CN110242242A - Follow-up type rotary annular preventer - Google Patents
Follow-up type rotary annular preventer Download PDFInfo
- Publication number
- CN110242242A CN110242242A CN201910625523.8A CN201910625523A CN110242242A CN 110242242 A CN110242242 A CN 110242242A CN 201910625523 A CN201910625523 A CN 201910625523A CN 110242242 A CN110242242 A CN 110242242A
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- China
- Prior art keywords
- piston
- sealing
- guide cylinder
- ring
- follow
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 239000003292 glue Substances 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to a kind of preventers, and in particular to a kind of follow-up type rotary annular preventer；Solving existing active rotating blowout preventer, structure is complicated, and rotation body component is more, leads to the technical problem that torque is big, calorific value is big, service life is short.The technical solution of the invention is as follows: a kind of follow-up type rotary annular preventer, including communicate up and down shell, the intracorporal rotating seal component of shell, piston, baffle ring and the master bushing being arranged in above shell are set；Master bushing is connected in rotating seal component top by connector sleeve；Shell includes connected upper housing and lower case；The piston that suit can move up and down in lower case；Rotating seal component includes guide cylinder, the hemispherical glue core being placed on above guide cylinder, the bearing block for being arranged in above hemispherical glue core and cooperating with the sealing of hemispherical glue core；Bearing block is supported in upper housing by the first support component；The upper end of guide cylinder is supported on piston by the second support component.
Description
Technical field
The present invention relates to a kind of preventers, and in particular to a kind of follow-up type rotary annular preventer.
Background technique
Rotating blowout preventer is the critical equipment of under balance pressure drilling, dedicated well-control equipment, is mounted on wellhead blowout preventor group most
Upper end.When brill opens oil-gas Layer, to avoid drilling well liquid columnpressure excessively high, so that killing or polluting oil-gas Layer, rotation is often utilized
Preventer seals well head annular space, and drilling well liquid columnpressure is made to be slightly below strata pressure, keeps the slight overflow in shaft bottom, realizes side
Side brill or round trip with pressure are sprayed, is also commonly used in workover treatment.
Active rotating blowout preventer is to add a set of slew bearing system in the inner cavity of annular preventer, existing active
Structure is complicated for rotating blowout preventer, and the component of rotary body is more, after the annular space in closing well between drilling tool and wellbore, the intracorporal glue of shell
The components such as core, piston are intended to drilling tool rotation with pressure, and torque is big, calorific value is big, service life is short.
Summary of the invention
In order to solve existing active rotating blowout preventer, structure is complicated, and the component of rotary body is more, leads to that torque is big, calorific value
Greatly, the short technical problem of service life, the present invention provides a kind of follow-up type rotary annular preventers.
The technical solution of the invention is as follows:
A kind of follow-up type rotary annular preventer, is characterized in that
Including communicate up and down shell, setting the intracorporal rotating seal component of shell, piston, baffle ring and be arranged in shell
The master bushing of top；The master bushing is connected in rotating seal component top by connector sleeve；The shell includes connected upper
Shell and lower case；
Piston bush can move up and down in lower case in lower case；
The rotating seal component includes guide cylinder, the hemispherical glue core being placed on above guide cylinder, is arranged in hemispherical
Bearing block above glue core and with the sealing cooperation of hemispherical glue core；
The bearing block is supported in upper housing by the first support component；
The upper end of the guide cylinder is supported on piston by the second support component, the outer wall of guide cylinder and piston inner wall and
Lower case inner wall is slidably connected；
The lower part of the piston is provided with the piston cavity of under shed；First is formed between the piston cavity and lower case
Seal cavity；
The second seal cavity is formed between the outer wall of the piston, baffle ring and lower case；
The first annular seal space body, the second seal cavity are communicated with outer liquid pressure oil respectively；
The lower case is double-layer structure, is respectively provided between the internal layer and guide cylinder of lower case, between piston and guide cylinder
High pressure rotary sealing circle.
Further, in order to extend the service life in the operating condition lower seal of high-pressure rotary, the high pressure rotary sealing
Circle includes sealing ring body, spring and "O"-ring；Sealing lip is equipped with inside the sealing ring body；Spring setting is sealing
In gap between lip and sealing ring body；Multiple annular grooves are arranged in the inner wall for sealing lip；The "O"-ring setting exists
The lateral surface of sealing ring body.
