CN205172497U - Mechanical type internal cutter - Google Patents
Mechanical type internal cutter Download PDFInfo
- Publication number
- CN205172497U CN205172497U CN201520831469.XU CN201520831469U CN205172497U CN 205172497 U CN205172497 U CN 205172497U CN 201520831469 U CN201520831469 U CN 201520831469U CN 205172497 U CN205172497 U CN 205172497U
- Authority
- CN
- China
- Prior art keywords
- dovetail
- slip insert
- rod
- junk
- cutter
- 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 relates to a mechanical type internal cutter belongs to oil field borehole operation well repair tool technical field. The utility model discloses a top connection, the body of rod, slip insert, cutting knife, the lower part is cone reducing section in the body of rod, is equipped with the dovetail slideway on its cone reducing section, installs two slip insert on the dovetail guide, slip insert opens the dovetail that has lateral inclination in the middle part, installs the cutting knife in its dovetail, the terminal department of the dovetail guide of body of rod lower extreme is equipped with a horizontal dovetail to install the locking piece, and by the fix with screw. Using the utility model discloses when implementing the cutting to the tubulose junk, the body of rod carries cutting knife entering fish chamber and cuts the position on schedule, lifts the tubular column and makes slip insert hug closely the junk inner wall, revolves the rotating -barrel post and forces the continuous wedging pipe inner wall of cutting knife, until cutting off the tubular column, continues to lift the tubular column, and slip insert tightly catches and is cut off the body, pulls the junk out to can avoid overlapping at sleeve pipe reducing section and mill the construction, reach and prevent the sleeve pipe purpose of windowing.
Description
Technical field
The utility model relates to a kind of mechanical type internal cutter, is applicable to cut off process to tubulose junk in sleeve pipe, belongs to oilfield downhole operation workover tool technical field.
Background technology
Shaking out after the breakage of process Casing Failure causes tubing string sand to bury in the well workover work progress of lock of tool drilling, the normal method of cover milling back-off segmental salvage that adopts implements unfreezing fishing to sand pipe laying post, namely first employing cover milling method removes the long-pending sand between one section of stuck pipe shape junk and sleeve pipe, implement back-off to this section of stuck pipe shape junk again to salvage, so repeatedly repeat, until junk is all pulled out.But, generally there is sleeve shrinking diameter at casing damage place more, in sleeve shrinking diameter section, carry out cover milling construction easily cause casing sidetracking, even cause pit shaft to scrap.For this reason, need a kind of internal cutter, below sleeve shrinking diameter section, stuck pipe shape junk is directly cut off and pull out, avoid carrying out cover milling construction in sleeve shrinking diameter section, thus prevent casing sidetracking.
Patent No. CN204449465U discloses a kind of mechanical type internal cutter, its structure comprises central axis, cutting tool, cutter switch, anchoring device, because of its need grappling after just can cut, and its grappling be rely on slip insert nip tube wall realize, if the inner serious scale of cut tubulose junk, slip insert then may be made cannot to nip tube wall or nip insecure, cause can not grappling or may in cutting process grappling catastrophic failure, cause cutting unsuccessfully.
Utility model content
The utility model object is to overcome above-mentioned prior art to the defect can not implementing cutting to the tubulose junk of inwall serious scale existed during the cutting process of tubulose junk, providing a kind of mechanical type internal cutter.
The utility model comprises top connection, the body of rod, slip insert, cutter, and body of rod middle and lower part is cone undergauge section, its cone undergauge section is provided with dovetail slideway, its dovetail slideway is provided with slip insert; Have the dovetail groove of lateral inclination in the middle part of slip insert, in its dovetail groove, cutter is installed.
The cone undergauge section of described body of rod middle and lower part is provided with at least two symmetrical dovetail slideways, is provided with slip insert at its dovetail slideway; Have the dovetail groove of lateral inclination in the middle part of slip insert, in its dovetail groove, cutter is installed.
The end of the dovetail slideway of described body of rod bottom is provided with a horizontal dovetail groove, and is provided with lock dog, and is fixed by screw, and slip insert can be stoped freely to skid off dovetail slideway.
Described body of rod lower end is taper guide head.
When using the utility model to implement cutting to tubulose junk, the body of rod carries cutter and enters predetermined cuts position, fish chamber, upper lifting pipe post makes slip insert be close to junk inwall, rotate tubing string and force the continuous wedging inboard wall of tube body of cutter, until cut off tubing string, continue upper lifting pipe post, slip insert holds on to and is cut off body, pull junk out, thus can avoid carrying out cover milling construction in sleeve shrinking diameter section, reach and prevent casing sidetracking object.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the A-A sectional view of the utility model embodiment.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the utility model comprises top connection 1, the body of rod 2, slip insert 3, cutter 4, and the body of rod 2 middle and lower part is cone undergauge section, its cone undergauge section is provided with dovetail slideway 21, its dovetail slideway 21 is provided with slip insert 3; Have the dovetail groove 31 of lateral inclination in the middle part of slip insert 3, in its dovetail groove 31, cutter 4 is installed.
The cone undergauge section of the described body of rod 2 middle and lower part is provided with at least two symmetrical dovetail slideways 21, is provided with slip insert 3 at its dovetail slideway 21; Have the dovetail groove 31 of lateral inclination in the middle part of slip insert 3, in its dovetail groove 31, cutter 4 is installed.
The end of the dovetail slideway 21 of the described body of rod 2 bottom is provided with a horizontal dovetail groove 22, and is provided with lock dog 5, and is fixed by screw 6, and slip insert 3 can be stoped freely to skid off dovetail slideway 21.
The described body of rod 2 lower end is taper guide head.
When using the utility model to implement cutting to tubulose junk, top connection 1 is connected down to top of fish with fishing string, tubing string is transferred in turn on pump circulation, make the body of rod 2 carry cutter 4 and enter fish chamber, and to predetermined cuts position, during upper lifting pipe post, dovetail slideway 21 inclined-plane in the cone undergauge section of the body of rod 2 middle and lower part moves upward produced radial component, slip insert 3 is forced to be close to pipe string internal wall, rotate tubing string, force cutter 4 wedging pipe string internal wall, under the guiding on dovetail groove 31 inclined-plane of the lateral inclination simultaneously in the middle part of slip insert 3, continuous wedging pipe string internal wall, until tubing string is cut off, stop the rotation tubing string, continue upper lifting pipe post, dovetail slideway 21 inclined-plane moves upward produced radial component, slip insert 3 is forced to be close to junk inwall, hold on to and cut off junk, pull junk out, thus can avoid carrying out cover milling construction in sleeve shrinking diameter section, reach and prevent casing sidetracking object.
Claims (4)
1. mechanical type internal cutter, comprise top connection (1), the body of rod (2), slip insert (3), cutter (4), it is characterized in that: the body of rod (2) middle and lower part is cone undergauge section, its cone undergauge section is provided with dovetail slideway (21), its dovetail slideway (21) is provided with slip insert (3); Slip insert (3) middle part has the dovetail groove (31) of lateral inclination, is provided with cutter (4) in its dovetail groove (31).
2. mechanical type internal cutter according to claim 1, is characterized in that: the cone undergauge section of the described body of rod (2) middle and lower part is provided with at least two symmetrical dovetail slideways (21), is provided with slip insert (3) at its dovetail slideway (21); Slip insert (3) middle part has the dovetail groove (31) of lateral inclination, is provided with cutter (4) in its dovetail groove (31).
3. mechanical type internal cutter according to claim 1, it is characterized in that: the end of the dovetail slideway (21) of the described body of rod (2) bottom is provided with a horizontal dovetail groove (22), and lock dog (5) is installed, and fixed by screw (6), slip insert (3) can be stoped freely to skid off dovetail slideway (21).
4. mechanical type internal cutter according to claim 1, is characterized in that: the described body of rod (2) lower end is taper guide head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831469.XU CN205172497U (en) | 2015-10-26 | 2015-10-26 | Mechanical type internal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831469.XU CN205172497U (en) | 2015-10-26 | 2015-10-26 | Mechanical type internal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172497U true CN205172497U (en) | 2016-04-20 |
Family
ID=55736500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520831469.XU Expired - Fee Related CN205172497U (en) | 2015-10-26 | 2015-10-26 | Mechanical type internal cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172497U (en) |
-
2015
- 2015-10-26 CN CN201520831469.XU patent/CN205172497U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200347687A1 (en) | Method of Removing A Downhole Casing | |
| US7757754B2 (en) | Combination motor casing and spear | |
| AU2019258528B2 (en) | Workover tool string | |
| CN104847263A (en) | Coal bed methane far-end butt joint horizontal well drilling method | |
| US10662728B2 (en) | Method and apparatus for stuck pipe mitigation | |
| CN113482561A (en) | Oil and gas well sealing casing recovery device and recovery method thereof | |
| CN105822245B (en) | Jam-releasing fishing device and method for gyro inclinometer in drill hole | |
| US11230899B2 (en) | Well abandonment and slot recovery | |
| CN202946103U (en) | Half-path well-cementing stage cementing device without drilling inner sleeve | |
| CN201090165Y (en) | Drilling bridging plug milling salvaging tool | |
| CN201883976U (en) | Down-hole pipe salvaging cylinder | |
| CN109505528B (en) | Use method of loose sand type petroleum underground safety joint | |
| CN109779538B (en) | Petroleum downhole operation device | |
| CN105545255A (en) | Novel oil-field long-acting water-exclusion-oil-exploiting pipe column | |
| CN205172497U (en) | Mechanical type internal cutter | |
| CN114293942B (en) | Milling and cutting integrated device for coiled tubing salvaging sleeve | |
| CN115162992A (en) | Small-diameter pipe column cutting and fishing integrated fishing device and method | |
| CN202266221U (en) | Salvageable bottom plug combination | |
| CN210217679U (en) | Small well bore sleeve milling, making and buckling, fishing and well repairing tool | |
| CN209761384U (en) | Device for simultaneously completing fishing and sealing operations of submarine oil well | |
| CN108301789B (en) | Casing pulling device and casing pulling method | |
| CN103821472A (en) | Fishing bottom plug and fishing tool combination for expansion pipe | |
| CN202402003U (en) | Lead sealing sand control packer for 4-inch small holes | |
| CN204212724U (en) | Integrated form coring tool | |
| CN208380523U (en) | Variable diameter pit shaft fishes out guiding device certainly |
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: 20160420 Termination date: 20171026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |