CN201963216U - High-temperature resistant hydraulic two-way shock absorber - Google Patents
High-temperature resistant hydraulic two-way shock absorber Download PDFInfo
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- CN201963216U CN201963216U CN2011200357203U CN201120035720U CN201963216U CN 201963216 U CN201963216 U CN 201963216U CN 2011200357203 U CN2011200357203 U CN 2011200357203U CN 201120035720 U CN201120035720 U CN 201120035720U CN 201963216 U CN201963216 U CN 201963216U
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Abstract
The utility model relates to a high-temperature resistant hydraulic two-way shock absorber comprising an inner shaft component, a piston component and an outer tube component; the inner shaft component comprises a mandrel, a washing pipe body and a washing pipe head which are sequentially connected; the middle part of the inner shaft component is sleeved with the piston component; the piston component comprises a spline shaft, a lock plug, a steel ball, a seal body, a seal sleeve and a gland which are sequentially connected; the spline shaft is connected with the mandrel through a thread; the outer side of the inner shaft component is sleeved with the outer tube component, and the outer tube component comprises a seal connector, a spline tube, an oil cylinder and a lower connector which are sequentially connected; the spline tube and the spline shaft are connected through a spline; seal components are respectively arranged between the inner shaft component, the piston component and the outer tube component; a damping chamber is arranged between the piston component and the outer tube component, and wear-resistant hydraulic oil is filled in the damping chamber; and the lower side of the piston component is provided with a working chamber, and silicone oil is filled in the working chamber. The use temperature of the high-temperature resistant hydraulic two-way shock absorber can reach 180DEG C, and up to 150Mpa of pressure can be resisted.
Description
Technical field
The utility model relates to a kind of high temperature resistant hydraulic pressure double-acting shock absorber, mainly is made up of the liquid spring of interior shaft assembly, piston component, outer barrel component, work chamber inside and damping chamber etc.It can slow down or eliminate the vertical and circumferentially vibrations of drill string simultaneously, keeps normal the pressure of the drill and moment of torsion, thereby reduces the vibration limits of drill bit, drilling tool and ground installation, can realize improving drilling speed and the purpose that reduces drilling cost.
Background technology
In Process of Oil Well Drilling, usually use damper to slow down the shock and vibration that produce in the roller bit cutting process, because the hydraulic bidirectional damper can slow down or eliminate the vertical and rotational vibration of drilling tool simultaneously, and what damper element adopted is a kind of synthetic hydraulic fluid-silicone oil, the restriction of no fatigue limit, therefore this damper obtains to use widely.Chinese patent 200920099647.9 discloses a kind of hydraulic bidirectional damper, comprise top connection, spline tube, mandrel and enhancing ring, described top connection and spline tube are provided with the lock ball disconnecting prevention structure in the junction, the lock ball disconnecting prevention structure by be located on the inside and outside wall of spline tube and top connection respectively and corresponding semicircle annular groove and the locking ball form, the spline tube barrel is provided with the filler opening that is connected with semicircle annular groove, be bolted with plug in the filler opening, the locking ball is filled in the relative two halves circular ring slot by filler opening.It has radially supporting capacity strong, connect reliable advantage.
Along with constantly development and ripe day by day of drilling technology, deep-well and ultradeep well are more and more, and old well originally also is faced with secondary recovery.But when the damper that uses was in the damping state at present, hydraulic cavities pressure was very big, and hermetically-sealed construction is very big to the influence in application life of instrument.On the other hand, with the degree of depth increase of drilling well, bottom hole temperature (BHT) rises, and average formation temperature gradient is 30 ℃/1000m, and some regional high temperature well degree of depth temperature when 3000m just reaches 160 ℃.The temperature rising in shaft bottom can cause silicone oil volume expansion, interior can the increase, causes the instrument elastic stiffness to increase, and makes the damping effect of instrument have a greatly reduced quality.Simultaneously, the temperature in shaft bottom exerts an influence to the encapsulant of hermetically-sealed construction again.The ultimate-use (limiting service) temperature of the damper that uses is 120 ℃ at present.The use of existing damper just is restricted.So, need to propose a kind of high temperature resistant hydraulic pressure double-acting shock absorber.
Summary of the invention
The purpose of this utility model is to provide a kind of high temperature resistant hydraulic pressure double-acting shock absorber, mainly is made up of the liquid spring of interior shaft assembly, piston component, outer barrel component, work chamber and damping chamber etc.It can slow down or eliminate the vertical and circumferentially vibrations of drill string simultaneously in drillng operation, keep normal the pressure of the drill and moment of torsion.Maximum operation (service) temperature of the present utility model can reach 180 ℃, and the withstand voltage 150Mpa that reaches can satisfy the instructions for use of deep-well and high temperature well.
