CN114412406B - Bidirectional hydraulic jar - Google Patents
Bidirectional hydraulic jar Download PDFInfo
- Publication number
- CN114412406B CN114412406B CN202210308341.XA CN202210308341A CN114412406B CN 114412406 B CN114412406 B CN 114412406B CN 202210308341 A CN202210308341 A CN 202210308341A CN 114412406 B CN114412406 B CN 114412406B
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- shaft
- cylinder
- pressure
- outer end
- upper pressure
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052802 copper Inorganic materials 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 27
- 239000004519 grease Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 27
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a bidirectional hydraulic jar which comprises a driving shaft, wherein a driving cylinder is arranged at the upper end of the driving shaft, an upper pressure cavity shaft is connected to the outer end part of a grease cylinder, an upper pressure shaft which is positioned in the upper pressure cavity shaft and moves along the upper pressure cavity shaft is arranged on the driving shaft, a copper piston expansion sleeve is sleeved on the upper pressure shaft through a limiting sleeve, a slender shaft is arranged at the outer end part of the upper pressure shaft, a balance pressure cylinder is connected to the outer end part of the upper pressure cavity shaft, a piston positioned in the balance pressure cylinder is arranged on the slender shaft, a lower pressure cavity shaft is connected to the outer end part of the balance pressure cylinder, and a lower pressure shaft positioned in the lower pressure cavity shaft is connected to the outer end part of the slender shaft. The invention can respectively output the upper impact force and the lower impact force according to the position of the stuck drill, and can be used for many times in a high-strength severe environment while drilling, thereby improving the operation efficiency, saving the time cost for the handling of the stuck drill accident in the drilling operation and having high reliability.
Description
Technical Field
The invention relates to the technical field of hydraulic jars, in particular to a bidirectional hydraulic jar.
Background
At present, the jar in construction operation and well drilling is commonly used for cutting, drilling and grinding, sidetracking, salvaging and other operations as a common tool, and can be generally divided into a mechanical jar and a hydraulic jar; during the drilling process, the drilling sticking accident can be avoided. Therefore, the jar is particularly important at this moment, but the domestic jar can only realize one-way hydraulic jar at present, and is difficult to be used flexibly under some complex well conditions, and in addition, the common hydraulic jar is easy to be accidentally excited to cause fish falling accidents. We have therefore developed this and propose a bi-directional hydraulic jar.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a bidirectional hydraulic jar, which comprises a driving shaft, wherein the upper end of the driving shaft is provided with a driving cylinder, the outer end part of the driving cylinder is connected with a main shaft lengthening cylinder, the end part of the main shaft lengthening cylinder is connected with a grease cylinder, the driving shaft is provided with a hammer positioned in the grease cylinder, the outer end part of the grease cylinder is connected with an upper pressure cavity shaft, the driving shaft is provided with an upper pressure shaft which is positioned in the upper pressure cavity shaft and moves along the upper pressure cavity shaft, the upper pressure shaft is sleeved with a copper piston expansion sleeve through a limit sleeve, the outer end part of the upper pressure shaft is provided with a slender shaft, the outer end part of the upper pressure cavity shaft is connected with a balance pressure cylinder, the slender shaft is provided with a piston positioned in the balance pressure cylinder, the outer end part of the balance pressure cylinder is connected with a lower pressure cavity shaft, the outer end part of the slender shaft is connected with a lower pressure shaft positioned in the lower pressure cavity shaft, copper piston expansion sleeves are arranged on the upper pressure shaft and the lower pressure shaft through limiting sleeves, and the outer end of the lower pressure cavity shaft is connected with a lower connector.
As a preferred technical scheme of the invention, the copper piston expansion sleeve is provided with an oil needle.
As a preferable technical scheme of the invention, an inner cavity necking end with the upper end sequentially reduced in cavity diameter is arranged in the upper pressure cavity shaft.
As a preferable technical scheme of the invention, the lower end of the interior of the lower pressure cavity shaft is also an inner cavity necking end with the cavity diameters decreasing in sequence.
As a preferable technical scheme of the invention, the upper pressure cavity shaft and the balance pressure cylinder are connected through an upper double male joint.
As a preferable technical scheme of the invention, the outer end part of the balance pressure cylinder is connected with the lower pressure cavity shaft through a lower double male joint.
As a preferable technical solution of the present invention, the lower joint is connected to a lower drill.
As a preferred technical scheme of the invention, a plurality of oblong slot type fluid channels are arranged at the penetrating positions of the upper pressure shaft and the lower pressure shaft of the copper piston expansion sleeve.
The invention has the beneficial effects that:
1. the bidirectional hydraulic jar is provided. At this time, the jar vibrates upward/downward; the hydraulic impact damper is used for conveying overweight bidirectional impact force when a drilling string is clamped at the bottom of a well during drilling clamping accidents at the bottom of the well, and can transmit upward force when the drilling string is unlocked from the bottom of the well, and can transmit downward force when the drilling string is unlocked from the bottom of the well; when the sticking and sucking stuck drill is encountered, the drilling tool needs to be moved to enable the drilling tool to obtain circulation and rotation again, and huge impact force can be generated according to the working requirement. The invention can respectively output the upper impact force and the lower impact force according to the position of the drill sticking, can be used repeatedly in a high-strength severe environment, is used while drilling, improves the operation efficiency, saves the time cost for the handling of the drill sticking accident in the drilling operation, and has high reliability.
2. In the process of upper impact, the drive shaft is lifted to drive the upper pressure shaft to carry the stop collar to pass through the necking part of the inner cavity of the upper pressure cavity shaft, and the copper piston expansion sleeve is nearly equal in outer diameter to the necking part of the inner cavity of the upper pressure cavity shaft, so that the end face of the inner hole of the copper piston expansion sleeve is tightly attached to the circle of the upper pressure shaft due to friction forceArc of arcThe surface and the flow area are almost completely blocked. The upper part forms a pressure area only by the overflow of a tiny gap between the oil needle and the upper hole of the copper piston expansion sleeve, the pressure is increased along with the continuous lifting of the tool, and the pressure is released instantly until the upper pressure shaft is lifted to the necking end position of the upper pressure cavity, so that the upward striking operation is realized. Meanwhile, the copper piston expansion sleeve on the lower pressure shaft firstly passes through the necking part of the lower pressure cavity, the friction force enables the copper piston expansion sleeve to be downward and contacted with the limiting sleeve, so that the end face of the copper piston expansion sleeve is separated from the circular arc surface of the lower pressure shaft, fluid flows through the long oval groove on the lower pressure shaft, and a pressure area is not formed; wherein the lower striking process is consistent with the upper striking principle; the invention can respectively output the upper impact force and the lower impact force according to the position of the stuck drill, and can be used for many times in a high-strength severe environment while drilling, thereby improving the operation efficiency, saving the time cost for the handling of the stuck drill accident in the drilling operation and having high reliability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a bi-directional hydraulic jar of the present invention;
FIG. 2 is a schematic view of the installation of a locating pin of a bi-directional hydraulic jar of the present invention;
FIG. 3 is a schematic view of the installation of an elongated shaft of a bi-directional hydraulic jar of the present invention;
FIG. 4 is a schematic view of the installation of the lower pressure shaft of a bi-directional hydraulic jar of the present invention;
FIG. 5 is a schematic illustration of the installation of the copper piston expansion sleeve of a bi-directional hydraulic jar of the present invention;
FIG. 6 is a schematic view of the installation of the oil needle of a bi-directional hydraulic jar of the present invention.
In the figure: 1. a drive shaft; 2. a drive cylinder; 3. positioning pins; 4. a main shaft lengthening cylinder; 5. a hammer; 6. a barrel of butter; 7. a grease retainer sleeve; 8. an upper pressure chamber shaft; 9. a position limiting sleeve; 10. a copper piston expansion sleeve; 11. an upper pressure shaft; 12. an elongated shaft; 13. an upper double male connector; 14. a piston; 15. a pressure balancing cylinder; 16. a lower double male connector; 17. a lower pressure shaft; 18. a lower pressure chamber axis; 19. a lower joint; 20. and (4) oil needle.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-6, the bidirectional hydraulic jar of the present invention comprises a driving shaft 1, a driving cylinder 2 is provided at the upper end of the driving shaft, a main shaft lengthening cylinder 4 is connected to the outer end of the driving cylinder 2, a grease cylinder 6 is connected to the end of the main shaft lengthening cylinder 4, a hammer 5 located in the grease cylinder 6 is provided on the driving shaft 1, an upper pressure chamber shaft 8 is connected to the outer end of the grease cylinder 6, an upper pressure shaft 11 located in the upper pressure chamber shaft 8 and moving along the upper pressure chamber shaft 8 is provided on the driving shaft 1, a copper piston expanding sleeve 10 is provided on the upper pressure shaft 11 via a limiting sleeve 9, an elongated shaft 12 is provided at the outer end of the upper pressure shaft, a balance pressure cylinder 15 is connected to the outer end of the upper pressure chamber shaft 8, a piston 14 located in the balance pressure cylinder is provided on the elongated shaft, a lower pressure chamber shaft 18 is connected to the outer end of the balance pressure cylinder, the outer end of the slender shaft 12 is connected with a lower pressure shaft 17 positioned in a lower pressure cavity shaft 18, the upper pressure shaft 11 and the lower pressure shaft 17 are both provided with copper piston expansion sleeves 10 through limiting sleeves 9, the outer end of the lower pressure cavity shaft 18 is connected with a lower joint 19, and the copper piston expansion sleeves 10 are provided with oil needles. When a drilling string is clamped at the bottom of a well, the two-way hydraulic jar can transmit an overweight two-way impact force, when the drilling string is clamped at the bottom of the well, the jar can transmit an upward force, and when the drilling string is unlocked from the bottom of the well, the jar can transmit a downward force; when sticking and sticking are encountered, the drilling tool needs to be moved so that the drilling tool can be circulated and rotated again. At this time, the jar vibrates upward/downward; when the device is used for a downhole drilling stuck accident, huge impact force can be generated according to working requirements. The invention can respectively output the upper impact force and the lower impact force according to the position of the drill sticking, can be used repeatedly in a high-strength severe environment, is used while drilling, improves the operation efficiency, saves the time cost for the handling of the drill sticking accident in the drilling operation, and has high reliability.
And an inner cavity necking end with the upper end sequentially reduced in cavity diameter is arranged in the upper pressure cavity shaft 8.
The lower end of the interior of the lower pressure chamber shaft 18 is also an inner chamber necking end with the chamber diameter being reduced in sequence.
The upper pressure cavity shaft 8 is connected with the balance pressure cylinder 15 through the upper double male connector 13, so that the installation and the disassembly are convenient.
The outer end part of the balance pressure cylinder 15 is connected with the lower pressure cavity shaft 18 through a lower double male joint 16, so that the balance pressure cylinder is convenient to mount and dismount.
The lower joint 19 is connected with a lower drilling tool, and the upper pressure shaft 11 and the lower pressure shaft 17 are provided with a plurality of fluid channels in an oblong groove shape at the penetrating positions of the copper piston expansion sleeve 10.
The working principle is as follows: in the process of upward striking, the driving shaft 1 is lifted up to drive the upper pressure shaft 11 to carry the limiting sleeve 9 to easily pass through the inner cavity necking part of the upper pressure cavity shaft 8, and the inner hole end surface of the copper piston expansion sleeve 10 is tightly attached to the arc surface of the upper pressure shaft 11 due to friction force because the outer diameter of the copper piston expansion sleeve 10 is almost equal to the diameter of the inner cavity necking part of the upper pressure cavity shaft 8, so that the flow area is almost completely blocked. Only by means of overflowing of a small gap between the oil needle 20 and the hole in the copper piston expansion sleeve 10, a pressure area is formed at the upper part, the pressure is increased along with continuous lifting of the tool until the upper pressure shaft 11 is lifted to the necking end position of the upper pressure cavity, and the pressure is released instantly to realize the upward striking operation. Meanwhile, the copper piston expansion sleeve 10 on the lower pressure shaft 17 firstly passes through the necking part of the lower pressure cavity, the friction force enables the copper piston expansion sleeve 10 to be downward and to be in contact with the limiting sleeve 9, so that the end surface of the copper piston expansion sleeve 10 is separated from the arc surface of the lower pressure shaft 17, fluid flows through the long oval groove on the lower pressure shaft 17, and a pressure area is not formed; wherein the lower striking process is consistent with the upper striking principle; the invention can respectively output the upper impact force and the lower impact force according to the position of the drill sticking, can be used repeatedly in a high-strength severe environment, is used while drilling, improves the operation efficiency, saves the time cost for the handling of the drill sticking accident in the drilling operation, and has high reliability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A bidirectional hydraulic jar, characterized in that: the device comprises a driving shaft (1), a driving cylinder (2) is arranged at the upper end of the driving shaft, a main shaft lengthening cylinder (4) is connected to the outer end of the driving cylinder (2), a grease cylinder (6) is connected to the end of the main shaft lengthening cylinder (4), a hammer (5) located in the grease cylinder (6) is arranged on the driving shaft (1), an upper pressure cavity shaft (8) is connected to the outer end of the grease cylinder (6), an upper pressure shaft (11) which is located in the upper pressure cavity shaft (8) and moves along the upper pressure cavity shaft (8) is arranged on the driving shaft (1), a copper piston expansion sleeve (10) is arranged on the upper pressure shaft (11) through a limiting sleeve (9), a slender shaft (12) is arranged at the outer end of the upper pressure cavity shaft (8), a balance pressure cylinder (15) is connected to the outer end of the upper pressure cavity shaft (8), and a piston (14) located in the balance pressure cylinder (15) is arranged on the slender shaft, the outer end of the balance pressure cylinder (15) is connected with a lower pressure cavity shaft (18), the outer end of the slender shaft (12) is connected with a lower pressure shaft (17) positioned in the lower pressure cavity shaft (18), the upper pressure shaft (11) and the lower pressure shaft (17) are both provided with copper piston expansion sleeves (10) through limiting sleeves (9), and the outer end of the lower pressure cavity shaft (18) is connected with a lower joint (19); and a plurality of oblong groove-shaped fluid channels are arranged at the penetrating positions of the upper pressure shaft (11) and the lower pressure shaft (17) in the copper piston expansion sleeve (10).
2. A bi-directional hydraulic jar as claimed in claim 1 wherein the copper piston expansion sleeve (10) is provided with oil needles.
3. A bi-directional hydraulic jar as claimed in claim 2 wherein the upper pressure chamber shaft (8) is internally provided with an inner chamber necked-down end having an upper end with successively decreasing chamber diameters.
4. A bi-directional hydraulic jar as claimed in claim 2 wherein the lower inner end of the lower pressure chamber shaft (18) is also an inner chamber necked-down end having successively smaller chamber diameters.
5. A bi-directional hydraulic jar as claimed in claim 2 wherein the upper pressure chamber shaft (8) is connected to the balance pressure barrel (15) via an upper double male connector (13).
6. A bi-directional hydraulic jar as claimed in claim 1 wherein the balance pressure barrel (15) is connected between its outer end and the lower pressure chamber shaft (18) via a lower double male joint (16).
7. A bi-directional hydraulic jar as claimed in claim 1 wherein the lower connector (19) is connected to a lower tool.
8. The bi-directional hydraulic jar as claimed in claim 1, wherein a locating pin (3) is provided between the driving shaft and the main shaft extension cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308341.XA CN114412406B (en) | 2022-03-28 | 2022-03-28 | Bidirectional hydraulic jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308341.XA CN114412406B (en) | 2022-03-28 | 2022-03-28 | Bidirectional hydraulic jar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412406A CN114412406A (en) | 2022-04-29 |
| CN114412406B true CN114412406B (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210308341.XA Active CN114412406B (en) | 2022-03-28 | 2022-03-28 | Bidirectional hydraulic jar |
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| Country | Link |
|---|---|
| CN (1) | CN114412406B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201943625U (en) * | 2011-01-30 | 2011-08-24 | 贵州高峰石油机械股份有限公司 | Two-way shock accelerator |
| CN205689156U (en) * | 2016-06-08 | 2016-11-16 | 牡丹江鑫北方石油钻具有限责任公司 | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar |
| CN106593308A (en) * | 2016-12-14 | 2017-04-26 | 长江大学 | Near-bit three-dimensional jar |
| 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 |
| CN112664155A (en) * | 2021-01-12 | 2021-04-16 | 成都阿斯贝瑞科技有限公司 | Novel hydraulic bidirectional jar for coiled tubing |
| CN113279694A (en) * | 2021-06-15 | 2021-08-20 | 成都高峰石油机械有限公司 | Ultrashort bidirectional full-hydraulic drilling jar |
-
2022
- 2022-03-28 CN CN202210308341.XA patent/CN114412406B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201943625U (en) * | 2011-01-30 | 2011-08-24 | 贵州高峰石油机械股份有限公司 | Two-way shock accelerator |
| CN205689156U (en) * | 2016-06-08 | 2016-11-16 | 牡丹江鑫北方石油钻具有限责任公司 | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar |
| CN106593308A (en) * | 2016-12-14 | 2017-04-26 | 长江大学 | Near-bit three-dimensional jar |
| 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 |
| CN112664155A (en) * | 2021-01-12 | 2021-04-16 | 成都阿斯贝瑞科技有限公司 | Novel hydraulic bidirectional jar for coiled tubing |
| CN113279694A (en) * | 2021-06-15 | 2021-08-20 | 成都高峰石油机械有限公司 | Ultrashort bidirectional full-hydraulic drilling jar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114412406A (en) | 2022-04-29 |
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