CN205714062U - Fishing tool in salt well closure transformation pit shaft - Google Patents
Fishing tool in salt well closure transformation pit shaft Download PDFInfo
- Publication number
- CN205714062U CN205714062U CN201620402505.5U CN201620402505U CN205714062U CN 205714062 U CN205714062 U CN 205714062U CN 201620402505 U CN201620402505 U CN 201620402505U CN 205714062 U CN205714062 U CN 205714062U
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- China
- Prior art keywords
- well
- retaining wall
- pit shaft
- strong magnetic
- kicker magnet
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Abstract
This utility model relates to salt well closure renovation technique field, and fishing tool in particularly a kind of salt well closure transformation pit shaft, including the tubular kicker magnet adapted with pit shaft and hollow barrel-type retaining wall, described hollow barrel-type retaining wall is connected to tubular kicker magnet lower end；Being fixed with some strong magnetic stripes inside described hollow barrel-type retaining wall, the absorption affinity of described kicker magnet is more than the absorption affinity of strong magnetic stripe.After using said structure, in salt well of the present utility model closure transformation pit shaft, fishing tool attracts, by the strong magnetic stripe on kicker magnet and tubular retaining wall, the well cutter that falls, can uprightly enter strong magnetic cylinder, retaining wall can effectively prevent instrument in lifting process owing to accumbency highlights the well that again falls by the step stop at well expansion, causes salvaging unsuccessfully.
Description
Technical field
This utility model relates to salt well closure renovation technique field, in particularly a kind of salt well closure transformation pit shaft
Fishing tool.
Background technology
The pit shaft having air-tightness to require carries out closure transformation, if select segmentation forging milling, only forging milling needs to forge milling
Part, remainder needs to protect its integrity and sealing as far as possible.During segmentation forging milling or reaming hole,
If forging milling cutter or reaming hole cutter fall well accidentally, shown in situation below figure 1a now and Fig. 1 b, cutter is long
Degree more than casing inner diameter, cutter can only oblique cutting in sleeve pipe.Owing to the well cutter that falls has alloy component, and and well
Connect without fixing between end cement surface, it is impossible to use the method commonly milled first to destroy and salvage again.If using general
Logical tubular claw fishing tool, needs during lower brill to pressurize shaft bottom so that lost tool can be grabbed, there is wind
If danger is to be not aligned with pressurization, can make well cutter the most stuck with casing wall, increase and salvage difficulty.
Chinese invention patent CN 105178902 A discloses a kind of lifting type fishing tool, including outer cylinder body,
Inner barrel, lifting cylinder, lifting member, magnetic core and self-styled parts, content carries and being set in described outer cylinder body,
Annular channel is formed between outer cylinder body and inner barrel；Lifting cylinder is located in the inner chamber of inner barrel vertically, lifts
Having lifting chamber in rising cylinder, annular channel extends to lift bottom chamber and connects with lifting chamber, lifting member energy
Enough being arranged in axially slidably lifts in chamber；Can adsorb the magnetic core of trouble of lost tool in hole, magnetic core is connected with lifting member；
Self-styled parts are connected to below outer cylinder body, and can be drawn in by pressurized.Although, this invention is by arranging magnetic core
Adsorb the magnetic junk of down-hole, lift the down-hole of magnetic core and absorption by arranging lifting cylinder and lifting member
Junk, after magnetic core and trouble of lost tool in hole being lifted in the inner chamber in bucket, can press down fishing string to make self-styled parts
Draw in self-styled, fish for as adsorbed trouble of lost tool in hole, prevent the trouble of lost tool in hole secondary salvaged from dropping, when pressing down
Magnetic core will not be damaged；But, the structure of this invention is complex and high cost.
Summary of the invention
This utility model technical issues that need to address provide a kind of efficient and easy salt well closure transformation well
Fishing tool in cylinder.
For solving above-mentioned technical problem, fishing tool in salt well of the present utility model closure transformation pit shaft, bag
Including the tubular kicker magnet and hollow barrel-type retaining wall adapted with pit shaft, described hollow barrel-type retaining wall is connected to tubular
Kicker magnet lower end；Some strong magnetic stripes, the absorption affinity of described kicker magnet it is fixed with inside described hollow barrel-type retaining wall
Absorption affinity more than strong magnetic stripe.
Further, described strong magnetic stripe is evenly distributed along hollow barrel-type retaining wall inner circumferential.
After using said structure, in salt well of the present utility model closure transformation pit shaft, fishing tool passes through kicker magnet
The well cutter that falls is attracted so that it is can uprightly enter strong magnetic cylinder, retaining wall can be the most anti-with the strong magnetic stripe on tubular retaining wall
Only instrument is stopped and the well that again falls by the step at well expansion owing to accumbency is prominent in lifting process, causes
Salvage unsuccessfully.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 a is this utility model salt well closure transformation forging milling process schematic.
Fig. 1 b is this utility model salt well closure transformation reaming hole process schematic.
When Fig. 1 c is the closure transformation of this utility model salt well, in pit shaft, process schematic salvaged by instrument.
Fig. 2 is the structural representation of fishing tool in this utility model salt well closure transformation pit shaft.
Fig. 3 a is that this utility model only has kicker magnet to adsorb to fall the structural representation of well cutter situation one.
Fig. 3 b is that this utility model only has kicker magnet to adsorb to fall the structural representation of well cutter situation two.
Fig. 3 c be this utility model salt well closure transformation pit shaft in fishing tool absorption fall well cutter structure show
It is intended to.
In figure: 1 is pit shaft, 2 is forging groove milling, and 3 is cutter, and 4 is cement plug, and 5 is reaming hole groove, and 6 is upper
At reaming hole, 7 is at lower contracting eye, and 8 is kicker magnet, and 9 is retaining wall, and 10 is strong magnetic stripe
Detailed description of the invention
As illustrated in figs. ia and ib, during salt well closure transformation, the cement plug in pit shaft 1 is needed
Carry out above in the of 4 forging milling and reaming hole, on cutter 3 arrives at reaming hole 6 time open, cutter 3 big across length
Diameter d in pit shaft 1.First in pit shaft 1, carry out forging milling form forging groove milling 2, expand the most further
Eye-shaped becomes reaming hole groove 5, under so being formed between reaming hole groove 5 and cement plug 4 at contracting eye 7.
As illustrated in figure 1 c, when salvaging well cutter 3, when fall well cutter 3 through at lower contracting eye 7 time, by
Big in the space of reaming hole groove 5, the well cutter 3 that falls will extend and come, the well cutter 3 that so falls across length
More than the diameter d of 6 at upper reaming hole, thus can cause falling well cutter 3 to be blocked and the well that again falls, cause beating
Drag for unsuccessfully.
As in figure 2 it is shown, salt well of the present utility model closure transformation pit shaft in fishing tool, including with pit shaft phase
The tubular kicker magnet 8 adapted to and hollow barrel-type retaining wall 9, so can protect tubular kicker magnet 8 and hollow barrel-type
The entirety of wall 9 is transferred to the Jing Daojuchu that falls along pit shaft.Described hollow barrel-type retaining wall 9 is connected to the strong magnetic of tubular
Body 8 lower end；Some strong magnetic stripes 10, the suction of described kicker magnet 8 it is fixed with inside described hollow barrel-type retaining wall 9
Attached power is more than the absorption affinity summation of strong magnetic stripe 10.So when hollow barrel-type retaining wall 9 arrives well cutter 3
Waiting, the absorption affinity of kicker magnet 8 is relatively big, and the well cutter 3 that falls can be adsorbed straight up；Falling, well cutter 3 exists
During being adsorbed moving up, the well cutter 3 that falls can be adsorbed the inwall at tubular retaining wall 9 by kicker magnet 10
On, effective anti-falling stop well cutter 3 is stopped and the well that again falls by the step at well expansion owing to accumbency is prominent.
As shown in Figure 3 a, without when arranging tubular retaining wall 9, the well cutter 3 that falls meeting only one of which point is by kicker magnet
8 absorption, so during promoting well cutter by kicker magnet 8, the well cutter 3 that falls meeting double swerve,
Can again fall in well during rocking.As shown in Figure 3 b, without when arranging tubular retaining wall 9,
The well cutter 3 that falls also can laterally overall be adsorbed by kicker magnet 8, but during rising, fall well cutter 3
Across length still can more than the diameter d of 6 at upper reaming hole, thus can cause falling well cutter 3 to be blocked and again
Secondary fall well, cause salvaging unsuccessfully.
Further, described strong magnetic stripe 10 is evenly distributed along hollow barrel-type retaining wall 9 inner circumferential, such as Fig. 3 c institute
Show, so can preferably the well cutter 3 that falls be adsorbed in tubular retaining wall 9.
Operation principle of the present utility model is as follows: as shown in Figure 3 c, falls after well when there being cutter, it is necessary first to use
Common claw instrument enters well, and behind in-position, turning tool stuck with casing wall enters well cutter to stir,
Can be successfully by strong magnetic attraction.Enter down kicker magnet 8 and the entirety of hollow barrel-type retaining wall 9, by force
Strong magnetic stripe on magnet 8 and tubular retaining wall 9 attracts the well cutter 3 that falls so that it is can uprightly enter strong magnetic cylinder, tubular
Retaining wall 9 can effectively prevent instrument in lifting process owing to accumbency is prominent by the step stop at well expansion
Fall well again, causes salvaging unsuccessfully.
Although the foregoing describing detailed description of the invention of the present utility model, but those skilled in the art should
Understanding, these are merely illustrative of, and present embodiment can be made various changes or modifications, without departing from
The principle of utility model and essence, protection domain of the present utility model is only limited by the claims that follow.
Claims (2)
1. fishing tool in salt well closure transformation pit shaft, it is characterised in that: include adapting with pit shaft
Tubular kicker magnet and hollow barrel-type retaining wall, described hollow barrel-type retaining wall is connected to tubular kicker magnet lower end；Institute
Stating and be fixed with some strong magnetic stripes inside hollow barrel-type retaining wall, the absorption affinity of described kicker magnet is more than strong magnetic stripe
Absorption affinity.
2. according to fishing tool in the salt well closure transformation pit shaft described in claim 1, it is characterised in that: institute
State strong magnetic stripe evenly distributed along hollow barrel-type retaining wall inner circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620402505.5U CN205714062U (en) | 2016-05-05 | 2016-05-05 | Fishing tool in salt well closure transformation pit shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620402505.5U CN205714062U (en) | 2016-05-05 | 2016-05-05 | Fishing tool in salt well closure transformation pit shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714062U true CN205714062U (en) | 2016-11-23 |
Family
ID=57303763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620402505.5U Active CN205714062U (en) | 2016-05-05 | 2016-05-05 | Fishing tool in salt well closure transformation pit shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863542A (en) * | 2016-05-05 | 2016-08-17 | 中盐金坛盐化有限责任公司 | In-wellbore fishing tool for salt well blocking improvement |
-
2016
- 2016-05-05 CN CN201620402505.5U patent/CN205714062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863542A (en) * | 2016-05-05 | 2016-08-17 | 中盐金坛盐化有限责任公司 | In-wellbore fishing tool for salt well blocking improvement |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |