CN202055795U - Double layer tubular rubber core annular blowout preventer - Google Patents
Double layer tubular rubber core annular blowout preventer Download PDFInfo
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- CN202055795U CN202055795U CN201120116716XU CN201120116716U CN202055795U CN 202055795 U CN202055795 U CN 202055795U CN 201120116716X U CN201120116716X U CN 201120116716XU CN 201120116716 U CN201120116716 U CN 201120116716U CN 202055795 U CN202055795 U CN 202055795U
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Abstract
A double layer tubular rubber core annular blowout preventer comprises an upper flange connected and fixed on the upper portion of a housing by bolts and a lower flange connected and fixed on the lower portion of the housing by bolts; and is characterized in that: an outer rubber cylinder is disposed inside the housing between the upper flange and the lower flange; a support is embedded into the outer rubber cylinder; an inner rubber cylinder is disposed in the cavity of the outer rubber cylinder, and is connected with an above suspended flange by terminal strands; the suspended flange is in spline type connection with the upper flange; a baffle pin is disposed on the upper flange; a pressure release hole is disposed on the same side with the suspended flange; a sealing groove formed on the upper end of the suspended flange is matched with a sealing ring disposed on the lower end of a self-sealing head; a gland is disposed on the top of the self-sealing head, and is connected and fixed with the suspended flange by bolts. The utility model achieves the beneficial effects that: the blowout preventer has a simple structure, is used conveniently, and reduces product cost; and because of the double layer tubular annular structure design, oil leakage phenomenon can be avoided even the inner rubber cylinder is broken or replaced.
Description
Technical field
The utility model relates to a kind of preventer, and particularly a kind of double tubular glue core annular preventer belongs to the technical field of oilfield downhole operation aspect.
Background technology
At present, known preventer is an individual layer tubular glue core annular preventer, and its drawback is, latus rectum little (φ 124mm), downhole oil pipe hanger (φ 179.4-φ 183.6mm) can't pass, and need remove this preventer when playing tubing hanger, refill back Deng after the proposition tubing hanger, very trouble is time-consuming.The individual layer packing element causes a large amount of hydraulic oil wastes in case leakage of oil will appear in damage.The diameter that proposes oil pipe is φ 73-φ 89mm, also can pass through if guarantee tubing hanger (φ 179.4-φ 183.6mm), its latus rectum will reach φ 186mm, like this, when normal operation, seal the oil pipe of φ 73 with the packing element of φ 186mm latus rectum, the distortion of its packing element is too big, and it bears stress level and will reduce greatly, can not satisfy the on-the-spot requirement of using (can only pressure-bearing 1Mpa).A bite well has only the top that a tubing hanger is arranged, and normal oil pipe has last km to several kms, thereby the packing element internal diameter is little, can reach pressure-bearing height (14Mpa) and not damage packing element again.How can realize that the packing element internal diameter is little, the pressure-bearing height, can accomplish again leakage of oil can not occur after the packing element breakage, again can be more convenient when proposing tubing hanger, need not remove preventer, need not tear screw open, can propose interior packing element with tubing hanger, lay down tubing hanger after, interior packing element can be put into tube again, rotation can be blocked, and carries out operation.For achieving the above object, this cover of research and design FH 13/18.6-14/21 double tubular glue core annular preventer.
Summary of the invention
At the deficiency that above-mentioned technical problem exists, the purpose of this utility model provides a kind of double tubular glue core annular preventer.
The technical solution of the utility model is as follows:
A kind of double tubular glue core annular preventer, be included in upper flange that housing top is connected and fixed with bolt and be connected and fixed lower flange with a plurality of bolts in lower housing portion, it is characterized in that upper flange in housing and lower flange middle part be provided with outside packing element, packing element is embedded in support outside, be provided with interior packing element in the cavity of packing element outside, packing element is connected by jackscrew with the suspension flange that its top is provided with in described, hanging flange connects with the upper flange spline, upper flange is provided with backing pin, be provided with relief hole in a side that hangs flange, the seal groove that described suspension flange upper end is provided with matches with the sealing ring that is provided with from the end socket lower end.Be provided with gland at it from end socket top, described gland is connected and fixed by bolt with the suspension flange.
Described outer packing element is semiclosed cylinder shape shape, and described backing pin is used for controlling the anglec of rotation that hangs flange, hangs 36 ° of flange positive rotation, makes to hang the male and female spline that is provided with on flange and the upper flange and push up mutually.
The external manual ball valve of described relief hole.
Packing element internal diameter φ 120-φ 134mm in it proposes its latus rectum of back to interior packing element and can reach φ 186mm.
The beneficial effects of the utility model are that simple in structure, easy to use, the reduction operating cost because of adopting the design of double tubular loop configuration, even if interior packing element breaks or changes interior packing element, oil leakage phenomenon can not take place yet; Can conveniently propose tubing hanger, need not remove preventer, need not tear screw open, can propose interior packing element with tubing hanger, lay down tubing hanger after, interior packing element can be put into tube again, rotation can be blocked, and carries out operation.
Description of drawings
Fig. 1 is a half section structural representation of the present utility model;
Fig. 2 is that Fig. 1 removes from end socket (11) and from the plan structure schematic diagram of end socket gland (12).
Among the figure: packing element, 4 outer packing elements, 5 housings, 6 supports, 7 jackscrews, 8 upper flanges, 9 hang flange, 10 relief holes, 11 from end socket, 12 glands, 13 backing pins in 1 alignment pin, 2 lower flanges, 3.
The specific embodiment
As shown in Figure 1 and Figure 2, the a plurality of bolts of upper flange 8 usefulness are set on housing 5 tops to be connected and fixed, bottom and lower flange 2 usefulness bolts are connected and fixed, in the cavity of housing 5, upper flange 8 is provided with outer packing element 4 with the middle part of lower flange 2, described outer packing element 4 is semiclosed cylinder shape shape, and packing element 4 is embedded in support 6 outside semiclosed.Packing element 3 in being provided with in the cavity of packing element 4 outside, packing element 3 is connected by jackscrew 7 with the suspension flange 9 that its top is provided with in described, hang flange 9 and connect with upper flange 8 splines, upper flange 8 is provided with backing pin 13, and described backing pin 13 is used for controlling the anglec of rotation that hangs flange 9.Hang 36 ° of flange 9 positive rotation, make and hang the male and female spline that is provided with on flange 9 and the upper flange 8 and withstand mutually, and insert alignment pin 1 and prevent rotation.In changing, needs during packing element 3,,, can take off jackscrew 7, the interior packing element 3 that more renews rapidly suspension flange 9 and 3 propositions of interior packing element hanging 36 ° of flange 9 despinings as long as extract alignment pin 1.
Be provided with relief hole 10 in a side that hangs flange 9, described relief hole 10 external manual ball valves with self-styled, are opened the side outlet manual ball valve when helping low pressure during high pressure, can guide in the appointment sewage cylinder releasing a small amount of profit, prevent the ejection of well liquid, pollute ground.
The seal groove that described suspension flange 9 upper ends are provided with matches with the sealing ring that is provided with from end socket 11 lower ends, guarantees that this equipment is in sealing state when work.Be provided with gland 12 on its top from end socket 11, described gland 12 with hang flange 9 and be connected and fixed by bolt.
Outer packing element 4 is semiclosed tube circle, and built-in hold is held frame 6, puts into housing 5, the hydraulic oil of coming in outside housing 5 is by outer packing element 4 isolation, and interior packing element 3 is packed in the outer packing element 4, after hydraulic oil enters housing 5, sealed by outer packing element 4, behind outer packing element 4 pressurizeds, internal diameter diminishes, packing element 3 cylindricals in pushing again, packing element 3 internal diameters diminish in causing, and seal oil pipe, even interior packing element 3 breaks or changes interior packing element 3, outer packing element 4 is sealed oil pocket, also oil leakage phenomenon can not take place.
Packing element 3 internal diameter φ 120-φ 134mm in it propose its latus rectum of back to interior packing element 3 and can reach φ 186mm.The packing element internal diameter is little, and its advantage is that distortion is little when embracing φ 73-φ 89mm oil pipe, can seal elevated pressures.Internally packing element 3 inner wall abrasion are little, can make box cupling by force by interior packing element 3, improve operating efficiency.
Claims (4)
1. double tubular glue core annular preventer, be included in upper flange (8) that housing (5) top is connected and fixed with bolt and be connected and fixed lower flange (2) with a plurality of bolts in housing (5) bottom, it is characterized in that upper flange (8) and lower flange (2) middle part in housing (5) be provided with outside packing element (4), packing element (4) is embedded in support (6) outside, be provided with interior packing element (3) in the cavity of packing element (4) outside, packing element (3) is connected by jackscrew (7) with the suspension flange (9) that its top is provided with in described, hanging flange (9) connects with upper flange (8) spline, upper flange (8) is provided with backing pin (13), be provided with relief hole (10) in a side that hangs flange (9), the seal groove that described suspension flange (9) upper end is provided with matches with the sealing ring that is provided with from end socket (11) lower end, be provided with gland (12) at it from end socket (11) top, described gland (12) is connected and fixed by bolt with suspension flange (9).
2. double tubular glue core annular preventer according to claim 1, it is characterized in that described outer packing element (4) is semiclosed cylinder shape shape, described backing pin (13) is used for controlling the anglec of rotation that hangs flange (9), hang 36 ° of flange (9) positive rotation, make suspension flange (9) and upper flange (8) go up the male and female spline that is provided with and push up mutually.
3. double tubular glue core annular preventer according to claim 1 is characterized in that the external manual ball valve of described relief hole (10).
4. double tubular glue core annular preventer according to claim 1 is characterized in that packing element (3) internal diameter φ 120-φ 134mm in it, interior packing element (3) is proposed its latus rectum of back can reach φ 186mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120116716XU CN202055795U (en) | 2011-04-20 | 2011-04-20 | Double layer tubular rubber core annular blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120116716XU CN202055795U (en) | 2011-04-20 | 2011-04-20 | Double layer tubular rubber core annular blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055795U true CN202055795U (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120116716XU Expired - Fee Related CN202055795U (en) | 2011-04-20 | 2011-04-20 | Double layer tubular rubber core annular blowout preventer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202055795U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573206A (en) * | 2013-11-22 | 2014-02-12 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN104727774A (en) * | 2015-03-13 | 2015-06-24 | 成都大漠石油机械有限公司 | Wellhead blowout preventer for well repair |
| CN107355194A (en) * | 2017-08-30 | 2017-11-17 | 中联煤层气有限责任公司 | A kind of annular preventer |
-
2011
- 2011-04-20 CN CN201120116716XU patent/CN202055795U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573206A (en) * | 2013-11-22 | 2014-02-12 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN103573206B (en) * | 2013-11-22 | 2017-01-18 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN104727774A (en) * | 2015-03-13 | 2015-06-24 | 成都大漠石油机械有限公司 | Wellhead blowout preventer for well repair |
| CN107355194A (en) * | 2017-08-30 | 2017-11-17 | 中联煤层气有限责任公司 | A kind of annular preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20160420 |