CN101392635A - Novel self-sealing blowout preventer - Google Patents
Novel self-sealing blowout preventer Download PDFInfo
- Publication number
- CN101392635A CN101392635A CNA2008101169806A CN200810116980A CN101392635A CN 101392635 A CN101392635 A CN 101392635A CN A2008101169806 A CNA2008101169806 A CN A2008101169806A CN 200810116980 A CN200810116980 A CN 200810116980A CN 101392635 A CN101392635 A CN 101392635A
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- flange
- suspension type
- glue core
- blowout preventer
- jackscrew
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Abstract
The invention discloses a novel self-sealing blowout preventer, which comprises a shell, an annular flange and a suspension type rubber core, wherein the flange is arranged on one end of the shell, and is radially provided with a jackscrew distributed along the circumference; the suspension type rubber core is sleeved in the flange and the shell; and a chamfer plane is arranged on the end of the suspension type rubber core far from the shell. When the jackscrew is screwed in the flange, the tip of the jackscrew is supported against the chamfer angle plane. The novel self-sealing blowout preventer replaces a gland bush on the rotary gland bush type self-sealing blowout preventer structure by fixing and pressing the suspension type rubber core by the jackscrew, and solves the problem that when the gland bush is screwed manually, the strength of over tight or over loose can not be mastered and controlled accurately. The novel self-sealing blowout preventer has the advantages of reasonable stress of the rubber core, more reliable sealing performance and great improvement on service life.
Description
Technical field
The present invention relates to the wellhead assembly of the annular space of a kind of sealing oil pipe of the oil well sand washing operation that is used for offshore oilfield and sleeve pipe.
Background technology
At sea in the sand washing operation of oilfield, oil pipe (cleaning hose) need adopt blowout preventer to seal with the annular space of sleeve pipe.What adopt at present is rotation gland-type self-sealing blowout preventer, and as shown in Figure 1, 2, this rotation gland-type self-sealing blowout preventer comprises: housing 1, in housing 1, be provided with the glue core 3 that is used for forming hermetically-sealed construction with tubing string 5, and glue core 3 is arranged in the housing 1.Housing 1 upper end also is provided with the gland 2 that can screw, and compresses glue core 3 by rotation gland 2 and realizes sealing to tubing string 5.But, owing to be hermetically-sealed construction between glue core 3 and the housing 1, therefore when using this rotation gland-type self-sealing blowout preventer at the scene, understand that there are the following problems with certain angle of inclination:
1, not tight (loose excessively) of pressing as if gland 2, glue core 3 sealings are poor; If the tension that gland 2 is pressed, micro-deformations (glue core 3 internal diameter undergauges) take place in glue core 3, and the frictional force that causes removing oil pipe 5 (sand clean out pipe) is big, and glue core 3 lost efficacy fast, reduced application life, strengthened the sand washing operating cost;
When 2, manually rotating gland 2, too tight or too loose dynamics can't correctly be grasped and control.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of novel self-sealing blowout preventer, good airproof performance not only, and can not increase and tubing string between friction.
In order to address the above problem, to the invention provides a kind of novel self-sealing blowout preventer and comprise: housing, annular flange and suspension type glue core; Flange is installed in an end of housing, and this flange radially is provided with the jackscrew that distributes along circumferentially; Suspension type glue core retainer plate is contained in described flange and the housing, and this suspension type glue core is provided with fillet surface away from an end of described housing, and when described jackscrew screwed in described flange, the termination of described jackscrew leaned on this fillet surface.
Preferably, described suspension type glue core forms the O RunddichtringO that is sealed and matched near also being provided with on the outer circumference surface of described fillet surface with described flange.
Preferably, described flange is an inverted cone surface near the inner peripheral surface of described housing, is formed with the back taper outer circumference surface that is sealed and matched with this back taper inner peripheral surface on the described suspension type glue core.
Preferably, also be provided with ring-type on the inner peripheral surface of described flange and hang step, also be provided with the boss that matches with this suspension step on the described suspension type glue core.
The present invention has following advantage:
1, confines by jackscrew and compress suspension type glue core, substitute the structural gland effect of rotation gland-type self-sealing blowout preventer, the difficult problem that too tight or too loose dynamics can't correctly be grasped and control when having overcome artificial rotation gland; The glue core is stressed, and rationally sealing performance is more reliable, and increase substantially application life;
2, under the fastening effect of jackscrew, be adjacent to the effect that the flange inner wall sealing surface reaches primary seal at the O RunddichtringO above the suspension type glue core;
3, O RunddichtringO (primary seal) and back taper hermetically-sealed construction (secondary sealing area) cooperate, and can play the effect of double seal, have improved the sealing performance of suspension type glue core greatly;
4, the suspension step in the flange plays suspension type glue core and is forced to limit base and goes into effect on this step, and when compressing suspension type glue core by the rotary flange jackscrew, the glue core is stressed more to become rationally, and sealing performance is more reliable, and increase substantially application life; In addition, can also control glue core micro-deformation (glue in-core footpath undergauge), reduce the hold power (frictional force) of glue core, thereby prolonged the life-span of glue core, overcome the difficult problem that the glue core compresses or loose excessively dynamics can't correctly be grasped and control fully oil pipe.
Description of drawings
Fig. 1 partly cuts open structural representation for existing rotation gland-type self-sealing blowout preventer;
Fig. 2 partly cuts open structural representation for existing rotation gland-type self-sealing blowout preventer inserts behind the tubing string;
Fig. 3 partly cuts open structural representation for the present invention;
Fig. 4 is the cross-sectional view of suspension type glue core.
The specific embodiment
Shown in Fig. 3,4, the present invention includes: housing 6, annular flange 7 and suspension type glue core 9; Flange 7 is installed in an end of housing 6, and this flange 7 radially is provided with the jackscrew 8 that distributes along circumferentially; Suspension type glue core 9 is sleeved in flange 7 and the housing 6, this suspension type glue core 9 is provided with fillet surface 19 away from an end of housing 6, when jackscrew 8 screwed in flange 7, the termination of jackscrew 8 leaned on fillet surface 19, thereby suspension type glue core 9 is produced the power of (towards the direction of housing 6) downwards.
Suspension type glue core 9 forms the O RunddichtringO 14 that is sealed and matched near also being provided with on the outer circumference surface of fillet surface 19 with flange 7.Flange 7 is an inverted cone surface near the inner peripheral surface 11 of housing 6, is formed with the back taper outer circumference surface 10 that is sealed and matched with this back taper inner peripheral surface 11 on the suspension type glue core 9.Also be provided with ring-type on the inner peripheral surface of flange 7 and hang step 13, also be provided with the boss 12 that matches with this suspension step 13 on the suspension type glue core 9.
In addition, adopt O RunddichtringO 14 and back taper hermetically-sealed construction to match, can play the effect of double seal, improved the sealing performance of suspension type glue core 9 greatly.
In addition, confine by jackscrew 8 and to compress suspension type glue core 9, substitute the structural gland effect of rotation gland-type self-sealing blowout preventer, the difficult problem that too tight or too loose dynamics can't correctly be grasped and control when having overcome artificial rotation gland; Glue core 9 is stressed reasonable, and sealing performance is more reliable, and increase substantially application life.
When the present invention installs and uses, can realize that by last connecting screw rod 16, flange 7 oviduct connects, the mounting flange 17 that is provided with in housing 6 bottoms, following connecting screw rod 18 are installed on omnipotent (ball-type) preventer, the plug 15 that will be arranged on then on the housing 6 is laid down, the pipeline of sand cleaning fluid is injected in changing-over, can realize the sand washing operation.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1, a kind of novel self-sealing blowout preventer is characterized in that, comprising: housing, annular flange and suspension type glue core; Flange is installed in an end of housing, and this flange radially is provided with the jackscrew that distributes along circumferentially; Suspension type glue core retainer plate is contained in described flange and the housing, and this suspension type glue core is provided with fillet surface away from an end of described housing, and when described jackscrew screwed in described flange, the termination of described jackscrew leaned on this fillet surface.
2, novel self-sealing blowout preventer as claimed in claim 1 is characterized in that, described suspension type glue core forms the O RunddichtringO that is sealed and matched near also being provided with on the outer circumference surface of described fillet surface with described flange.
3, novel self-sealing blowout preventer as claimed in claim 1 or 2 is characterized in that, described flange is an inverted cone surface near the inner peripheral surface of described housing, is formed with the back taper outer circumference surface that is sealed and matched with this back taper inner peripheral surface on the described suspension type glue core.
4, novel self-sealing blowout preventer as claimed in claim 3 is characterized in that, also is provided with ring-type on the inner peripheral surface of described flange and hangs step, also is provided with the boss that matches with this suspension step on the described suspension type glue core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101169806A CN101392635A (en) | 2008-07-22 | 2008-07-22 | Novel self-sealing blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101169806A CN101392635A (en) | 2008-07-22 | 2008-07-22 | Novel self-sealing blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101392635A true CN101392635A (en) | 2009-03-25 |
Family
ID=40493125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101169806A Pending CN101392635A (en) | 2008-07-22 | 2008-07-22 | Novel self-sealing blowout preventer |
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| CN (1) | CN101392635A (en) |
Cited By (5)
| 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 |
| CN102061901A (en) * | 2010-12-14 | 2011-05-18 | 雷宽成 | Compensation type multi-purpose annular blowout preventer |
| CN104329042B (en) * | 2014-10-13 | 2016-08-31 | 重庆中重石油机械有限公司 | A kind of self-sealing head glue core assembly |
| CN108868695A (en) * | 2018-08-20 | 2018-11-23 | 河北麟润石油钻采技术有限公司 | Oil well operation bar manages online closed washer |
| CN115369900A (en) * | 2022-08-12 | 2022-11-22 | 山西四建集团有限公司 | Comprehensive room core backfill dewatering well sealing method |
-
2008
- 2008-07-22 CN CNA2008101169806A patent/CN101392635A/en active Pending
Cited By (7)
| 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 |
| CN102061901A (en) * | 2010-12-14 | 2011-05-18 | 雷宽成 | Compensation type multi-purpose annular blowout preventer |
| CN102061901B (en) * | 2010-12-14 | 2016-01-06 | 雷宽成 | Compensation type multi-purpose annular blowout preventer |
| CN104329042B (en) * | 2014-10-13 | 2016-08-31 | 重庆中重石油机械有限公司 | A kind of self-sealing head glue core assembly |
| CN108868695A (en) * | 2018-08-20 | 2018-11-23 | 河北麟润石油钻采技术有限公司 | Oil well operation bar manages online closed washer |
| CN115369900A (en) * | 2022-08-12 | 2022-11-22 | 山西四建集团有限公司 | Comprehensive room core backfill dewatering well sealing method |
| CN115369900B (en) * | 2022-08-12 | 2024-06-11 | 山西四建集团有限公司 | Comprehensive atrial backfill dewatering well sealing method |
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Application publication date: 20090325 |