CN105781464A - Single-cylinder and double-acting hydraulic while-drilling jar - Google Patents
Single-cylinder and double-acting hydraulic while-drilling jar Download PDFInfo
- Publication number
- CN105781464A CN105781464A CN201610261584.7A CN201610261584A CN105781464A CN 105781464 A CN105781464 A CN 105781464A CN 201610261584 A CN201610261584 A CN 201610261584A CN 105781464 A CN105781464 A CN 105781464A
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- CN
- China
- Prior art keywords
- urceolus
- valve
- assembly
- outer barrel
- spline
- 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.)
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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
- 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 invention relates to a single-cylinder and double-acting hydraulic while-drilling jar used for solving the problem of jamming of a drilling tool in a drilling process. The single-cylinder and double-acting hydraulic while-drilling jar is capable of adjusting the magnitude and direction of a jarring force at any time, thus improving jam release efficiency. The technical scheme of the single-cylinder and double-acting hydraulic while-drilling jar is as follows: the single-cylinder and double-acting hydraulic while-drilling jar comprises an outer barrel assembly and a mandrel assembly, wherein the outer barrel assembly comprises a spline outer barrel, a jarring outer barrel, an upper valve outer barrel, a hydraulic outer barrel, a lower valve outer barrel and a lower connector; the mandrel assembly comprises a spline mandrel, an intermediate mandrel, a lower mandrel and a lock nut; the spline outer barrel and the upper valve outer barrel are respectively provided with an oil plug assembly I and an oil plug assembly II; a sealing device I is arranged between the spline mandrel and the spline outer barrel, and a steel ball and a steel ball support block are arranged on a power transmission contact surface of a key groove; an upper jarring pad and a lower jarring pad are respectively arranged at the two sides of the intermediate mandrel. A spline structure provided with a rolling body in the hydraulic while-drilling jar can realize axial low-friction sliding under a working condition of pulling torsion or compression torsion; a cone valve assembly provided with a pre-sealing mechanism can realize radial locating, so that the abrasion of a valve body is reduced, a delay effect is improved, and the jarring force is increased.
Description
Technical field
The invention belongs to oil exploitation drilling well downhole tool, be specifically related to a kind of single-cylinder dual-action hydraulic drilling jar.Suitable in the complicated underground work such as straight well, directional well, horizontal well, extended reach well.
Background technology
In drilling process, lock of tool drilling often occurring due to geology and anthropic factor etc., hydraulic drilling jar is the special downhole tool of one solving bit freezing problem.Owing to the advantage such as easy to operate, jarring force is adjustable is extensively used.When needing unfreezing when being hampered, utilize bumper jar to produce jarring force at stuck point place, make stuck point loosen, reach unfreezing purpose.
Summary of the invention
The purpose of the present invention, in order to solve the deficiency of existing bumper jar, improves unfreezing efficiency, can regulate the size and Orientation of jarring force, a kind of single-cylinder dual-action hydraulic drilling jar of special offer at any time.
The technical solution adopted in the present invention is: a kind of single-cylinder dual-action hydraulic drilling jar, including outer barrel assembly and the axle assembly being provided at its inner portion, described outer barrel assembly is to be sequentially connected with spline urceolus, jarring urceolus, upper valve urceolus, hydraulic pressure urceolus, lower valve urceolus and lower union joint with screw thread；Described axle assembly is the splined mandrel, idler axle, lower spindle and the lock nut that are sequentially connected with screw thread；Described Full hydraulic jar knocker during drilling also includes: be provided with the stifled assembly I of oil on spline urceolus, is provided with the stifled assembly II of oil on upper valve urceolus；Between splined mandrel and spline urceolus, it is provided with sealing device I, sealing device I includes O RunddichtringO B and mud-scraping ring；The splined mandrel force-trans-ferring contact surface with the keyway of spline urceolus is provided with steel ball and steel ball props up bracer, for transmitting moment of torsion and reducing the frictional resistance of axially-movable.
Jarring pad and lower jarring pad it is respectively mounted, it is simple to dismounting and replacing at idler axle two ends.At upper valve urceolus, between lower valve urceolus and lower spindle, it is provided with each one of sealing device II, upper and lower sealing device II includes wear ring, convex rubber ring, sealing ring and piston, when being easy to lift up or transfer drill string, the liquid in hydraulic cylinder does not leak, and piston is arranged to floating, it is prevented that the pull vacuum phenomenon that in hydraulic pressure urceolus, hydraulic oil occurs in time delay situation.
Being provided with each one of upper and lower cone valve assembly between hydraulic pressure urceolus and lower spindle, two cone valve assembly check valve installation directions are contrary；Upper and lower cone valve assembly includes O RunddichtringO D, upper and lower cone valve, spring；The conical surface of upper and lower cone valve assembly is combined closely with the conical surface of upper valve urceolus, lower valve urceolus respectively；Upper and lower cone valve is equipped with spout hole and drain pan.
The present invention compared with prior art has following effective effect:
1, the spline structure with rolling element that this bumper jar is internal can realize turning round the axial low frictional resistance slip under operating mode in tension-torsion or pressure.
2, this bumper jar cone valve assembly with pre-sealed mechanism can realize radially location, reduction valve body abrasion, strengthens delay effect, improve jarring force.
3 bumper jars adopt single-cylinder hydraulic chamber, it is simple to assemble and to the maintenance work simultaneously of the part in its hydraulic cavities.
Accompanying drawing explanation
Fig. 1 is the structural representation 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 drawing of Fig. 1 sealing device I in this bumper jar；
Fig. 5 is the partial enlarged drawing of Fig. 1 sealing device II in this bumper jar；
Fig. 6 is the enlarged drawing of Fig. 1 valve body assembly in this bumper jar；
Fig. 7 is the three dimensional structure schematic diagram of Fig. 6 cone valve in this bumper jar.
nullIn figure: 1-splined mandrel，2-spline urceolus，3-sealing device I，4-oil blocks up assembly I，5-O RunddichtringO A，6-jarring urceolus，The upper jarring pad of 7-，8-idler axle，Jarring pad under 9-，The upper valve urceolus of 10-，11-1-upper sealing device II，11-2-lower sealing device II，12-lower spindle，13-oil blocks up assembly II，14-1-upper conical valve assembly，Cone valve assembly under 14-2-，15-hydraulic pressure urceolus，Valve urceolus under 16-，17-lock nut，18-lower union joint，19-steel ball，20-steel ball props up bracer，21-baffle ring，22-O RunddichtringO B，23-mud-scraping ring，24-O RunddichtringO C，25-wear ring，26-convex rubber ring，27-sealing ring，28-piston，29-O shape sealing ring D，30-1-upper conical valve，Cone valve under 30-2-，31-spring，32-spout hole，33-drain pan.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is done further explaination:
This single-cylinder dual-action hydraulic drilling jar, it includes outer barrel assembly and the axle assembly set within it, and outer barrel assembly is sequentially connected with spline urceolus (2), jarring urceolus (6), upper valve urceolus (10), hydraulic pressure urceolus (15), lower valve urceolus (16) and lower union joint (18) by screw thread；Splined mandrel (1), idler axle (8), lower spindle (12) and the lock nut (17) that described axle assembly is sequentially connected with by screw thread；Upper jarring pad (7) and lower jarring pad (9) it is respectively arranged with at idler axle (8) two ends；Sealing device I (3) it is provided with between splined mandrel (1) and spline urceolus (2)；Between the force-trans-ferring contact surface of splined mandrel (1) and the keyway of spline urceolus (2), it is provided with steel ball (19) and steel ball props up bracer (20)；It is provided with sealing device II (11) between upper valve urceolus (10), lower valve urceolus (16) and lower spindle (12)；Being provided with upper and lower cone valve assembly (14-1,14-2) between hydraulic pressure urceolus (15) and lower spindle (12), two check valve installation directions are contrary；After being completed, idler axle (8) is pulled up until upper jarring pad (7) touches the interior step of jarring urceolus (6), stifled for oil assembly I (4) and the stifled assembly II (13) of oil is filled antiwear hydraulic oil, oil is blocked stifled, then idler axle (8) is slowly pressed downward against, until the step of lower spindle (12) is positioned between two upper and lower cone valve assemblies (14-1,14-2), namely step is positioned within hydraulic pressure urceolus (15), completes the assembling of single-cylinder dual-action hydraulic drilling jar.
The operation principle of this mechanism is as follows:
When normally creeping into, its rig is applied to the moment of torsion of drilling tool and props up bracer (20) by steel ball (19) and steel ball and pass to spline urceolus (2) by splined mandrel (1), then pass through jarring urceolus (6), upper valve urceolus (10), hydraulic pressure urceolus (15), lower valve urceolus (16) and lower union joint (18) thereof, and then pass to the drilling tool that lower union joint (18) is connected.
When lock of tool drilling occurs in down-hole, this bumper jar adopts hydraulic fluid leak damping principle, is specifically described the operation principle producing jarring force as follows:
On when hitting, need to upwards lift drill string, the step of lower spindle (12) moves upward and contacts with upper conical valve assembly (14-1) endoporus, now the step of lower spindle (12) and upper conical valve assembly (14-1) endoporus are the matched in clearance with sealing characteristics, the pressure that upper conical valve assembly (14-1) male cone (strobilus masculinus) is combined can be produced with the inner conical surface of upper valve urceolus (10), also hydraulic oil can be stoped to reveal from lower spindle (12), now hydraulic oil can only pass through from the spout hole (32) of upper conical valve (30-1), hydraulic pressure urceolus (15) and lower valve urceolus (16) is made to be internally formed high pressure chest, produce pressure so that more make the conical surface of upper conical valve (30-1) be tightly pressed against on the inner conical surface of valve urceolus (10), sealing effectiveness is better, the energy storage of drill string is completed after high pressure chest is formed；Lower sealing device II (11-2) becomes big due to lower cavity space simultaneously, moves upward, it is to avoid cavity of resorption is pull vacuum phenomenon under the pressure of mandrel interior hydraulic pressure；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, the energy storage of release drill string, drill string moment bounces back, driven the step of upper jarring pad (7) collision spline urceolus (2) by axle assembly, complete to hit.
During reset, by drill string slowly to transferring, when the step of lower spindle (12) passes through the endoporus of upper conical valve assembly (14-1), drill string drives upper conical valve (30-1) to compress spring (31), hydraulic oil passes through the conical surface of upper conical valve (30-1) and the gap of the inner conical surface of upper valve urceolus (10), drain pan (33) again through the external holes of upper conical valve (30-1) and upper conical valve (30-1) bottom, make to transfer drill string and do not produce resistance, when the step of lower spindle (12) is by upper conical valve assembly (14-1), complete to reset.
Under when hitting, drill string need to be compressed downwards, the step of lower spindle (12) moves upward and contacts with lower cone valve assembly (14-2) endoporus, now the step of lower spindle (12) and lower cone valve assembly (14-2) endoporus are the matched in clearance with sealing characteristics, the pressure that lower cone valve assembly (14-2) male cone (strobilus masculinus) is combined can be produced with the inner conical surface of lower valve urceolus (16), also hydraulic oil can be stoped to reveal from lower spindle (12), now hydraulic oil can only descend the spout hole (32) of cone valve (30-2) to pass through, hydraulic pressure urceolus (15) and upper valve urceolus (10) is made to be internally formed high pressure chest, produce pressure so that more make the conical surface of lower cone valve (30-2) be tightly pressed against on the inner conical surface of lower valve urceolus (16), sealing effectiveness is better, the energy storage of drill string is completed after high pressure chest is formed；Upper sealing device II (11-1) becomes big due to lower cavity space simultaneously, moves upward, it is to avoid cavity of resorption is pull vacuum phenomenon under the pressure of mandrel interior hydraulic pressure；When the step of lower spindle (12) slow transits through the endoporus of lower cone valve (30-2), the unexpected pressure release of high pressure chest, the energy storage of release drill string, drill string moment extends, driven the step of lower jarring pad (9) collision jarring urceolus (6) by axle assembly, complete down to hit.
Then continue to reset, then can produce jarring force upwardly or downwardly.
Claims (4)
1. single-cylinder dual-action hydraulic drilling jar, including outer barrel assembly and the axle assembly being provided at its inner portion, it is characterised in that: described outer barrel assembly is to be sequentially connected with spline urceolus (2), jarring urceolus (6), upper valve urceolus (10), hydraulic pressure urceolus (15), lower valve urceolus (16) and lower union joint (18) with screw thread；Described axle assembly is the splined mandrel (1), idler axle (8), lower spindle (12) and the lock nut (17) that are sequentially connected with screw thread；Being provided with the stifled assembly I (4) of oil at spline urceolus (2), upper valve urceolus (10) is provided with the stifled assembly II (13) of oil；Sealing device I (3) it is provided with between splined mandrel (1) and spline urceolus (2)；Sealing device I (3) includes O RunddichtringO B (22) and mud-scraping ring (23)；The splined mandrel (1) the keyway force-trans-ferring contact surface with spline urceolus (2) is provided with steel ball (19) and steel ball props up bracer (20).
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) are separately mounted to idler axle (8) upper/lower terminal, it is simple to dismounting.
3. single-cylinder dual-action hydraulic drilling jar according to claim 1, it is characterized in that: between upper valve urceolus (10), lower valve urceolus (16) and lower spindle (12), be provided with upper and lower sealing device II (11-1,11-2) two；Upper and lower sealing device II (11-1,11-2) includes wear ring (25), convex rubber ring (26), sealing ring (27) and piston (28).
4. single-cylinder dual-action hydraulic drilling jar according to claim 1, it is characterized in that: between hydraulic pressure urceolus (15) and lower spindle (12), be provided with upper and lower cone valve assembly (14-1,14-2) two, check valve installation direction in upper and lower cone valve assembly (14-1,14-2) is contrary；Upper and lower cone valve assembly (14-1,14-2) includes O-ring seals D (29), upper and lower cone valve (30-1,30-2), spring (31)；The conical surface of upper and lower cone valve assembly (14-1,14-2) is combined closely with the conical surface of upper valve urceolus (10), lower valve urceolus (16) respectively；Upper and lower cone valve (30-1,30-2) is equipped with spout hole (32) and drain pan (33).
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 true CN105781464A (en) | 2016-07-20 |
| CN105781464B CN105781464B (en) | 2018-10-02 |
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| 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826582A (en) * | 2019-03-26 | 2019-05-31 | 长江大学 | A kind of combined type jarring tool |
| 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 |
| CN113338832A (en) * | 2021-05-18 | 2021-09-03 | 四川伟创石油装备制造有限公司 | Hydraulic bidirectional jar |
| CN114458211A (en) * | 2022-01-27 | 2022-05-10 | 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 |
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| 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 |
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| CN205558852U (en) * | 2016-04-26 | 2016-09-07 | 西南石油大学 | Two effect fluid pressure type drilling jars of single cylinder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826582A (en) * | 2019-03-26 | 2019-05-31 | 长江大学 | A kind of combined type jarring tool |
| 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 |
| CN113338832A (en) * | 2021-05-18 | 2021-09-03 | 四川伟创石油装备制造有限公司 | Hydraulic bidirectional 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 |
| CN114458211A (en) * | 2022-01-27 | 2022-05-10 | 西南石油大学 | Electrically-driven intelligent jar and operation method |
| 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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| Publication number | Publication date |
|---|---|
| CN105781464B (en) | 2018-10-02 |
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| 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 |