CN2898275Y - Multifunctional well packer - Google Patents
Multifunctional well packer Download PDFInfo
- Publication number
- CN2898275Y CN2898275Y CN 200620025916 CN200620025916U CN2898275Y CN 2898275 Y CN2898275 Y CN 2898275Y CN 200620025916 CN200620025916 CN 200620025916 CN 200620025916 U CN200620025916 U CN 200620025916U CN 2898275 Y CN2898275 Y CN 2898275Y
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- CN
- China
- Prior art keywords
- central tube
- slips
- cone
- capping device
- well
- 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 multifunctional well closing device, belong to a wellhead closing device used for well drilling and exploration, which is characterized in comprising a hollow central tube; a valve plug is arranged in the central tube; a sealing device is sleeved on the outside of the hollow tube and also unit capable of clamping the well wall is sleeved on the outside of the hollow tube. The design of the sealing device and the clamping unit in the utility model ensures the sealing and clamping between the well closing device and the well wall, so the utility model has the advantages of anti-blowout, anti-oil theft and anti-pollution.
Description
Affiliated technical field
The utility model belongs to the well head locking device of drilling well exploitation usefulness.
Background technology
The oil field is in long-term development process, and for various reasons, ubiquity length and stopped well and scrap oil, gas, well.For these wells, major part all adopts oil reservoir circle, top and well head sealing to shunt in a well, yet the construction of permanent shut-in well cementing plug is complicated, and it is more to employ equipment, and investment is high, the coordination difficulty is big.Provisional shut-in well is with the well head sealing, easily by the lawless person destroy, stolen, and some well head leakages can cause environment pollution, have increased workers and peasants' compensation, have caused very big economic loss to the oil field.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of multifunctional capping device, is used for finishing the shut-in well task more expediently, reaches well blowout preventing, guard against theft oil, antipollution purpose, can also reuse.
Technical solution adopted in the utility model is: multifunctional capping device is characterized in that: comprise the central tube of a hollow, valve plug be housed in the central tube, the outer suit sealing device of hollow tube and be enclosed within equally hollow tube outer can with the device of borehole wall chucking.
Compared with prior art, the beneficial effects of the utility model are: because the utility model adopted metal blowout preventer, utilize frock just not only to lower difficulty of construction, and reach antitheft purpose with its time to 2～10 meters position below the well head; Also needn't cause construction to compensate through peripheral soil or farmland as employ main equipment in the past; Make front cover mouth well fund from before 4～60,000 be reduced to 2.5～3.4 ten thousand yuan that adopt behind the utility model.Especially when reactivating the well of sealing, also needn't employ main equipment again and enter the place, only need to work out blowout preventer with corresponding frock and get final product, another has saved fund, has reduced difficulty of construction, and blowout preventer is used repeatedly.The design of sealing device of the present utility model and gripping mechanism has guaranteed the sealing and the chucking of the blowout preventer and the borehole wall, and then reaches well blowout preventing, guard against theft oil, antipollution purpose.
Description of drawings
Fig. 1 is a structural representation of the present utility model, wherein 1 takes the lead 2 screen casings, 3 back-up rings, 4 sealing ring cones, 5 O-ring seals, 6 packing holders, 7 slips cones, 8 slips, 9 springs, 10 central tubes, 11 slip spiders, 12 ball valves, 13 valve seats, 14 pressure pipes, 15 joints.
The specific embodiment
With reference to the accompanying drawings, the utility model is further described:
Referring to accompanying drawing 1, multifunctional capping device is characterized in that: the central tube 10 that comprises a hollow, valve plug is housed in the central tube, is ball valve 12 herein, the outer suit sealing device of hollow tube, be herein O-ring seal 5 and be enclosed within equally hollow tube outer can with the device of borehole wall chucking, be slips 8 herein.
Above-mentioned multifunctional capping device connects filter in the lower end of central tube, be screen casing 2 herein and take the lead 1.
Above-mentioned multifunctional capping device, described gripping mechanism are slips 8, are provided with slips cone 7 between central tube and slips, and the slip spider 11 of screwed connection is arranged outside central tube, and slips is embedded on the slip spider, and the lower end of slips is clamped on slips cone domatic.
Above-mentioned multifunctional capping device, described sealing device is an O-ring seal 5, and between central tube and O-ring seal, be provided with sealing ring cone 4, back-up ring 3 with the central tube screwed connection is arranged with the fixed seal ring cone under cone, packing holder 6 with the central tube screwed connection is arranged in the O-ring seal upper end with the fixing seal cushion rubber.
Above-mentioned multifunctional capping device, described valve plug are the ball valves 12 in the valve seat 13 of placing that has spring 11 control.Pressure pipe 14 is withstood valve seat 13, is used to be connected frock or other external device with the joint 15 of central tube screwed connection.
During shut-in well, slips 8 blocks borehole wall card lifting and fastens effect, and O-ring seal 5 is close to the borehole wall, plays sealing function.
The utility model adopts the central tube of hollow and the screen casing that is attached thereto and leader to add the design of valve plug, is in order to pump after opening.
Claims (5)
1, multifunctional capping device is characterized in that: comprise the central tube of a hollow, valve plug be housed in the central tube, the outer suit sealing device of hollow tube and be enclosed within equally hollow tube outer can with the device of borehole wall chucking.
2, according to the described multifunctional capping device of claim 1, it is characterized in that: the lower end at central tube connects filter.
3, according to the described multifunctional capping device of claim 1, it is characterized in that: described gripping mechanism is a slips, is provided with the slips cone between central tube and slips, and the slip spider of screwed connection is arranged outside central tube, slips is embedded on the slip spider, and the lower end of slips is clamped on slips cone domatic.
4, according to the described multifunctional capping device of claim 1, it is characterized in that: described sealing device is an O-ring seal, and between central tube and O-ring seal, be provided with the sealing ring cone, under cone, have with the back-up ring of central tube screwed connection with fixing cone, have in the O-ring seal upper end with the central tube screwed connection packing holder with the fixing seal cushion rubber.
5, multifunctional capping device according to claim 1 is characterized in that: described valve plug is to have spring controlled ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025916 CN2898275Y (en) | 2006-04-27 | 2006-04-27 | Multifunctional well packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025916 CN2898275Y (en) | 2006-04-27 | 2006-04-27 | Multifunctional well packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898275Y true CN2898275Y (en) | 2007-05-09 |
Family
ID=38073611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025916 Expired - Fee Related CN2898275Y (en) | 2006-04-27 | 2006-04-27 | Multifunctional well packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898275Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563944A (en) * | 2014-01-24 | 2015-04-29 | 大庆金祥寓科技有限公司 | Releasing well plugging device |
-
2006
- 2006-04-27 CN CN 200620025916 patent/CN2898275Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563944A (en) * | 2014-01-24 | 2015-04-29 | 大庆金祥寓科技有限公司 | Releasing well plugging device |
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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: 20070509 Termination date: 20130427 |