CN209990463U - Coiled tubing releasing tool - Google Patents
Coiled tubing releasing tool Download PDFInfo
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- CN209990463U CN209990463U CN201920383338.8U CN201920383338U CN209990463U CN 209990463 U CN209990463 U CN 209990463U CN 201920383338 U CN201920383338 U CN 201920383338U CN 209990463 U CN209990463 U CN 209990463U
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- coiled tubing
- mounting sleeve
- claw
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Abstract
The utility model relates to an oil field releasing tool technical field is a coiled tubing releasing tool, it includes the top connection, the lower clutch, claw cover and neck bush, the claw cover is including installation cover and elastic claw, lower extreme at the installation cover is equipped with elastic claw along circumference interval an organic whole, outside at every elastic claw is equipped with spacing boss, the inboard outside fixed mounting with the top connection of upper end of installation cover is in the same place, the lower extreme outside cover at the installation cover is equipped with the lower clutch, middle part inboard at the lower clutch is equipped with spacing groove, spacing boss is located spacing inslot, middle part top-down at the neck bush is equipped with external diameter according to the preface degressive first boss and second boss, be equipped with the third boss of top in the elastic claw inboard outside the lower extreme of neck bush. The utility model has the advantages of reasonable and compact structure, convenient to use has three kinds of operation modes of giving up, can effectively accomplish the giving up with the instrument after the card, has improved the success rate of construction operation greatly, has guaranteed the output increase and the reservoir protection work of oil gas field development, oil gas well.
Description
Technical Field
The utility model relates to an oil field releasing tool technical field is a coiled tubing releasing tool.
Background
In the production of oil fields, with annual exploitation, the stratum energy is decreased rapidly, an original production string cannot meet the production requirement of liquid carrying of a gas well, in order to improve the recovery ratio of a single well, a phi 68mm isolation valve is lowered by utilizing a continuous oil pipe to carry out pressing operation, a phi 76mm production oil pipe is blocked, after the pressure of a well head returns to 0, a phi 48.3mm oil pipe is lowered, the well head presses and opens a bottom valve of the isolation valve, a production channel is established again, the liquid carrying capacity of the gas well is enhanced through the phi 48.3mm oil pipe, and the production is recovered. In the work progress, there are 2 mouthfuls of coiled tubing blocked, though install the releasing tool on coiled tubing, nevertheless appear unable bowling in the releasing in-process, current hydraulic pressure releasing tool has the condition of unable releasing, finally cuts the pipe with coiled tubing at the well head, but the later stage because the oil jacket annular space is stifled, leads to the unable normal production of oil well.
Disclosure of Invention
The utility model provides a coiled tubing releasing tool has overcome above-mentioned prior art not enough, and it can effectively solve current oil well blocked back because of releasing tool is single and lead to the unable problem of normal production of oil well.
The technical scheme of the utility model is realized through following measure: a coiled tubing releasing tool comprises an upper joint, a lower joint, a claw sleeve and an inner bushing, wherein the claw sleeve comprises a mounting sleeve and elastic claws, the elastic claws are integrally arranged at the lower end of the mounting sleeve at intervals along the circumference, a limiting boss is arranged on the outer side of each elastic claw, the inner side of the upper end of the mounting sleeve is fixedly arranged with the outer side of the upper joint, the lower joint is sleeved on the outer side of the lower end of the mounting sleeve, a limiting groove is arranged on the inner side of the middle part of the lower joint, the limiting boss is positioned in the limiting groove, a first boss and a second boss are arranged on the middle part of the inner bushing from top to bottom, the outer diameters of the first boss and the second boss are sequentially decreased, a third boss is arranged on the inner side of each elastic claw on the outer side of the lower end of the inner bushing, an inner boss is arranged on the inner side of the lower part of the mounting sleeve, the first boss is sleeved on the inner side of the mounting sleeve and, the mounting sleeve is provided with a radial liquid inlet hole communicated with the first annular cavity, the second boss is sleeved with the inner boss, a second annular cavity is formed between the mounting sleeve and the inner bushing above the second boss and the inner boss, and a third annular cavity is formed between the mounting sleeve and the inner bushing below the second boss and the inner boss.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the upper end of the inner bushing is in a frustum shape convenient for placing steel balls.
At least one group of sealing rings are arranged between the upper end of the lining sleeve and the upper joint.
At least one group of sealing rings are arranged between the first boss and the mounting sleeve.
At least one group of sealing rings are arranged between the mounting sleeve and the lower joint.
The inner side of the upper end of the mounting sleeve and the outer side of the upper joint are fixedly mounted together through threads.
The inner side of the lower joint below the inner bushing is provided with a limit table which can support the inner bushing.
The utility model has the advantages of reasonable and compact structure, convenient to use has three kinds of operation modes of giving up, can effectively accomplish the giving up with the instrument after the card, has improved the success rate of construction operation greatly, has guaranteed the output increase and the reservoir protection work of oil gas field development, oil gas well.
Drawings
Fig. 1 is a schematic view of a front view and a half sectional structure of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the middle claw sleeve of the present invention.
The codes in the figures are respectively: the structure comprises an upper joint 1, a lower joint 2, an inner bushing 3, an installation sleeve 4, an elastic claw 5, a limiting boss 6, a first boss 7, a second boss 8, a third boss 9, an inner boss 10, a shearing pin 11, a first annular cavity 12, a radial liquid inlet hole 13, a second annular cavity 14, a third annular cavity 15, a steel ball 16, a sealing ring 17 and a limiting table 18.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in attached figures 1 and 2, the coiled tubing releasing tool comprises an upper joint 1, a lower joint 2, a claw sleeve and an inner sleeve 3, wherein the claw sleeve comprises a mounting sleeve 4 and elastic claws 5, the lower end of the mounting sleeve 4 is integrally provided with the elastic claws 5 at intervals along the circumference, the outer side of each elastic claw 5 is provided with a limiting boss 6, the inner side of the upper end of the mounting sleeve 4 is fixedly mounted with the outer side of the upper joint 1, the outer side of the lower end of the mounting sleeve 4 is sleeved with the lower joint 2, the inner side of the middle part of the lower joint 2 is provided with a limiting groove, the limiting bosses 6 are positioned in the limiting grooves, the middle part of the inner sleeve 3 is provided with a first boss 7 and a second boss 8 with gradually decreasing outer diameters from top to bottom, the outer side of the lower end of the inner sleeve 3 is provided with a third boss 9 which is pressed against the inner side of the elastic claws 5, the inner side of the, the first boss 7 is sleeved in the mounting sleeve 4 and fixedly mounted with the mounting sleeve 4 through a shearing pin 11, a first annular cavity 12 is formed between the mounting sleeve 4 above the first boss 7 and the inner bushing 3, a radial liquid inlet hole 13 communicated with the first annular cavity 12 is formed in the mounting sleeve 4, the second boss 8 is sleeved with the inner boss 10, a second annular cavity 14 is formed between the mounting sleeve 4 above the second boss 8 and the inner boss 10 and the inner bushing 3, and a third annular cavity 15 is formed between the mounting sleeve 4 below the second boss 8 and the inner boss 10 and the inner bushing 3.
The inner side of the lower joint below the inner bushing is provided with a limit table which can support the inner bushing.
The utility model discloses total three kinds of releasing mode: (1) a pipe outside pressing release (2) a pipe inside pressing release (3) a throwing ball release.
(1) Releasing the pipe poor pressure: when the pressure outside the pipe is larger than the pressure inside the pipe, fluid enters the first annular cavity 12 from the radial liquid inlet hole 13 of the mounting sleeve 4, the inner bushing 3 is pushed to move downwards, the shearing pin 11 is cut, the inner bushing 3 continues to move downwards, the limiting boss 6 comes out of the limiting groove and enters the third annular cavity 15 due to the elastic action, the claw sleeve loses the support, the upper joint 1 is pulled upwards, and the claw sleeve is separated from the lower joint 2, so that the releasing is realized.
(2) Intra-tubular poor pressure releasing: when the pressure in the pipe is larger than the pressure outside the pipe, the area of the lower end face of the inner bushing 3 is larger than the area of the upper end face of the inner bushing 3, the inner bushing 3 goes upward, the shearing pin 11 is sheared, the inner bushing 3 continues to go upward, the limiting boss 6 comes out of the limiting groove and enters the third annular cavity 15 under the elastic action, the claw sleeve loses support, the upper joint 1 is pulled upward, and the claw sleeve is separated from the lower joint 2, so that the releasing is realized.
(3) Throwing a ball and releasing a hand: after the steel ball 16 is seated, the ball presses in the pipe to push the inner bushing 3 to move downwards, the shearing pin 11 is sheared, the inner bushing 3 continues to move downwards, the limiting boss 6 comes out of the limiting groove and enters the third ring cavity 15 due to the elastic action, the claw sleeve loses the support, the upper joint 1 is pulled upwards, and the claw sleeve is separated from the lower joint 2, so that the releasing is realized. The coiled tubing release tool can be further optimized or/and improved according to actual needs:
as shown in figure 1, the upper end of the inner bush 3 is in the shape of a frustum for placing a steel ball 16. Therefore, the upper end of the inner bushing 3 is in a frustum shape convenient for placing the steel ball 16 when the steel ball 16 is dropped. This facilitates seating of the steel ball 16 on the upper end of the inner liner 3 when dropped.
