CN210217622U - Multistage piston enhancement mode oscillation nipple joint - Google Patents
Multistage piston enhancement mode oscillation nipple joint Download PDFInfo
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- CN210217622U CN210217622U CN201920204911.4U CN201920204911U CN210217622U CN 210217622 U CN210217622 U CN 210217622U CN 201920204911 U CN201920204911 U CN 201920204911U CN 210217622 U CN210217622 U CN 210217622U
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Abstract
The utility model discloses a multistage piston enhancement mode vibration nipple joint mainly by the integral key shaft, the dust ring, make up the movive seal, the spline housing, the sealing washer, the energy storage body, the oil blanket plug, the jump ring, stop screw, the pressure-bearing cover, prevent falling the joint, the dish spring, the pretension gasket, breathe the oil blanket, go up spacing joint, go up the pressure boost barrel, V type circle keeps off the ring, V type sealing washer, the clamping ring, go up the pressure boost piston rod, keep apart the piston, keep apart the spacing joint of piston, keep apart and support the cover, the piston locking ring, pressure boost piston down, pressure boost barrel down, spacing joint is constituteed the joint down with down. The utility model discloses an improve vibration nipple joint pressure feedback link, increase feedback area solves the problem that hydraulic pulse generating device pressure loss is high. The tool has simple structure, low cost and obvious effect of accelerating the drilling speed.
Description
Technical Field
The utility model relates to a multistage piston enhancement mode vibration nipple joint that is used for oil, natural gas directional well, horizontal well drilling operation in-process to use.
Background
In the drilling process of oil and natural gas, the problems of multiple interlayers in drilling, poor drilling pressure transmission, too low mechanical drilling speed, bending and buckling of a drill string, torque fluctuation, poor tool surface control, severe well bending and the like can be caused in large-displacement well drilling, so that the friction of the drill string is too large, and the drilling pressure is difficult to be transmitted downwards. The hydraulic oscillator can be used as a means for solving the above problems, namely, the accurate transmission of the bit pressure is realized by changing static friction into dynamic friction to reduce the friction force. At present, in the field application process of the hydraulic oscillator, the problems that the ground pump runs in an overload mode and safety production is not facilitated due to overhigh pressure consumption generally exist.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multistage piston enhancement mode oscillation nipple joint is in order to improve hydraulic oscillator efficiency to the problem that prior art exists. Friction between the downhole drilling tool assembly and a borehole can be reduced through the multistage piston enhanced type oscillation nipple, so that the bit pressure is accurately and effectively transmitted to the drill bit, the transmission of the bit pressure is improved, and torsional vibration is reduced.
The technical scheme of the utility model is that:
a multistage piston enhanced oscillation nipple comprises a spline shaft and a spline sleeve which are sleeved, limited and matched; the energy storage body, the pressurization cylinder body and the lower joint are connected below the spline sleeve from top to bottom; the upper limit joint, the pressurizing piston and the lower limit joint are connected to the lower part of the spline shaft from top to bottom; and a disc spring arranged in the energy storage body and the spline shaft annular space; wherein: the pressurizing cylinder body is formed by connecting an upper pressurizing cylinder body and a lower pressurizing cylinder body, and an inner convex edge is arranged at the joint of the upper pressurizing cylinder body and the lower pressurizing cylinder body; the pressurizing piston consists of an upper pressurizing piston and a lower pressurizing piston which are respectively arranged in the upper pressurizing cylinder body and the lower pressurizing cylinder body; the upper part of the upper pressurizing piston is respectively connected with the spline shaft through an upper limiting joint and is linked with the disc spring, and an upper pressurizing piston rod below the upper pressurizing piston extends to the lower part of the lower pressurizing piston; the lower end of the upper pressurizing piston rod is in sliding sealing insertion fit with the lower limiting joint, the outer part of the upper pressurizing piston rod and an inner convex edge at the joint of the upper pressurizing cylinder body and the lower pressurizing cylinder body form axial sliding sealing fit, and the lower limiting joint is connected in the lower joint; the lower pressurizing piston is sleeved outside the upper pressurizing piston rod, the upper part of the lower pressurizing piston is in linkage fit with the upper pressurizing piston rod, and the lower part of the lower pressurizing piston is in blocking fit with the lower limiting joint; the upper pressurizing piston and the lower pressurizing piston are respectively in sliding sealing fit with the upper pressurizing cylinder and the lower pressurizing cylinder; radial piston through holes are arranged in the axial direction of the upper pressurizing piston rod or the upper pressurizing piston rod and the lower limiting joint, and the upper piston through hole and the lower piston through hole are respectively communicated with the piston cavities of the upper pressurizing piston and the lower pressurizing piston.
The above scheme further comprises:
the external connection of integral key shaft spline lower extreme has the anti-falling to connect, and the anti-falling connects outside cover is equipped with and bears the pressure sleeve.
The upper pressurizing piston and the lower pressurizing piston are sleeved with a V-shaped ring retaining ring, a V-shaped sealing ring and a pressing ring and are locked and limited through a piston locking ring.
An isolation piston, a reciprocating dynamic seal, an isolation piston limit joint and an isolation support sleeve are sleeved downwards on an inner convex edge at the joint of the upper pressurizing piston rod and the upper pressurizing cylinder body and the lower pressurizing cylinder body.
An oil filling hole is formed in the energy storage body, the oil filling hole is sealed by an oil seal screw plug and a clamp spring, and a pre-tightening gasket is further mounted at a disc spring in the energy storage body.
The upper pressurizing barrel is provided with a breathing hole, and a breathing oil seal and a clamp spring are arranged on the breathing hole.
The lower pressurizing cylinder body is provided with a breathing hole.
And a dustproof ring and a combined dynamic seal are arranged between the spline shaft and the spline sleeve.
The utility model discloses a theory of operation of multistage piston enhancement mode oscillation nipple joint is: when the hydraulic oscillator pulse nipple generates a pressure pulse type, the lower pressure pulse is upwards transmitted to upper and lower pistons in the upper and lower pressurizing cylinders through an inner hole of the drilling tool, the pulse pressure acts on a pressure-bearing piston surface, the generated pressure acts upwards and sequentially passes through an upper pressurizing piston rod and an upper limiting joint, and finally acts on a tool spline shaft, the spline shaft moves upwards relative to the spline body, and a disc spring stores energy; the pulse pressure is reduced, the stored energy of the disc spring is released, the part of the spline mandrel, which is out of the spline body, retracts, the pressure disappears, the disc spring enables the mandrel to return to the initial position, one-time oscillation is completed, the upper pressurizing cylinder body and the lower pressurizing cylinder body are provided with breathing holes, the pressure difference between the inside and the outside of the drilling tool is balanced, and the pulse pressure feedback acts on the impact oscillation of the piston to cycle repeatedly.
The utility model has the advantages that: the utility model discloses an improve vibration nipple joint pressure feedback link, increase feedback area solves the problem that hydraulic pulse generating device pressure loss is high. The tool has simple structure, low cost and obvious effect of accelerating the drilling speed.
Drawings
Fig. 1 is the utility model discloses a multistage piston enhancement mode oscillation nipple joint schematic structure.
Wherein: 1 spline shaft, 2 dustproof rings, 3 combined dynamic seals, 4 spline sleeves, 5 sealing rings, 6 energy storage bodies, 7 oil seal screw plugs, 8 clamp springs, 9O-shaped sealing rings, 10 anti-loosening screws, 11 pressure-bearing sleeves, 12 anti-drop joints, 13 disc springs, 14 pre-tightening gaskets, 15 screws, 16 sealing rings, 17 clamp springs, 18 breathing oil seals, 19 sealing rings, 20 upper limit joints, 21 upper pressurizing cylinder bodies, 22 pressure rings, 23V-shaped retaining rings, 24V-shaped sealing rings, 25 support rings, 26 upper pressurizing pistons, 27 upper pressurizing piston rods, 28 isolating pistons, 29 reciprocating dynamic seals, 30 isolating piston limit joints, 31 isolating support sleeves, 32 piston locking rings, 33 cloth clamping retaining rings, 34 lower pressurizing pistons, 35 lower pressurizing cylinder bodies, 36 lower limit joints and 37 lower joints.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Example 1
A multistage piston enhanced oscillation nipple comprises a spline shaft 1 and a spline sleeve 4 which are sleeved, limited and matched; the energy storage body 6, the pressurization cylinder body and the lower joint 37 are connected below the spline sleeve 4 from top to bottom; the upper limit joint 20, the pressurizing piston and the lower limit joint 36 are connected with the lower part of the spline shaft 1 from top to bottom; and a disc spring 13 arranged in the energy storage body 6 and the annular space of the spline shaft 1; wherein: the pressurizing cylinder body is formed by connecting an upper pressurizing cylinder body 21 and a lower pressurizing cylinder body 35, and an inner convex edge is arranged at the joint of the upper pressurizing cylinder body 21 and the lower pressurizing cylinder body 35; the pressurizing piston consists of an upper pressurizing piston 26 and a lower pressurizing piston 34 which are respectively arranged in the upper pressurizing cylinder 21 and the lower pressurizing cylinder 35; the upper part of the upper pressurizing piston 26 is respectively connected with the spline shaft 1 and linked with the disc spring 13 through an upper limit joint 20, and an upper pressurizing piston rod 27 below the upper pressurizing piston 26 extends to the lower part of a lower pressurizing piston 34; the lower end of the upper pressurizing piston rod 27 is in sliding sealing insertion fit with the lower limiting joint 36, the outer part of the upper pressurizing piston rod 27 and the inner convex edge at the joint of the upper pressurizing cylinder 21 and the lower pressurizing cylinder 35 form axial sliding sealing fit, and the lower limiting joint 36 is connected in the lower joint 37; the lower pressurizing piston 34 is sleeved outside the upper pressurizing piston rod 27, the upper part of the lower pressurizing piston is in linkage fit with the upper pressurizing piston rod 27, and the lower part of the lower pressurizing piston is in blocking fit with the lower limiting joint 36; the upper pressurizing piston 26 and the lower pressurizing piston 34 are respectively in sliding sealing fit with the upper pressurizing cylinder 21 and the lower pressurizing cylinder 35; radial piston through holes are axially arranged up and down along the upper pressurizing piston rod 27 or the upper pressurizing piston rod 27 and the lower limiting joint 36, and the upper piston through hole and the lower piston through hole are respectively communicated with the piston cavities of the upper pressurizing piston 26 and the lower pressurizing piston 34.
The above embodiment further comprises:
the external connection of integral key shaft 1 spline lower extreme has anti-falling joint 12 to connect, and anti-falling joint 12 outside cover is equipped with and bears and press cover 11.
The upper pressurizing piston 26 and the lower pressurizing piston 34 are sleeved with a V-shaped retaining ring 23, a V-shaped sealing ring 24 and a pressing ring 22, and are locked and limited by a piston locking ring 32.
An isolation piston 28, a reciprocating dynamic seal 29, an isolation piston limit joint 30 and an isolation support sleeve 31 are sleeved downwards on an inner convex edge at the joint of the upper pressurizing piston rod 27 and the upper pressurizing cylinder 21 and the lower pressurizing cylinder 35.
An oil filling hole is formed in the energy storage body 6, the oil filling hole is sealed by an oil seal screwed plug 7 and a clamp spring 8, and a pre-tightening gasket 14 is further installed at a disc spring 13 in the energy storage body 6.
The upper pressurizing cylinder 21 is provided with a breathing hole, and a breathing oil seal 18 and a clamp spring 17 are arranged on the breathing hole.
The lower pressurizing cylinder 35 is provided with a breathing hole.
A dustproof ring 2 and a combined dynamic seal 3 are arranged between the spline shaft 1 and the spline housing 4.
Exemplary embodiment 2
Referring to the attached drawing 1, the multistage piston enhanced type oscillation nipple comprises a spline shaft 1, a dust ring 2, a combined dynamic seal 3, a spline sleeve 4, a seal ring 5, an energy storage body 6, an oil seal plug 7, a clamp spring 8, a locking screw 10, a pressure bearing sleeve 11, an anti-drop joint 12, a disc spring 13, a pre-tightening gasket 14, a breathing oil seal 18, an upper limiting joint 20, an upper pressurizing cylinder 21, a V-shaped baffle ring, a V-shaped seal ring 24, a pressure ring 22, an upper pressurizing piston rod 27, an isolating piston 28, an isolating piston limiting joint 29, an isolating support sleeve 31, a piston locking ring 32, a lower pressurizing piston 34, a lower pressurizing cylinder 35, a lower limiting joint 36 and a lower joint 37. The integral key shaft 1 and the spline housing 4 are sleeved, a dust ring 2 and a combined dynamic seal 3 are arranged between the integral key shaft 1 and the spline housing 4, the lower end of the spline housing 4 is connected with the energy storage body 6 through threads, an oil filling hole is formed in the energy storage body 6, the oil filling hole is sealed by an oil seal plug 7 and a clamp spring 8, and a disc spring 13 and a pre-tightening gasket 14 are arranged in the energy storage body 6; the lower end of the spline shaft 1 is provided with threads which are connected with an anti-drop joint 12, so that the integral tool drop caused by the fracture of a lower limiting joint is prevented, and a pressure bearing sleeve 11 is sleeved outside the anti-drop joint 12 and used for transferring the oscillating force of a disc spring 13 to reset the spline shaft 1; the disc spring 13 and the pre-tightening gasket 14 are sleeved on the spline shaft 1, the spline shaft 1 plays a role of internal support to keep the stability of the disc spring group 13, the lower end of the spline shaft 1 is connected with an upper limiting joint 20, and the upper limiting joint 20 is used for pre-tightening the disc spring 13; the lower end of the energy storage body 6 is connected with the upper pressurizing cylinder 21 through threads, a breathing hole is formed in the upper pressurizing cylinder 21, the balance of internal and external pressure is kept, and a breathing oil seal 18 is arranged on the breathing hole and used for blocking rock debris; the lower end of the limiting joint 20 is connected with an upper pressurizing piston, the upper pressurizing piston is sleeved with a V-shaped ring retaining ring 23, a V-shaped sealing ring 24 and a pressing ring 22, and the upper pressurizing piston is locked and limited by a piston locking ring 32; the middle part of the upper pressurizing piston rod 27 is sleeved with an isolation piston 28, an isolation piston limit joint 30, an isolation support sleeve 31 and a combined sealing ring, and the isolation piston is used for separating an upper piston from a lower piston; the lowest end of the upper pressurizing piston rod 27 is sleeved with a lower pressurizing piston 34, the lower pressurizing piston 34 is sleeved with a V-shaped ring baffle ring 23, a V-shaped sealing ring 24 and a pressing ring 22, and the piston is locked and limited by a piston locking ring 32; the upper piston and the lower piston sleeved on the upper pressurizing piston rod 27 are locked by a lower limiting joint 36, and the upper piston and the lower piston are respectively arranged in the upper pressurizing cylinder body 21 and the lower pressurizing cylinder body 35; be equipped with the breathing hole on the lower pressure boost barrel 35, lower pressure boost barrel 35 passes through the screw thread and is connected with lower clutch 37.
When a hydraulic oscillator pulse short section generates pressure pulse during drilling operation of a directional well and a horizontal well, the lower pressure pulse is upwards transmitted to upper and lower pistons of upper and lower pressurizing cylinders 21 and 35 through an inner hole of a drilling tool, the pulse pressure acts on a pressure-bearing piston surface, the generated pressure acts upwards and sequentially passes through an upper pressurizing piston rod 27 and an upper limiting joint 20, finally the pressure acts on a tool spline shaft 1, the spline shaft 1 moves upwards relative to a spline sleeve 4, a disc spring 13 stores energy, the pulse pressure is reduced, the stored energy of the disc spring 13 is released, the part of the spline shaft 1 protruding out of the spline sleeve 4 retracts, the pressure disappears, the disc spring 13 enables the spline shaft 1 to return to an initial position to complete one-time oscillation, breathing holes are formed in the upper and lower pressurizing cylinders 21 and 35, the pressure difference between the inside and the outside of the drilling tool is balanced, and the pulse pressure.
Claims (8)
1. A multistage piston enhanced type oscillation nipple comprises a spline shaft (1) and a spline sleeve (4) which are sleeved, limited and matched; the energy storage body (6), the pressurization cylinder body and the lower joint (37) are connected below the spline sleeve (4) from top to bottom; the upper limit joint (20), the pressurizing piston and the lower limit joint (36) are connected to the lower part of the spline shaft (1) from top to bottom; and a disc spring (13) arranged in the annular space of the energy storage body (6) and the spline shaft (1); the method is characterized in that: the pressurizing cylinder body is formed by connecting an upper pressurizing cylinder body (21) and a lower pressurizing cylinder body (35), and an inner convex edge is arranged at the joint of the upper pressurizing cylinder body (21) and the lower pressurizing cylinder body (35); the pressurizing piston consists of an upper pressurizing piston (26) and a lower pressurizing piston (34) which are respectively arranged in an upper pressurizing cylinder body (21) and a lower pressurizing cylinder body (35); the upper part of the upper pressurizing piston (26) is respectively connected with the spline shaft (1) through an upper limiting joint (20) and linked with the disc spring (13), and an upper pressurizing piston rod (27) below the upper pressurizing piston (26) extends to the lower part of the lower pressurizing piston (34); the lower end of the upper pressurizing piston rod (27) is in sliding sealing insertion fit with the lower limiting joint (36), the outer part of the upper pressurizing piston rod (27) and an inner convex edge at the joint of the upper pressurizing cylinder body (21) and the lower pressurizing cylinder body (35) form axial sliding sealing fit, and the lower limiting joint (36) is connected in the lower joint (37); the lower pressurizing piston (34) is sleeved outside the upper pressurizing piston rod (27), the upper part of the lower pressurizing piston is in linkage fit with the upper pressurizing piston rod (27), and the lower part of the lower pressurizing piston is in blocking fit with the lower limiting joint (36); the upper pressurizing piston (26) and the lower pressurizing piston (34) are respectively in sliding sealing fit with the upper pressurizing cylinder (21) and the lower pressurizing cylinder (35); radial piston through holes are axially arranged up and down along the upper pressurizing piston rod (27) or the upper pressurizing piston rod (27) and the lower limiting joint (36), and the upper piston through hole and the lower piston through hole are respectively communicated with the piston cavities of the upper pressurizing piston (26) and the lower pressurizing piston (34).
2. The multi-stage piston-enhanced oscillation sub of claim 1, wherein: the external connection of integral key shaft (1) spline lower extreme has anti-falling joint (12) to connect, and anti-falling joint (12) outside cover is equipped with and is held pressure cover (11).
3. The multi-stage piston-enhanced oscillation sub of claim 1 or 2, wherein: the upper pressurizing piston (26) and the lower pressurizing piston (34) are sleeved with a V-shaped retaining ring (23), a V-shaped sealing ring (24) and a pressing ring (22) and are locked and limited by a piston locking ring (32).
4. The multi-stage piston-enhanced oscillation sub of claim 3, wherein: an isolation piston (28), a reciprocating dynamic seal (29), an isolation piston limit joint (30) and an isolation support sleeve (31) are sleeved downwards on an inward convex edge at the joint of the upper pressurizing piston rod (27) and the upper pressurizing cylinder body (21) and the lower pressurizing cylinder body (35).
5. The multi-stage piston-enhanced oscillation sub of claim 4, wherein: an oil filling hole is formed in the energy storage body (6), the oil filling hole is sealed by an oil seal screwed plug (7) and a clamp spring (8), and a pre-tightening gasket (14) is further mounted at a disc spring (13) in the energy storage body (6).
6. The multi-stage piston-enhanced oscillation sub of claim 5, wherein: the upper pressurizing cylinder body (21) is provided with a breathing hole, and a breathing oil seal (18) and a clamp spring (17) are arranged on the breathing hole.
7. The multi-stage piston-enhanced oscillation sub of claim 6, wherein: the lower pressurizing cylinder body (35) is provided with a breathing hole.
8. The multi-stage piston-enhanced oscillation sub of claim 7, wherein: a dustproof ring (2) and a combined dynamic seal (3) are arranged between the spline shaft (1) and the spline sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204911.4U CN210217622U (en) | 2019-02-18 | 2019-02-18 | Multistage piston enhancement mode oscillation nipple joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204911.4U CN210217622U (en) | 2019-02-18 | 2019-02-18 | Multistage piston enhancement mode oscillation nipple joint |
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| Publication Number | Publication Date |
|---|---|
| CN210217622U true CN210217622U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920204911.4U Active CN210217622U (en) | 2019-02-18 | 2019-02-18 | Multistage piston enhancement mode oscillation nipple joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370226A (en) * | 2021-12-15 | 2022-04-19 | 西南石油大学 | Hydraulic variable-level small-pressure-drop strong-impact shock tool based on radio frequency identification |
-
2019
- 2019-02-18 CN CN201920204911.4U patent/CN210217622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370226A (en) * | 2021-12-15 | 2022-04-19 | 西南石油大学 | Hydraulic variable-level small-pressure-drop strong-impact shock tool based on radio frequency identification |
| CN114370226B (en) * | 2021-12-15 | 2024-03-22 | 西南石油大学 | Hydraulic variable-stage small-pressure-drop strong-impact oscillating tool based on radio frequency identification |
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