | 2001-09-26 | 查尔斯·T·韦布 | Directional drilling system and apparatus |
| CN2515419Y (en) * | 2001-09-17 | 2002-10-09 | 石油勘探开发科学研究院钻井工艺研究所 | Guiding and binding type small size screw composite driller |
| CN201943580U (en) * | 2011-01-25 | 2011-08-24 | 陈林 | Mechanical guide drilling jig |
| CN203271589U (en) * | 2013-06-05 | 2013-11-06 | 北京六合伟业科技股份有限公司 | Controlled directional drilling guide system |
| CN218816237U (en) * | 2022-09-15 | 2023-04-07 | 中国石油化工股份有限公司 | Mud power lateral force generating device |
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| Publication number | Publication date |
|---|---|
| CN116771280A (en) | 2023-09-19 |
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