As shown in fig. 1, at least one set of seal rings 17 is installed between the upper end of the inner bushing 3 and the upper joint 1 for increasing the sealing performance.
As shown in fig. 1, at least one set of sealing rings 17 is installed between the first boss 7 and the mounting sleeve 4 for increasing the sealing performance.
As shown in fig. 1, at least one set of sealing rings 17 is installed between the mounting sleeve 4 and the lower joint 2 for increasing the sealing performance.
As shown in figure 1, the inner side of the upper end of the mounting sleeve 4 and the outer side of the upper joint 1 are fixedly mounted together through threads for the convenience of mounting and dismounting.
As shown in figure 1, the inner side of the lower joint below the inner bushing 3 is provided with a limit table 18 which can support against the inner bushing 3. When the inner bushing 3 descends to the state that the claw sleeve loses support, the limiting table 18 props against the inner bushing 3, so that the personnel above the well can be reminded to stop pressurizing.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (8)
1. A coiled tubing releasing tool is characterized by comprising an upper joint, a lower joint, a claw sleeve and an inner bushing, wherein the claw sleeve comprises an installation sleeve and elastic claws, the elastic claws are integrally arranged at the lower end of the installation sleeve at intervals along the circumference, a limiting boss is arranged on the outer side of each elastic claw, the inner side of the upper end of the installation sleeve is fixedly installed with the outer side of the upper joint, the lower joint is sleeved on the outer side of the lower end of the installation sleeve, a limiting groove is arranged on the inner side of the middle part of the lower joint, the limiting bosses are positioned in the limiting grooves, a first boss and a second boss with sequentially decreasing outer diameters are arranged on the middle part of the inner bushing from top to bottom, a third boss which is pressed against the inner side of each elastic claw is arranged on the outer side of the lower end of the inner bushing, the upper part of the inner bushing is sleeved on the inner side of the upper joint, the first boss is, a first annular cavity is formed between the mounting sleeve above the first boss and the inner bushing, a radial liquid inlet hole communicated with the first annular cavity is formed in the mounting sleeve, the second boss and the inner boss are sleeved together, a second annular cavity is formed between the mounting sleeve above the second boss and the inner bushing, and a third annular cavity is formed between the mounting sleeve below the second boss and the inner bushing.
2. The coiled tubing running tool of claim 1, wherein the upper end of the inner liner is frustoconical for receiving a steel ball.
3. The coiled tubing running tool of claim 1 or 2, wherein at least one set of sealing rings is installed between the upper end of the inner bushing and the upper joint, at least one set of sealing rings is installed between the first boss and the mounting sleeve, and at least one set of sealing rings is installed between the mounting sleeve and the lower joint.
4. The coiled tubing running tool of claim 1 or 2, wherein the inner side of the upper end of the mounting sleeve and the outer side of the upper joint are fixedly mounted together by a thread.
5. The coiled tubing running tool of claim 3, wherein the inner side of the upper end of the mounting sleeve and the outer side of the upper sub are fixedly mounted together by a thread.
6. The coiled tubing running tool of claim 1, 2 or 5, wherein the inside of the lower joint below the inner sleeve is provided with a stop capable of abutting against the inner sleeve.
7. The coiled tubing running tool of claim 3, wherein the inside of the lower joint below the inner liner is provided with a stop capable of abutting against the inner liner.
8. The coiled tubing running tool of claim 4, wherein the inside of the lower joint below the inner liner is provided with a stop capable of abutting against the inner liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383338.8U CN209990463U (en) | 2019-03-25 | 2019-03-25 | Coiled tubing releasing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383338.8U CN209990463U (en) | 2019-03-25 | 2019-03-25 | Coiled tubing releasing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990463U true CN209990463U (en) | 2020-01-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920383338.8U Active CN209990463U (en) | 2019-03-25 | 2019-03-25 | Coiled tubing releasing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374430A (en) * | 2021-07-07 | 2021-09-10 | 中石化石油工程技术服务有限公司 | Large-drift-diameter differential pressure type multifunctional releasing tool |
| CN115075758A (en) * | 2021-03-10 | 2022-09-20 | 中国石油化工股份有限公司 | Hydraulic composite releasing device |
-
2019
- 2019-03-25 CN CN201920383338.8U patent/CN209990463U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075758A (en) * | 2021-03-10 | 2022-09-20 | 中国石油化工股份有限公司 | Hydraulic composite releasing device |
| CN113374430A (en) * | 2021-07-07 | 2021-09-10 | 中石化石油工程技术服务有限公司 | Large-drift-diameter differential pressure type multifunctional releasing tool |
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