CN105781464B - Single-cylinder dual-action hydraulic drilling jar - Google Patents
Single-cylinder dual-action hydraulic drilling jar Download PDFInfo
- Publication number
- CN105781464B CN105781464B CN201610261584.7A CN201610261584A CN105781464B CN 105781464 B CN105781464 B CN 105781464B CN 201610261584 A CN201610261584 A CN 201610261584A CN 105781464 B CN105781464 B CN 105781464B
- Authority
- CN
- China
- Prior art keywords
- outer barrel
- valve
- assembly
- mandrel
- jarring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
- E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
- E21B31/1135—Jars with a hydraulic impedance mechanism, i.e. a restriction, for initially delaying escape of a restraining fluid
Abstract
The present invention relates to a kind of single-cylinder dual-action hydraulic drilling jars for solving the problems, such as bit freezing in drilling process.It can adjust the size and Orientation of jarring force at any time, improve unfreezing efficiency.Its technical solution：The bumper jar includes outer barrel assembly and mandrel assembly；Outer barrel assembly includes spline outer barrel, jarring outer barrel, upper valve outer barrel, hydraulic pressure outer barrel, lower valve outer barrel and lower union joint；Mandrel assembly includes splined mandrel, idler axle, lower spindle and lock nut；It is respectively equipped with the stifled assembly I and II of oil in spline outer barrel and upper valve outer barrel；It is equipped with sealing device I between splined mandrel and spline outer barrel, and is equipped with steel ball and steel ball supporting block on the force-trans-ferring contact surface of keyway；It is respectively equipped with upper and lower jarring pad in idler axle both sides.The spline structure with rolling element inside this bumper jar may be implemented in the low frictional resistance of axial direction that tension-torsion or pressure are turned round under operating mode and slide；Cone valve assembly with pre-sealed mechanism can realize radial positioning, reduce valve body wear, enhancing delay effect, improve jarring force.
Description
Technical field
The invention belongs to oil exploitation drilling well downhole tools, and in particular to a kind of single-cylinder dual-action fluid pressure type is with boring jarring
Device.Suitable for the complicated underground work such as straight well, directional well, horizontal well, extended reach well.
Background technology
In drilling process, since lock of tool drilling, hydraulic drilling jar are frequent occurrence for geology and human factor etc.
Solve the problems, such as a kind of special downhole tool of bit freezing.Since the advantages that easy to operate, jarring force is adjustable, is used extensively.When being hampered
When needing unfreezing, jarring force is generated at stuck point using bumper jar, stuck point is made to loosen, reaches unfreezing purpose.
Invention content
The purpose of the present invention improves unfreezing efficiency, can adjust jarring force at any time to solve the deficiency of existing bumper jar
Size and Orientation provides a kind of single-cylinder dual-action hydraulic drilling jar.
The technical solution adopted in the present invention is：A kind of single-cylinder dual-action hydraulic drilling jar, including outer barrel assembly
With the mandrel assembly being provided at its inner portion, the outer barrel assembly is to be sequentially connected spline outer barrel, jarring outer barrel, upper valve with screw thread
Outer barrel, hydraulic pressure outer barrel, lower valve outer barrel and lower union joint；The mandrel assembly be with the sequentially connected splined mandrel of screw thread, in
Between mandrel, lower spindle and lock nut；The Full hydraulic jar knocker during drilling further includes：It is stifled total that oil is provided on spline outer barrel
At I, the stifled assembly II of oil is provided on upper valve outer barrel；It is provided with sealing device I between splined mandrel and spline outer barrel, seals
Device I includes O-ring seal B and mud-scraping ring；Steel ball is equipped on the force-trans-ferring contact surface of splined mandrel and the keyway of spline outer barrel
With steel ball supporting block, the frictional resistance for transmitting torque and reduction axial movement.
Jarring pad and lower jarring pad, easy to disassemble and replacement are installed respectively at idler axle both ends.Upper valve outer barrel, under
Between valve outer barrel and lower spindle be equipped with each one of sealing device II, upper and lower sealing device II include wear ring, convex rubber ring,
Sealing ring and piston, liquid when convenient for above carrying or transfer drill string in hydraulic cylinder do not leak, and piston is arranged to floating, prevents
The pull vacuum phenomenon that hydraulic oil occurs in delay in hydraulic pressure outer barrel.
Each one of upper and lower cone valve assembly, two cone valve assembly check valve peaces are provided between hydraulic pressure outer barrel and lower spindle
It is opposite to fill direction；Upper and lower cone valve assembly includes O-ring seal D, upper and lower cone valve, spring；The conical surface difference of upper and lower cone valve assembly
It combines closely with the conical surface of upper valve outer barrel, lower valve outer barrel；It is equipped with spout hole and drain pan on upper and lower cone valve.
The present invention has following effective effect compared with prior art：
1, the spline structure with rolling element inside this bumper jar may be implemented in tension-torsion or press the axial direction turned round under operating mode is low to rub
It is anti-skid dynamic.
2, the cone valve assembly of the pre-sealed mechanism of this bumper jar band can realize radial positioning, reduce valve body wear, enhancing delay
Effect improves jarring force.
3 bumper jars use single-cylinder hydraulic chamber, convenient for assembly and to the maintenance work simultaneously of the part in its hydraulic cavities.
Description of the drawings
Fig. 1 is the structural schematic diagram of single-cylinder dual-action hydraulic drilling jar of the present invention；
Fig. 2 is Fig. 1 (A-A) sectional view in this bumper jar；
Fig. 3 is Fig. 1 (B-B) sectional view in this bumper jar
Fig. 4 is the partial enlarged view of Fig. 1 sealing devices I in this bumper jar；
Fig. 5 is the partial enlarged view of Fig. 1 sealing devices II in this bumper jar；
Fig. 6 is the enlarged drawing of Fig. 1 valve body assemblies in this bumper jar；
Fig. 7 is the three dimensional structure diagram of Fig. 6 cone valves in this bumper jar.
In figure：1- splined mandrels, 2- spline outer barrels, 3- sealing devices I, 4- oil block up assembly I, 5-O type sealing ring A, 6- shake
Hit outer barrel, the upper jarring pads of 7-, 8- idler axles, jarring pad under 9-, 10- upper valve outer barrels, under 11-1- upper sealing devices II, 11-2-
Sealing device II, 12- lower spindle, 13- oil block up assembly II, 14-1- epicone valve assembly, cone valve assembly under 14-2-, outside 15- hydraulic pressure
Cylinder, 16- lower valve outer barrels, 17- lock nuts, 18- lower union joints, 19- steel balls, 20- steel ball supporting blocks, 21- baffle rings, 22-O types are close
Seal B, 23- mud-scraping ring, 24-O type sealing ring C, 25- wear rings, 26- convex rubber rings, 27- sealing rings, 28- pistons, 29-O
Shape sealing ring D, 30-1- upper conical valve, cone valve under 30-2-, 31- springs, 32- spout holes, 33- drain pans.
Specific implementation mode
Below in conjunction with the accompanying drawings, further explaination is done to the present invention：
This single-cylinder dual-action hydraulic drilling jar comprising outer barrel assembly and the mandrel assembly to set within it,
Outer barrel assembly by screw thread be sequentially connected spline outer barrel (2), jarring outer barrel (6), upper valve outer barrel (10), hydraulic pressure outer barrel (15), under
Valve outer barrel (16) and lower union joint (18)；The mandrel assembly passes through the sequentially connected splined mandrel of screw thread (1), the intermediate heart
Axis (8), lower spindle (12) and lock nut (17)；It is respectively arranged with upper jarring pad (7) and lower shake at idler axle (8) both ends
Hit pad (9)；Sealing device I (3) is equipped between splined mandrel (1) and spline outer barrel (2)；In splined mandrel (1) and spline outer barrel
(2) steel ball (19) and steel ball supporting block (20) are equipped between the force-trans-ferring contact surface of keyway；In upper valve outer barrel (10), lower valve outer barrel
(16) sealing device II (11) is equipped between lower spindle (12)；Upper and lower cone is equipped between hydraulic pressure outer barrel (15) and lower spindle (12)
Valve assembly (14-1,14-2), two check valve installation directions are opposite；After being completed, idler axle (8) is pulled up until upper shake
The interior step that pad (7) touches jarring outer barrel (6) is hit, the stifled assembly I (4) of oil and the stifled assembly II (13) of oil are filled into wear-resistant hydraulic pressure
Oil, oil is blocked stifled, is then slowly pressed downward idler axle (8), until the step of lower spindle (12) is located at two upper and lower cone valves
Between assembly (14-1,14-2), i.e., step is located within hydraulic pressure outer barrel (15), completes single-cylinder dual-action hydraulic drilling jar
Assembling.
The operation principle of the mechanism is as follows：
When normal drilling, the torque that its drilling machine is applied to drilling tool by splined mandrel (1) is supported by steel ball (19) and steel ball
Block (20) passes to spline outer barrel (2), then by jarring outer barrel (6), upper valve outer barrel (10), hydraulic pressure outer barrel (15), lower valve outside
Cylinder (16) and its lower union joint (18), and then pass to the drilling tool that lower union joint (18) is connected.
When lock of tool drilling occurs for underground, this bumper jar uses hydraulic fluid leak damping principle, is specifically described generation jarring
The operation principle of power is as follows：
On when hitting, drill string need to be lifted upwards, the step of lower spindle (12) moves upwards and epicone valve assembly (14-1) endoporus
Contact, the step of lower spindle (12) and epicone valve assembly (14-1) endoporus are the clearance fit with sealing characteristics at this time, can be produced
The pressure that raw epicone valve assembly (14-1) male cone (strobilus masculinus) is combined with the inner conical surface of upper valve outer barrel (10), also can prevent hydraulic oil from the lower heart
Axis is revealed on (12), and hydraulic oil can only pass through from the spout hole (32) of upper conical valve (30-1) at this time, make hydraulic pressure outer barrel (15) and under
High pressure chest is formed inside valve outer barrel (16), the pressure of generation more makes the conical surface of upper conical valve (30-1) be tightly pressed against outside upper valve in turn
On the inner conical surface of cylinder (10), sealing effect is more preferable, and the energy storage of drill string is completed after high pressure chest is formed；Lower sealing device II simultaneously
(11-2) is moved upwards since lower cavity space becomes larger under the pressure of mandrel interior hydraulic pressure, and it is pull vacuum phenomenon to avoid cavity of resorption；
When the step of lower spindle (12) slow transits through the endoporus of upper conical valve (30-1), the unexpected pressure release of high pressure chest discharges the energy storage of drill string,
Drill string moment bounces back, and the step of upper jarring pad (7) collision spline outer barrel (2) is driven by mandrel assembly, is hit in completion.
When reset, by drill string slowly to decentralization, when the endoporus that the step of lower spindle (12) passes through epicone valve assembly (14-1)
When, drill string drives upper conical valve (30-1) compressed spring (31), the conical surface and upper valve outer barrel that hydraulic oil passes through upper conical valve (30-1)
(10) gap of inner conical surface, then external holes and the lower part upper conical valve (30-1) by upper conical valve (30-1) drain pan (33),
So that decentralization drill string is not generated resistance, when the step of lower spindle (12) is by epicone valve assembly (14-1), completes to reset.
Under when hitting, drill string need to be compressed downwards, the step of lower spindle (12) moves upwards and lower cone valve assembly (14-2) endoporus
Contact, the step of lower spindle (12) and lower cone valve assembly (14-2) endoporus are the clearance fit with sealing characteristics at this time, can be produced
The pressure that cone valve assembly (14-2) male cone (strobilus masculinus) is combined with the inner conical surface of lower valve outer barrel (16) is given birth to, also hydraulic oil can be prevented from the lower heart
Axis is revealed on (12), and hydraulic oil can only descend the spout hole (32) of cone valve (30-2) to pass through at this time, make hydraulic pressure outer barrel (15) and upper valve
High pressure chest is formed inside outer barrel (10), the pressure of generation more makes the conical surface of lower cone valve (30-2) be tightly pressed against lower valve outer barrel in turn
(16) on inner conical surface, sealing effect is more preferable, and the energy storage of drill string is completed after high pressure chest is formed；Upper sealing device II (11- simultaneously
1) it since lower cavity space becomes larger, is moved upwards under the pressure of mandrel interior hydraulic pressure, it is pull vacuum phenomenon to avoid cavity of resorption；Instantly
When the step of mandrel (12) slow transits through the endoporus of lower cone valve (30-2), the unexpected pressure release of high pressure chest discharges the energy storage of drill string, drill string
Moment extends, and drives lower jarring pad (9) to collide the step of jarring outer barrel (6) by mandrel assembly, is hit under completion.
Then continue to reset, then can generate jarring force upwardly or downwardly.
Claims (2)
1. single-cylinder dual-action hydraulic drilling jar, including outer barrel assembly and the mandrel assembly being provided at its inner portion, feature
It is：The outer barrel assembly is to be sequentially connected spline outer barrel (2), jarring outer barrel (6), upper valve outer barrel (10), hydraulic pressure with screw thread
Outer barrel (15), lower valve outer barrel (16) and lower union joint (18)；The mandrel assembly is to use the sequentially connected splined mandrel of screw thread
(1), idler axle (8), lower spindle (12) and lock nut (17)；It is equipped with the stifled assembly I (4) of oil in spline outer barrel (2), outside upper valve
Cylinder (10) is equipped with the stifled assembly II (13) of oil；Sealing device I (3) is equipped between splined mandrel (1) and spline outer barrel (2)；Sealing dress
It includes O-ring seal B (22) and mud-scraping ring (23) to set I (3)；In the keyway force transmission contact of splined mandrel (1) and spline outer barrel (2)
Face is equipped with steel ball (19) and steel ball supporting block (20)；Upper sealing device II is equipped between upper valve outer barrel (10) and lower spindle (12)
(11-1) is equipped with lower sealing device II (11-2) between lower valve outer barrel (16) and lower spindle (12)；Upper sealing device II (11-1)
Include wear ring (25), convex rubber ring (26), sealing ring (27) and piston (28) with lower sealing device II (11-2)；In liquid
It presses and is equipped with epicone valve assembly (14-1) between outer barrel (15) and lower spindle (12), between hydraulic pressure outer barrel (15) and lower spindle (12)
Equipped with lower cone valve assembly (14-2), the check valve in epicone valve assembly (14-1) is pacified with the check valve in lower cone valve assembly (14-2)
It is opposite to fill direction；Epicone valve assembly (14-1) includes O-ring seals D (29), upper conical valve (30-1) and spring (31), and lower cone valve is total
Include O-ring seals D (29), lower cone valve (30-2) and spring (31) at (14-2)；The conical surface of epicone valve assembly (14-1) with it is upper
The conical surface of valve outer barrel (10) is combined closely, and the conical surface of the conical surface and lower valve outer barrel (16) of lower cone valve assembly (14-2) is combined closely；
It is equipped with spout hole (32) and drain pan (33) in upper conical valve (30-1) and lower cone valve (30-2).
2. single-cylinder dual-action hydraulic drilling jar according to claim 1, it is characterised in that：Upper jarring pad (7) and
Lower jarring pad (9) is separately mounted to idler axle (8) upper/lower terminal, easy to disassemble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261584.7A CN105781464B (en) | 2016-04-26 | 2016-04-26 | Single-cylinder dual-action hydraulic drilling jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261584.7A CN105781464B (en) | 2016-04-26 | 2016-04-26 | Single-cylinder dual-action hydraulic drilling jar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105781464A CN105781464A (en) | 2016-07-20 |
| CN105781464B true CN105781464B (en) | 2018-10-02 |
Family
ID=56398491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610261584.7A Expired - Fee Related CN105781464B (en) | 2016-04-26 | 2016-04-26 | Single-cylinder dual-action hydraulic drilling jar |
Country Status (1)
| Country | Link |
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| CN (1) | CN105781464B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826582B (en) * | 2019-03-26 | 2023-02-03 | 长江大学 | Combined type jarring instrument |
| CN110847837A (en) * | 2019-12-26 | 2020-02-28 | 合力（天津）能源科技股份有限公司 | Bidirectional hydraulic resistance type drilling jar |
| CN113338832B (en) * | 2021-05-18 | 2023-10-20 | 四川伟创石油装备制造有限公司 | Hydraulic bidirectional jar |
| CN114458211B (en) * | 2022-01-27 | 2023-09-08 | 西南石油大学 | Electrically driven intelligent jar and operation method |
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|---|---|---|---|---|
| US4511007A (en) * | 1982-09-14 | 1985-04-16 | Norton Christensen, Inc. | Locking device for a tool with telescopically displaceable parts |
| CN201202425Y (en) * | 2008-06-13 | 2009-03-04 | 重庆望江工业有限公司 | Full hydraulic double-acting drill following bumper jar |
| CN203161956U (en) * | 2012-12-13 | 2013-08-28 | 贵州高峰石油机械股份有限公司 | Sealing structure for reducing damping of piston of two-way jar accelerator |
| CN104295231A (en) * | 2014-09-16 | 2015-01-21 | 西南石油大学 | Low-friction-drag variable-diameter hydraulic thruster |
| CN204225822U (en) * | 2014-10-29 | 2015-03-25 | 上海天合石油工程股份有限公司 | A kind of sealed type Full hydraulic jar knocker during drilling |
| CN205558852U (en) * | 2016-04-26 | 2016-09-07 | 西南石油大学 | Two effect fluid pressure type drilling jars of single cylinder |
-
2016
- 2016-04-26 CN CN201610261584.7A patent/CN105781464B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511007A (en) * | 1982-09-14 | 1985-04-16 | Norton Christensen, Inc. | Locking device for a tool with telescopically displaceable parts |
| CN201202425Y (en) * | 2008-06-13 | 2009-03-04 | 重庆望江工业有限公司 | Full hydraulic double-acting drill following bumper jar |
| CN203161956U (en) * | 2012-12-13 | 2013-08-28 | 贵州高峰石油机械股份有限公司 | Sealing structure for reducing damping of piston of two-way jar accelerator |
| CN104295231A (en) * | 2014-09-16 | 2015-01-21 | 西南石油大学 | Low-friction-drag variable-diameter hydraulic thruster |
| CN204225822U (en) * | 2014-10-29 | 2015-03-25 | 上海天合石油工程股份有限公司 | A kind of sealed type Full hydraulic jar knocker during drilling |
| CN205558852U (en) * | 2016-04-26 | 2016-09-07 | 西南石油大学 | Two effect fluid pressure type drilling jars of single cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105781464A (en) | 2016-07-20 |
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Legal Events
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Derong Inventor after: Pu Yangfeng Inventor after: Huang Zegui Inventor after: Sun Linping Inventor after: Yue Huawei Inventor after: Xie Wujun Inventor after: Wu Simeng Inventor after: Yang Zhihao Inventor before: Sun Linping Inventor before: Zhang Derong Inventor before: Yue Huawei Inventor before: Xie Wujun Inventor before: Wu Simeng |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20190426 |
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| CF01 | Termination of patent right due to non-payment of annual fee |