CN212003099U - Can move back formula list slider and drag for lance - Google Patents
Can move back formula list slider and drag for lance Download PDFInfo
- Publication number
- CN212003099U CN212003099U CN202020605775.2U CN202020605775U CN212003099U CN 212003099 U CN212003099 U CN 212003099U CN 202020605775 U CN202020605775 U CN 202020605775U CN 212003099 U CN212003099 U CN 212003099U
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Abstract
The utility model relates to a fishing tool that oil industry workover was used, in particular to can move back formula single slider fishing spear. The apparatus includes a lance and a slip; the outer wall of the lance is provided with a track which inclines outwards and downwards, the slips are installed on the track and can move along the track, a locking block which limits the slips is fixed at the lower end of the track, the upper end of the lance is connected with the cylinder sleeve, the upper end of the cylinder sleeve is connected with the coupling, the piston is installed in the cylinder sleeve and is in sliding seal with the inner wall of the cylinder sleeve, a liquid discharge hole is formed in the side wall of the cylinder sleeve at the lower end of the piston, the lower end of the piston is provided with a piston rod body, and a. The utility model discloses a salvage the success rate height, but the heavy load activity unfreezes, also can carry out the back-off operation, possesses simultaneously and withdraws from the function, reduces secondary card and bores the accident, the utility model discloses after the well bore is played out, reset piston, release piece, change release shear pin, repeatedly usable.
Description
The technical field is as follows:
the utility model relates to a fishing tool that oil industry workover was used, in particular to can move back formula single slider fishing spear.
Background art:
the sliding block fishing spear is a common fishing tool in workover operation in an oil exploitation field and is used for fishing underground pipe falling objects. Under the condition that the fish tops of falling objects in the well are intact and the falling object conditions are clear, the sliding block fishing spear has the advantages of being simple in operation and high in fishing success rate compared with other fishing tools, and after the falling objects are fished, the sliding block fishing spear can be used for performing high-load up-and-down movable unfreezing and also can be used for performing back-off operation. Firstly, the sliding block fishing spear does not have a retreating function, and when the fished falling objects cannot be unfreezed, the fishing tool is difficult to safely retreat from the well, secondary drilling blockage accidents are easily caused, the subsequent treatment difficulty is increased, the workload is increased, and the operation cost is increased; and secondly, after the falling object is fished out, the fishing spear is difficult to withdraw on the ground, the fished pipe falling object is usually split in a gas cutting or mechanical cutting mode, the sliding block fishing spear is taken out, and the fishing spear can be damaged if the cutting operation is careless.
The utility model has the following contents:
the to-be-solved technical problem of the utility model is to provide a can move back formula single slider drags for lance, the device has realized that the salvage success rate is high, can release the card by the heavy load activity, also can carry out the back-off operation, possesses simultaneously and to withdraw from the function, reduces the secondary card and bores the accident, the utility model discloses after the well bore is played out, reset piston, release piece, change release shear pin, repeatedly usable. The defects that the existing sliding block fishing spear does not have a retreating function, secondary drill jamming accidents are easily caused, the fishing spear is difficult to withdraw on the ground, and the operation cost is increased are overcome.
The utility model adopts the technical proposal that: a retractable single-slider fishing spear comprises a spear rod and a slip; the outer wall of the lance is provided with a track which inclines outwards and downwards, the slips are arranged on the track and can move along the track, the lower end of the track is fixed with a locking block for limiting the clamping shoe, the upper end of the lance rod is connected with the cylinder sleeve, the upper end of the cylinder sleeve is connected with the coupling, the piston is installed in the cylinder sleeve and is in sliding seal with the inner wall of the cylinder sleeve, a liquid discharge hole is formed in the side wall of the cylinder sleeve at the lower end of the piston, a piston rod body is designed at the lower end of the piston, a release block is arranged on the outer wall of the lance rod, a boss and a groove are arranged on the inner wall of the release block, the boss and the groove are matched with the boss and the groove on the outer wall of the lance rod, the boss at the lower end of the inner wall of the release block is connected with the boss at the lower end of the outer wall of the lance rod through a release shear pin, the chute at the.
And a sealing ring is arranged on the outer wall of the piston and is sealed with the inner wall of the cylinder sleeve through the sealing ring.
The upper end of the piston is limited by the lower end face of the coupling.
A release block is disposed on the lance on a side opposite the slips.
The utility model has the advantages that: the utility model discloses a salvage the success rate height, but the heavy load activity unfreezes, also can carry out the back-off operation, possesses simultaneously and withdraws from the function, reduces secondary card and bores the accident, the utility model discloses after the well bore is played out, reset piston, release piece, change release shear pin, repeatedly usable.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a retractable single-slide fishing spear comprises a spear rod 5 and a slip 8; the outer wall of the lance 5 is provided with a track which inclines outwards and downwards, a slip 8 is arranged on the track and can move along the track, a locking block 10 for limiting the slip 8 is fixed at the lower end of the track, the upper end of the lance 5 is connected with a cylinder sleeve 4, the upper end of the cylinder sleeve 4 is connected with a coupling 1, a piston 3 is arranged in the cylinder sleeve 4 and is in sliding seal with the inner wall of the cylinder sleeve 4, the side wall of the cylinder sleeve 4 at the lower end of the piston 3 is provided with a liquid discharge hole, the lower end of the piston 3 is provided with a piston rod body, the outer wall of the lance 5 is provided with a release block 7, the inner wall of the release block 7 is provided with a boss and a groove which are matched with the boss and the groove on the inner wall of the release block 7, the boss at the lower end of the inner wall of the release block 7 is connected with the boss at the lower end of the outer wall of the lance, the spout of the upper end of the release block 7 can slide along the slide nail 6, and the bottom end of the piston rod body is propped against the upper end of the release block 7.
And a sealing ring 2 is arranged on the outer wall of the piston 3 and is sealed with the inner wall of the cylinder sleeve 4 through the sealing ring 2.
The upper end of the piston 3 is limited by the lower end surface of the coupling 1.
A release block 7 is provided on the lance 5 on the side opposite the slips 8.
Use the utility model discloses salvage the operating procedure as follows:
after the fish situation clearly falls in the implementation, select the utility model discloses go into the well, the utility model discloses the position state of piston 3 and release block 7 when going into the well as follows: the piston 3 is located at the upper part of the cylinder sleeve 4, the boss of the release block 7 is attached to the boss on the body of the lance 5, and the release block 7 is fixed on the body of the lance 5 by the release shear pin 9, so that the release block 7 cannot slide along the lance 5. In this state, the contact gap between the body of the lance 5 and the inner wall of the tubular fish in the well is minimized.
The utility model discloses transfer to the fish top position after, continue to transfer and salvage the tubular column, the weight of pushing down 5 ~ 6 tons, spear 5 gets into the fish chamber, then slowly lift and salvage the tubular column, slips 8 under the effect of self weight and fish inner wall friction power, along the track lapse on spear 5 outer wall, block the junk inner wall, along with lifting the increase of load, slips 8 card tight more, drag for the junk.
If the fish that falls in the well is blocked and dies, can't unfreeze, need withdraw from the utility model discloses the time, the operation is as follows: lifting the pipe column load to the self-hanging weight of the pipe column, impacting and lowering the fishing pipe column at a proper speed, fully seating the load of the pipe column on the fish, generating relative motion between the slips 8 and the spear 5 under the action of friction force between the slips and the inner wall of the fish, sliding the slips 8 to the upper end of the upper track on the outer wall of the spear 5, and separating from the meshed state with the inner wall of the fish; the upper part of the pipe column is connected with a hose belt, a pump truck is used for forward pressing for 6-8 MPa, the piston 3 drives the piston rod body to move downwards, the piston rod body pushes the release block 7 to cut off a release shear pin 9 for fixing the release block 7, the release block 7 slides downwards, a boss of the release block 7 enters a groove of the lance 5, and the contact gap between the body of the lance 5 and the inner wall of the fish-falling is maximized in this state; when the pump pressure is released and the pipe column is lifted, the contact gap between the body of the lance 5 and the inner wall of the fish is larger than the maximum engaging range of the tooth surface of the slip, the slip can not clamp the inner wall of the fish even sliding downwards, and the lance 5 can be withdrawn from the fish cavity.
And (3) ground quitting the fishing spear operation: after the fish that falls is fished out, arrange subaerially in, follow with the hammer the utility model discloses an axial direction strikes coupling 1 tip hard (notice with gasket protection coupling 1, damage coupling 1 when preventing to strike), makes slips 8 and fish intracavity wall break away from the interlock state, and the rethread ground pump is suppressed, cuts release shear pin 9, withdraws from spear 5.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (4)
1. A retractable single-slide fishing spear comprises a spear rod (5) and a slip (8); the method is characterized in that: the outer wall of the lance (5) is provided with a track which inclines outwards and downwards, the slips (8) are installed on the track and can move along the track, a locking block (10) for limiting the slips (8) is fixed at the lower end of the track, the upper end of the lance (5) is connected with the cylinder sleeve (4), the upper end of the cylinder sleeve (4) is connected with the coupling (1), the piston (3) is installed in the cylinder sleeve (4) and is sealed with the inner wall of the cylinder sleeve (4) in a sliding manner, the side wall of the cylinder sleeve (4) at the lower end of the piston (3) is provided with a liquid discharge hole, the lower end of the piston (3) is provided with a piston rod body, the outer wall of the lance (5) is provided with a release block (7), the inner wall of the release block (7) is provided with a boss and a groove which are matched with the boss and the groove at the inner wall of the release block (7), the boss at the lower end of the inner, a sliding nail (6) is fixed on the outer wall of the lance rod (5), a sliding groove in the upper end of the release block (7) is connected with the lance rod (5) through the sliding nail (6), the sliding groove in the upper end of the release block (7) can slide along the sliding nail (6), and the bottom end of the piston rod body abuts against the upper end of the release block (7).
2. The retractable single-slider fishing spear of claim 1, characterized in that: and a sealing ring (2) is arranged on the outer wall of the piston (3) and is sealed with the inner wall of the cylinder sleeve (4) through the sealing ring (2).
3. The retractable single-slider fishing spear of claim 1, characterized in that: the upper end of the piston (3) is limited through the lower end face of the coupling (1).
4. The retractable single-slider fishing spear of claim 1, characterized in that: the release block (7) is arranged on one side of the lance (5) opposite to the slip (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020605775.2U CN212003099U (en) | 2020-04-21 | 2020-04-21 | Can move back formula list slider and drag for lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020605775.2U CN212003099U (en) | 2020-04-21 | 2020-04-21 | Can move back formula list slider and drag for lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003099U true CN212003099U (en) | 2020-11-24 |
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ID=73416079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020605775.2U Active CN212003099U (en) | 2020-04-21 | 2020-04-21 | Can move back formula list slider and drag for lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458207A (en) * | 2021-12-30 | 2022-05-10 | 中海油能源发展股份有限公司 | Expansion pipe dragable bottom plug and matched recovery tool thereof |
-
2020
- 2020-04-21 CN CN202020605775.2U patent/CN212003099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458207A (en) * | 2021-12-30 | 2022-05-10 | 中海油能源发展股份有限公司 | Expansion pipe dragable bottom plug and matched recovery tool thereof |
| CN114458207B (en) * | 2021-12-30 | 2023-09-29 | 中海油能源发展股份有限公司 | Bottom plug capable of fishing expansion pipe and matched recovery tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230110 Address after: 300547 Unit 1609, Building C2, Taida MSD-C, No. 79, First Street, Economic and Technological Development Zone, Binhai New Area, Tianjin Patentee after: Jiaoen (Tianjin) Petroleum Engineering Technology Co.,Ltd. Patentee after: CHINA UNITED COALBED METHANE NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 300547 Unit 1609, Building C2, Taida MSD-C, No. 79, First Street, Economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: Jiaoen (Tianjin) Petroleum Engineering Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |