CN201386525Y - Spear blanking plug - Google Patents
Spear blanking plug Download PDFInfo
- Publication number
- CN201386525Y CN201386525Y CN200920093349U CN200920093349U CN201386525Y CN 201386525 Y CN201386525 Y CN 201386525Y CN 200920093349 U CN200920093349 U CN 200920093349U CN 200920093349 U CN200920093349 U CN 200920093349U CN 201386525 Y CN201386525 Y CN 201386525Y
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- blanking plug
- pipe nipple
- sealing cup
- lance
- 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 spear blanking plug for an oil well, comprising a connecting pup joint (1), a sealing rubber cup (2), a supporting inner bushing (3) and an O-shaped seal rubber ring (4), wherein the upper end of the connecting pup joint (1) is a connecting pipe (11), the connecting pipe (11) is provided with an internal thread (12), the lower end of the connecting pup joint (1) is a connecting rod (13), the lower end of the connecting rod (13) is provided with an external thread (14), the sealing rubber cup (2) is tightly sheathed on the connecting rod (13), the supporting inner bushing (3) is inserted into the lower part of the sealing rubber cup (2) and sheathed on the connecting rod (13), the O-shaped seal rubber ring (4) is arranged between the sealing rubber cup (2) and the connecting rod (13), and the center of the connecting pup joint (1) is provided with a through hole (5); and when being inserted into an oil pipe along with the spear blanking plug, under the protection of the supporting inner bushing, the sealing rubber cup can not turn over; the arrangement of the O-shaped seal rubber ring (4) plays the role of secondary sealing; and the arrangement of the through hole in the connecting pup joint can realize dual effects of conventional salvage with pressure and fish-top flushing.
Description
Technical field
The utility model relates to a kind of oil, well special tool, particularly a kind of lance blanking plug that drags for.
Background technology
Existing its structure of lance blanking plug of dragging for is to constitute by connecting pipe nipple and sealing cup, the upper end that connects pipe nipple is a tube connector, this tube connector has internal thread, the lower end that connects pipe nipple is a connecting rod, the lower end of connecting rod has external screw thread, and sealing cup closely is enclosed within on the connecting rod, during use, the tube connector that connects the pipe nipple upper end is screwed onto with the lance bar that drags for lance, and the connecting rod that connects the pipe nipple lower end is screwed onto with the guide shoe that drags for lance.During use, drag for the lance drive and drag for lance blanking plug insertion oil pipe endoporus, expand outwardly under the effect of sealing cup fluid pressure in well, seal the oil pipe endoporus, thereby hydraulic oil, gas, water in the oil pipe can't excessively be sprayed, play the effect of stopping up the oil pipe endoporus, drag for lance simultaneously and catch tube inner wall, last bailing jail.The shortcoming of dragging for the existence of lance blanking plug of this kind structure is: the one, and sealing cup is the easy phenomenon of turning up when inserting oil pipe inside, the promptly said back of the body that turns over; The 2nd, the sealing between sealing cup and the connecting rod is bad; The 3rd, the center that connects pipe nipple does not have through hole, for the hydraulic oil well, need put the well that pressure is treated overhaul, does not have band and presses the conventional function of salvaging and washing top of fish.
The utility model content
The purpose of this utility model is above-mentionedly existing to drag for three shortcomings that the lance blanking plug exists in order to solve, and provide that a kind of sealing cup can not turn up, good airproof performance and have band press conventional salvage and flushing top of fish function drag for the lance blanking plug.
The utility model is that cover, O type O-ring seal constitute in pipe nipple, sealing cup, the support by connecting, wherein, the upper end that connects pipe nipple is a tube connector, and this tube connector has internal thread, and the lower end that connects pipe nipple is a connecting rod, the lower end of connecting rod has external screw thread, sealing cup closely is enclosed within on the connecting rod, and cover is plugged in the bottom of sealing cup in supporting, and is enclosed within on the connecting rod, be provided with O type O-ring seal between sealing cup and the connecting rod, the center that connects pipe nipple offers through hole.
The course of work of the present utility model and principle are: drag for lance and drive the utility model insertion oil pipe endoporus, expand outwardly under the effect of sealing cup fluid pressure in well, seal the oil pipe endoporus, thereby hydraulic oil, gas, water in the oil pipe can't excessively be sprayed, play the effect of stopping up the oil pipe endoporus, drag for lance simultaneously and catch tube inner wall, last bailing jail; Offering of the through hole of connection pipe nipple for the hydraulic oil well, need be put and press the well for the treatment of overhaul, can realize with pressing the conventional double action of salvaging and washing top of fish.
Wherein connect in the middle of the lance bar and guide shoe that pipe nipple is installed in returnable fishing spear, play the effect that the primary seal leather cup is installed; In supporting cover be used for supporting sealing cup inside make sealing reach best effects and prevent to drag for lance insert oil pipe when inner leather cup turn over the back of the body; O type O-ring seal is arranged between the connecting rod that connects pipe nipple and the sealing cup and plays the secondary seal effect; Sealing cup is used to seal the oil pipe endoporus, prevents the excessive ejection of oil, gas, water in the oil pipe; Offering of the through hole of connection pipe nipple for the hydraulic oil well, need be put and press the well for the treatment of overhaul, can realize with pressing the conventional double action of salvaging and washing top of fish.
The beneficial effects of the utility model are:
1, sealing cup is inserting oil pipe when inner with the utility model, under the protection of in supporting, overlapping, and (the turning over the back of the body) phenomenon of can not turning up;
2, connect the connecting rod and the setting of the O type O-ring seal between the sealing cup of pipe nipple, play the secondary seal effect, improved sealing performance;
3, connect offering of pipe nipple center inner via hole,, need put and press the well for the treatment of overhaul, can realize with the double action of pressing conventional salvaging and flushing top of fish for the hydraulic oil well.
Description of drawings
Fig. 1 is the sectional view of the utility model embodiment.
The specific embodiment
See also shown in Figure 1, be embodiment of the present utility model, it is by connecting pipe nipple 1, sealing cup 2, cover 3 in supporting, O type O-ring seal 4 constitutes, wherein, the upper end that connects pipe nipple 1 is a tube connector 11, this tube connector 11 has internal thread 12, the lower end that connects pipe nipple 1 is a connecting rod 13, the lower end of connecting rod 13 has external screw thread 14, sealing cup 2 closely is enclosed within on the connecting rod 13, and cover 3 is plugged in the bottom of sealing cup 2 in supporting, and is enclosed within on the connecting rod 13, be provided with O type O-ring seal 4 between sealing cup 2 and the connecting rod 13, the center that connects pipe nipple 1 offers through hole 5.
Claims (3)
1, a kind of lance blanking plug that drags for, it includes and connects pipe nipple and sealing cup, the upper end that connects pipe nipple is a tube connector, this tube connector has internal thread, and the lower end that connects pipe nipple is a connecting rod, and the lower end of connecting rod has external screw thread, sealing cup closely is enclosed within on the connecting rod, it is characterized in that: also include and support interior cover, cover is plugged in the bottom of sealing cup in the described support, and is enclosed within on the connecting rod.
2, a kind of lance blanking plug that drags for according to claim 1 is characterized in that: be provided with O type O-ring seal between described sealing cup and the connecting rod.
3, a kind of lance blanking plug that drags for according to claim 1 and 2, it is characterized in that: the center of described connection pipe nipple offers through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093349U CN201386525Y (en) | 2009-04-07 | 2009-04-07 | Spear blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093349U CN201386525Y (en) | 2009-04-07 | 2009-04-07 | Spear blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386525Y true CN201386525Y (en) | 2010-01-20 |
Family
ID=41579058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920093349U Expired - Fee Related CN201386525Y (en) | 2009-04-07 | 2009-04-07 | Spear blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386525Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653697A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Oil pipe hydraulic cuts fishing tool |
-
2009
- 2009-04-07 CN CN200920093349U patent/CN201386525Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653697A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Oil pipe hydraulic cuts fishing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20100407 |