CN108457597A - A kind of combination sealing formula long-life oscillation assembly - Google Patents
A kind of combination sealing formula long-life oscillation assembly Download PDFInfo
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- CN108457597A CN108457597A CN201810168010.4A CN201810168010A CN108457597A CN 108457597 A CN108457597 A CN 108457597A CN 201810168010 A CN201810168010 A CN 201810168010A CN 108457597 A CN108457597 A CN 108457597A
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- Prior art keywords
- seal
- assembly
- ring
- packing
- spline
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
Abstract
The invention discloses a kind of combination sealing formula long-lives to vibrate assembly, including spline mandrel, connector, internal spline connector, outer housing, pipe rack, inner sleeve, piston ring, mandrel nut, nipple, lower contact, O-ring seal, the side of the spline mandrel is sequentially connected downwards connector, internal spline connector, lower contact, lower end on the inside of spline mandrel is sequentially connected pipe rack and mandrel nut, nipple is mounted on outer housing lower end, it is equipped with piston ring in pipe rack outer circle, piston packing two is serially connected in pipe rack optical axis section, piston packing one is sleeved on the endoporus of inner sleeve, and inner sleeve is equipped between piston ring and outer housing, inner sleeve coordinates with outer housing elastic conjunction；Spline mandrel bottom is provided with dished spring assembly, is equipped with one section of seal groove in upper end of joint, combination sealing assembly is installed in seal groove.The present invention uses dual-seal, improves the sealing performance and wear-resisting property of tool, new-type sealing structure has the characteristics that the operation is stable, long lifespan.
Description
Technical field
The present invention relates to a kind of combination sealing formula long-life oscillation tools of oil gas field, and it is horizontal especially to exploit shale gas
A kind of combination sealing formula long-life of well vibrates assembly.
Background technology
With the continuous development of drilling technology, the well type of some special operation conditions and the drilling of oil reservoir are solved, and consider water
The larger reason of the drainage area of horizontal well and extended reach well, application of the hydroscillator in oil field development are increasingly wider
It is general.Relative to other drag reduction technologies, hydroscillator is introduced in underground drill stem, drill string can be made to generate certain frequency and amplitude
Periodic vibration makes the quiet frictional resistance during feeding become dynamic frictional resistance, frictional resistance, raising machine during reducing feeding
Tool drilling speed, the horizontal drilling depth of increase and shortening drilling period aspect have a clear superiority.It reduces frictional resistance, reduce the card in drilling well
Brill accident, it is current drilling engineering problem in the urgent need to address, field practice table to increase dynamic bit pressure, improve conventional drilling efficiency
Bright, periodicity axial vibration appropriate to drill string can effectively reduce the frictional resistance between drilling tool and the borehole wall in drilling process, carry
The efficiency of breaking rock of high conventional drilling reduces conventional drilling lock of tool drilling, and increases and move bit pressure, is suitable for extended reach well, Directional Drilling
A variety of drilling modes such as well, horizontal drilling, vertical drilling, coiled tubing drilling.
The requirement of such as applicable elements and limited by other factors, relative to other drag reduction technologies, in underground drill stem
Hydroscillator is introduced, drill string can be made to generate the periodic vibration of certain frequency and amplitude, make during feeding quiet rubs
For resistive at dynamic frictional resistance, the frictional resistance, raising rate of penetration, the horizontal drilling depth of increase and shortening drilling during reducing feeding are all
It has a clear superiority in terms of phase, at nearly drill bit, coordinates well dynamic tool, realize antifriction function, but make in recent years
Used various forms of hydroscillators, wherein compare the axial hydroscillator for being widely used that national oil well production, but
It is such oscillator during the higher-order of oscillation, the seal combination at disc spring oscillation short circuit position wears leakage frequent occurrence, needs
It often makes a trip and replaces short circuit sealing element, and repair demolition each time is all very time-consuming arduously based on these defects, is based on these
Defect, it is contemplated that the above situation, this patent design a kind of combination sealing formula long-life oscillation assembly, and the invention is to original oscillation
The improvement of assembly sealing structure combines the operation principle of high-pressure plunger pump reciprocation sealing structure, the new-type sealing structure of remodeling
Have the characteristics that the operation is stable, long lifespan, enhance oscillation assembly service life, and can effectively solve oscillation assembly wearability and
Leakproofness problem, drilling well frictional resistance is larger, the few problem of drilling depth.Structure of the invention is simple, and processing cost is low, and operation is easy to maintenance,
It is adaptable, have the advantages that safe and reliable.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is：In order to effectively solve oscillation assembly wearability and leakproofness problem, this
Invention is related to a kind of combination sealing formula long-life oscillation assembly, combines the operation principle of high-pressure plunger pump reciprocation sealing structure,
O-ring seal is combined with rectangular seal, in conjunction with the dual-seal that folder cloth packing wear-resistant seal combines, considerably improves tool
Sealing performance and wear-resisting property.The new-type sealing structure of remodeling has the characteristics that the operation is stable, long lifespan.
The technical scheme is that：
A kind of combination sealing formula long-life oscillation assembly, including spline mandrel, connector, internal spline connector, outer housing, comb
Frame, inner sleeve, piston ring, mandrel nut, nipple, lower contact, O-ring seal, the O-ring seal are divided into O-ring seal
One, O-ring seal two, O-ring seal three, O-ring seal four, O-ring seal five, O-ring seal six, O-ring seal seven；
The side of the spline mandrel is sequentially connected downwards connector, internal spline connector, lower contact, on the inside of spline mandrel
Lower end is sequentially connected pipe rack and mandrel nut, and nipple is mounted on outer housing lower end, and O-ring seal is equipped on the upside of nipple
Five, O-ring seal six, O-ring seal seven on the downside of nipple are equipped with O-ring seal four between mandrel nut and pipe rack,
It is equipped with piston ring in pipe rack outer circle, piston ring also carries piston packing one and piston packing two, and piston packing two is gone here and there
It is connected on pipe rack optical axis section, piston packing one is sleeved on the endoporus of inner sleeve, and equipped with interior between piston ring and outer housing
Sleeve, inner sleeve coordinate with outer housing elastic conjunction；It is equipped with a circle step in spline mandrel bottom, one section of ring is formed below step
Sky, annular space are provided with dished spring assembly, the dished spring assembly is by pairs of between outer housing and spline mandrel in this section of annular space
Disc spring assembles, and the left end of dished spring assembly is compressed by multiple key core axis step end face, and right end is pressed on the large end face of pipe rack,
Spline mandrel bottom is equipped with straight thread, and by straight screw connection pipe rack, pipe rack inner face is equipped with O-ring seal three,
Upper end of joint is equipped with one section of seal groove, and combination sealing assembly is equipped in seal groove.
Further, the combination sealing assembly includes screw, seal joint, O-ring seal eight, rectangular seal, V-type
Cloth packing one, V-type folder cloth packing two, drum type packing are pressed from both sides, the O-ring seal of combination sealing assembly combines with rectangular seal, pacifies
In the annular groove for filling seal joint, seal joint is by Cu alloy material machine-shaping, O-ring seal eight, rectangular seal, drum type
Packing is by nitrile rubber machine-shaping, and V-type presss from both sides cloth packing one, V-type presss from both sides cloth packing two by folder cloth nitrile rubber machine-shaping.
Further, seal joint is fixed on the end face of connector by screw, eight He of O-ring seal of combination sealing assembly
It is mounted in the annular groove of seal joint processing after rectangular seal combination, V-type presss from both sides cloth packing one, V-type folder cloth packing two, drum type
One end is compressed by seal joint after packing cooperation, and the other end leans against on the interior step end face of connector.
Further, the V-type folder cloth packing one of combination sealing assembly and the V-type mouth of V-type folder cloth packing two open, and combination is close
The inner ring for sealing assembly generates interference fit with the axis surface of spline mandrel always.
Further, when the seal joint of combination sealing assembly and spline mandrel high-frequency reciprocating move, seal joint is by copper
Alloy is processed to be formed, and ensures wear-resisting property between the two.
Further, the piston ring is made of copper alloy, and the piston packing two and the piston packing one are
Interior pass rectangular seal can generate continuous phase by nitrile rubber mold machine-shaping, between piston ring and spline mandrel to fortune
It is dynamic.
Further, it is filled with silicone oil between the outer housing inside the dished spring assembly, internal spline upper end of joint is set
There are oil filler point, outer housing lower end to be machined with peep hole.
Further, spline mandrel surface passes through chromium plating process, surface accuracy Ra1.6, spline mandrel and internal spline
Coordinate for spline between connector.
The beneficial effects of the invention are as follows：
(1), to the improvement of original oscillation assembly sealing structure, combination sealing assembly is added in a device, combines high pressure
The new-type sealing structure of the operation principle of plunger pump reciprocation sealing structure, remodeling has the characteristics that the operation is stable, long lifespan, enhancing
Service life of oscillation assembly；
(2), when vibrating assembly action, the V-type mouth of the folder cloth packing of combination sealing opens, the packing component of seal combination
Always interference fit is generated with spline mandrel surface, is close to spline mandrel, can effectively prevent external fluid and enter in dished spring assembly
Portion, in order to avoid damage dished spring assembly；
(3), when the seal joint of the copper alloy of piston ring and spline mandrel high-frequency reciprocating move, copper alloy ensures the two
Between wear-resisting property.
Description of the drawings
Fig. 1 is a kind of general profile structural schematic diagram of combination sealing formula long-life oscillation assembly；
Fig. 2 is combination sealing assembly structure chart；
Fig. 3 is the appearance three-dimensional structure view of spline mandrel；
Fig. 4 is the section three-dimensional structure view of internal spline connector.
In figure：
1. spline mandrel, 2. combination sealing assemblies, 3. connectors, 4.O types sealing ring one, 5. oil filler points, 6. internal spline connectors,
7.O types sealing ring two, 8. outer housings, 9. dished spring assemblies, 10. peep holes, 11. pipe racks, 12.O types sealing ring three, 13. inner sleeves
Cylinder, 14. piston rings, 15. piston packings one, 16. piston packings two, 17.O types sealing ring four, 18. mandrel nuts, 19.O
Type sealing ring five, 20. nipples, 21.O types sealing ring six, 22.O types sealing ring seven, 23. lower contacts；
B1. screw, B2. seal joints, B3.O types sealing ring eight, B4. rectangular seals, B5.V types press from both sides cloth packing one,
B6.V types press from both sides cloth packing two, B7. drum type packings.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of combination sealing formula long-life vibrates assembly, on the whole, mainly by spline mandrel 1,
Combination sealing assembly 2, connector 3, O-ring seal 1, oil filler point 5, internal spline connector 6, O-ring seal 27, outer housing 8, dish
Spring component 9, peep hole 10, pipe rack 11, O-ring seal 3 12, inner sleeve 13, piston ring 14, piston packing 1, piston
Sealing ring 2 16, O-ring seal 4 17, mandrel nut 18, O-ring seal 5 19, nipple 20 are O-ring seal 6 21, O-shaped
Sealing ring 7 22, lower contact 23 form, and dished spring assembly 9 is assembled by pairs of disc spring, and the left end of dished spring assembly 9 is by spline mandrel 1
Step end face compresses, and right end is pressed on the large end face of pipe rack 10, pipe rack 10 and 1 straight screw connection of spline mandrel, comb
11 inner face of frame is equipped with O-ring seal 3 12, and nipple 20 is mounted on 8 other end endoporus front end of outer housing, 8 one end of outer housing
It is connect with 6 tapered thread of internal spline connector, the other end of outer housing 8 is connect with 23 tapered thread of lower contact power short circuit, piston
Sealing ring 2 16 is serially connected in 11 optical axis section of pipe rack, and piston packing 1 is sleeved on 13 endoporus of inner sleeve, inner sleeve 13 with it is outer
Coordinated using elastic conjunction between shell 8, the piston ring 14 of combination sealing assembly 2 is made of copper alloy, piston packing two
16 and piston packing 1 be interior pass rectangular seal, by nitrile rubber mold machine-shaping, piston ring 14, with multiple key core
Continuous relative motion can be generated between axis 1, and silicon is filled between 9 inside of dished spring assembly of combination sealing assembly 2 and outer housing 8
Oil, 8 left and right ends of outer housing are machined with oil filler point 5 and peep hole 10, and chromium plating process is passed through on 1 surface of spline mandrel, ensures Ra1.6
Precision, between spline mandrel 1 and internal spline connector 6 using spline coordinate.
As shown in Fig. 2, the combination sealing assembly 3 of the oscillation assembly by screw B1, seal joint B2, eight B3 of O-ring seal,
Rectangular seal B4, one B5 of V-type folder cloth packing, two B6 of V-type folder cloth packing, drum type packing B7 compositions, the O of combination sealing assembly 3
Eight B3 of type sealing ring is combined with rectangular seal B4, and in the annular groove of installation seal joint B2, seal joint B2 is by copper alloy material
Expect machine-shaping, by nitrile rubber machine-shaping, V-type presss from both sides cloth disk by eight B3 of O-ring seal, rectangular seal B4, drum type packing B7
By folder cloth nitrile rubber machine-shaping, seal joint B2 is fixed on connector 3 by screw B1 by one B5 of root, two B6 of V-type folder cloth packing
On end face, seal joint B3 processing is mounted on after eight B3 of O-ring seal of combination sealing assembly and rectangular seal B4 combinations
In annular groove, one end is pressed by seal joint B2 after one B5 of V-type folder cloth packing, two B6 of V-type folder cloth packing, the B7 cooperations of drum type packing
Tightly, the other end leans against on the interior step end face of connector 3, and one B5 of V-type folder cloth packing and V-type of combination sealing assembly 2 press from both sides cloth packing
The V-type mouth of two B6 opens, and the inner ring of combination sealing assembly 2 generates interference fit with the axis surface of spline mandrel 1 always, and combination is close
When sealing seal joint B2 and the movement of 1 high-frequency reciprocating of spline mandrel of assembly 2, seal joint B2 is processed by copper alloy to be formed, and is ensured
Wear-resisting property between the two.
When combination sealing formula long-life provided by the present invention oscillation assembly work, 23 endoporus fluid of lower contact will produce
Pulsed differential pushes piston ring 14 to be axially moved, and the hydraulic oil inside dished spring assembly 9 can occur intermittently to compress and expand, and push away
Dynamic dished spring assembly 9 is deformed, and the elastic force for deforming generation is transmitted to spline mandrel 1, and spline mandrel 1 is in inner spline sleeve 6
Backhaul it is dynamic, drive drill string axially vibrate, can achieve the purpose that antifriction.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention
To any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of combination sealing formula long-life vibrates assembly, it is characterised in that：Including spline mandrel (1), connector (3), internal spline
Connector (6), outer housing (8), pipe rack (11), inner sleeve (13), piston ring (14), mandrel nut (18), nipple (20), under
Connector (23), O-ring seal, the O-ring seal are divided into O-ring seal one (4), O-ring seal two (7), O-ring seal three
(12), O-ring seal four (17), O-ring seal five (19), O-ring seal six (21), O-ring seal seven (22)；
The side of the spline mandrel (1) is sequentially connected downwards connector (3), internal spline connector (6), lower contact (23), in spline
Lower end on the inside of mandrel (1) is sequentially connected pipe rack (11) and mandrel nut (18), and nipple (20) is mounted under outer housing (8)
End is equipped with O-ring seal five (19) on the upside of the nipple (20), the O-ring seal six (21), O-shaped close on the downside of nipple (20)
Seal seven (22) is equipped with O-ring seal four (17), in pipe rack (11) outer circle between mandrel nut (18) and pipe rack (11)
Equipped with piston ring (14), piston ring (14) also carries piston packing one (15) and piston packing two (16), piston packing
Two (16) are serially connected in pipe rack (11) optical axis section, and piston packing one (15) is sleeved on the endoporus of inner sleeve (13), and in piston
Inner sleeve (13) is equipped between ring (14) and outer housing (8), inner sleeve (13) coordinates with outer housing (8) elastic conjunction；In spline
Mandrel (1) bottom is equipped with a circle step, forms one section of annular space below step, annular space be located at outer housing (8) and spline mandrel (1) it
Between, dished spring assembly (9) is provided in this section of annular space, the dished spring assembly (9) is assembled by pairs of disc spring, dished spring assembly (9)
Left end is compressed by spline mandrel (1) step end face, and right end is pressed on the large end face of pipe rack (10), in spline mandrel (1)
Bottom is equipped with straight thread, and by straight screw connection pipe rack (10), pipe rack (11) inner face is equipped with O-ring seal three
(12), it is equipped with one section of seal groove in upper end of joint, combination sealing assembly (2) is installed in seal groove.
2. a kind of combination sealing formula long-life according to claim 1 vibrates assembly, it is characterised in that：The combination sealing
Assembly (2) includes screw (B1), seal joint (B2), O-ring seal eight (B3), rectangular seal (B4), V-type folder cloth packing one
(B5), V-type folder cloth packing two (B6), drum type packing (B7), the O-ring seal (B3) and rectangular seal of combination sealing assembly (2)
It encloses (B4) to combine, in the annular groove of installation seal joint (B2), seal joint (B2) is O-shaped close by Cu alloy material machine-shaping
By nitrile rubber machine-shaping, V-type presss from both sides cloth packing one (B5), V for seal eight (B3), rectangular seal (B4), drum type packing (B7)
Type presss from both sides cloth packing two (B6) by folder cloth nitrile rubber machine-shaping.
3. a kind of combination sealing formula long-life according to claim 2 vibrates assembly, it is characterised in that：Screw (B1) will be close
Envelope pressure ring (B2) is fixed on the end face of connector (3), the O-ring seal eight (B3) and rectangular seal (B4) of combination sealing assembly
It is mounted in the annular groove of seal joint (B3) processing after combination, V-type presss from both sides cloth packing one (B5), V-type folder cloth packing two (B6), drum
One end is compressed by seal joint (B2) after type packing (B7) cooperation, and the other end leans against on the interior step end face of connector (3).
4. a kind of combination sealing formula long-life according to claim 3 vibrates assembly, it is characterised in that：Combination sealing assembly
(2) the V-type mouth of V-type folder cloth packing one (B5) and V-type folder cloth packing two (B6) opens, and the inner ring of combination sealing assembly (2) begins
Eventually interference fit is generated with the axis surface of spline mandrel (1).
5. a kind of combination sealing formula long-life according to claim 4 vibrates assembly, it is characterised in that：Combination sealing assembly
(2) when seal joint (B2) and spline mandrel (1) high-frequency reciprocating moves, seal joint (B2) is processed by copper alloy to be formed, and is protected
The wear-resisting property of card between the two.
6. a kind of combination sealing formula long-life according to claim 1 vibrates assembly, it is characterised in that：The piston ring
(14) it is made of copper alloy, the piston packing two (16) and the piston packing one (15) are interior pass rectangular seal
Circle, by nitrile rubber mold machine-shaping, continuous relative motion can be generated between piston ring (14) and spline mandrel (1).
7. a kind of combination sealing formula long-life according to claim 1 vibrates assembly, it is characterised in that：The dished spring assembly
(9) silicone oil is filled between inside and the outer housing (8), internal spline connector (6) upper end is equipped with oil filler point (5), outer housing (8)
Lower end is machined with peep hole (10).
8. a kind of combination sealing formula long-life according to claim 1 vibrates assembly, it is characterised in that：Spline mandrel (1)
Chromium plating process is passed through on surface, and surface accuracy Ra1.6 matches between spline mandrel (1) and internal spline connector (6) for spline
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168010.4A CN108457597A (en) | 2018-02-28 | 2018-02-28 | A kind of combination sealing formula long-life oscillation assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168010.4A CN108457597A (en) | 2018-02-28 | 2018-02-28 | A kind of combination sealing formula long-life oscillation assembly |
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| Publication Number | Publication Date |
|---|---|
| CN108457597A true CN108457597A (en) | 2018-08-28 |
Family
ID=63219630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810168010.4A Pending CN108457597A (en) | 2018-02-28 | 2018-02-28 | A kind of combination sealing formula long-life oscillation assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555484A (en) * | 2019-01-21 | 2019-04-02 | 杰瑞能源服务有限公司 | One kind wearing cable hydroscillator |
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| CN104712279A (en) * | 2015-03-03 | 2015-06-17 | 四机赛瓦石油钻采设备有限公司 | Coiled tubing hydraulic double-way jar |
| CN105239929A (en) * | 2015-11-24 | 2016-01-13 | 西南石油大学 | Downhole tool for achieving efficient rock breaking through spin vibration |
| CN205840768U (en) * | 2016-06-06 | 2016-12-28 | 西南石油大学 | Area change is utilized to realize the drilling tool of impact of collision |
| CN107631007A (en) * | 2017-09-04 | 2018-01-26 | 西南石油大学 | A kind of screw rod drilling tool seal transmission shaft assembly |
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2018
- 2018-02-28 CN CN201810168010.4A patent/CN108457597A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2323128Y (en) * | 1998-02-17 | 1999-06-09 | 杜晓瑞 | Borehole combined drilling tool for superhigh pressure jet drilling |
| CN103742076A (en) * | 2014-01-02 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Axial vibrator |
| CN104712279A (en) * | 2015-03-03 | 2015-06-17 | 四机赛瓦石油钻采设备有限公司 | Coiled tubing hydraulic double-way jar |
| CN105239929A (en) * | 2015-11-24 | 2016-01-13 | 西南石油大学 | Downhole tool for achieving efficient rock breaking through spin vibration |
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| CN107631007A (en) * | 2017-09-04 | 2018-01-26 | 西南石油大学 | A kind of screw rod drilling tool seal transmission shaft assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109555484A (en) * | 2019-01-21 | 2019-04-02 | 杰瑞能源服务有限公司 | One kind wearing cable hydroscillator |
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Application publication date: 20180828 |