CN206418989U - A kind of safe die nipple - Google Patents
A kind of safe die nipple Download PDFInfo
- Publication number
- CN206418989U CN206418989U CN201621125855.8U CN201621125855U CN206418989U CN 206418989 U CN206418989 U CN 206418989U CN 201621125855 U CN201621125855 U CN 201621125855U CN 206418989 U CN206418989 U CN 206418989U
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- CN
- China
- Prior art keywords
- die nipple
- outer barrel
- fuse
- safe
- pin
- 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.)
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Abstract
Safe die nipple of the present utility model is a kind of underground well workover fishing tool, it is that the split-type structural of the screwed connection of existing die nipple and track type safety joints is changed to safety joint fuse and die nipple integral structure, it is characterized in that being made up of outer barrel (1), die nipple fuse (2), pin (3), sealing ring (4), there is closing piece (7) inside outer barrel (1) cylinder, outer barrel (1) and die nipple fuse (2) are by closing piece (7), pin (3) spacing fixation.Die nipple is integrated with safety joint to replace screwed connection reduction outside dimension to improve bonding strength.There is pin thread safety joint outer barrel lower end, can be connected with guide shoe cylinder or casing section mill, realizes that safety is salvaged or set milling.Safe fishing oil pipe is used in fishing combined tool, particularly four inch sleeve pipes in tubing junk during being salvaged suitable for oil well.
Description
Technical field：
The purpose of this utility model is to provide a kind of underground well workover fishing tool, it is adaptable to which oil well is managed during salvaging
Safe fishing oil pipe is used in fishing combined tool in class junk, particularly four inch sleeve pipes.
Background technology：
Current oil field adds track type safety joints when the set well workover of four inch is salvaged using die nipple, if die nipple is dragged for after oil pipe,
Due to sand bury oil pipe can not open buckle when, track type safety joints are slipped out of the hand, and leave safety joint fuse and die nipple in underground, due to
Safety joint fuse and die nipple screwed connection, its junction external diameter are larger, and can not find suitable casing section mill in four inch set exists
Safety joint fuse is not injured oil pipe is buried by sand with covering milling on the premise of die nipple thread, cause down-hole accident to complicate.For
This present invention proposes a kind of safe die nipple, that is, removes junction button, and safety joint fuse is integrated with die nipple.Safety joint outer barrel
There is pin thread lower end, can be connected with guide shoe cylinder or casing section mill, realizes that safety is salvaged or set milling.
The content of the invention：
The purpose of this utility model is to provide a kind of safe die nipple (such as Fig. 1), by outer barrel 1, die nipple fuse 2, pin 3, close
Seal 4 is constituted.The upper end of outer barrel 1 is box 5, and it is identical that button-type salvages drilling rod button-type with connection；Lower end is pin thread 6, can connect and draw
Footwear cylinder or casing section mill；Cylinder is internal closing piece 7.The lower end of die nipple fuse 2 is die nipple part 8；Centre is column part 9, and upper end is rail
, inside there is hydrophthalmia 11 road part 10；Die nipple fuse 2 is processed by a cylindrical rod, and its maximum outside diameter is equal to fishing oil pipe sheet
External footpath.Outer barrel 1 and die nipple fuse 2 are by closing piece 7, the spacing fixation of pin 3, and sealing ring 4 seals fluid in cylinder.Existing salvaging work
Skill is combined using die nipple with safety joint, is to be connected by the box and pin of drilling rod button-type under die nipple top and safety joint fuse
Portion, its external diameter is more than the external diameter of column part 9, i.e., more than fishing oil pipe body external diameter, can not select suitable in four inch set
Casing section mill set milling passes through die nipple and the junction button of safety joint.Die nipple is integrated with safety joint to replace screwed connection to reduce external diameter
Size improves bonding strength.
Brief description of the drawings：
Fig. 1：Safe die nipple structural representation
1st, outer barrel 2, die nipple fuse 3, pin 4, sealing ring 5, outer barrel box 6, outer barrel pin thread 7, closing piece 8, die nipple
Part 9, column part 10, rail portion 11, hydrophthalmia
Embodiment：
Safe die nipple (such as Fig. 1), is made up of outer barrel 1, die nipple fuse 2, pin 3, sealing ring 4.The upper end of outer barrel 1 is box 5,
It is identical that button-type salvages drilling rod button-type with connection；Lower end is pin thread 6, can connect guide shoe cylinder or casing section mill；Cylinder is internal closing piece 7.
The lower end of die nipple fuse 2 is die nipple part 8；Centre is column part 9, and upper end is rail portion 10, inside there is hydrophthalmia 11；Die nipple fuse
2 are processed by a cylindrical rod, and its maximum outside diameter is equal to fishing oil pipe body external diameter.Outer barrel 1 and die nipple fuse 2 are by closing piece
7th, the spacing fixation of pin 3, sealing ring 4 seals fluid in cylinder.Assembling tool when using, die nipple fuse 2 along closing piece 7 and track
10 fit into outer barrel 1, install sealing ring 4 and pin 3.When going into the well, the upper end box 5 of safe die nipple is with salvaging drilling rod thread
Connection, continues tripping in drilling rod until safe die nipple lower contacts tubulose TOF, and turn on pump rinses pressurization rotation back-off after top of fish,
Pulled out of hole after opening and complete to salvage.Drilling tool is above carried if not opening, pin is broken and falls out safe die nipple outer barrel, then milling jacket casing of trapping
Milling.The safe die nipple fuse played again under outer barrel butt shaft after set milling continues back-off and salvaged.Its advantage is that can not judge that underground falls
Safe die nipple back-off under whether thing is direct in the case of being buried by sand, can avoid accident from complicating.Its outer barrel lower end pin thread is with drawing
Footwear cylinder or casing section mill are connected, and are even more that can improve salvaging timeliness, improve well workover benefit.
Claims (4)
1. a kind of safe die nipple, it is characterized in that being made up of outer barrel (1), die nipple fuse (2), pin (3), sealing ring (4), outer barrel
(1) there is closing piece (7) inside cylinder, outer barrel (1) and die nipple fuse (2) are by closing piece (7), pin (3) spacing fixation.
2. safe die nipple according to claim 1, it is characterized in that die nipple fuse (2) lower end is die nipple part (8), centre is
Column part (9), upper end is rail portion (10), inside there is hydrophthalmia (11).
3. safe die nipple according to claim 1, it is characterized in that outer barrel (1) upper end is box (5), button-type is with being connected salvaging
Drilling rod button-type is identical；Lower end is pin thread (6), can connect guide shoe cylinder or casing section mill.
4. safe die nipple according to claim 1, it is characterized in that die nipple fuse (2) is processed by a cylindrical rod,
Its maximum outside diameter is equal to fishing oil pipe body external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125855.8U CN206418989U (en) | 2016-10-17 | 2016-10-17 | A kind of safe die nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125855.8U CN206418989U (en) | 2016-10-17 | 2016-10-17 | A kind of safe die nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206418989U true CN206418989U (en) | 2017-08-18 |
Family
ID=59578181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621125855.8U Active CN206418989U (en) | 2016-10-17 | 2016-10-17 | A kind of safe die nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206418989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083610A (en) * | 2018-09-21 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | Reversible fishing tap |
-
2016
- 2016-10-17 CN CN201621125855.8U patent/CN206418989U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083610A (en) * | 2018-09-21 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | Reversible fishing tap |
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