Mechanical hydraulic coupling speed-up device

Abstract

The present application relates to the technical field of drill bit vibration, and discloses a mechanical hydraulic coupling speed increasing device, which comprises an upper joint, a conversion joint and a mandrel, the inner side of the lower end of the upper joint is fixedly installed with the outer side of the upper end of the conversion joint, and a limiting ring is arranged on the inner side of the upper part of the upper joint. The present application has reasonable structure and is convenient to use. In the drilling process, the loading and size adjustment of the drill bit torque can be realized by adjusting the spiral angle combination of the upper plug and the limiting flow guide plug. When the drilling fluid flows through the tool, the fluid enters the spiral channel of the upper plug due to the fact that the upper plug has no inner hole, and the upper plug is rotated by the fluid energy, thereby driving the mandrel to rotate and applying the torque to the drill bit. When the drill bit vibrates, the mandrel is retracted when the vibration degree exceeds the preset value, and the limiting spring is compressed. When the vibration is reduced, the limiting spring is restored, and the compressed energy storage is applied to the drill bit. In the process of reducing the vibration and protecting the drill bit, the energy of the drilling machine is saved, and the mechanical drilling speed is improved.

Description

Technical Field

[0001] This invention relates to the field of drill bit vibration technology and is a mechanical-hydraulic coupling speed-up device. Background Technology

[0002] During drilling, the drill bit experiences high-frequency, irregular vibrations as it cuts through the formation, which severely shortens the drill bit's lifespan, affects the mechanical drilling rate, and increases drilling costs. Summary of the Invention

[0003] This invention provides a mechanical-hydraulic coupling speed-up device that overcomes the shortcomings of the prior art. It can effectively solve the problem that the drill bit is subjected to high-frequency irregular vibration during the cutting of the formation, which seriously shortens the drill bit life, affects the mechanical drilling speed, and increases drilling costs.

[0004] The technical solution of this invention is achieved through the following measures: A mechanical-hydraulic coupling speed-up device includes an upper connector, a conversion connector, and a mandrel. The lower inner side of the upper connector is fixedly installed together with the upper outer side of the conversion connector. A limiting ring platform is provided on the upper inner side of the upper connector. The upper outer side of the mandrel is stepped, narrower at the top and wider at the bottom. The lower upper side of the mandrel is fitted inside the conversion connector. The upper upper side of the mandrel is located inside the upper connector and forms an annular cavity with the upper connector. A device capable of sealing the upper connector is fixedly installed at the upper end of the mandrel. The upper plug of the cavity abuts against the inner wall of the upper connector. The upper plug has a spiral channel that connects the inner cavity of the upper connector with the annular cavity. A limiting flow guide plug is installed in the middle of the annular cavity. The limiting flow guide plug has a spiral channel that connects the upper part and the lower part of the annular cavity. A limiting spring is installed between the upper plug and the limiting flow guide plug. A return spring is installed between the limiting flow guide plug and the step on the lower side of the upper part of the mandrel. A liquid outlet channel that connects the annular cavity and the inner cavity of the mandrel is provided on the lower side of the upper part of the mandrel.

[0005] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0006] A wear-resistant retaining ring is installed at the aforementioned limiting ring platform.

[0007] The aforementioned upper plug is shaped like an inverted bucket, and the upper end of the spindle is fixedly installed on the inner side of the upper plug by a thread.

[0008] At least one sealing ring is installed between the upper lower side of the aforementioned mandrel and the adapter.

[0009] The lower inner side of the upper connector and the upper outer side of the conversion connector are fixed together by threads. The upper inner side of the upper connector is provided with connecting threads, and the lower inner side of the spindle is provided with connecting threads.

[0010] The lower inner side of the aforementioned adapter is provided with a recess, and a limiting ring platform fitted inside the recess is provided on the lower outer side of the spindle.

[0011] This invention features a reasonable structure and is easy to use. During drilling, it is connected between the drill collar and the drill bit. Based on formation conditions, the spring forces of the limiting spring and the return spring are adjusted to regulate vibration reduction. The torque loading and magnitude of the drill bit are adjusted by combining the helical angles of the upper plug and the limiting guide plug. During drilling, when drilling fluid flows through the tool, since the upper plug has no internal hole, the fluid enters the helical channel of the upper plug. The fluid energy drives the upper plug to rotate, which in turn drives the mandrel to rotate, applying torque to the drill bit. When the drill bit vibrates, if the vibration exceeds a preset value, the mandrel retracts, and the limiting spring compresses. When the vibration decreases, the limiting spring returns to its original position, applying the compressed stored energy to the drill bit. This reduces vibration, protects the drill bit, saves drilling rig energy, and increases the mechanical drilling rate. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the front half-section structure of the present invention.

[0013] The codes in the attached diagram are as follows: 1 is the upper connector, 2 is the adapter connector, 3 is the mandrel, 4 is the limiting ring platform, 5 is the ring cavity, 6 is the inner cavity of the upper connector, 7 is the upper plug, 8 is the spiral channel, 9 is the limiting guide plug, 10 is the limiting spring, 11 is the return spring, 12 is the inner cavity of the mandrel, 13 is the wear-resistant retaining ring, 14 is the sealing ring, 15 is the recess, 16 is the limiting ring platform, and 17 is the liquid outlet channel. Detailed Implementation

[0014] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0015] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of "top" and "bottom," which are based on the instructions. Figure 1 The orientation of the layout is determined by the direction of the map.

[0016] The technical solution of this invention is achieved through the following measures:

[0017] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0018] As attached Figure 1As shown, the mechanical-hydraulic coupling speed-up device includes an upper connector 1, a conversion connector 2, and a spindle 3. The lower inner side of the upper connector 1 is fixedly installed with the upper outer side of the conversion connector 2. A limiting ring platform 4 is provided on the upper inner side of the upper connector 1. The upper outer side of the spindle 3 is stepped, narrower at the top and wider at the bottom. The upper lower side of the spindle 3 is fitted into the conversion connector 2. The upper upper side of the spindle 3 is located inside the upper connector 1 and forms an annular cavity 5 with the upper connector 1. An upper plug 7 that can seal the inner cavity 6 of the upper connector is fixedly installed on the upper end of the spindle 3. The outer side of the upper plug 7... The upper plug 7 abuts against the inner wall of the upper connector 1. A spiral channel 8 is provided on the upper plug 7 to connect the inner cavity 6 of the upper connector with the annular cavity 5. A limiting flow guide plug 9 is fitted in the middle of the annular cavity 5. A spiral channel 8 is provided on the limiting flow guide plug 9 to connect the upper and lower parts of the annular cavity 5. A limiting spring 10 is installed between the upper plug 7 and the limiting flow guide plug 9. A return spring 11 is installed between the limiting flow guide plug 9 and the step on the lower side of the upper part of the mandrel 3. A fluid outlet channel 17 is provided on the lower side of the upper part of the mandrel 3 to connect the annular cavity 5 and the inner cavity 12 of the mandrel. During drilling, this invention is connected between the drill collar and the drill bit. The spring force of the limiting spring 10 and the return spring 11 is adjusted according to the formation conditions to adjust the vibration reduction effect. The torque loading and magnitude of the drill bit are adjusted by combining and adjusting the spiral angles of the upper plug 7 and the limiting flow guide plug 9. During drilling, when drilling fluid flows through the tool, since the upper plug 7 has no internal bore, the fluid enters the spiral channel 8 of the upper plug 7. The fluid energy drives the upper plug 7 to rotate, which in turn drives the mandrel 3 to rotate, applying torque to the drill bit. When the drill bit vibrates, if the vibration exceeds a preset value, the mandrel 3 retracts, and the limiting spring 10 is compressed. When the vibration decreases, the limiting spring 10 returns to its original position, applying the compressed stored energy to the drill bit. This reduces vibration, protects the drill bit, saves drilling rig energy, and increases the mechanical drilling speed. Depending on the needs, both the upper plug 7 and the limiting guide plug 9 can be turbines.

[0019] The above-mentioned mechanical-hydraulic coupling speed-up device can be further optimized and / or improved according to actual needs:

[0020] As attached Figure 1 As shown, a wear-resistant retaining ring 13 is installed at the limiting ring platform 4. By setting the wear-resistant retaining ring 13, the damage caused by the upward impact of the upper plug 7 can be reduced.

[0021] As attached Figure 1 As shown, the upper plug 7 is shaped like an inverted barrel, and the upper end of the spindle 3 is fixedly installed on the inner side of the upper plug 7 by threads. This facilitates installation and maintenance.

[0022] As attached Figure 1 As shown, to increase sealing, at least one sealing ring 14 is installed between the upper lower side of the mandrel 3 and the adapter 2.

[0023] As attached Figure 1 As shown, for ease of installation and maintenance, the inner side of the lower end of the upper connector 1 and the outer side of the upper end of the adapter 2 are fixed together by threads. The inner side of the upper end of the upper connector 1 is provided with connecting threads, and the inner side of the lower end of the spindle 3 is provided with connecting threads.

[0024] As attached Figure 1 As shown, the lower inner side of the adapter 2 is provided with a recess 15, and the lower outer side of the spindle 3 is provided with a limiting ring 16 fitted inside the recess 15. This forms a limiting position for the spindle 3.

[0025] The above technical features constitute the preferred embodiment of the present invention, which has strong adaptability and optimal implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A mechanical hydraulic coupling speed boost device characterized by The utility model provides a drill head, including upper joint, conversion joint and mandrel, the inside of lower end of upper joint is fixedly installed with the outside of upper end of conversion joint, is equipped with the limit ring table in the inside of upper portion of upper joint, the outside of upper portion of mandrel is the stepped shape of narrow upper and wide lower, the lower side of upper portion of mandrel is sleeved in conversion joint, and the upper side of upper portion of mandrel is located in upper joint and forms ring cavity between upper joint, the upper end of mandrel is fixedly installed with the upper plug of being able to block the inner chamber of upper joint, the outside of upper plug is in abutment with the inner wall of upper joint, is equipped with the spiral channel of being able to communicate the inner chamber of upper joint with ring cavity on upper plug, is equipped with the limit flow plug of being able to communicate the upper portion of ring cavity with the lower portion of ring cavity in ring cavity, is equipped with the reset spring between the limit flow plug and the stepped place of lower side of upper portion of mandrel, is equipped with the liquid outlet channel of being able to communicate ring cavity with the inner chamber of mandrel on the lower side of upper portion of mandrel;Through the spring force adjustment of limit spring and reset spring, carry out the damping effect adjustment, and upper plug and limit flow plug all adopt the spiral angle combination adjustment of turbine, realize the loading and size adjustment of drill bit torque.

2. The mechanical hydraulic coupling velocity boost device of claim 1, wherein The limit ring table is provided with a wear-resistant stop ring.

3. A mechanical hydraulic coupling boost device according to claim 1 or 2, characterized in that The upper plug is in the shape of an inverted bucket, and the upper end of the mandrel is fixedly installed in the inside of the upper plug through screw threads.

4. The mechanical hydraulic coupling velocity increasing device according to claim 1 or 2, characterized in that At least one sealing ring is installed between the lower side of the upper portion of the mandrel and the conversion joint.

5. The mechanical hydraulic coupling velocity boost device of claim 3, wherein At least one sealing ring is installed between the lower side of the upper portion of the mandrel and the conversion joint.

6. A mechanical hydraulic coupling velocity increasing device according to claim 1 or 2 or 5, characterized in that The inside of the lower end of the upper joint is fixedly installed with the outside of the upper end of the conversion joint through screw threads, the inside of the upper end of the upper joint is provided with connecting screw threads, and the inside of the lower end of the mandrel is provided with connecting screw threads.

7. The mechanical hydraulic coupling velocity boost device of claim 3, wherein The inside of the lower end of the upper joint is fixedly installed with the outside of the upper end of the conversion joint through screw threads, the inside of the upper end of the upper joint is provided with connecting screw threads, and the inside of the lower end of the mandrel is provided with connecting screw threads.

8. The mechanical hydraulic coupling velocity boost device of claim 4, wherein The inside of the lower end of the upper joint is fixedly installed with the outside of the upper end of the conversion joint through screw threads, the inside of the upper end of the upper joint is provided with connecting screw threads, and the inside of the lower end of the mandrel is provided with connecting screw threads.

9. A mechanical hydraulic coupling velocity increasing device according to claim 1 or 2 or 5 or 7 or 8, characterized in that The inside of the lower end of the conversion joint is provided with a concave table, and the outside of the lower portion of the mandrel is provided with a limit ring table sleeved in the concave table.

10. The mechanical hydraulic coupling velocity boost device of claim 6, wherein The inside of the lower end of the conversion joint is provided with a concave table, and the outside of the lower portion of the mandrel is provided with a limit ring table sleeved in the concave table.

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