The purpose of this utility model is realized by following technical proposals: a kind of high temperature resistant hydraulic pressure double-acting shock absorber, comprise interior shaft assembly, piston component and outer barrel component, and described interior shaft assembly is linked in sequence by mandrel, washing pipe body and washing pipe head and forms; Described mandrel upper end is provided with top connection; Suit described piston component in shaft assembly middle part in described, described piston component is stifled by splined shaft, lock, steel ball, seal, sealing shroud and pressure cap are linked in sequence forms; Splined shaft in the described piston component with described in be threaded between the mandrel in the shaft assembly; The described outer barrel component of shaft assembly outside suit in described, described outer barrel component is linked in sequence by seal nipple, spline tube, oil cylinder and lower contact and forms; Spline is connected between the splined shaft in spline tube in the described outer barrel component and the described piston component; Be respectively equipped with black box between shaft assembly, described piston component and the described outer barrel component in described; Be provided with the damping chamber between described piston component and the described outer barrel component, described damping cavity chamber interior filling wear-resisting hydraulic oil; Described piston component bottom is provided with work chamber, the inner filling silicon oil of described work chamber.
The utility model compared with prior art has following advantage:
1, because black box of the present utility model is provided with J type sliding ring type combination sealing, and encapsulant is selected FBR or FBR+PTFE material for use, improves application life and the sealing performance of black box under high-temperature and high-pressure conditions.
2, the utility model is provided with two sealed chamber: i.e. work chamber and damping chamber; Liquid in the work chamber can absorb the vibration energy of drill bit and drill string, and the non-compressed liquid high velocity stream in the chamber of damping is simultaneously crossed the annular space damping mechanism, produces a large amount of frictional heat, consumes part vibrations and impact energy; Make the utility model in deep-well and high temperature well, have good damping effect.
3, reach 1000 hours application life of the present utility model.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation (the A portion enlarged drawing of Fig. 1) of damping chamber;
Fig. 3 is the structural representation (the B portion enlarged drawing of Fig. 1) of work chamber.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, high temperature resistant hydraulic pressure double-acting shock absorber of the present utility model comprises interior shaft assembly, piston component and outer barrel component; Shaft assembly is linked in sequence by mandrel 1, washing pipe body 24 and washing pipe head 25 and forms in described; Described mandrel upper end is provided with top connection; Suit described piston component in shaft assembly middle part in described, described piston component is stifled 13 by splined shaft 11, lock, steel ball 14, seal 15, sealing shroud 21 and pressure cap 22 are linked in sequence forms; Splined shaft in the described piston component with described in be threaded between the mandrel in the shaft assembly; The described outer barrel component of shaft assembly outside suit in described, described outer barrel component is linked in sequence by seal nipple 7, spline tube 12, oil cylinder 23 and lower contact 35 and forms; Spline is connected between the spline tube of described outer barrel component and the splined shaft of described piston component; Be respectively equipped with black box between shaft assembly, described piston component and the described outer barrel component in described; Be provided with damping chamber 65 between described piston component and the described outer barrel component, described damping cavity chamber interior filling wear-resisting hydraulic oil; Described piston component bottom is provided with work chamber 66, the inner filling silicon oil of described work chamber.
Referring to Fig. 1, in the present embodiment, the whole one-tenth of described interior shaft assembly tubular, the center is the water delivery duct, can carry drilling fluid to drill bit.Interior shaft assembly is linked in sequence by mandrel 1, washing pipe body 24 and washing pipe head 25 and forms; Described mandrel upper end is provided with top connection; Described top connection center is provided with screwed hole, is used for and being threaded of drill string.In order to bear enough loads that draws, presses, described top connection and mandrel one process.Described washing pipe body is a thin cylinder, and described mandrel bottom is provided with internal thread, and described washing pipe body upper end is provided with external screw thread, and described mandrel is threaded with the washing pipe body.The junction of described mandrel and described washing pipe body is provided with back-up ring and O-ring seals.Referring to Fig. 3, described washing pipe body 24 lower ends are provided with external screw thread, and described washing pipe head 25 upper ends are provided with internal thread, and described washing pipe body is connected with described washing pipe head thread.The junction of described washing pipe body and described washing pipe head is provided with back-up ring and O-ring seals.
Referring to Fig. 1, Fig. 2, in the present embodiment, described in the described piston component of shaft assembly middle part suit, described piston component is stifled 13 by splined shaft 11, lock, steel ball 14, seal 15, sealing shroud 21 and pressure cap 22 are linked in sequence forms; Splined shaft 11 in the described piston component with described in be connected by nine big helical pitch left hand threads between the mandrel 1 in the shaft assembly.
Referring to Fig. 1, Fig. 2, in the present embodiment, the described outer barrel component of described interior shaft assembly outside suit, described outer barrel component is threaded in proper order by seal nipple, spline tube, oil cylinder and lower contact and forms; Seal nipple in the described outer barrel component, spline tube, oil cylinder and lower contact are connected by trapezoidal thread or extraordinary taper thread.The junction of described seal nipple 7, spline tube 12, oil cylinder 23 and lower contact 35 is respectively equipped with back-up ring and O-ring seals.Spline tube in the described outer barrel component is provided with internal spline, and the splined shaft in the described piston component is provided with external splines, and spline is connected between the splined shaft 11 in the spline tube 12 in the described outer barrel component and the described piston component.
Referring to Fig. 2, Fig. 3, in the present embodiment, be respectively equipped with black box between described interior shaft assembly, described piston component and the described outer barrel component; Described black box is provided with four: be provided with black box 201 between described seal nipple 7 and the described mandrel 1, black box 201 by scrape daughter, back-up ring, axle with J-shaped sliding ring type combination sealing, spacer ring, O-ring seals, spool form with dust ring.The structure of relevant J-shaped sliding ring type combination sealing belongs to the category of prior art, also can be referring to disclosed content in the Chinese patent 02201840.9.J-shaped sliding ring type combination sealing in the present embodiment selects that FBR(is high temperature resistant for use, the fire proofing of anti-the ablation)+particular fillers PTFE(polytetrafluoroethylene (PTFE)) material.Be provided with black box 202 between described washing pipe head 25 and the described lower contact 35, black box 202 by scrape daughter, back-up ring, axle with J-shaped sliding ring type combination sealing, spacer ring, O-ring seals, spool form with dust ring.Described black box 201 and described black box 202 are the black box between interior shaft assembly and the outer barrel component.Be provided with black box 203 between described seal 15 and the described oil cylinder 23, described black box 203 is made up of with J-shaped sliding ring type combination sealing, O-ring seals, back-up ring spacer, spacer ring, hole.Described black box 203 is the black box between piston component and the outer barrel component.Be provided with black box 204 between described sealing shroud 21 and the described washing pipe body 24, described black box 204 is made up of with J-shaped sliding ring type combination sealing spacer ring, spacer, O-ring seals, back-up ring, axle.Described black box 204 is the black box between interior shaft assembly and the piston component.Four black boies are separated into two sealed chamber with inside of the present utility model, are work chamber 66 between black box 202 and the black box 204, the inner filling silicon oil of work chamber.Be damping chamber 65 between black box 201 and the black box 203, the damping cavity chamber interior is filled the L-HM32 anti-wear hydraulic oil.Be positioned at the middle part of damping chamber, form the annular space damping mechanism of damping chamber by spline on the splined shaft and the spline on the spline tube.The top of annular space damping mechanism is secondary damping chamber 651, and the bottom of annular space damping mechanism is main damping chamber.Be equipped with spacer ring in above-mentioned four black boies, oil storage tank is arranged on the spacer ring, packing lubrication oil in the oil storage tank.
Referring to Fig. 1, Fig. 2, in the present embodiment, described in mandrel in the shaft assembly be provided with anti-attrition mechanism, described anti-attrition mechanism is arranged in the lower end of the seal nipple 7 of described outer barrel component.Described anti-attrition mechanism is made up of fluting packing ring 8, anti-attrition sheet 9, semicircle back-up ring 10.Described semicircle back-up ring is installed in the collar groove of mandrel 1, and described anti-attrition mechanism is by the axial limiting of semicircle back-up ring along mandrel.
In the present embodiment, constitute vertical damping by the annular space damping mechanism of mandrel, piston component, damping chamber and the silicone oil of work chamber inside parts such as (may also be referred to as and be liquid spring).Its operating principle mainly is to utilize the liquid spring of work chamber inside to produce elastic deformation under pressure to absorb or discharge drill bit and drill string vibration energy.When liquid spring the compression or expansion process in, the relative outer barrel component of interior shaft assembly is done and is vertically moved.Simultaneously, the liquid stream high velocity stream of the non-compressed liquid that main damping cavity is indoor is crossed the annular space damping mechanism and is entered secondary damping chamber (the liquid stream high velocity stream of the non-compressed liquid that perhaps secondary damping cavity is indoor is crossed the annular space damping mechanism and entered main damping chamber), and produce a large amount of frictional heat, consume partly vibrations and impact energy.Therefore, the vertical damping vertical vibrations and the impact energy that can absorb or slow down drilling tool.In order to eliminate or to slow down the drill string circumferential vibrations and the shock loading in when work, designed the piston changement, it is to be connected with piston component by rectangular spline is secondary by spline tube, the piston component endoporus connects with mandrel by trapezoid spiral is secondary, it is vertical component of work chamber in the moment internal conversion that such one group of mechanism will make torsional shaking and shock loading, thereby keeps more constant moment of torsion.
In order further to improve damping effect of the present utility model, the elastic stiffness of described high temperature resistant hydraulic pressure double-acting shock absorber is 35kN/cm.Maximum operation (service) temperature of the present utility model can reach 180 ℃, the withstand voltage 150Mpa that reaches.
Claims (4)
1. high temperature resistant hydraulic pressure double-acting shock absorber is characterized in that: comprise interior shaft assembly, piston component and outer barrel component, described in shaft assembly be linked in sequence by mandrel (1), washing pipe body (24) and washing pipe head (25) and form; Described mandrel upper end is provided with top connection; The described piston component of shaft assembly middle part suit in described, described piston component are linked in sequence by splined shaft (11), lock stifled (13), steel ball (14), seal (15), sealing shroud (21) and pressure cap (22) and form; Splined shaft in the described piston component with described in be threaded between the mandrel in the shaft assembly; The described outer barrel component of shaft assembly outside suit in described, described outer barrel component is linked in sequence by seal nipple (7), spline tube (12), oil cylinder (23) and lower contact (35) and forms; Spline is connected between the splined shaft in spline tube in the described outer barrel component and the described piston component; Be respectively equipped with black box between shaft assembly, described piston component and the described outer barrel component in described; Be provided with damping chamber (65) between described piston component and the described outer barrel component, described damping cavity chamber interior filling wear-resisting hydraulic oil; Described piston component bottom is provided with work chamber (66), the inner filling silicon oil of described work chamber.
2. high temperature resistant hydraulic pressure double-acting shock absorber according to claim 1 is characterized in that: the mandrel in described in the shaft assembly is provided with anti-attrition mechanism, and described anti-attrition mechanism is made up of fluting packing ring, anti-attrition sheet, semicircle back-up ring.
3. high temperature resistant hydraulic pressure double-acting shock absorber according to claim 2 is characterized in that: the splined shaft in the described piston component with described in be connected by nine big helical pitch left hand threads between the mandrel in the shaft assembly.
4. high temperature resistant hydraulic pressure double-acting shock absorber according to claim 1, it is characterized in that: the seal nipple in the described outer barrel component, spline tube, oil cylinder and lower contact are connected by trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357203U CN201963216U (en) | 2011-02-10 | 2011-02-10 | High-temperature resistant hydraulic two-way shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357203U CN201963216U (en) | 2011-02-10 | 2011-02-10 | High-temperature resistant hydraulic two-way shock absorber |
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| CN201963216U true CN201963216U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200357203U Expired - Fee Related CN201963216U (en) | 2011-02-10 | 2011-02-10 | High-temperature resistant hydraulic two-way shock absorber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775004A (en) * | 2012-11-27 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Method for preventing bidirectional hydraulic shock absorber from being released and shock absorber |
| CN104358526A (en) * | 2014-10-30 | 2015-02-18 | 郑州神利达钻采设备有限公司 | Shock absorber with retainer, for downhole tool |
| CN105909186A (en) * | 2016-04-29 | 2016-08-31 | 中石化石油工程机械有限公司研究院 | Pressure relief type shock absorber for drill stems |
| RU2749705C1 (en) * | 2020-11-30 | 2021-06-16 | федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» | At-bit damping device |
| CN113027327A (en) * | 2021-04-08 | 2021-06-25 | 河南易发石油工程技术有限公司 | Two-way shock attenuation drilling tool pressurization instrument is used in well drilling |
-
2011
- 2011-02-10 CN CN2011200357203U patent/CN201963216U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775004A (en) * | 2012-11-27 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Method for preventing bidirectional hydraulic shock absorber from being released and shock absorber |
| CN103775004B (en) * | 2012-11-27 | 2016-03-09 | 贵州高峰石油机械股份有限公司 | Prevent bidirectional hydraulic damper from moving back method and the damper of button |
| CN104358526A (en) * | 2014-10-30 | 2015-02-18 | 郑州神利达钻采设备有限公司 | Shock absorber with retainer, for downhole tool |
| CN105909186A (en) * | 2016-04-29 | 2016-08-31 | 中石化石油工程机械有限公司研究院 | Pressure relief type shock absorber for drill stems |
| CN105909186B (en) * | 2016-04-29 | 2017-12-19 | 中石化石油机械股份有限公司研究院 | Can pressure release type drill-string shock absorbers |
| RU2749705C1 (en) * | 2020-11-30 | 2021-06-16 | федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» | At-bit damping device |
| CN113027327A (en) * | 2021-04-08 | 2021-06-25 | 河南易发石油工程技术有限公司 | Two-way shock attenuation drilling tool pressurization instrument is used in well drilling |
| CN113027327B (en) * | 2021-04-08 | 2023-08-22 | 河南易发石油工程技术有限公司 | Drilling is with two-way shock attenuation drilling tool pressurization instrument |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170727 Granted publication date: 20110907 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200727 Granted publication date: 20110907 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20180210 |