CN205977154U - Local anti - circulating overshot in pit minces - Google Patents
Local anti - circulating overshot in pit minces Download PDFInfo
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- CN205977154U CN205977154U CN201620851701.0U CN201620851701U CN205977154U CN 205977154 U CN205977154 U CN 205977154U CN 201620851701 U CN201620851701 U CN 201620851701U CN 205977154 U CN205977154 U CN 205977154U
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- inner core
- hole
- fishing socket
- minced
- local reverse
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Abstract
The utility model discloses a local anti - circulating overshot in pit minces, be in including urceolus, connection the top connection and the fixed cover of the upper end of urceolus are in the inside inner tube of urceolus, sealed rubber ring is installed to the lower part outer wall of urceolus, the urceolus with form the annular space between the inner tube, the upper end of inner tube is sealed, just the inside of inner tube is equipped with the baffle, vertical direction is followed to the baffle will the inner tube is separated for two parts that the upper end is linked together, and the lower extreme of one of them part is equipped with the sediment board so that this part forms sedimentation chamber, the lateral wall of inner tube be equipped with with the connecting pipe that the annular space is linked together. According to the configuration, the utility model provides a local anti - circulating overshot in pit minces, it can effectively improve salvage efficiency.
Description
Technical field
This utility model is related to petroleum exploration and development oil-water well workover treatment fishing tool technical field, more particularly, to a kind of
Mince local reverse-circulation fishing socket for down-hole.
Background technology
In oil-water well workover operation construction, for the small falling object dropping in well and set milling produce bulk chip, often
It is rinsed salvaging using local reverse-circulation junk basket.
Such instrument is made up of top connection, outer tube, inner core, precipitation chamber.By changing tool interior liquid circulation mode, that is,
Direct circulation workover fluid in the drilling tool of top is passed through the special internal structure of instrument, be changed into local reverse-circulation mode.This kind of follow
Ring mode can not only simplify working procedure, prevent the annular space returning on small falling object or chip salvage drilling tool and sleeve pipe simultaneously,
Cause lock of tool drilling.
In prior art, disclosed in the patent documentation of Application No. 201320747715.4, a kind of local reverse-circulation is salvaged
Device, after the workover fluid of this kind of fisher is by Drill-pipe conveyed to fisher, a part flows out to the outside of fisher, and a part is being beaten
Drag for the inside of device, and the workover fluid in fisher and the workover fluid outside fisher form circulation.
However, this kind of endless form only has part workover fluid can form reacting cycle fluid, act on small falling object or broken
Bits, cause instrument to salvage limited ability, salvage efficiency low.
Therefore, how to solve the problems, such as that the salvaging of fisher in prior art is less efficient, become those skilled in the art
Important technological problems to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of down-hole to mince local reverse-circulation fishing socket, and it can
Effectively improve salvaging efficiency.
This utility model provides a kind of down-hole and minces local reverse-circulation fishing socket, including outer tube, is connected to described outer tube
The top connection of upper end and fixed cover described outer barrel inner core；The bottom outer wall of described outer tube is provided with fluid sealant
Circle, between described outer tube and described inner core formed annular space, described inner core upper end sealing, and the inside of described inner core be provided with every
Plate, described inner core is vertically divided into two parts that upper end is connected by described dividing plate, and the lower end of a portion sets
There is precipitation plate so that this part forms precipitation chamber；The side wall of described inner core is provided with the connecting tube being connected with described annular space.
Preferably, described connecting tube is arranged on above precipitation chamber side.
Preferably, described connecting tube is provided with many.
Preferably, described connection tube cavity is provided with drainage screen.
Preferably, the top of described inner core is conical structure.
Preferably, described precipitation plate is inclined upwardly.
Preferably, local welding or be connected by pin between the outer wall of described inner core and the inwall of described outer tube.
Preferably, the bottom outer wall of described outer tube is provided with O-ring seal.
Preferably, described precipitation plate is provided with the through hole less than chip diameter.
In the technical scheme that this utility model provides, when salvaging, covering milling, workover fluid passes through the entrance of drilling rod inner chamber and salvages
In annular space between the outer tube of cylinder and inner core, then act on junk, and carry the precipitation intracavity that fragment enters inner core, due to outer
The effect of cylinder lower seal cushion rubber, workover fluid or fragment cannot flow up so that workover fluid acts on completely along the outer wall of outer tube
On the junk or fragment in shaft bottom, it is to avoid the generation of lock of tool drilling, workover fluid carries fragment through returning on inner core precipitate the upper of chamber
Behind portion, fragment falls into precipitation chamber under gravity, and workover fluid reenters the annular space between inner core and outer tube through connecting tube
In it is achieved that local reverse-circulation salvages the purpose of small falling object or chip, improve salvaging efficiency, prevent sending out of lock of tool drilling
Raw.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of fishing socket in this utility model embodiment.
Specific embodiment
The core of this specific embodiment is to provide a kind of down-hole to mince local reverse-circulation fishing socket, and it can effectively carry
High salvaging efficiency.
Hereinafter, referring to the drawings embodiment is illustrated.Additionally, embodiments illustrated below is not to described in claim
Utility model content play any restriction effect.In addition, the full content of the composition represented by example below is not limited to conduct
Necessary to the solution of the utility model described in claim.
Refer to Fig. 1, the local reverse-circulation fishing socket that this specific embodiment provides includes top connection 1, outer tube 2, inner core
3, the top of outer tube 2 is connected with top connection 1, and bottom connects workover tool.
The external diameter of inner core 3 is less than the internal diameter of outer tube 2, and the two connects together, and the closed upper part of inner core 3, and bottom half is sealed
Close, its inner chamber is divided into two parts by dividing plate 4, a part of bottom is provided with precipitation plate so that this part forms precipitation chamber 9, another
Part is circulation canal, and the connection of two parts top；The inner chamber of inner core 3 is connected by connecting tube 8 insertion with the inner chamber of outer tube 2.
The bottom outer wall of outer tube 2 is provided with O-ring seal 6, is returned upwards along the outer wall of outer tube 2 with wall workover fluid.
Be arranged such, salvaging, set milling when, workover fluid by drilling rod inner chamber enter fishing socket outer tube 2 and inner core 3 it
Between annular space in, then act on junk, and carry the precipitation intracavity that fragment enters inner core 3, due to outer tube lower seal cushion rubber 6
Effect, workover fluid or fragment cannot flow up along the outer wall of outer tube so that workover fluid act on completely shaft bottom junk or
On fragment, it is to avoid the generation of lock of tool drilling, after workover fluid carries the top through returning to precipitate chamber 9 on inner core for the fragment, in gravity
The lower fragment of effect falls into precipitation chamber 9, and workover fluid reenters in the annular space between inner core and outer tube it is achieved that local through connecting tube
Reacting cycle salvages the purpose of small falling object or chip, improves salvaging efficiency, prevents the generation of lock of tool drilling.
It should be noted that in the present embodiment, connecting tube 8 is arranged on above precipitation chamber side, and can arrange many, so that
Improve the collection efficiency of fragment or chip.
In connecting tube 8 inner chamber, drainage screen is preferably installed, to prevent from returning to oil jacket annular space on small falling object or chip.
In addition, inner core 2 top is preferably conical structure, it is beneficial to workover fluid and flows downward.The bottom precipitation plate of inner core 2
Preferably it is inclined upwardly, be beneficial to workover fluid, small falling object and chip and flow up.In addition, can be provided with precipitation plate being less than
The through hole of chip diameter, is beneficial to workover fluid and flows out in precipitation chamber 9.
The welding bar of blow-by annular space or pin 7 can be adopted between inner core 3 outer wall and outer tube 2 inwall fixing, with strengthening
The bonding strength of outer tube.
It should be noted that outer tube 2 bottom that the present embodiment provides can connect the workover tools such as casing section mill 5, hollow junk mill.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (8)
1. local reverse-circulation fishing socket is minced it is characterised in that including outer tube, being connected to the upper end of described outer tube in a kind of down-hole
Top connection and fixed cover are in the inner core of described outer barrel；The bottom outer wall of described outer tube is provided with O-ring seal, described outer
Form annular space, the upper end sealing of described inner core between cylinder and described inner core, and the inside of described inner core is provided with dividing plate, described dividing plate
Vertically described inner core is divided into two parts that upper end is connected, and the lower end of a portion be provided with precipitation plate, with
This part is made to form precipitation chamber；The side wall of described inner core is provided with the connecting tube being connected with described annular space.
2. local reverse-circulation fishing socket is minced it is characterised in that described connecting tube is arranged in down-hole as claimed in claim 1
Above precipitation chamber side.
3. down-hole as claimed in claim 2 mince local reverse-circulation fishing socket it is characterised in that described connecting tube be provided with many
Root.
4. local reverse-circulation fishing socket is minced it is characterised in that described connection tube cavity is installed in down-hole as claimed in claim 3
There is drainage screen.
5. local reverse-circulation fishing socket is minced it is characterised in that described inner core in the down-hole as described in any one of claim 1-4
Top is conical structure.
6. local reverse-circulation fishing socket is minced it is characterised in that described precipitation plate in the down-hole as described in any one of claim 1-4
It is inclined upwardly.
7. local reverse-circulation fishing socket is minced it is characterised in that the outer wall of described inner core and institute in down-hole as claimed in claim 1
State between the inwall of outer tube local welding or connected by pin.
8. local reverse-circulation fishing socket is minced it is characterised in that described precipitation plate is provided with down-hole as claimed in claim 1
Through hole less than chip diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620851701.0U CN205977154U (en) | 2016-08-08 | 2016-08-08 | Local anti - circulating overshot in pit minces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620851701.0U CN205977154U (en) | 2016-08-08 | 2016-08-08 | Local anti - circulating overshot in pit minces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977154U true CN205977154U (en) | 2017-02-22 |
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ID=58029661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620851701.0U Active CN205977154U (en) | 2016-08-08 | 2016-08-08 | Local anti - circulating overshot in pit minces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977154U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724979A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | Inverse circular sand washing adapter device |
| CN108716375A (en) * | 2018-07-01 | 2018-10-30 | 东北石油大学 | Cyclone type reacting cycle well-flushing fishing device |
| CN111852402A (en) * | 2020-08-31 | 2020-10-30 | 四川轻化工大学 | Wellhead tool for crushing large-size underground falling objects |
| CN115217431A (en) * | 2021-04-19 | 2022-10-21 | 中国石油天然气股份有限公司 | Sleeve milling device |
| CN115749658A (en) * | 2022-01-21 | 2023-03-07 | 中国石油天然气集团有限公司 | Reverse circulation hydraulic catching and salvaging barrel and salvaging method |
-
2016
- 2016-08-08 CN CN201620851701.0U patent/CN205977154U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724979A (en) * | 2017-11-01 | 2018-02-23 | 中石化石油工程技术服务有限公司 | Inverse circular sand washing adapter device |
| CN108716375A (en) * | 2018-07-01 | 2018-10-30 | 东北石油大学 | Cyclone type reacting cycle well-flushing fishing device |
| CN111852402A (en) * | 2020-08-31 | 2020-10-30 | 四川轻化工大学 | Wellhead tool for crushing large-size underground falling objects |
| CN111852402B (en) * | 2020-08-31 | 2022-04-29 | 四川轻化工大学 | Wellhead tool for crushing large-size underground falling objects |
| CN115217431A (en) * | 2021-04-19 | 2022-10-21 | 中国石油天然气股份有限公司 | Sleeve milling device |
| CN115749658A (en) * | 2022-01-21 | 2023-03-07 | 中国石油天然气集团有限公司 | Reverse circulation hydraulic catching and salvaging barrel and salvaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180726 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: Down-hole job that requires special skills company of Central Plains petroleum works Co., Ltd of China Petrochemical Industry Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100028 Chaoyang District, Beijing Hui Xin Street 6, Twelfth level. Co-patentee before: Down-hole job that requires special skills company of Central Plains petroleum works Co., Ltd of China Petrochemical Industry Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |