CN206903622U - Down-hole fishing device - Google Patents
Down-hole fishing device Download PDFInfo
- Publication number
- CN206903622U CN206903622U CN201720289677.0U CN201720289677U CN206903622U CN 206903622 U CN206903622 U CN 206903622U CN 201720289677 U CN201720289677 U CN 201720289677U CN 206903622 U CN206903622 U CN 206903622U
- Authority
- CN
- China
- Prior art keywords
- pole
- center
- top connection
- sealing ring
- outside
- 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.)
- Expired - Fee Related
Links
Abstract
Downhole tool technical field is the utility model is related to, is a kind of down-hole fishing device；It includes top connection and center-pole；It is fixedly installed togather on the outside of the lower inside of top connection and the upper end of center-pole, lower plug is installed in the bottom of center-pole, outer land is fixed with the outside of the middle part of center-pole, opening sleeve is set with the upper outside of center-pole, elastic claw is fixed with the outer rim lower end interval of opening sleeve, claw boss is fixed with the lower end outside of elastic claw, and the lower end inside face pressure of elastic claw is tightly on the lateral surface of outer land.The utility model reasonable and compact in structure, it is easy to use, pass through being used cooperatively for top connection, center-pole, opening sleeve and lower plug, realize the purpose that downhole tool is salvaged, it is therefore prevented that be difficult to reclaim after salvaging failure, obstacle is removed for subsequent job, with it is safe and reliable the characteristics of, operation is facilitated, improves operating efficiency, reduces production cost.
Description
Technical field
Downhole tool technical field is the utility model is related to, is a kind of down-hole fishing device.
Background technology
In oil field operation, it will usually tripping in downhole tool（Such as packer）Underground work is carried out, after completing underground work,
Need to reclaim downhole tool, ensure shaft bottom tubing string full-bore, or before cementing operation operation, the downhole tool of tripping in（As band seals
Every hanger）Not up to precalculated position when, instrument sit in advance extension or it is setting, it is necessary to tripping in fishing tool reclaim, re-start
Underground work.Existing fishing tool is difficult to reclaim after failure is salvaged, and obstacle is brought for subsequent job.
The content of the invention
The utility model provides a kind of down-hole fishing device, overcomes the deficiency of above-mentioned prior art, and it can effectively be solved
The problem of certainly existing fishing tool is difficult to recovery after salvaging failure.
The technical solution of the utility model is realized by following measures：A kind of down-hole fishing device, including above connect
Head and center-pole；It is fixedly installed togather on the outside of the lower inside of top connection and the upper end of center-pole, pacifies in the bottom of center-pole
Equipped with lower plug, outer land is fixed with the outside of the middle part of center-pole, opening sleeve is set with the upper outside of center-pole, is opening
The outer rim lower end interval of muzzle is fixed with elastic claw, and claw boss, the lower end of elastic claw are fixed with the lower end outside of elastic claw
Medial surface is pressed on the lateral surface of outer land, and the pressure in compression shape is connected with the center-pole between top connection and opening sleeve
Contracting spring, the lower surface of elastic claw are pressed on by compression spring on the upper surface of lower plug.
Here is the further optimization and/or improvements to above-mentioned utility model technical scheme：
Above-mentioned center-pole and lower plug are linked together by least one shear pin, in the lower outside of center-pole
Sliding groove provided with least one above-below direction, there is spacing between the bottom face of sliding groove and the bottom face of center-pole, it is corresponding to slide
Sliding connector is installed with the lower plug of dynamic groove upper position, the Inner ends of sliding connector are arranged on corresponding sliding groove
It is interior.
Above-mentioned sliding connector is followed closely for reinforcing bar.
The above-mentioned lower inside in lower plug is fixed with interior land, and the upper surface of interior land is against the lower surface of center-pole
On；Or/and it is fixed with limiting stand in the inside middle portion of top connection；Or/and the lower end outside face of interior land and lower plug is upper
Narrow inclined-plane under width.
The lower end outside face of above-mentioned top connection is inclined-plane wide at the top and narrow at the bottom；Or/and the upper outside face of outer land is upper narrow
Lower wide inclined-plane；Or/and the upper outside face of claw boss is up-narrow and down-wide inclined-plane；Or/and the lower end inside of opening sleeve
Face is up-narrow and down-wide inclined-plane.
It is above-mentioned to be provided with internal thread or external screw thread on the top of top connection.
Above-mentioned top connection and center-pole, which are threadably secured, to be installed together；Or/and pacify between top connection and center-pole
Equipped with least one of sealing ring；At least sealing ring together is installed between lower plug and center-pole；Or/and in lower plug
Lower outside is provided with least one seal mounting groove, and vulcanization sealing ring is provided with seal mounting groove.
The utility model reasonable and compact in structure, it is easy to use, pass through top connection, center-pole, opening sleeve and lower plug
It is used cooperatively, realizes the purpose that downhole tool is salvaged, it is therefore prevented that is difficult to reclaim after salvaging failure, barrier is removed for subsequent job
Hinder, there is the characteristics of safe and reliable, facilitate operation, improve operating efficiency, reduce production cost.
Brief description of the drawings
Accompanying drawing 1 is the main view half section schematic of the best embodiment of the utility model.
Accompanying drawing 2 for accompanying drawing 1 A-A to section view mplifying structure schematic diagram.
Accompanying drawing 3 is the section view mplifying structure schematic diagram at B-B in accompanying drawing 1.
Accompanying drawing 4 is the section view mplifying structure schematic diagram at C-C in accompanying drawing 1.
Coding in accompanying drawing is respectively：1 is top connection, and bar centered on 2,3 be lower plug, and 4 be outer land, and 5 be opening sleeve,
6 be elastic claw, and 7 be claw boss, and 8 be compression spring, and 9 be shear pin, and 10 be sliding groove, and 11 be sliding connector, and 12 are
Interior land, 13 be limiting stand.
Embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification
The Butut mode of accompanying drawing 1 is described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description 1
Butut direction determine.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in accompanying drawing 1,2,3,4, the down-hole fishing device includes top connection 1 and center-pole 2；In the bottom of top connection 1
It is fixedly installed togather on the outside of side and the upper end of center-pole 2, lower plug 3 is installed in the bottom of center-pole 2, in center-pole 2
Outer land 4 is fixed with the outside of middle part, opening sleeve 5 is set with the upper outside of center-pole 2, between the outer rim lower end of opening sleeve 5
Every being fixed with elastic claw 6, claw boss 7 is fixed with the lower end outside of elastic claw 6, the lower end inside face of elastic claw 6 is pressed on
On the lateral surface of outer land 4, the compression spring 8 in compression shape is connected with the center-pole 2 between top connection 1 and opening sleeve 5,
The lower surface of elastic claw 6 is pressed on by compression spring 8 on the upper surface of lower plug 3.So, by top connection 1, center-pole 2,
Opening sleeve 5 and lower plug 3 are used cooperatively, and realize the purpose that downhole tool is salvaged, and are had the characteristics of safe and reliable, are facilitated behaviour
Make, improve operating efficiency, reduce production cost.
Above-mentioned down-hole fishing device can be made further optimization and/or improvements according to being actually needed：
As shown in accompanying drawing 1,3,4, center-pole 2 and lower plug 3 are linked together by least one shear pin 9,
The lower outside of center-pole 2 is provided with the sliding groove 10 of at least one above-below direction, the bottom face of sliding groove 10 and the bottom of center-pole 2
There is spacing between end face, be installed with sliding connector 11 on the lower plug 3 of the corresponding upper position of sliding groove 10, be slidably connected
The Inner ends of part 11 are arranged in corresponding sliding groove 10.So, by the shear pin 9 that is connected between center-pole 2 and lower plug 3,
Sliding groove 10 on center-pole 2 and the sliding connector 11 on the lower plug 3 being engaged, it is therefore prevented that be difficult to back after salvaging failure
Receive, obstacle is removed for subsequent job.
As needed, sliding connector 11 is followed closely for reinforcing bar.So, reinforcing bar nail is more convenient for implementing, and cheap.
As shown in Figure 1, interior land 12 is fixed with the lower inside of lower plug 3, during the upper surface of interior land 12 is against
On the lower surface of core bar 2；Or/and it is fixed with limiting stand 13 in the inside middle portion of top connection 1；Or/and interior land 12 and underthrust
First 3 lower end outside face is inclined-plane wide at the top and narrow at the bottom.So, interior land 12 is easy to play spacing effect to lower plug 3；On connect
Limiting stand 13 on first 1 is easy to play center-pole 2 spacing effect；The lower end outside face of interior land 12 and lower plug 3 is upper
Narrow inclined-plane is facilitated insertion into extension hanger tie-back sleeve under width.
As shown in Figure 1, the lower end outside face of top connection 1 is inclined-plane wide at the top and narrow at the bottom；Or/and outside the top of outer land 4
Side is up-narrow and down-wide inclined-plane；Or/and the upper outside face of claw boss 7 is up-narrow and down-wide inclined-plane；Or/and opening sleeve
5 lower end inside face is up-narrow and down-wide inclined-plane.So, the inclined-plane on opening sleeve 5 is easy to move down back seat oblique in outer land 4
On face；It is easy to hang upside down and depart from the salvaging reducing of tie-back sleeve in the course of the work in inclined-plane on claw boss 7.
As needed, internal thread or external screw thread are provided with the top of top connection 1.So, it is easy to the peace installation and dismantling of top connection 1
Unload.
As shown in Figure 1, top connection 1 and center-pole 2 are threadably secured and are installed together；Or/and in the He of top connection 1
At least one of sealing ring is installed between center-pole 2；At least sealing ring together is installed between lower plug 3 and center-pole 2；
Or/and at least one seal mounting groove is provided with the lower outside of lower plug 3, sulphur is installed in seal mounting groove
Change sealing ring.So, threaded connection is easily installed and dismantled；Sealing ring plays better seal effect.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation
Effect, can be according to the non-essential technical characteristic of increase and decrease be actually needed, to meet the needs of different situations.
The use process of the best embodiment of the utility model：During work, with tripping in completion tubular column during fracturing reform（Packer
+ sliding bush combination）Exemplified by, it is necessary to which intubation post is returned in tripping in and extension hanger tie-back sleeve returns after completion tubular column sets completion, given up
Insert, top connection 1 of the present utility model and oil pipe are linked together and form back intubation post, return under intubation post to extension hanger position
Postpone, put back under continuing in intubation post to lower plug 3 insertion extension hanger tie-back sleeve, because elastic claw 6 claw boss 7 it is outer
Footpath is more than the internal diameter of packer tie-back sleeve, and now the claw boss 7 of elastic claw 6 is against on the upper surface of packer tie-back sleeve, after
Intubation post is put back under continuous, the claw boss 7 of elastic claw 6 is stopped that opening sleeve 5 moves up, and extrudes by packer tie-back sleeve
Compression spring 8, as opening sleeve 5 continues to move up, outer land 4 on the off center bar 2 of claw boss 7 on elastic claw 6
Support, together with claw boss 7 to contract, the elastic claw 6 after contraction is inserted into packer together with claw boss 7 and returned elastic claw 6
In connect cylinder, until in the salvaging reducing of insertion packer tie-back sleeve, now elastic claw 6 resets, and restPoses again, elasticity
Claw boss 7 on pawl 6 is hung upside down to be salvaged on reducing in tie-back sleeve, and the vulcanization sealing ring on lower plug 3 can make tieback string and pressure
Split completion tubular column and form sealing, follow-up fracturing work can be carried out.
Need to salvage completion tubular column by force after the completion of production operation, above carry back intubation post, increase tonnage and above put forward rear underground work
Tool deblocking, and salvage downhole tool；If downhole tool can not unseal, above carrying back intubation post makes the He of the utility model center-pole 2
The shear pin 9 that lower plug 3 connects is cut, and center-pole 2 is overall to be moved up, and opening pawl set is shunk, and fisher is salvaged with downhole tool
Neck separates, and proposes back intubation post, ensures that junk is not stayed in underground, the controlled stroke of sliding connector 11 simultaneously ensures center-pole 2 with
Plug 3 does not separate, and does not produce trouble of lost tool in hole；If salvaging other downhole tools, tripping in the utility model, the utility model is hung upside down
Directly above carried when on fishing neck reducing, its operation principle is identical with salvaging packer.
Claims (15)
1. a kind of down-hole fishing device, it is characterised in that including top connection and center-pole；The lower inside and center-pole of top connection
Upper end on the outside of be fixedly installed togather, lower plug is installed in the bottom of center-pole, is fixed with the outside of the middle part of center-pole
Outer land, opening sleeve is set with the upper outside of center-pole, elastic claw is fixed with the outer rim lower end interval of opening sleeve, in bullet
The lower end outside of property pawl is fixed with claw boss, and the lower end inside face pressure of elastic claw tightly on the lateral surface of outer land, connects upper
The compression spring in compression shape is connected with center-pole between head and opening sleeve, the lower surface of elastic claw passes through compression spring pressure
Tightly on the upper surface of lower plug.
2. down-hole fishing device according to claim 1, it is characterised in that center-pole and lower plug pass through at least one
Shear pin is linked together, and the sliding groove of at least one above-below direction, the bottom of sliding groove are provided with the lower outside of center-pole
There is spacing between end face and the bottom face of center-pole, be installed with and be slidably connected on the lower plug of corresponding sliding groove upper position
Part, the Inner ends of sliding connector are arranged in corresponding sliding groove.
3. down-hole fishing device according to claim 2, it is characterised in that sliding connector is followed closely for reinforcing bar.
4. according to the down-hole fishing device described in claim 1 or 2 or 3, it is characterised in that the lower inside of lower plug is fixed with
Interior land, the upper surface of interior land are against on the lower surface of center-pole；Or/and fix limited location in the inside middle portion of top connection
Platform；Or/and the lower end outside face of interior land and lower plug is inclined-plane wide at the top and narrow at the bottom.
5. according to the down-hole fishing device described in claim 1 or 2 or 3, it is characterised in that the lower end outside face of top connection is upper
Narrow inclined-plane under width；Or/and the upper outside face of outer land is up-narrow and down-wide inclined-plane；Or/and outside the top of claw boss
Side is up-narrow and down-wide inclined-plane；Or/and the lower end inside face of opening sleeve is up-narrow and down-wide inclined-plane.
6. down-hole fishing device according to claim 4, it is characterised in that the lower end outside face of top connection is wide at the top and narrow at the bottom
Inclined-plane；Or/and the upper outside face of outer land is up-narrow and down-wide inclined-plane；Or/and the upper outside face of claw boss is
Up-narrow and down-wide inclined-plane；Or/and the lower end inside face of opening sleeve is up-narrow and down-wide inclined-plane.
7. according to the down-hole fishing device described in claim 1 or 2 or 3 or 6, it is characterised in that the top of top connection is provided with interior spiral shell
Line or external screw thread.
8. down-hole fishing device according to claim 4, it is characterised in that the top of top connection is provided with internal thread or outer spiral shell
Line.
9. down-hole fishing device according to claim 5, it is characterised in that the top of top connection is provided with internal thread or outer spiral shell
Line.
10. according to the down-hole fishing device described in claim 1 or 2 or 3 or 6, it is characterised in that top connection and center-pole pass through
It is screwed and is installed together；Or/and at least sealing ring together is installed between top connection and center-pole；In lower plug and
At least one of sealing ring is installed between center-pole；Or/and it is provided with least one seal peace in the lower outside of lower plug
Tankage, vulcanization sealing ring is installed in seal mounting groove.
11. down-hole fishing device according to claim 4, it is characterised in that top connection and center-pole are threadably secured peace
It is fitted together；Or/and at least sealing ring together is installed between top connection and center-pole；Between lower plug and center-pole
At least one of sealing ring is installed；Or/and at least one seal mounting groove is provided with the lower outside of lower plug, close
Vulcanization sealing ring is installed in sealing mounting groove.
12. down-hole fishing device according to claim 5, it is characterised in that top connection and center-pole are threadably secured peace
It is fitted together；Or/and at least sealing ring together is installed between top connection and center-pole；Between lower plug and center-pole
At least one of sealing ring is installed；Or/and at least one seal mounting groove is provided with the lower outside of lower plug, close
Vulcanization sealing ring is installed in sealing mounting groove.
13. down-hole fishing device according to claim 7, it is characterised in that top connection and center-pole are threadably secured peace
It is fitted together；Or/and at least sealing ring together is installed between top connection and center-pole；Between lower plug and center-pole
At least one of sealing ring is installed；Or/and at least one seal mounting groove is provided with the lower outside of lower plug, close
Vulcanization sealing ring is installed in sealing mounting groove.
14. down-hole fishing device according to claim 8, it is characterised in that top connection and center-pole are threadably secured peace
It is fitted together；Or/and at least sealing ring together is installed between top connection and center-pole；Between lower plug and center-pole
At least one of sealing ring is installed；Or/and at least one seal mounting groove is provided with the lower outside of lower plug, close
Vulcanization sealing ring is installed in sealing mounting groove.
15. down-hole fishing device according to claim 9, it is characterised in that top connection and center-pole are threadably secured peace
It is fitted together；Or/and at least sealing ring together is installed between top connection and center-pole；Between lower plug and center-pole
At least one of sealing ring is installed；Or/and at least one seal mounting groove is provided with the lower outside of lower plug, close
Vulcanization sealing ring is installed in sealing mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289677.0U CN206903622U (en) | 2017-03-23 | 2017-03-23 | Down-hole fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720289677.0U CN206903622U (en) | 2017-03-23 | 2017-03-23 | Down-hole fishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903622U true CN206903622U (en) | 2018-01-19 |
Family
ID=61295056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720289677.0U Expired - Fee Related CN206903622U (en) | 2017-03-23 | 2017-03-23 | Down-hole fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206903622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805405A (en) * | 2019-10-15 | 2020-02-18 | 中煤科工集团西安研究院有限公司 | Internal clamping type drill rod fishing tool and fishing method thereof |
-
2017
- 2017-03-23 CN CN201720289677.0U patent/CN206903622U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805405A (en) * | 2019-10-15 | 2020-02-18 | 中煤科工集团西安研究院有限公司 | Internal clamping type drill rod fishing tool and fishing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213868B (en) | Desirable bore anchor packer | |
| CN102979472B (en) | Expansion hanger | |
| CN206693997U (en) | Oil field separates adopts technology tubular column | |
| CN103321604A (en) | Packer with safety valve | |
| CN104074491A (en) | Oil pipe bridge plug | |
| CN104047563B (en) | Deblocking packer is pressed under hydraulic setting | |
| CN206903622U (en) | Down-hole fishing device | |
| CN204002734U (en) | A kind of pneumatic setting restriction choke | |
| CN208734311U (en) | A kind of permanent type well completion packer that mechanical can be given up | |
| CN206376810U (en) | Long packing element packer for oil field isolation | |
| CN103742099A (en) | Perforation, fracturing, sealing and separating device | |
| CN201474678U (en) | Sand control pipe string for sand washing and packing | |
| CN102268974B (en) | Special tail pipe hanging packing assembly for shallow horizontal well | |
| CN104329046A (en) | Rotary hydraulic packer | |
| CN103470209B (en) | Reliable packer | |
| CN204252930U (en) | Fracturing packer | |
| CN203742530U (en) | Suspension packer | |
| CN202731772U (en) | Clamping and supporting ring control suspension type blowout prevention connecting-tripping device | |
| CN105114021A (en) | Hanging sealer for installing velocity string in oil pipe and feeding and recovering tool of hanging sealer | |
| CN203022686U (en) | Removable bridge plug | |
| CN202745798U (en) | Directional well zonal injection centralizing packer | |
| CN102022092B (en) | Open hole packer and tapping tool used together with same | |
| CN202047783U (en) | Open hole packer and hole opening tool mated with same for use | |
| CN202370464U (en) | Fixture block type releasing connector | |
| CN204163680U (en) | A kind of rotating hydraulic packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20210323 |