CN205089267U - Coiled tubing salvages a section of thick bamboo - Google Patents
Coiled tubing salvages a section of thick bamboo Download PDFInfo
- Publication number
- CN205089267U CN205089267U CN201520819576.0U CN201520819576U CN205089267U CN 205089267 U CN205089267 U CN 205089267U CN 201520819576 U CN201520819576 U CN 201520819576U CN 205089267 U CN205089267 U CN 205089267U
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- slips
- inner circle
- fishing socket
- guide shoe
- 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
The utility model discloses a coiled tubing salvages a section of thick bamboo can improve the easy fracture that falls into in the well, broken coiled tubing's salvage efficiency by a wide margin. Coiled tubing salvages a section of thick bamboo includes the guide shoe, and the slips dress is under in the barrel, the both ends of lower barrel respectively with last barrel and guide shoe threaded connection. Can change the guide shoe for cover miller utensil according to on -the -spot needs, like wave cover cutter head etc. Can overlap and mill falling into coiled tubing in the well. Through field test at the deep well, prove and successfully to salvage the coiled tubing who falls into sleeve pipe and sulphide stress corrosion cracking, hydrogen embrittlement fracture, reduced the degree of difficulty of salvaging the construction, increase substantially salvage speed, improved workover's progress. The utility model discloses simple structure, processing ease, the effect is reliable, has fine result of use.
Description
Technical field
The utility model relates to petroleum industry well workover fishing tool, particularly coiled tubing fishing socket, significantly can improve the salvaging efficiency of the easy fracture fallen in well, broken coiled tubing.
Background technology
Along with the extensive use of various operation techniques in each oil field of coiled tubing, in workover treatment process, happen occasionally because sand buries coiled tubing that sand card, trouble of lost tool in hole or dirt card, viscous crude or the reason such as high-content wax oil card, casing damage card the cause phenomenon taken off in well of breaking.For exposed in sleeve pipe and the more weak coiled tubing of rigidity, particularly, easily there is the phenomenon of sulfide-stress cracking, hydrogen-induced cracking, cause its tension and compressive strength greatly to reduce in the disconnected coiled tubing taken off in the Oil/gas Well that sulfur content is higher.Use conventional workover tool directly to salvage not only efficiency very low but also easily make well workover construction complexity, cause well workover claim for eot, operating cost strengthens.On-the-spot urgent need develops a kind of instrument can salvaged easy fracture, broken coiled tubing for this reason.
Summary of the invention
The purpose of this utility model is to provide coiled tubing fishing socket, and exposed in sleeve pipe and the more weak coiled tubing of rigidity for salvaging, particularly the disconnected coiled tubing taken off in the Oil/gas Well that sulfur content is higher, improves workover treatment progress, reduces workover treatment cost.
The utility model is achieved in that
Coiled tubing fishing socket comprises guide shoe, and slips is contained in lower shell, and the two ends of lower shell are threaded with upper shell and guide shoe respectively.
Described slips is cylindrical body, and cylindrical shell is provided with axial slot, and cylindrical shell bottom cylindrical is male cone (strobilus masculinus), and bottom inner circle is provided with slip insert, is horn mouth, facilitates the introduction of connected pipes below slip insert.
The utility model compared with prior art has following useful effect:
Slips is long-armed split-type slips, and its total length is several times of conventional slips, make coiled tubing by time resistance greatly reduce.Upper shell upper end is connected with continuous punching sandpipe, the step that guide shoe, slips and upper shell inside and continuous punching sandpipe inside do not hinder coiled tubing to enter.One inner conical surface is arranged at lower shell bottom, consistent with the tapering of slips 3 bottom male cone (strobilus masculinus), can produce clamping force and can to hold coiled tubing.Guide shoe upper end is box, can bear comparatively high pulling torque, guide shoe can be needed to be replaced by packaged milling tool according to scene, as waveform cover milling head etc., can carry out cover milling to the coiled tubing fallen in well.Through in the field trial of deep-well, proves successfully to salvage and fall into sleeve pipe and the coiled tubing of sulfide-stress cracking, hydrogen-induced cracking, reduce the difficulty of salvaging and constructing, increase substantially salvaging speed, improve the progress of workover treatment.The utility model structure is simple, processing ease, reliable for effect, has good result of use, economic benefit and social benefit remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail, and unrestricted protection domain of the present utility model.As shown in Figure 1, coiled tubing fishing socket comprises guide shoe 4, and slips 3 is contained in lower shell 2, and the two ends of lower shell 2 are threaded with upper shell 1 and guide shoe 4 respectively.Slips 3 is cylindrical body, and cylindrical shell is provided with axial slot, and cylindrical shell bottom cylindrical is male cone (strobilus masculinus), and bottom inner circle is provided with slip insert, is horn mouth, facilitates the introduction of connected pipes below slip insert.The cylindrical body of slips 3 is at least provided with three axial slots, top inner circle is straight tube inner circle, and its internal diameter is greater than bottom inner circle, and the total length of slips 3 is set in about 40cm-60cm, slips 3 is long-armed distinguish slips, is conducive to reducing resistance when connected pipes enters dipper.The top inner circle of upper shell 1 is connected with continuous punching sandpipe, and bottom inner circle loads slips 3, and middle part inner circle is provided with limited step, and the distance at this limited step and slips 3 top is set between 12cm-16cm.The middle part inner circle of lower shell 2 is provided with inner conical surface, and the male cone (strobilus masculinus) of this inner conical surface and slips 3 cooperatively interacts.The below of lower shell 2 inner conical surface is with it to the lower camber side on top, is conducive to coiled tubing to be introduced in slips 3.The lower end of lower shell 2 can also be connected with packaged milling tool, as waveform cover milling head etc.
Concrete use is as following:
The utility model is connected to the bottom of fishing string, and top connects continuous punching sandpipe, safety joint and drilling tool from bottom to top successively.After G.I.H, 5 ~ 10m place more than top of fish, slowly transfers fishing string and sounds out fish, rotates tubing string and coiled tubing is introduced the utility model, continues to transfer tubing string and mends lower drill pipe joint or column.Because slips 3 is long-armed split-type slips, resistance when coiled tubing passes through is very little, does not hinder the step that coiled tubing enters equally, so coiled tubing can constantly enter in this fishing socket in well in continuous punching sandpipe.Drilling depth is selected according to the compressive strength of coiled tubing in the length of upper tool part continuous punching sandpipe and anticipation well.When be hampered not obvious but drilling depth close to during continuous sand flushing length of tube should resolutely on carry, suspending weight increases, and engaging fish is described, if salvage the length increasing continuous punching sandpipe when considering that instrument is gone into the well again satisfactory for result.Because the compressive strength of coiled tubing in well is very low, be less than continuous sand flushing length of tube when drilling depth but be hampered obviously, pressurization too much easily causes situation in well complicated, salvage the aspect that raises obstacles never to lower step to consider, should resolutely pull out of hole, the consequence such as coiled tubing in sleeve pipe can not be caused to be out of shape because grasping too much, fracture.
This fishing socket, according to actual conditions, by changing the size of slips 3, changing it and salvaging effect.Change shape or the adapter sleeve milling tool of guide shoe 4, the construction object of cover milling cleaning annular space can be reached.
Claims (7)
1. coiled tubing fishing socket, comprises guide shoe, it is characterized in that, slips is contained in lower shell, and the two ends of lower shell are threaded with upper shell and guide shoe respectively.
2. coiled tubing fishing socket according to claim 1, is characterized in that, described slips is cylindrical body, and cylindrical shell is provided with axial slot, and cylindrical shell bottom cylindrical is male cone (strobilus masculinus), and bottom inner circle is provided with slip insert, is horn mouth below slip insert.
3. coiled tubing fishing socket according to claim 1 and 2, is characterized in that, the cylindrical body of described slips is at least provided with three axial slots, and top inner circle is straight tube inner circle, and its internal diameter is greater than bottom inner circle, and the total length of slips is set in 40cm-60cm.
4. coiled tubing fishing socket according to claim 1, it is characterized in that, the top inner circle of described upper shell is connected with continuous punching sandpipe, and bottom inner circle loads slips, middle part inner circle is provided with limited step, and the distance at this limited step and slips top is set between 12cm-16cm.
5. coiled tubing fishing socket according to claim 1, is characterized in that, the middle part inner circle of described lower shell is provided with inner conical surface, and the male cone (strobilus masculinus) of this inner conical surface and slips cooperatively interacts.
6. coiled tubing fishing socket according to claim 5, is characterized in that, the below of described lower shell inner conical surface is with it to the lower camber side on top.
7. coiled tubing fishing socket according to claim 1 or 5, it is characterized in that, the lower end of described lower shell can also be connected with packaged milling tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520819576.0U CN205089267U (en) | 2015-10-23 | 2015-10-23 | Coiled tubing salvages a section of thick bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520819576.0U CN205089267U (en) | 2015-10-23 | 2015-10-23 | Coiled tubing salvages a section of thick bamboo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089267U true CN205089267U (en) | 2016-03-16 |
Family
ID=55479968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520819576.0U Expired - Fee Related CN205089267U (en) | 2015-10-23 | 2015-10-23 | Coiled tubing salvages a section of thick bamboo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368640A (en) * | 2016-10-28 | 2017-02-01 | 中国石油集团渤海钻探工程有限公司 | Process method for salvaging irregular falling object in oil pipe and solving tubular column sand jam by adopting coiled tubing |
-
2015
- 2015-10-23 CN CN201520819576.0U patent/CN205089267U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368640A (en) * | 2016-10-28 | 2017-02-01 | 中国石油集团渤海钻探工程有限公司 | Process method for salvaging irregular falling object in oil pipe and solving tubular column sand jam by adopting coiled tubing |
| CN106368640B (en) * | 2016-10-28 | 2018-11-20 | 中国石油集团渤海钻探工程有限公司 | Using the process of junk and solution tubing string sand card special-shaped in coiled tubing fishing oil pipe |
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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: 20160316 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |