CN202125270U - Safe spear blanking plug - Google Patents
Safe spear blanking plug Download PDFInfo
- Publication number
- CN202125270U CN202125270U CN201120230140XU CN201120230140U CN202125270U CN 202125270 U CN202125270 U CN 202125270U CN 201120230140X U CN201120230140X U CN 201120230140XU CN 201120230140 U CN201120230140 U CN 201120230140U CN 202125270 U CN202125270 U CN 202125270U
- Authority
- CN
- China
- Prior art keywords
- safe
- spear
- blanking plug
- thread
- lock nut
- 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 - Lifetime
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Abstract
A safe spear blanking plug belongs to the field of oil field auxiliary equipment and is capable of safely fishing out an oil pipe during operation under pressure. A thread-changing connector and a safe lock nut are installed at the upper end of a central rod of the safe spear blanking plug in threaded mode, and an oil pipe clamp is arranged at the other end of the thread-changing connector. A cylindrical clip is rotatably installed outside the tension portion on a central rod in sleeving mode. A screw connection lead screw is arranged at the lower end of the central rod, and a sealed rubber tube and a guide shoe are installed on the screw connection lead screw. The safe spear blanking plug is simple in structure and convenient to install and use. The safe lock nut is arranged on the safe spear blanking plug, after the oil pipe is fished and lifted out of a well mouth, the safe lock nut is threaded with a box coupling of a fished tubular column, a spear and a blanking plug portion are locked in the fished tubular column, and underground pressure in the pipe cannot eject the spear blanking plug out, thereby ensuring construction safety.
Description
Technical field
The utility model belongs to auxiliary equipment field, oil field.
Background technology
Dragging for the lance blanking plug is a kind of special tool of oil field Operating Pressure.The present employed lance blanking plug that drags for of oil field Operating Pressure is that original reversible oil pipe drags for the lance transformation of the way and forms.This lance that drags for is being given a shock or operate miss, might withdraw from automatically, and in well, can the tool pipe of the oil that is connected together be dished out under the powerful pressure causes the accident.
Summary of the invention
The purpose of the utility model provides a kind of safety that oil pipe is pulled out that can safety in Operating Pressure operation drag for the lance blanking plug.
The center-pole upper end of the utility model is equipped with thread-changing joint and safe lock nut through screw thread; The thread-changing joint other end is a tubing thread; The outside cover of the tensioner part on center-pole revolves the cartridge type slips is installed; The center-pole lower end is that screw rod connects screw mandrel, connects on the screw mandrel at screw rod cartridge and guide shoe are installed.
The utility model is simple in structure; Easy to install, there is safety lock to emit on the utility model, the oil pipe of salvaging proposes after the well head; Safety lock emits the box cupling of the tubing string of being salvaged with quilt to be twisted together; Partly be locked in the keeping a grip on of being salvaged dragging for lance and blanking plug, the down-hole pressure in the pipe just can't guarantee construction safety with dragging for the ejection of lance blanking plug.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Center-pole 3 upper ends of the utility model are equipped with thread-changing joint 1 and safe lock nut 2 through screw thread; Thread-changing joint 1 other end is a tubing thread 7; The outside cover of the tensioner part 8 on center-pole 3 revolves cartridge type slips 4 is installed; Center-pole 3 lower ends are that screw rod connects screw mandrel 9, connect at screw rod cartridge 5 and guide shoe 6 are installed on the screw mandrel 9.
Below the utility model is done detailed description:
1, thread-changing joint: an end is 2 inch, half tubing threads, is connected with tool pipe, and the other end is the flat button of M50, and drags for the lance center-pole and is connected.
2, safety lock emits: turn round before go into the well in center-pole and unnecessary screw thread part after thread-changing joint is connected.
3, center-pole: be processed with screw thread part in succession, transition portion, shoulder check part, spiral expand card portion, screw rod coupling part.Method of attachment: a, emit safety lock by direction among the figure earlier, the one side of band screw thread is torqued into changeover portion towards shoulder, and then connects together thread-changing joint and center-pole and tighten.B, cartridge type slip sleeve precession spiral swelling part.Following the screw rod of cartridge type slips part connects that screw mandrel part, the spacing lock of connection are emitted, cartridge clamping pad, locking nut, spacing locking nut, spacing lock emit, cartridge, guide shoe.
The two 1.5 inch tool tube male buckle part, handcuffs into safe spear clogged with variable wire connector female buckle and tighten down into the construction of wells later, to the top position in the tool string I under the pressure of the sealant tube and tube type dental plate is pushed to salvage the remainder of downhole tubing inside the top or closed at the wellhead tubing inside the blowout preventer, put on a tool with a workover rig pipe, drum tooth plates are part of the center pole spiral swelling, and wells were salvaged column lock together.
Propose after the well head because borehole pressure is very big, Operating Pressure can not be dismantled and drag for lance and will tear tool pipe earlier open.In order to dismantle safety, emit safety lock earlier, partly unclamp from the thread of center-pole, to turn round by in the down-hole string box cupling of salvaging, the shoulder of center-pole part is locked in the keeping a grip on of being salvaged by the safe locking nut, again demounting tool pipe safety just.
Claims (1)
1. a safety is dragged for the lance blanking plug; It is characterized in that: the center-pole upper end is equipped with thread-changing joint and safe lock nut through screw thread; The thread-changing joint other end is a tubing thread; The outside cover of the tensioner part on center-pole revolves the cartridge type slips is installed, and the center-pole lower end is that screw rod connects screw mandrel, connects on the screw mandrel at screw rod cartridge and guide shoe are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120230140XU CN202125270U (en) | 2011-07-01 | 2011-07-01 | Safe spear blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120230140XU CN202125270U (en) | 2011-07-01 | 2011-07-01 | Safe spear blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125270U true CN202125270U (en) | 2012-01-25 |
Family
ID=45488341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120230140XU Expired - Lifetime CN202125270U (en) | 2011-07-01 | 2011-07-01 | Safe spear blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912232A (en) * | 2014-04-02 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Returnable tubing sealing salvage gear |
| CN112746824A (en) * | 2021-01-26 | 2021-05-04 | 中石化石油工程技术服务有限公司 | Movable slip type fishing head for pulling out plunger pump valve seat |
-
2011
- 2011-07-01 CN CN201120230140XU patent/CN202125270U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912232A (en) * | 2014-04-02 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Returnable tubing sealing salvage gear |
| CN112746824A (en) * | 2021-01-26 | 2021-05-04 | 中石化石油工程技术服务有限公司 | Movable slip type fishing head for pulling out plunger pump valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |