CN107780842B - Drilling tool - Google Patents
Drilling tool Download PDFInfo
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- CN107780842B CN107780842B CN201610743696.6A CN201610743696A CN107780842B CN 107780842 B CN107780842 B CN 107780842B CN 201610743696 A CN201610743696 A CN 201610743696A CN 107780842 B CN107780842 B CN 107780842B
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- piston rod
- piston
- head section
- output shaft
- drilling tool
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- 238000005553 drilling Methods 0.000 title claims abstract description 74
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 29
- 238000013016 damping Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B11/00—Other drilling tools
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 invention discloses a drilling tool, and belongs to the field of drilling and production. The drilling tool comprises: the device comprises an upper joint, a shell, a first piston rod and an output shaft; the upper joint is connected with the shell, the first piston is fixed in the shell, and a first through hole is formed in the first piston; a first step is arranged between the head section of the first piston rod and the tail section of the first piston rod, the tail section of the first piston rod penetrates through the first through hole to be connected with one end of the output shaft, and the other end of the output shaft is connected with the drill bit; the end face of the head section of the first piston rod can drive the output shaft to move under the action of pressure of slurry flowing in from the upper joint until the first step of the first piston rod is contacted with the first piston. The invention provides the drilling tool comprising the first piston rod, the first piston and the output shaft, so that the thrust force applied to the drill bit is ensured, and the drilling speed and the drilling operation efficiency are ensured.
Description
Technical Field
The invention relates to the field of drilling and production, in particular to a drilling tool.
Background
In the field of oil and gas drilling and production, drilling tools are mainly applied to drilling operations such as drilling and the like. Wherein, the drilling tool can be connected with drilling rod, drill bit etc. and the drilling rod can transmit the thrust that the rig produced for the drilling tool drives the drill bit under the effect of this thrust and carries out rectilinear motion, and simultaneously, the drill bit can produce the moment of torsion under the effect of motor, consequently, the drill bit can carry out rectilinear motion on the one hand when creeping into the operation, and on the other hand carries out rotary motion.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
in long distance drilling operation, because the drilling distance is long, the thrust generated by the drilling machine is probably offset by the friction force between the drill rod and the hole wall of the drilled hole, so that the transmission efficiency of the thrust through the drill rod is reduced, the drilling speed is low, and the drilling operation efficiency is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a drilling tool. The drilling tool comprises: the device comprises an upper joint, a shell, a first piston rod and an output shaft;
the upper joint is connected with the shell, the first piston is fixed in the shell, and a first through hole is formed in the first piston;
a first step is arranged between the head section of the first piston rod and the tail section of the first piston rod, the tail section of the first piston rod penetrates through the first through hole to be connected with one end of the output shaft, and the other end of the output shaft is connected with a drill bit;
the first piston rod can drive the output shaft to move when the end face of the head section is under the pressure action of slurry flowing in from the upper joint until the first step of the first piston rod is contacted with the first piston.
In a first embodiment, the drilling tool further comprises a first sealing ring and a first retaining ring;
the first sealing ring is in contact with the outer wall of the head section of the first piston rod and the inner wall of the shell, and the first retainer ring is located on the outer side of the head section of the first piston rod and in contact with the first sealing ring.
In a second embodiment, the drilling tool further comprises a first damping disc spring;
the first buffer disc spring is positioned on the outer side of the head section of the first piston rod.
In a third embodiment, the housing is provided with a first vent hole;
the first air outlet through hole is used for discharging air in a cavity formed by the first piston, the tail section of the first piston rod, the first step and the shell when the first piston rod moves.
In a fourth embodiment, the output shaft is splined to the housing.
In a fifth embodiment, the drill further comprises a second piston, a second piston rod, and a third piston rod;
the second piston is fixed inside the shell, a second through hole is formed in the second piston, a second step is arranged between the head section of the second piston rod and the tail section of the second piston rod, the end face of the head section of the second piston rod is in contact with the end face of the tail section of the first piston rod, the tail section of the second piston rod penetrates through the second through hole, the end face of the tail section of the second piston rod is in contact with the end face of the head section of the third piston rod, and the third piston rod is connected with one end of the output shaft;
the second piston rod can drive the third piston rod and the output shaft to move under the action of the pressure of the first piston rod until the second step is contacted with the second piston.
In a sixth embodiment, a first mud groove is arranged on the head section end surface of the second piston rod;
the first mud groove is used for enabling mud flowing from the upper joint to the inside of the first piston rod to flow out of the second piston rod through the first mud groove;
the second piston rod can drive the third piston rod and the output shaft to move when the head section end face of the second piston rod is under the pressure action of mud flowing out of the first mud groove until the second step is contacted with the second piston.
In a seventh embodiment, a second mud groove is arranged on the head section end surface of the third piston rod;
the second mud groove is used for enabling mud flowing from the upper joint to the inside of the first piston rod and the inside of the second piston rod to flow out of the third piston rod through the second mud groove;
the third piston rod can drive the output shaft to move when the head section end face of the third piston rod is under the pressure of the slurry flowing out of the second slurry groove.
In an eighth embodiment, a second air outlet through hole is formed in the shell;
and the second air outlet through hole is used for discharging air in a cavity formed by the second piston, the tail section of the second piston rod, the second step and the shell when the second piston rod moves.
In a ninth embodiment, the drilling tool further comprises a second sealing ring, a second retainer ring, a third sealing ring, and a third retainer ring;
the second sealing ring is in contact with the outer wall of the head section of the second piston rod and the inner wall of the shell, and the third sealing ring is in contact with the outer wall of the head section of the third piston rod and the inner wall of the shell;
the second retainer ring is located on the outer side of the head section of the second piston rod and is in contact with the second sealing ring, and the third retainer ring is located on the outer side of the head section of the third piston rod and is in contact with the third sealing ring.
In a tenth embodiment, the drilling tool further comprises a second damping disc spring and a third damping disc spring;
the second buffer disc spring is located on the outer side of the head section of the second piston rod, and the third buffer disc spring is located on the outer side of the head section of the third piston rod.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
through providing the drilling tool that contains first piston rod, first piston and output shaft for first piston rod can drive the output shaft motion under the effect of mud pressure, thereby for the drill bit with output shaft connection provides thrust, makes in long distance creeps into the operation, except that the rig provides thrust for the drill bit, the output shaft also can provide thrust for the drill bit, has guaranteed the thrust that the drill bit received, thereby has guaranteed drilling speed and has crept into the operating efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a head section of a drilling tool 10 according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the tail section of the drilling tool 10 according to the embodiment of the present invention.
Fig. 3 is a combined schematic view of a drilling tool and other equipment provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The present invention provides a drilling tool 10, as shown in fig. 1 and 2, the drilling tool 10 including: upper joint 11, housing 12, first piston 13, first piston rod 14 and output shaft 15.
The upper joint 11 is connected to the housing 12, the first piston 13 is fixed inside the housing 12, and the first piston 13 has a first through hole. A first step is arranged between the head section 141 of the first piston rod 14 and the tail section 142 of the first piston rod 14, the tail section 142 of the first piston rod 14 passes through the first through hole to be connected with one end of the output shaft 15, and the other end of the output shaft 15 is connected with a drill bit. The first piston rod 14 can drive the output shaft 15 to move when the end face of the head section 141 is subjected to the pressure of the slurry flowing in from the upper joint 11 until the first step of the first piston rod 14 contacts with the first piston 13.
It should be noted that the upper joint 11 and the housing 12 are connected by screw threads, specifically, the upper joint 11 may be provided with internal screw threads, the housing 12 may be provided with external screw threads, and the upper joint 11 and the housing 12 may be connected by the above internal screw threads and external screw threads. In one embodiment of the present invention, the housing 12 may be divided into two parts, a first housing 121 and a second housing 122, respectively, and the first housing 121 and the second housing 122 may be connected by a screw. In this case, the upper joint 11 and the first housing 121 are connected by screw. It should also be noted that the first piston 13 may be fixed to the inside of the housing 12 by a pin, as shown in fig. 1.
In practical applications, the tail section 142 of the first piston rod 14 may be directly connected to one end of the output shaft 15, or may be connected to one end of the output shaft 15 through other components in the drilling tool 10, which is not limited in this respect. As shown in fig. 3, the other end of the output shaft 15 generally needs to be connected to the drill bit 200 through the motor 100, wherein the motor 100 can provide torque for the drill bit to enable the drill bit 200 to make rotational motion while making linear motion, in one embodiment of the present invention, the output shaft 15 also needs to be connected to the drill bit 200 through the drill collar 300, the drill collar 300 can reduce vibration and swing of the drill bit 200 to ensure that the drill bit 200 is stable, meanwhile, the upper joint 11 of the drilling tool 10 can be connected to one end of a drill rod 400, the other end of the drill rod 400 is connected to the drilling machine, and the drill rod 400 can transmit thrust generated by the drilling machine to the drill bit 200.
In practical application, the upper joint 11 of the drilling tool 10 may be connected to a drill rod 400, the drill rod 400 has a hollow structure, mud may flow into the upper joint 11 through the drill rod 400, and an end surface of the head section 141 of the first piston rod 14 close to the upper joint 11 is subjected to pressure of the mud, so that a pressure difference is formed between the end surface of the head section 141 and the first step, and under the pressure difference, the first piston rod 14 may drive the output shaft 15 to move toward a mud flow direction (e.g., an x-axis direction shown in fig. 1 and 2) until the first step contacts the first piston 13. As shown in fig. 1 and 2, the first piston rod 14 and the output shaft 15 are both hollow, and mud can flow out of the drilling tool 10 through the first piston rod 14 and the output shaft 15 and flow into the motor 100, so that the motor 100 can be operated by the mud.
In conclusion, the drilling tool that this embodiment provided is through setting up first piston rod, first piston and output shaft for first piston rod can drive the output shaft motion under the effect of mud pressure, thereby for the drill bit with output shaft connection provides thrust, makes in long distance drilling operation, except that the rig provides thrust for the drill bit, the output shaft also can provide thrust for the drill bit, has guaranteed the thrust that the drill bit received, thereby has guaranteed drilling speed and drilling operation efficiency.
Further, the drilling tool 10 further comprises a first sealing ring 16 and a first collar 17. The first sealing ring 16 is in contact with the outer wall of the head section 141 of the first piston rod 14 and the inner wall of the housing 12, and the first retainer 17 is located outside the head section 141 of the first piston rod 14 and in contact with the first sealing ring 16.
In practical applications, in order to ensure that a pressure difference is formed between the end surface of the head section 141 and the first step, it is necessary to prevent mud from flowing from the gap between the first piston rod 14 and the housing 12 to the cavity a formed by the first piston 13, the tail section 142 of the first piston rod, the first step and the housing 12. To this end, the present invention may be provided with a first sealing ring 16, the first sealing ring 16 being located between the head section 141 of the first piston rod 14 and the housing 12 for preventing mud from flowing from the gap between the first piston rod 14 and the housing 12 into the cavity a. Furthermore, in order to fix the first sealing ring 16 against displacement during movement of the first piston rod 14, the invention may also be provided with a first collar 17, which first collar 17 is located outside the head section 141 of the first piston rod 14 and is in contact with the first sealing ring 16.
Further, the drilling tool 10 further comprises a first damping disc spring 18, and the first damping disc spring 18 is located outside the head section 141 of the first piston rod 14.
In practice, the pressure difference between the end face of the head section 141 and the first step is relatively large under the action of the slurry pressure, and in one embodiment of the present invention, the pressure difference may be up to 5 tons, so that the first step may collide with the first piston 13 violently under the action of the slurry pressure. In order to prevent the first piston rod 14 and the first piston 13 from being damaged by the collision when the first step is contacted with the first piston 13, the invention can also be provided with a first buffer disc spring 18, and the first buffer disc spring 18 can play a role in buffering and damping, so that the first piston rod 14 and the first piston 13 can be protected.
Further, a first air outlet hole 123 is disposed on the housing 12, and the first air outlet hole 123 is used for discharging air in the cavity a formed by the first piston 13, the tail section 142 of the first piston rod 14, the first step and the housing 12 when the first piston rod 14 moves.
As shown in fig. 1, during the movement of the first piston rod 14, the volume of the cavity a will gradually decrease, and the gas in the cavity a will also be compressed. In order to prevent the pressure difference formed between the end surface of the head section 141 and the first step from being reduced due to the high pressure of the compressed air, and thus the thrust applied to the drill 200 from being reduced, the present invention may further include a first air outlet hole 123 for discharging the air in the cavity a.
Alternatively, the output shaft 15 is splined to the housing 12.
As shown in fig. 2, the housing 12 is provided with splines, the output shaft 15 is also provided with splines, the splines on the housing 12 are engaged with the splines on the output shaft 15, and the housing 12 and the output shaft 15 are connected by the splines. As mentioned above, the output shaft 15 is generally connected to the drill bit 200 through the motor 100, and the motor 100 provides torque to the drill bit 200 and also provides torque to the output shaft 15, so that the output shaft 15 needs to be splined to the housing 12 so that the output shaft 15 can rotate relative to the housing 12.
Further, the drill 10 further comprises a second piston 19, a second piston rod 20 and a third piston rod 21. The second piston 19 is fixed inside the housing 12, a second through hole is provided in the second piston 19, a second step is provided between the head section 201 of the second piston rod 20 and the tail section 202 of the second piston rod 20, the end surface of the head section 201 of the second piston rod 20 contacts with the end surface of the tail section 202 of the first piston rod 20, the tail section 202 of the second piston rod 20 passes through the second through hole, the end surface of the tail section 202 of the second piston rod 20 contacts with the end surface of the head section of the third piston rod 21, and the third piston rod 21 is connected with one end of the output shaft 15. The second piston rod 20 can drive the third piston rod 21 and the output shaft 15 to move under the action of the pressure of the first piston rod 14 until the second step contacts the second piston 19.
As mentioned above, the tail section 142 of the first piston rod 14 may be directly connected to one end of the output shaft 15, or may be connected to one end of the output shaft 15 through other components in the drilling tool 10, and in one embodiment of the present invention, the tail section 142 of the first piston rod 14 may be connected to the output shaft 15 through the second piston rod 20 and the third piston rod 21.
As shown in fig. 2, the second piston 19 is connected to the housing 12 in the same manner as the first piston 13, the second piston rod 20 has the same structure as the first piston rod 14, the positional relationship between the second piston rod 20 and the second piston is the same as the positional relationship between the first piston rod 14 and the first piston 13, and the third piston rod 21, the second piston rod 20, and the first piston rod 14 are not provided with a step. As shown in fig. 1 and 2, the second piston rod 20 and the third piston rod 21 are hollow, and mud can flow from the inside of the second piston rod 20 and the third piston rod 21 to the inside of the output shaft 15.
Optionally, a first mud groove is provided on the end surface of the head section 201 of the second piston rod 20, and the first mud groove is used for allowing mud flowing from the upper joint 11 to the inside of the first piston rod 104 to flow out of the second piston rod 20, wherein the second piston rod 20 can drive the third piston rod 21 and the output shaft 15 to move when the end surface of the head section 201 of the second piston rod 20 is subjected to the pressure of the mud flowing out of the first mud groove until the second step is in contact with the second piston 19.
In order to further increase the thrust force for pushing the output shaft 15, the present invention may further include a first mud groove disposed on the end surface of the head section 201 of the second piston rod 20, so that mud flows out of the second piston rod 20 through the first mud groove to apply pressure to the end surface of the head section 201 of the second piston rod 20, so that a pressure difference is formed between the end surface of the head section 201 and the second step, and the second piston rod 20 drives the third piston rod 21 and the output shaft 15 to move under the action of the pressure difference.
Optionally, a second mud groove is provided on the end surface of the head section of the third piston rod 21, and the second mud groove is used for allowing mud flowing from the upper joint 11 to the inside of the first piston rod 14 and the inside of the second piston rod 20 to flow out of the third piston rod 21, wherein the third piston rod 21 can drive the output shaft 15 to move when the end surface of the head section of the third piston rod 21 is under the pressure of the mud flowing out of the second mud groove.
The second slurry groove may be formed on the end surface of the head section of the third piston rod 21, for the same reason and manner as the first slurry groove.
Optionally, a second air outlet hole 124 is provided on the housing 12, and the second air outlet hole 124 is used for exhausting air in the cavity B formed by the second piston 19, the tail section 202 of the second piston rod 20, the second step and the housing 12 when the second piston rod 20 moves.
The second vent hole 124 may be formed on the housing 12 for the same reason and manner as the first vent hole 123.
Further, the drilling tool 10 also comprises a second sealing ring 22, a second stop ring 23, a third sealing ring 24 and a third stop ring 25. The second sealing ring 22 is in contact with the outer wall of the head section 201 of the second piston rod 20 and the inner wall of the housing 12, and the third sealing ring 24 is in contact with the outer wall of the head section of the third piston rod 21 and the inner wall of the housing 12. The second retainer ring 23 is located outside the head section 201 of the second piston rod 20 and contacts with the second seal ring 22, and the third retainer ring 25 is located outside the head section of the third piston rod 21 and contacts with the third seal ring 24.
The present invention may further include a second seal ring 22, a second retainer ring 23, a third seal ring 24, and a third retainer ring 25, for the same reason and manner as the first seal ring 16 and the first retainer ring 17 are provided.
Further, the drilling tool 10 further comprises a second buffer disc spring 26 and a third buffer disc spring 27. The second buffer disc spring 26 is located outside the head section 201 of the second piston rod 20, and the third buffer disc spring 27 is located outside the head section of the third piston rod 21.
The second damping disc spring 26 and the third damping disc spring 27 may be provided in the present invention for the same reason and manner as the first damping disc spring 18 is provided.
The drilling tool 10 provided by the present invention can be used for drilling operation, and the present invention will be briefly described with reference to the drilling tool 10 shown in fig. 1 and 2, and specifically, the method of using the drilling tool 10 provided by the present invention may be:
the upper joint 11 of the drilling tool 10 is connected to a drill rod 400, the drill rod 400 is connected to a drilling machine, the output shaft 15 of the drilling tool 10 is connected to the motor 100, and the motor 100 is connected to the drill bit 200 through the drill collar 300. During a drilling operation, a technician starts the drilling machine, the thrust generated by the drilling machine is transmitted to the drill bit 200 through the drill rod 400, and simultaneously slurry is added into the drill rod 400, so that the first piston rod 14, the second piston rod 20, the third piston rod 21 and the output shaft 15 in the drilling tool 10 move in the slurry flowing direction to provide additional thrust for the drill bit 200. Additionally, mud flows through the drill 10 into the motor 100, which powers the motor 100 to provide torque to the drill bit 200.
In conclusion, the drilling tool that this embodiment provided is through setting up first piston rod, first piston and output shaft for first piston rod can drive the output shaft motion under the effect of mud pressure, thereby for the drill bit with output shaft connection provides thrust, makes in long distance drilling operation, except that the rig provides thrust for the drill bit, the output shaft also can provide thrust for the drill bit, has guaranteed the thrust that the drill bit received, thereby has guaranteed drilling speed and drilling operation efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A drilling tool, characterized in that the drilling tool comprises: the device comprises an upper joint, a shell, a first piston rod and an output shaft;
the upper joint is connected with the shell, the first piston is fixed in the shell, and a first through hole is formed in the first piston; a first step is arranged between the head section of the first piston rod and the tail section of the first piston rod;
the drilling tool further comprises a second piston, a second piston rod and a third piston rod; the second piston is fixed inside the shell, a second through hole is formed in the second piston, a second step is arranged between the head section of the second piston rod and the tail section of the second piston rod, the end face of the head section of the second piston rod is in contact with the end face of the tail section of the first piston rod, the tail section of the second piston rod penetrates through the second through hole, the end face of the tail section of the second piston rod is in contact with the end face of the head section of the third piston rod, the third piston rod is connected with one end of the output shaft, and the other end of the output shaft is connected with a drill bit;
a first mud groove is formed in the end face of the head section of the second piston rod; the first mud groove is used for enabling mud flowing from the upper joint to the inside of the first piston rod to flow out of the second piston rod through the first mud groove; a second mud groove is formed in the end face of the head section of the third piston rod; the second mud groove is used for enabling mud flowing from the upper joint to the inside of the first piston rod and the inside of the second piston rod to flow out of the third piston rod through the second mud groove;
the first piston rod can drive the output shaft to move when the end face of the head section is under the pressure action of slurry flowing in from the upper joint until a first step of the first piston rod is contacted with the first piston; the second piston rod can drive the third piston rod and the output shaft to move when the head section end surface of the second piston rod is under the pressure action of mud flowing out of the first mud groove until the second step is contacted with the second piston; the third piston rod can drive the output shaft to move when the head section end surface of the third piston rod is subjected to the pressure of the slurry flowing out of the second slurry groove;
the drilling tool also comprises a first sealing ring and a first retainer ring; the first sealing ring is in contact with the outer wall of the head section of the first piston rod and the inner wall of the shell, and the first retainer ring is positioned on the outer side of the head section of the first piston rod and is in contact with the first sealing ring;
the drilling tool also comprises a second sealing ring, a second retainer ring, a third sealing ring and a third retainer ring; the second sealing ring is in contact with the outer wall of the head section of the second piston rod and the inner wall of the shell, and the third sealing ring is in contact with the outer wall of the head section of the third piston rod and the inner wall of the shell; the second retainer ring is positioned on the outer side of the head section of the second piston rod and is in contact with the second sealing ring, and the third retainer ring is positioned on the outer side of the head section of the third piston rod and is in contact with the third sealing ring;
the shell is provided with a first air outlet through hole; the first air outlet through hole is used for discharging air in a cavity formed by the first piston, the tail section of the first piston rod, the first step and the shell when the first piston rod moves;
a second air outlet through hole is formed in the shell; and the second air outlet through hole is used for discharging air in a cavity formed by the second piston, the tail section of the second piston rod, the second step and the shell when the second piston rod moves.
2. The drilling tool according to claim 1, further comprising a first damping disc spring;
the first buffer disc spring is positioned on the outer side of the head section of the first piston rod.
3. The drilling tool according to claim 1, wherein the output shaft is splined to the housing.
4. The drilling tool according to claim 1, further comprising a second damping disc spring and a third damping disc spring;
the second buffer disc spring is located on the outer side of the head section of the second piston rod, and the third buffer disc spring is located on the outer side of the head section of the third piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743696.6A CN107780842B (en) | 2016-08-26 | 2016-08-26 | Drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610743696.6A CN107780842B (en) | 2016-08-26 | 2016-08-26 | Drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107780842A CN107780842A (en) | 2018-03-09 |
| CN107780842B true CN107780842B (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610743696.6A Active CN107780842B (en) | 2016-08-26 | 2016-08-26 | Drilling tool |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2279435Y (en) * | 1996-08-10 | 1998-04-22 | 大庆石油管理局钻井研究所 | Hydraulic drill feed for well boring |
| CN201297129Y (en) * | 2008-11-21 | 2009-08-26 | 东营市创元石油机械制造有限公司 | Automatic well hydraulic pressure vibration reduction bit-feeding device |
| CN203742437U (en) * | 2014-03-27 | 2014-07-30 | 济源华新石油机械有限公司 | Hydraulic pressurizer |
| CN104405321B (en) * | 2014-10-21 | 2017-09-01 | 中国石油天然气集团公司 | The pressure of the drill is pushed away plus device |
| CN206016685U (en) * | 2016-08-26 | 2017-03-15 | 中国石油天然气集团公司 | Drilling tool |
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2016
- 2016-08-26 CN CN201610743696.6A patent/CN107780842B/en active Active
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| CN107780842A (en) | 2018-03-09 |
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