CN2283125Y - Multi-purpose self-sealing well sealer - Google Patents
Multi-purpose self-sealing well sealer Download PDFInfo
- Publication number
- CN2283125Y CN2283125Y CN 96248712 CN96248712U CN2283125Y CN 2283125 Y CN2283125 Y CN 2283125Y CN 96248712 CN96248712 CN 96248712 CN 96248712 U CN96248712 U CN 96248712U CN 2283125 Y CN2283125 Y CN 2283125Y
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- CN
- China
- Prior art keywords
- packing element
- sealing
- self
- blowout preventer
- well
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- Expired - Fee Related
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Abstract
The utility model discloses a multi-purpose self-sealing well sealer which can be used for the well drilling construction and well repair construction in petroleum industry. The utility model is composed of a steel body and a rubber cylinder, wherein the rubber cylinder in the steel body is a multi-valve rubber cylinder body; the outside is sheathed with an integral rubber cylinder sleeve. The multi-purpose self-sealing well sealer achieves the self deforming seal of large-scale diameter change and pipe strings with various shapes, enhances the through capacity of diameter changing tools, solves the sealing problem of different drilling tools in lifting and rotating, and achieves the sealing circulation of liquid entering wells without falling to the ground. The utility model saves the cost of drilling and repairing wells, and provides conditions for controlling well blowout and reducing oil layers and ground pollution.
Description
The utility model relates to the oil exploitation implement, the working multipurpose self-sealing blowout preventer of particularly a kind of drilling well and well workover.
At the drilling well and the workover treatment scene of petroleum industry, the blowout preventer of employing is sealing of monolithic packing element or the sealing of slips flashboard type at present.Sealing caliber scope is little, and shape is single.Monolithic packing element blowout preventer only is adapted to the axial dynamic and static sealing of oil pipe body and box cupling.To the drilling tool of major diameter, multiform shape, then be difficult to realize as the sealing of kelly bar.And slips flashboard type blowout preventer can only be used for the static seal of oil pipe or drilling rod body.For a long time, various blowout preventers are difficult to realize big reducing instrument such as drilling rod, the sealing of multiform shape throw such as kelly bar.It can't be shunt in a well in the job execution process, and working fluid lands and causes stratum and ground pollution, not only strengthens the input of cost but also can not control blowout effectively.The application life of packing element is shorter in addition.
The utility model will solve the problem that can't shunt in a well when using major diameter, big reducing, multiform shape instrument, allow blowout preventer commonly used at present adapt to the requirement of multiple caliber, multiple sealing shape, makes the use of blowout preventer more convenient arbitrarily, shortens the construction period.Other makes working fluid no longer pollute ground, and reduces the pollution to the stratum.Prolong the application life of packing element, control blowout effectively, reduce the cost of brill, well workover.
Technical solution of the present utility model is to change the monolithic packing element in the blowout preventer steel body into separate many lobes packing element body, and metal knitted skeleton has reinforcing rib, and the whole packing element cover of external application suit gets up.The outer steel body that is used for the self-sealing blowout preventer of rotary operation is made up of upper and lower flange and inside and outside seating nipple.Positioning disk is fixed on the step of lower flange and interior seating nipple between lower flange and outer working tube, and bearing is housed up and down.
Use the later blowout preventer of technique scheme, have multi-functional, multiduty characteristics.Realized the automatic deformable seal one of reducing and multiform shape pipe string on a large scale be need not to change blowout preventer, improved the handling capacity of reducing instrument simultaneously, solved that different drilling tools remove and the sealing problem when rotating.Realized that working fluid does not land sealing and circulating, save bore, workover cost, be the control blowout, reduce oil reservoir and ground pollution and created condition.Because the blowout preventer packing element is metal knitted skeleton and distinguish iterative structure, in seal process can elastic deformation take place according to the shape independent assortment of sealing tool, from and prolonged application life of packing element.
Structure chart when accompanying drawing 1 is used to rotate self-styled operation for the utility model.
Structure chart when accompanying drawing 2 is used for the self-styled operation of axially-movable for the utility model.
Below in conjunction with accompanying drawing the utility model is done further detailed description.Referring to attached Fig. 1 and 2, packing element 3 is many lobes packing element body, and the packing element cover of external application integral body is sleeved on it together.Each packing element body is separate rotary-type superimposed body, and metal knitted skeleton has reinforcing rib, and the middle and upper part of each superimposed body is fixed together or uses above it the packing element combination order with their fixed combination together.After packing element 3 centers penetrate the drilling tool or instrument that diameter is not less than the minimal design sealed diameter, superimposed packing element body is compiled under the elastic force effect of skeleton at rubber and steel, makes between packing element 3 and the drilling tool, mutual extrusion realization low pressure seal between the cylinder superposed surfaces between packing element cover and the packing element body, in the packing element.When major diameter or big reducing drilling tool during by this packing element 3, each lobe packing element body along the cylinder superposed surfaces, can slip into or skid off in its elastic range automatically in the packing element 3, realizes freely changing of latus rectum.When the difformity instrument when the packing element 3, can independent assortment between each lobe of packing element body, and elastic deformation takes place, thus form difform inner sealing surface, realize sealing to multiform shape instrument.Self-styled when being rotated, i.e. use the steel body structure shown in the accompanying drawing 1 when drilling well or heavy repair task.Carry out the self-styled operation of axially-movable, be i.e. during light maintenance operation, use steel body structure shown in the accompanying drawing 2.Among Fig. 1, the steel body is made up of upper flange 1, lower flange 2, interior seating nipple 6 and outer working tube 8.Positioning disk 4 is fixed between the step of lower flange 2 and interior seating nipple 6 between lower flange 2 and outer working tube 8, and bearing is housed up and down.Sealing ring pressure ring 5 is pressed on the sealing ring 7 in the step place of interior seating nipple 6.2 crush seals are connected with lower flange to take upper flange 1 between packing element 3 and the steel body.During use, this blowout preventer is installed on the well head big four jackscrew flange by the direct sealing of steel ring flange.Behind the master bushing of packing between upper flange 1 and the kelly bar, can bore normally, workover treatment, realize the rotatory sealing of oil jacket annular space.Fig. 2 structure is self-styled for carrying out axially-movable, i.e. use during minor repair well operation.The steel body is the steel body structure of common blowout preventer, and 1,2 is upper and lower flange among the figure, and 3 is packing element.Using method is identical with common blowout preventer.
Claims (4)
1, a kind of multipurpose self-sealing blowout preventer that is used for oil drilling and workover treatment is made up of steel body and packing element (3), it is characterized in that: the packing element (3) in the steel body is many lobes packing element body, and the whole packing element cover of external application suit forms.
2, multipurpose self-sealing blowout preventer according to claim 1, the packing element body that it is characterized in that forming packing element (3) is independently rotary-type superimposed body separately, metal knitted skeleton has reinforcing rib, the middle and upper part of superimposed body is fixed together or uses the packing element combination order, be fixed and combine.
3, multipurpose self-sealing blowout preventer according to claim 1, the outer steel body that it is characterized in that being used to rotating the blowout preventer of self-styled operation is made up of upper flange (1), lower flange (2), interior seating nipple (6) and outer working tube (8), positioning disk (4) is positioned between lower flange (2) and the outer working tube (8), be fixed on the step of lower flange (2) and interior seating nipple (6), bearing is housed up and down.
4,, it is characterized in that sealing ring pressure ring (5) in interior seating nipple (6) step place, is pressed on the sealing ring (7) according to claim 1 or 3 described multipurpose self-sealing blowout preventers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248712 CN2283125Y (en) | 1996-12-11 | 1996-12-11 | Multi-purpose self-sealing well sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248712 CN2283125Y (en) | 1996-12-11 | 1996-12-11 | Multi-purpose self-sealing well sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283125Y true CN2283125Y (en) | 1998-06-03 |
Family
ID=33920506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96248712 Expired - Fee Related CN2283125Y (en) | 1996-12-11 | 1996-12-11 | Multi-purpose self-sealing well sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283125Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899957A (en) * | 2010-05-14 | 2010-12-01 | 濮阳市益新石油技术有限公司 | Movable self-sealing preventor |
-
1996
- 1996-12-11 CN CN 96248712 patent/CN2283125Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899957A (en) * | 2010-05-14 | 2010-12-01 | 濮阳市益新石油技术有限公司 | Movable self-sealing preventor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |