CN210685863U - Hydraulic oscillator for directional drilling operation - Google Patents
Hydraulic oscillator for directional drilling operation Download PDFInfo
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- CN210685863U CN210685863U CN201921757962.6U CN201921757962U CN210685863U CN 210685863 U CN210685863 U CN 210685863U CN 201921757962 U CN201921757962 U CN 201921757962U CN 210685863 U CN210685863 U CN 210685863U
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- cylinder
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- directional drilling
- outer cylinder
- hydroscillator
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 210000002445 nipple Anatomy 0.000 claims abstract description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035485 pulse pressure Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic oscillator for directional drilling operation comprises power nipple joint and vibration nipple joint: the power nipple comprises a power shell, a bearing, a rotating shaft, a blade, a connecting frame, a rotating cylinder and a piston; the vibration short section comprises a sliding sleeve, a sliding shaft, a connecting sleeve and a disc spring. The utility model has the advantages that the rotary cylinder structure is adopted to directly push the vibration nipple to perform periodic reciprocating vibration, compared with the traditional driving mode of utilizing water pressure change, the vibration frequency is slowed down, the vibration amplitude and the period are more stable, the influence of high-frequency vibration on underground high-precision instruments is effectively avoided, and the overall working stability of the drilling tool is ensured; additionally, the utility model discloses drilling fluid can not erode hydraulic oscillator's vulnerable part when using, including gyro wheel, dish spring etc. the life of oscillator is effectively prolonged.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a hydraulic oscillator for directional drilling operation.
Background
In the directional drilling operation process, a drilling tool assembly or a drilling rod is in contact with a well wall, so that the frictional resistance between the drilling tool and the well wall is large, the loss in the drilling pressure transmission process is increased, and the drilling efficiency is reduced; along with the lengthening of the horizontal section of the well bore, the phenomena of pressure release, adhesion and tool loss are more and more, so that the drilling speed is greatly limited, the extension of the length of the horizontal section is restricted, and therefore, the focus of attention in the industry is focused on how to reduce the resistance, realize the rapid drilling and improve the length of the horizontal section of the well. The hydraulic oscillator can generate vibration along the axial direction of the drilling tool assembly or the drill rod under the action of water force, the vibration can effectively change the conversion of axial load, reduce the frictional resistance and effectively transfer stable drilling pressure, thereby effectively solving the frictional resistance between the drilling tool and the well wall, preventing the pressure of the drilling tool from being released and improving the drilling speed, particularly protecting the drill bit to improve the mechanical drilling speed and the drilling footage of the drill bit in the sliding drilling process with a screw rod, shortening the drilling period and reducing the drilling-out times and the drilling-sticking risk of the drill bit.
The traditional hydraulic oscillator is composed of a vibration short section and a power short section, when drilling fluid passes through the power short section, a screw is driven to rotate, an overflowing hole of a fixed valve disc at the tail end of the screw is arranged in the center and is tightly matched with an oscillating valve disc with an eccentric overflowing hole, and as a rotor rotates, the overflowing holes of 2 valve discs are periodically staggered and overlapped, so that the overflowing area at the lower end of a tool is periodically changed, the pressure at the upper part of the tool is periodically changed, and pulse pressure is formed. When the pressure rises, the drilling fluid pressure pushes the piston and the mandrel to compress the disc spring, and the mandrel extends out; when the pressure is reduced, the mandrel returns to the original position, so that the pulse pressure causes the axial vibration of the vibration short section, the friction condition between the drill string and the well wall is changed, and the purposes of reducing friction resistance and increasing speed are achieved.
However, the oscillation mode of the conventional hydroscillator has the following disadvantages: the process of drilling fluid flowing away or backlogging is gradual, but the change of the flowing area is rapid, so that the period of internal water pressure change is too short, the oscillation frequency is rapid, the oscillation amplitude is small and unstable, and the normal operation of a downhole high-precision instrument is easily influenced, for example, measurement of MWD is influenced, and the instrument has no signal.
Disclosure of Invention
The invention aims to provide a hydraulic oscillator for directional drilling operation, which overcomes the defects of too fast oscillation frequency, small oscillation amplitude and instability of the traditional hydraulic oscillator.
The invention realizes the purpose through the following technical scheme:
a hydraulic oscillator for directional drilling operation is composed of a power short section and a vibration short section:
the power nipple comprises a power shell, a bearing, a rotating shaft, blades, a connecting frame, a rotating cylinder and a piston, wherein the rotating shaft is movably connected in the power shell through the bearing, the blades are uniformly arranged on the rotating shaft, the rotating cylinder is installed at the top end of the rotating shaft through the connecting frame, the rotating cylinder is formed by bonding an outer cylinder and an inner cylinder, the height of the inner cylinder is greater than that of the outer cylinder, the top end face of the outer cylinder is of a fluctuating structure, the piston is arranged on the inner wall of the power shell, and the inner side of the piston is in close contact with the outer cylinder of the rotating cylinder;
the vibration nipple joint includes sliding sleeve, sliding shaft, adapter sleeve and dish spring, the tip at power shell is connected to the sliding sleeve, the sliding shaft activity is established inside the sliding sleeve, adapter sleeve one end fixed connection is on the sliding shaft, and the other end hugs closely in the inner tube outer wall of a rotatory section of thick bamboo, and is equipped with the bracing piece at this end, be equipped with the gyro wheel on the bracing piece, the gyro wheel is pressed at the urceolus top end face of a rotatory section of thick bamboo, dish spring one end is connected in the sliding sleeve, and the other end is connected.
The further improvement lies in that the heights of any two points on the end surface of the top of the outer cylinder, which are symmetrical to the cylinder center, are equal, and two groups of support rods and two groups of idler wheels are symmetrically arranged at the ends of the connecting sleeves.
The further improvement is that the undulation structure of the top end surface of the outer cylinder is formed by alternately connecting convex semi-arc surfaces and concave semi-arc surfaces with equal radius.
The further improvement is that the connecting frame is in a cross structure or a three-fork structure.
The further improvement is that the outer cylinder of the rotary cylinder is made of Al2O3The inner cylinder is made of wear-resistant rubber materials, and expansion rings are uniformly embedded in the wall of the inner cylinder.
The expansion ring is further improved in that the expansion ring is composed of two clamping plates and a plurality of elastic rods, the elastic rods are sequentially connected end to end after being bent into a circular arc shape to form an annular ring, the two clamping plates are respectively clamped on two side faces of the annular ring, the two clamping plates are fixedly connected through screws, and the screws are alternately arranged on the inner side and the outer side of the elastic rods.
The improved structure is characterized in that a plurality of annular grooves are formed in the outer barrel of the rotary barrel, annular protrusions matched with the annular grooves are formed on the inner side of the piston, and the annular protrusions are correspondingly embedded in the annular grooves.
The invention has the beneficial effects that: the rotary cylinder structure is adopted to directly push the vibration nipple to perform periodic reciprocating vibration, compared with the traditional driving mode utilizing water pressure change, the vibration frequency is reduced, the vibration amplitude and the period are more stable, the influence of high-frequency vibration on an underground high-precision instrument is effectively avoided, and the integral working stability of the drilling tool is ensured; in addition, when the drilling fluid is used, the drilling fluid cannot erode vulnerable parts of the hydraulic oscillator, including the roller, the disc spring and the like, and the service life of the oscillator is effectively prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a connection relationship diagram of the rotary cylinder and the connecting sleeve;
FIG. 3 is a cross-shaped structure diagram of the connecting frame;
FIG. 4 is a schematic diagram of a three-pronged structure of a connecting frame;
fig. 5 is a schematic structural view of the stent ring;
in the figure: 1. a power housing; 2. a bearing; 3. a rotating shaft; 4. a blade; 5. a connecting frame; 6. a piston; 7. an outer cylinder; 8. an inner barrel; 9. a relief structure; 10. a sliding sleeve; 11. a slide shaft; 12. connecting sleeves; 13. a disc spring; 14. a support bar; 15. a roller; 16. an expansion ring; 17. a splint; 18. an elastic rod; 19. an annular groove; 20. an annular protrusion.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Referring to fig. 1 to 5, a hydraulic oscillator for directional drilling operation is composed of a power sub and a vibration sub.
The power nipple comprises a power shell 1, a bearing 2, a rotating shaft 3, blades 4, a connecting frame 5, a rotating cylinder and a piston 6, wherein the rotating shaft 3 is movably connected in the power shell 1 through the bearing 2, and the bearing 2 is provided with a plurality of water permeable holes (not shown in the figure) for circulating drilling fluid; blades 4 are evenly arranged on a rotating shaft 3, a rotating cylinder is installed on the top end of the rotating shaft 3 through a connecting frame 5, the rotating cylinder is formed by bonding an outer cylinder 7 and an inner cylinder 8, the bottom of the outer cylinder 7 and the bottom of the inner cylinder 8 are parallel and level, the top height of the inner cylinder 8 is larger than that of the outer cylinder 7, the top end face of the outer cylinder 7 is set to be a fluctuation structure 9, a piston 6 is arranged on the inner wall of a power shell 1, the inner side of the piston 6 is in close contact with the outer cylinder 7 of the rotating cylinder, and the sealing water blocking between the power shell 1.
In addition, the vibration short section comprises a sliding sleeve 10, a sliding shaft 11, a connecting sleeve 12 and a disc spring 13, the sliding sleeve 10 is connected to the end of the power shell 1, the sliding shaft 11 is movably arranged inside the sliding sleeve 10, one end of the connecting sleeve 12 is fixedly connected to the sliding shaft 11, the other end of the connecting sleeve is tightly attached to the outer wall of the inner cylinder 8 of the rotary cylinder, a supporting rod 14 is arranged at the end of the connecting sleeve, a roller 15 is arranged on the supporting rod 14, the roller 15 is pressed on the top end face of the outer cylinder 7 of the rotary cylinder, one end of the disc spring.
As the structure of the embodiment of the invention, the heights of any two points on the top end surface of the outer cylinder 7, which are symmetrical to the cylinder center, are equal, and two groups of support rods 14 and rollers 15 are symmetrically arranged at the end of the connecting sleeve 12. Therefore, no matter how the rotary drum rotates, the two rollers 15 can simultaneously press on the top end surface of the outer drum 7, and the lifting synchronization is kept, so that better supporting and driving effects can be provided.
As an embodiment structure of the invention, the undulation structure 9 on the top end surface of the outer cylinder 7 is formed by alternately connecting convex semi-circular arc surfaces and concave semi-circular arc surfaces with equal radius. Generally, the convex semicircular arc surface and the concave semicircular arc surface are respectively provided with two convex semicircular arc surfaces, namely when the outer cylinder 7 rotates for one circle, the roller 15 rises to the highest position and falls to the lowest position twice on the top end surface of the outer cylinder 7 to generate two periodic oscillations, and the structure of the semicircular arc top surface is beneficial to increasing the stability of the roller 15 during rolling.
As an example structure of the present invention, the connecting frame 5 has a cross-shaped structure or a three-forked structure (as shown in fig. 3 and 4). Since the drilling fluid needs to flow through the middle of the connecting frame 5, a larger-area flow path needs to be formed on the premise of ensuring the stable connecting action.
As an embodiment structure of the invention, the outer cylinder 7 of the rotary cylinder is made of Al2O3Made of a wear-resistant ceramic material, Al2O3The wear-resistant ceramic material can provide higher strength and wear resistance; the inner cylinder 8 is made of wear-resistant rubber material, and the wear-resistant rubber has certain elasticity and flexibility and can play a role in flexible sealing. In addition, because the outer cylinder 8 needs to rotate relatively to the connecting sleeve 12 at a high speed and also needs to move up and down relatively, a gap is easily generated between the inner cylinder 8 and the connecting sleeve 12. Therefore, in order to improve the fatigue resistance of the inner cylinder 8, annular holes are uniformly formed in the wall of the inner cylinder 8, expansion rings 16 are embedded in the annular holes, and the expansion rings 16 are embedded every 4-6cm and used for providing annular expansion force for the inner cylinder 8, so that the inner cylinder 8 is always tightly attached to the connecting sleeve 12, and the drilling fluid is prevented from flowing out.
As an embodiment structure of the invention, the expansion ring 16 is composed of two clamping plates 17 and a plurality of elastic rods 18, the elastic rods 18 are sequentially connected end to end after being bent into an arc shape to form an annular ring, the two clamping plates 17 are respectively clamped on two side surfaces of the annular ring, the two clamping plates 17 are fixedly connected through screws, and the screws are alternately arranged on the inner side and the outer side of the elastic rods 18. Because each elastic rod 18 is bent into an arc shape, the circle center of each elastic rod faces inwards, and the elastic rods have the tendency of straightening, the expansion ring 16 has the tendency of outward expansion and deformation of the whole body; the two clamping plates 17 are arranged to hold each elastic rod 18 against lateral (non-planar) deformation and to limit the minimum and maximum radii of deformation of the ring 16. When the expansion ring 16 is installed, the radius of the annular hole in the inner wall of the inner cylinder 8 is between the minimum radius and the maximum radius, so that the expansion ring always provides annular expansion force for the inner cylinder 8.
It should be noted that the elastic rod 18 may be made of elastic rubber or alloy material with a radius smaller than 0.5cm, the expansion force is not controlled to be too large or too small, and too small cannot play a role in supporting and sealing, and too large will cause a large friction force between the inner cylinder 8 and the connecting sleeve 12, which will affect the rotation of the rotating cylinder.
As the structure of the embodiment of the invention, a plurality of annular grooves 19 are arranged on the outer cylinder 7 of the rotary cylinder, annular protrusions 20 matched with the annular grooves 19 are formed on the inner side of the piston 6, and the annular protrusions 20 are correspondingly embedded in the annular grooves 19, so that the piston 6 is in movable contact with the outer cylinder 7, and the rotary stability and the sealing performance of the rotary cylinder are improved.
The working principle of the invention is as follows:
drilling fluid is poured into from a flow channel in the middle of the sliding shaft 11, sequentially passes through the connecting sleeve 12, the inner cylinder 8, the connecting frame 5 and the upper bearing 2, and impacts the blade 4 on the rotating shaft 3 to enable the blade 4 and the rotating shaft 3 to rotate, the rotating shaft 3 drives the connecting frame 5 and the rotating cylinder to rotate, at the moment, the roller 15 starts to roll along the top end face of the outer cylinder 7, and the fluctuation structure 9 enables the height of the roller 15 to be changed periodically. When the roller 15 is at a high position, the connecting sleeve 12 and the sliding shaft 11 are supported to move upwards, and the disc spring 13 is compressed; when the roller 15 is at a low position, the slide shaft 11 moves downward under the action of the disc spring 13 and returns to the original position. Therefore, the periodic reciprocating motion causes the axial vibration of the vibration short section, changes the friction condition between a drill column and a well wall, and achieves the purposes of reducing friction resistance and increasing speed. Meanwhile, due to the arrangement of the inner cylinder 8 and the piston 6, drilling fluid can only circulate in the sliding shaft 11, the connecting sleeve 12 and the inner cylinder 8 and can not flow to gaps among the sliding shaft 11, the connecting sleeve 12, the rotating cylinder and the power shell 1, so that vulnerable parts such as the roller 15 and the disc spring 13 can not be eroded, and the service life of the hydraulic oscillator is prolonged.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The utility model provides a hydraulic oscillator for directional drilling operation, comprises power nipple joint and vibration nipple joint, its characterized in that:
the power nipple comprises a power shell (1), a bearing (2), a rotating shaft (3), blades (4), a connecting frame (5), a rotating cylinder and a piston (6), wherein the rotating shaft (3) is movably connected in the power shell (1) through the bearing (2), the blades (4) are uniformly arranged on the rotating shaft (3), the rotating cylinder is installed at the top end of the rotating shaft (3) through the connecting frame (5), the rotating cylinder is formed by bonding an outer cylinder (7) and an inner cylinder (8), the height of the inner cylinder (8) is greater than that of the outer cylinder (7), the top end face of the outer cylinder (7) is set to be a fluctuating structure (9), the piston (6) is arranged on the inner wall of the power shell (1), and the inner side of the piston (6) is in close contact with the outer cylinder (7) of the rotating cylinder;
the vibration nipple joint includes sliding sleeve (10), sliding shaft (11), adapter sleeve (12) and dish spring (13), the tip in power shell (1) is connected in sliding sleeve (10), sliding shaft (11) activity is established inside sliding sleeve (10), adapter sleeve (12) one end fixed connection is on sliding shaft (11), and the other end hugs closely in inner tube (8) outer wall of a rotatory section of thick bamboo, and is equipped with bracing piece (14) at this end, be equipped with gyro wheel (15) on bracing piece (14), gyro wheel (15) press at urceolus (7) top end face of a rotatory section of thick bamboo, dish spring (13) one end is connected in sliding sleeve (10), and the other end is connected in adapter sleeve (12).
2. A hydroscillator for directional drilling operations as defined in claim 1 wherein: the height of any two points on the end surface of the top of the outer cylinder (7) which are symmetrical to the cylinder center is equal, and two groups of support rods (14) and rollers (15) are symmetrically arranged at the ends of the connecting sleeve (12).
3. A hydroscillator for directional drilling operations as defined in claim 1 wherein: the undulation structure (9) on the top end surface of the outer cylinder (7) is formed by alternately connecting convex semi-arc surfaces and concave semi-arc surfaces with equal radius.
4. A hydroscillator for directional drilling operations as defined in claim 1 wherein: the connecting frame (5) is of a cross structure or a three-fork structure.
5. A hydroscillator for directional drilling operations as defined in claim 1 wherein: the outer cylinder (7) of the rotary cylinder is made of Al2O3The inner cylinder (8) is made of wear-resistant ceramic material, the inner cylinder (8) is made of wear-resistant rubber material, and expansion rings (16) are uniformly embedded in the wall of the inner cylinder (8).
6. A hydroscillator for directional drilling operations as defined in claim 5 wherein: the expansion ring (16) is composed of two clamping plates (17) and a plurality of elastic rods (18), the elastic rods (18) are sequentially connected end to end after being bent into an arc shape to form an annular ring, the two clamping plates (17) are respectively clamped on two side faces of the annular ring, the two clamping plates (17) are fixedly connected through screws, and the screws are alternately arranged on the inner side and the outer side of the elastic rods (18).
7. A hydroscillator for directional drilling operations as defined in claim 1 wherein: the outer cylinder (7) of the rotary cylinder is provided with a plurality of annular grooves (19), annular protrusions (20) matched with the annular grooves (19) are formed on the inner side of the piston (6), and the annular protrusions (20) are correspondingly embedded in the annular grooves (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921757962.6U CN210685863U (en) | 2019-10-20 | 2019-10-20 | Hydraulic oscillator for directional drilling operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921757962.6U CN210685863U (en) | 2019-10-20 | 2019-10-20 | Hydraulic oscillator for directional drilling operation |
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| Publication Number | Publication Date |
|---|---|
| CN210685863U true CN210685863U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921757962.6U Active CN210685863U (en) | 2019-10-20 | 2019-10-20 | Hydraulic oscillator for directional drilling operation |
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| CN (1) | CN210685863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566122A (en) * | 2019-10-20 | 2019-12-13 | 达坦能源科技（上海）有限公司 | Hydraulic oscillator for directional drilling operation |
| CN110566122B (en) * | 2019-10-20 | 2024-07-05 | 上海达坦能源科技股份有限公司 | Hydraulic oscillator for directional drilling operation |
-
2019
- 2019-10-20 CN CN201921757962.6U patent/CN210685863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566122A (en) * | 2019-10-20 | 2019-12-13 | 达坦能源科技（上海）有限公司 | Hydraulic oscillator for directional drilling operation |
| CN110566122B (en) * | 2019-10-20 | 2024-07-05 | 上海达坦能源科技股份有限公司 | Hydraulic oscillator for directional drilling operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 1807, 497 Zhengli Road, Yangpu District, Shanghai Patentee after: Shanghai datan Energy Technology Co.,Ltd. Address before: Room 1807, 497 Zhengli Road, Yangpu District, Shanghai Patentee before: TARTAN ENERGY TECH (SHANGHAI) LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A hydraulic oscillator for directional drilling operations Granted publication date: 20200605 Pledgee: Industrial Bank Co.,Ltd. Shanghai Pengpu Sub branch Pledgor: Shanghai datan Energy Technology Co.,Ltd. Registration number: Y2024310000404 |