CN205422603U - Multi -functional tieback instrument - Google Patents
Multi -functional tieback instrument Download PDFInfo
- Publication number
- CN205422603U CN205422603U CN201521004599.2U CN201521004599U CN205422603U CN 205422603 U CN205422603 U CN 205422603U CN 201521004599 U CN201521004599 U CN 201521004599U CN 205422603 U CN205422603 U CN 205422603U
- Authority
- CN
- China
- Prior art keywords
- functional
- annular grooves
- tie back
- tieback
- back tool
- 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
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Abstract
The utility model discloses multi -functional tieback instrument relates to oil gas well production facility technical field. Its purpose is in order to provide simple structure, with low costs, the multi -functional tieback instrument that can be suitable for different cover internal diameter of pipes. The utility model discloses multi -functional tieback instrument includes body and sealing washer, and the body upper end is provided with the internal thread, and the lower extreme be the plug, and the body outer wall from top to bottom is provided with a plurality of annular grooves that are used for installing the sealing washer, wherein the groove of a plurality of annular grooves push up the diameter by last under to the gradient reduce. Multi -functional tieback instrument adopts the multiunit sealing washer, has ensured sealed effect, the bevelled shape plug possesses the direction function, has improved and has inserted the success rate, the diameter of multiunit annular groove is the gradient under to and is reduced by last, can insert different specification model's butt joint sleeve pipe, has avoided not knowing to take over the internal diameter and plays the problem of tieback instrument down repeatedly, has reduced manufacturing cost simultaneously.
Description
Technical field
This utility model relates to Oil/gas Well and produces equipment technical field, particularly relates to a kind of multi-functional tie back tool.
Background technology
Along with socioeconomic high speed development, oil-gas field development technology has obtained developing the most rapidly, in order to improve recovery ratio, and the most a lot of horizontal well selection level well subsection acidizing pressure break barefoot completion modes.In implementing acid fracturing volume increase work progress, need after completing to give up to shaft bottom under barefoot completion tubing string to utilize multi-functional tie back tool be attached in returning the tie back stem of this completion tubular column slotting and seal, meet the requirement of pressure break and production.In construction multi-functional tie back tool be high temperature, high pressure special environment under work, the most traditional multi-functional tie back tool is cut and is conventional type, seal member is directly to process seal groove on multi-functional tie back tool or process seal groove on sealing ring, installation O or v shaped ring is relied on to complete sealing task, but the instrument tieback of different latus rectum cannot be solved, operation removes the problem of multi-functional tie back tool tubing string repeatedly because not knowing down-hole tie back stem internal diameter often, has a strong impact on production and causes security incident.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, low cost, can be suitable for the multi-functional tie back tool of different casing inner diameter.
The multi-functional tie back tool of this utility model, including body and sealing ring, body upper end is provided with female thread, and lower end is plug, body outer wall is from top to bottom provided with multiple annular groove for installing sealing ring, it is characterised in that: the groove top diameter gradient from top to bottom of the plurality of annular groove reduces.
The multi-functional tie back tool of this utility model, in plurality of annular groove, two adjacent annular grooves are one group, and the groove top diameter with two annular grooves of group is identical, and the groove top diameter gradient from top to bottom of many group annular grooves reduces.
The multi-functional tie back tool of this utility model, in wherein said many group annular grooves, the groove top diameter gradient of upper and lower two groups of annular grooves reduces in the range of 1～2mm.
The multi-functional tie back tool of this utility model, wherein said with being spaced 10mm between two annular grooves of group, interval 20mm between upper and lower two groups of annular grooves, the annular groove degree of depth is 5mm, and width is 12mm.
The multi-functional tie back tool of this utility model, wherein the junction at described upper and lower two groups of annular grooves slopes inwardly formation gradient.
The multi-functional tie back tool of this utility model, the thickness range of wherein said body tube wall is 15～17mm.
The multi-functional tie back tool of this utility model, wherein said plug is scarf, and plug length scope is 50～60mm.
This utility model multi-functional tie back tool difference from prior art is this utility model multi-functional tie back tool multi-functional tie back tool of this utility model, uses and organizes sealing ring, multi-stage sealed form, it is ensured that sealing effectiveness more.
This utility model multi-functional tie back tool scarf plug, possesses guide function, can be sent directly into by tie back stem and put in place, improve success rate.
The diameter of the multi-functional tie back tool of this utility model multi-functional tie back tool many groups annular groove reduces the most in gradient, it is designed as gradual Taiwan independence step seal, may be inserted in the docking sleeve pipe of different size model, avoid the problem not knowing adapter internal diameter and repeatedly remove multi-functional tie back tool, it is suitable for the sleeve pipe of different size simultaneously, one tube multipurpose, decreases manufacturing cost.
Below in conjunction with the accompanying drawings multi-functional tie back tool of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the sectional view of the multi-functional tie back tool of this utility model；
Fig. 2 is the partial enlarged drawing in Fig. 1 at I.
Detailed description of the invention
As shown in Figure 1, the multi-functional tie back tool of this utility model includes that body 1 and sealing ring, body upper end are provided with female thread 2, and lower end is plug 3, body outer wall is from top to bottom provided with multiple annular groove 4 for installing sealing ring, and the groove top diameter gradient from top to bottom of multiple annular grooves reduces.
As in figure 2 it is shown, two annular grooves are one group (in dashed circle), the groove top diameter with two annular grooves of group is identical, and the groove top diameter gradient from top to bottom of many group annular grooves reduces.Between upper and lower two groups, the groove top diameter gradient of annular groove reduces in the range of 1～2mm.The annular groove degree of depth is 5mm, and width is 12mm, with being spaced 10mm between two annular grooves of group, is spaced 20mm between upper and lower two groups of annular grooves.Slope inwardly formation gradient in the junction of upper and lower two groups of annular grooves.
The thickness range of body tube wall is set to 15～17mm.Plug is scarf, and plug length scope is 50～60mm.
For different casing inner diameters, arranging groove top maximum gauge and the minimum diameter of annular groove, the groove top diameter maximum of annular groove can seal big casing inner diameter, can seal small casing internal diameter at diameter minimum.Such as, casing inner diameter scope is when 114～125mm, uppermost two a diameter of 127mm in annular groove groove top of multi-functional tie back tool can be set, the groove top diameter the most often organizing annular groove is decremented to 125mm, 124mm, 123mm, 121mm, 120mm, 119mm, 117mm, 115mm, 114mm successively, arranges 10 groups of annular grooves in order to seal the sleeve pipe of different inner diameters.
During use, can directly under enter multi-functional tie back tool, it is not necessary to verify the size of down-hole casing again.Multi-functional tie back tool can be reused, and carries out maintaining and changing sealing ring before entering well every time.
The multi-functional tie back tool of this utility model, uses and organizes sealing ring, multi-stage sealed form, it is ensured that sealing effectiveness more；Scarf plug, possesses guide function, can be sent directly into by multi-functional tie back tool and put in place, improve success rate；The diameter of multi-functional tie back tool many groups annular groove reduces the most in gradient, it is designed as gradual Taiwan independence step seal, may be inserted in the docking sleeve pipe of different size model, avoid the problem not knowing adapter internal diameter and repeatedly remove tie back tool, it is suitable for the sleeve pipe of different size simultaneously, one tube multipurpose, decreases manufacturing cost.
Embodiment described above is only to be described preferred implementation of the present utility model; not scope of the present utility model is defined; on the premise of without departing from this utility model design spirit; various deformation that the technical solution of the utility model is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that this utility model claims determine.
Claims (7)
1. a multi-functional tie back tool, including body and sealing ring, body upper end is provided with female thread, and lower end is plug, body outer wall is from top to bottom provided with multiple annular groove for installing sealing ring, it is characterised in that: the groove top diameter gradient from top to bottom of the plurality of annular groove reduces.
Multi-functional tie back tool the most according to claim 1, it is characterized in that: in the plurality of annular groove, two adjacent annular grooves are one group, groove top diameter with two annular grooves of group is identical, and the groove top diameter gradient from top to bottom of many group annular grooves reduces.
Multi-functional tie back tool the most according to claim 2, it is characterised in that: in described many group annular grooves, the groove top diameter gradient of upper and lower two groups of annular grooves reduces in the range of 1～2mm.
Multi-functional tie back tool the most according to claim 3, it is characterised in that: described with being spaced 10mm between two annular grooves of group, interval 20mm between upper and lower two groups of annular grooves, the annular groove degree of depth is 5mm, and width is 12mm.
Multi-functional tie back tool the most according to claim 4, it is characterised in that: slope inwardly formation gradient in the junction of described upper and lower two groups of annular grooves.
Multi-functional tie back tool the most according to claim 1, it is characterised in that: the thickness range of described body tube wall is 15～17mm.
Multi-functional tie back tool the most according to claim 1, it is characterised in that: described plug is scarf, and plug length scope is 50～60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521004599.2U CN205422603U (en) | 2015-12-07 | 2015-12-07 | Multi -functional tieback instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521004599.2U CN205422603U (en) | 2015-12-07 | 2015-12-07 | Multi -functional tieback instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205422603U true CN205422603U (en) | 2016-08-03 |
Family
ID=56515050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521004599.2U Expired - Fee Related CN205422603U (en) | 2015-12-07 | 2015-12-07 | Multi -functional tieback instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205422603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
-
2015
- 2015-12-07 CN CN201521004599.2U patent/CN205422603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796695A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Back-inserting mechanism of split type well completion packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20181207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |