CN201883992U - Downhole tubing plug - Google Patents
Downhole tubing plug Download PDFInfo
- Publication number
- CN201883992U CN201883992U CN2010206493654U CN201020649365U CN201883992U CN 201883992 U CN201883992 U CN 201883992U CN 2010206493654 U CN2010206493654 U CN 2010206493654U CN 201020649365 U CN201020649365 U CN 201020649365U CN 201883992 U CN201883992 U CN 201883992U
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- CN
- China
- Prior art keywords
- leather cup
- rubber
- mandrel
- slips
- leather
- 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 relates to a downhole tubing plug, which comprises an adapter, an adapter nut, two sets of leather cup mandrels, leather cups, compression rings, hexagonal nuts, rubber sheets, a rubber sheet backing ring, a rubber sheet mandrel, a shaft, slips, a stopper and a slotted screw, the slip is mounted on the dovetail of the shaft through a dovetail groove, the stopper is fixed on the shaft by the slotted screw, the rubber sheet mandrel is screwed on the shaft, the rubber sheet backing ring, the rubber sheets and a rubber sheet bushing are sequentially mounted on the other end of the rubber sheet mandrel, the hexagonal nuts are screwed, the leather cup mandrels are screwed on the rubber sheet mandrel, the leather cup compression rings are sequentially mounted on the other ends of the leather cup mandrels, the hexagonal nuts are screwed on the leather cup mandrels, the leather cups and the compression rings are sequentially mounted on the other ends of the leather cup mandrels, the hexagonal nuts are screwed to press out the compression rings, the adapter nut is screwed on the leather cup mandrel, and the adapter is inserted into the hole of the adapter nut. By means of the leather cups and the rubber sheets of the upper section, the product can have sealing and pressure-building effects, the two sets of slips are used for anchoring a tubing, the higher the downhole pressure is, the better the sealing effect can be, and the more tightly the slips can anchor.
Description
Technical field
The present invention relates to the capping tools that a kind of oilfield is used, specially refer to a kind of tubing plug that stops up the next stage oil pipe when being used for the down-hole and playing oil pipe.
Background technology
Rise in the oil pipe process in the oil-water well well workover, sometimes borehole pressure height, well liquid sprays in oil pipe, and environment is polluted, bring very big difficulty to well workover, make the oil-water well can not operation, need carry out could continuing operation after the kill-job construction, increase kill-job construct the kill-job equipment and the goods and materials of needs oil-water well, engineering time is long, consume greatly the waste great amount of manpower, material resources, and well killing fluid can damage the stratum, oil well output is reduced, can not realize the quick reparation of oil-water well, a kind of tubing plug in the existing technology is in daily use, can be because most tube inner wall fouling be serious, not in place under the blocking device, plug depth is more shallow, has made that the flowline time is longer, frequent in addition use is bigger to the infringement of blanking plug, operating efficiency is low, and difficult the repeated use directly influenced economic benefit and job performance.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art.A kind of down-hole oil tube blanking plug is provided.
The present invention realizes by following concrete technical scheme.
A kind of down-hole oil tube blanking plug, comprise joint, collar nut, leather cup mandrel I, hex nut, pressure ring, leather cup, leather cup mandrel II, the rubber lining, rubber, the rubber gasket ring, the rubber mandrel, the lance bar, slips, link stopper, slotted screw, it is characterized in that: design has dovetail groove on slips, design has dovetail on the outside cylinder inclined-plane of lance bar, be installed to slips on the dovetail of lance bar by dovetail groove, link stopper is fixed on the lance bar with slotted screw, the rubber mandrel is connected with the lance bar by screw thread and tightens, the other end of rubber mandrel puts the rubber gasket ring successively, rubber, the rubber lining, the hex nut of screwing on compresses the rubber lining, leather cup mandrel II is connected with the rubber mandrel thread and tightens, the other end of leather cup mandrel II puts leather cup successively, pressure ring, the hex nut of screwing on compresses pressure ring, be threaded with leather cup mandrel I again and tighten, the other end at the leather cup mandrel puts leather cup successively, pressure ring, the hex nut of screwing on compresses pressure ring, collar nut is threaded onto on the leather cup mandrel I at last, joint is inserted in the endoporus of collar nut again.
Hex nut of the present invention has 4, pressure ring that 2,2 of leather cups, 2 of slips, 2 of blocks, 2 of slotted screws are arranged.
Main feature of the present invention is that operating principle is, at the epimere of instrument two groups of leather cups and one group of rubber is housed, and plays sealing oil pipe and the effect of building the pressure respectively, at the lower semisection of instrument two groups of slips has been installed, and then is used for the grappling oil pipe.During use, this product is pushed the operating position of a down-hole oil tube, pass through hydraulic pressure, it is sent into the oil pipe bottom seals, when suppressing, the rubber place state that builds the pressure, receive in the leather cup, make it, utilize the interference of leather cup and oil pipe and down-hole pressure to seal oil pipe after the pressure release smoothly down to the position that oil pipe need seal, KAWAl is by conducting oneself with dignity to lower slider when this product enters the oil pipe lower end, slips and inclined-plane produce relative displacement, and the warp-wise component by down-hole pressure moves upward and produced for thrust that the lance bar makes progress and inclined-plane forces slips to be submitted into tube inner wall, and down-hole pressure sealing effectiveness more is good more, and slips anchoring is tight more.
Usefulness of the present invention exists, and it is simple in structure, easy and simple to handle as the calker of down-hole oil tube, and leather cup by this product epimere and rubber can play sealing and the effect of building the pressure respectively, and the design of two groups of slips is used for the grappling oil pipe, safe in utilization, good reliability.
Description of drawings
Fig. 1 is a section of structure of the present invention
In Fig. 1; 1-joint, 2-collar nut, 3-leather cup mandrel I, 4-hex nut, 5-pressure ring, 6-leather cup, 7-leather cup mandrel II, 8-rubber lining, 9-rubber, 10 rubber gasket rings, 11-rubber mandrel, 12-lance bar, 13-slips, 14-link stopper, 15-slotted screw,
The specific embodiment
The invention will be further described below in conjunction with Figure of description
A kind of down-hole oil tube blanking plug, comprise joint 1, collar nut 2, leather cup mandrel I3, hex nut 4, pressure ring 5, leather cup 6, leather cup mandrel II7, rubber lining 8, rubber 9, rubber gasket ring 10, rubber mandrel 11, lance bar 12, slips 13, link stopper 14, slotted screw 15, it is characterized in that: design has dovetail groove on slips 13, design has dovetail on the outside cylinder inclined-plane of lance bar 13, be installed to slips 13 on the dovetail of lance bar 12 by dovetail groove, link stopper 14 usefulness slotted screws 15 are fixed on the lance bar 12, rubber mandrel 11 is connected with lance bar 12 by screw thread and tightens, the other end of rubber mandrel 11 puts rubber gasket ring 10 successively, rubber 9, rubber lining 8, the hex nut 4 of screwing on compresses rubber lining 8, leather cup mandrel II7 is threaded with rubber mandrel 11 and tightens, the other end of leather cup mandrel II7 puts leather cup 6 successively, pressure ring 5, the hex nut 4 of screwing on compresses pressure ring 5, be threaded with leather cup mandrel I3 again and tighten, the other end at leather cup mandrel I puts leather cup successively, pressure ring, the hex nut 4 of screwing on compresses pressure ring, at last collar nut 2 is threaded onto on the leather cup mandrel I, again joint 1 is inserted in the endoporus of collar nut 2.
Hex nut 4 of the present invention has 4, pressure ring that 2,2 of leather cups, 2 of slips, 2 of blocks, 2 of slotted screws are arranged.
Claims (3)
1. down-hole oil tube blanking plug, comprise joint, collar nut, leather cup mandrel I, hex nut, pressure ring, leather cup, leather cup mandrel II, the rubber lining, rubber, the rubber gasket ring, the rubber mandrel, the lance bar, slips, link stopper, slotted screw, it is characterized in that: design has dovetail groove on slips, design has dovetail on the outside cylinder inclined-plane of lance bar, be installed to slips on the dovetail of lance bar by dovetail groove, link stopper is fixed on the lance bar with slotted screw, the rubber mandrel is connected with the lance bar by screw thread and tightens, the other end of rubber mandrel puts the rubber gasket ring successively, rubber, the rubber lining, the hex nut of screwing on compresses the rubber lining, leather cup mandrel II is connected with the rubber mandrel thread and tightens, the other end of leather cup mandrel II puts leather cup successively, pressure ring, the hex nut of screwing on compresses pressure ring, be threaded with leather cup mandrel I again and tighten, the other end at the leather cup mandrel puts leather cup successively, pressure ring, the hex nut of screwing on compresses pressure ring, collar nut is threaded onto on the leather cup mandrel I at last, joint is inserted in the endoporus of collar nut again.
2. according to the described a kind of down-hole oil tube blanking plug of claim 1, it is characterized in that: hex nut has 4, pressure ring that 2,2 of leather cups, 2 of slips, 2 of blocks, 2 of slotted screws are arranged.
3. according to the described a kind of down-hole oil tube blanking plug of claim 1, it is characterized in that: the epimere at instrument is equipped with two groups of leather cups and one group of rubber, at the lower semisection of instrument two groups of slips has been installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206493654U CN201883992U (en) | 2010-12-09 | 2010-12-09 | Downhole tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206493654U CN201883992U (en) | 2010-12-09 | 2010-12-09 | Downhole tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201883992U true CN201883992U (en) | 2011-06-29 |
Family
ID=44181532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206493654U Expired - Fee Related CN201883992U (en) | 2010-12-09 | 2010-12-09 | Downhole tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201883992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879087A (en) * | 2015-06-04 | 2015-09-02 | 中国石油天然气股份有限公司 | Blanking plug |
-
2010
- 2010-12-09 CN CN2010206493654U patent/CN201883992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879087A (en) * | 2015-06-04 | 2015-09-02 | 中国石油天然气股份有限公司 | Blanking plug |
| CN104879087B (en) * | 2015-06-04 | 2017-09-15 | 中国石油天然气股份有限公司 | Blanking plug |
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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: 20110629 Termination date: 20111209 |