Further, in order to save material, production cost is reduced, the lower case includes main body, lower connector, sealing shroud
And pressure cap；The sealing shroud and main body are coaxially disposed, and sealing shroud is bolted in the bottom of main body；At the top of the sealing shroud
It is fixedly connected with pressure cap；High pressure rotary sealing circle between the lower case and guide cylinder is fixed in sealing shroud by support ring.
Further, in order to further decrease the frictional force between high pressure rotary sealing circle and guide cylinder, follow-up type rotation
Turning annular preventer further includes the deep groove ball bearing being arranged between the high pressure rotary sealing circle and the support ring.
Further, the upper housing includes upper connector and upper cover, and the upper connector is studding.
Further, the lower connector is studding.
Further, the upper lower connector is flange.
Further, which further includes the spacer ring being arranged between bearing block and baffle ring；Institute
The side wall for stating spacer ring is evenly distributed multiple oilholes.
Further, the follow-up type rotary annular preventer further include be arranged between piston and guide cylinder it is first rectangular
Sealing ring.
Further, the follow-up type rotary annular preventer further include be arranged between piston and sealing shroud it is second rectangular
Sealing ring.
The beneficial effect of the present invention compared with prior art is:
1, the component of the configuration of the present invention is simple, rotary body is few, after the annular space in closing well between drilling tool and wellbore, piston
It does not rotate, since the outer diameter of rotary body is smaller, so the present invention, when with tubing spinning, torque is small, radiates less, service life
It is long.
2, high pressure rotary sealing circle of the invention includes sealing ring body, spring, "O"-ring, is set inside sealing ring body
There is sealing lip, spring is arranged in the gap sealed between lip and sealing ring body, and the inner wall setting for sealing lip is multiple
The lateral surface of sealing ring body is arranged in annular groove, "O"-ring, and wearability and resistance to pressure are more preferable, and the service life is longer.
Detailed description of the invention
Fig. 1 is the main view of the embodiment of the present invention 1；
Fig. 2 is the top view of embodiment 1；
Fig. 3 is the structure chart of 1 mesohigh rotating seal ring of embodiment；
State diagram when Fig. 4 is 1 half envelope of embodiment (sealed tube)；
Fig. 5 is state diagram when embodiment 1 seals entirely and (closes empty well)；
Fig. 6 is the structure chart of the embodiment of the present invention 2；
Appended drawing reference are as follows:
1- upper housing, 101- upper connector, 102- upper cover, 2- lower case, connector under 201-, 202- main body, 203- are close
Big envelope, 204- pressure cap, the first fuel feed hole of 205-, the second fuel feed hole of 206-, 3- rotating seal component, 301- bearing block, 302- half
Spherical glue core, 303- guide cylinder, 4- piston, 401- piston cavity, the first support component of 5-, the second support component of 6-, 7- baffle ring,
8- high pressure rotary sealing circle, 801- sealing ring body, 8011- seal lip, 80111- groove, 802- spring, 803- " O " type
Circle, 10- first annular seal space body, the second seal cavity of 11-, 12- support ring, the first square seal ring of 13-, 14- second are rectangular close
Seal, 15- oil pipe, 16- connector sleeve, 17- master bushing, 18- spacer ring, 19- deep groove ball bearing.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
Embodiment 1:
Fig. 2 and Fig. 3 referring to Fig.1, the follow-up type rotary annular preventer, including communicate up and down shell, be arranged in shell
Interior rotating seal component 3, piston 4, baffle ring 7 and the master bushing 17 being arranged in above shell.Master bushing 17 passes through connector sleeve
16 are connected in 3 top of rotating seal component.Shell includes connected upper housing 1 and lower case 2.
Rotating seal component 3 exists including guide cylinder 303, the hemispherical glue core 302 for being placed on 303 top of guide cylinder, setting
The bearing block 301 hemispherical glue core 302 top and cooperated with the sealing of hemispherical glue core 302.
Bearing block 301 is supported in upper housing by the first support component 5.
The upper end of guide cylinder 303 is supported on piston 4 by the second support component 6, the lower end outer wall of guide cylinder 303 and work
It fills in 4 inner walls and lower case inner wall is slidably connected.Guide cylinder 303 can be integrated or seperated part, for the ease of installation
And material is saved, the guide cylinder 303 in the present embodiment is seperated part, support plate and guide section including sealed connection.First
Support component 5 and the second support component 6 can may be matching used alignment bearing and thrust for self-aligning thrust roller bearing
Bearing.In order to simplify structure, the first support component 5 and the second support component 6 in the present embodiment are thrust force aligning Roller Shaft
It holds.
The lower part of piston 4 is provided with the piston cavity 401 of under shed；First is formed between piston cavity 401 and lower case
Seal cavity 10.The second seal cavity 11 is formed between piston outer wall, baffle ring 7 and lower case.First annular seal space body 10, second is close
Envelope cavity 11 is communicated with outer liquid pressure oil respectively.Lower case 2 is double-layer structure, between the internal layer and guide cylinder 303 of lower case 2,
High pressure rotary sealing circle 8 is respectively provided between piston 4 and guide cylinder 303.
Upper housing 2 includes upper connector 101 and upper cover 102.
Lower case 2 includes lower connector 201, main body 202, sealing shroud 203 and pressure cap 204.Sealing shroud 203 and main body 202
Coaxial arrangement, sealing shroud 203 are bolted in the bottom of main body 202.Pressure cap 204 is fixedly connected at the top of sealing shroud 203.
High pressure rotary sealing circle 8 includes sealing ring body 801, spring 802 and "O"-ring 803.In sealing ring body 801
Portion is equipped with longer sealing lip 8011；It seals and is equipped with gap between lip 8011 and the outer ring of sealing ring body 801；Sealing lip
Multiple annular grooves 80111 are arranged in the inner hole of the axially disposed spring 802 of the outer wall on side 8011, sealing lip 8011.Sealing ring
"O"-ring 803 is set in the outer circle of ontology 801.In order to improve the reliability of sealing, also installed between piston 4 and guide cylinder 303
First square seal ring 13.
High pressure rotary sealing circle 8 between sealing shroud 203 and guide cylinder 303, by being arranged under high pressure rotary sealing circle 8
The support ring 12 in portion is fixed, and in order to further decrease the frictional force of high pressure rotary sealing circle 8 Yu guide cylinder 303, high-pressure rotary is close
Seal 8 and support ring 12 are equipped with deep groove ball bearing 19.There are also installed the second square seal rings between pressure cap 204 and guide cylinder 303
14。
Baffle ring 7 is arranged in the oral area of main body 202, and baffle ring 7 is pressed between upper cover 102 and main body 202；The small end of piston 4
It protrudes into the inner hole of baffle ring 7, and can be slided up and down in the inner hole of baffle ring 7.For the ease of lubricating bearing, bearing block 301 and gear
Spacer ring 18 is set between ring 7, and the side wall of spacer ring 18 is evenly distributed multiple oilholes.
Two the first fuel feed holes 205 and two the second fuel feed holes 206 are set in main body 202；Two the first fuel feed holes 205 are
It is connected to first annular seal space body 10；Two the second fuel feed holes 206 are connected to the second seal cavity 11.
Referring to Fig. 4 and Fig. 5, the working principle of the follow-up type rotary annular preventer is as follows:
When sealing referring to Fig. 4, half (when sealed tube), 205 oil inlet of the first fuel feed hole, hydraulic oil enters first annular seal space body 10
Interior, piston 4 drives 303 uplink of guide cylinder, and hemispherical glue core 301 holds oil pipe 15 tightly after being compressed.
When well internal fault excludes, when having needed flowline 15,206 oil inlet of the second fuel feed hole, hydraulic oil enters the second sealing
In cavity 11, piston 4 drives 303 downlink of guide cylinder, and hemispherical glue core 301 recoils to original state, can play flowline 15, into
Row subsequent processing.
Referring to Fig. 5, full when envelope (when closing empty well), 205 oil inlet of the first fuel feed hole, hydraulic oil enters first annular seal space body 10
Interior, piston 4 drives 303 uplink of guide cylinder, and guide cylinder 303 compresses hemispherical glue core 301, and hemispherical glue core 301 is interior after being compressed
Hole is shunk completely, and empty well is sealed.
Embodiment 2:
Referring to Fig. 6, embodiment 2 is similar to 1 structure of embodiment, and difference is only that: the lower connector 201 in embodiment 2 is
Flange.
The above description is only an embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, all to utilize the present invention
Equivalent structure transformation made by specification and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and wraps
It includes in scope of patent protection of the invention.
Claims (10)
1. a kind of follow-up type rotary annular preventer, it is characterised in that: including communicate up and down shell, be arranged in the intracorporal rotation of shell
Turn seal assembly (3), piston (4), baffle ring (7) and the master bushing (17) being arranged in above shell；The master bushing (17) is logical
It crosses connector sleeve (16) and is connected in rotating seal component (3) top；The shell includes connected upper housing (1) and lower case (2)；
Piston (4) is sleeved in lower case (2), and can be moved up and down in lower case (2)；
The rotating seal component (3) includes guide cylinder (303), the hemispherical glue core being placed on above guide cylinder (303)
(302), the bearing block (301) for being arranged above hemispherical glue core (302) and cooperating with hemispherical glue core (302) sealing；
The bearing block (301) is supported in upper housing (1) by the first support component (5)；
The upper end of the guide cylinder (303) is supported on piston (4) by the second support component (6), the outer wall of guide cylinder (303)
It is slidably connected with piston (4) inner wall and lower case (2) inner wall；
The lower part of the piston (4) is provided with the piston cavity (401) of under shed；The piston cavity (401) and lower case (2)
Between formed first annular seal space body (10)；
The second seal cavity (11) are formed between the outer wall of the piston (4), baffle ring (7) and lower case (2)；
The first annular seal space body (10), the second seal cavity (11) are communicated with outer liquid pressure oil respectively；
The lower case (2) is double-layer structure, between the internal layer and guide cylinder (303) of lower case (2), piston (4) and guide cylinder
(303) high pressure rotary sealing circle (8) are respectively provided between.
2. follow-up type rotary annular preventer according to claim 1, it is characterised in that: the high pressure rotary sealing circle
It (8) include sealing ring body (801), spring (802) and "O"-ring (803)；It is equipped with inside the sealing ring body (801) close
It seals lip (8011)；Spring (802) setting is in the gap between sealing lip (8011) and sealing ring body (801)；Sealing
Multiple annular grooves (80111) are arranged in the inner wall of lip (8011)；The "O"-ring (803) is arranged in sealing ring body (801)
Lateral surface.
3. follow-up type rotary annular preventer according to claim 1 or 2, it is characterised in that: the lower case (2) includes
Lower connector (201), main body (202), sealing shroud (203) and pressure cap (204)；The sealing shroud (203) and main body (202) are coaxial
Setting, sealing shroud (203) are bolted in the bottom of main body (202)；Pressure cap is fixedly connected at the top of the sealing shroud (203)
(204)；High pressure rotary sealing circle (8) between the lower case (2) and guide cylinder (303) is fixed on close by support ring (12)
In big envelope (203).
4. follow-up type rotary annular preventer according to claim 3, it is characterised in that: further include being arranged in the high pressure
Deep groove ball bearing (19) between rotating seal ring (8) and the support ring (12).
5. follow-up type rotary annular preventer according to claim 4, it is characterised in that: the upper housing (1) includes upper
Connector (101) and upper cover (102), the upper connector (101) are studding.
6. follow-up type rotary annular preventer according to claim 5, it is characterised in that: the lower connector (201) is
Studding.
7. follow-up type rotary annular preventer according to claim 5, it is characterised in that: the upper lower connector
It (201) is flange.
8. follow-up type rotary annular preventer according to claim 6, it is characterised in that: further include being arranged in bearing block
(301) spacer ring (18) between baffle ring (7)；The side wall of the spacer ring (18) is evenly distributed multiple oilholes.
9. follow-up type rotary annular preventer according to claim 8, it is characterised in that: further include being arranged in piston (4)
The first square seal ring (13) between guide cylinder (303).
10. follow-up type rotary annular preventer according to claim 9, it is characterised in that: further include being arranged in guide cylinder
(303) the second square seal ring (14) between sealing shroud (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625523.8A CN110242242B (en) | 2019-07-11 | Follow-up rotary annular blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625523.8A CN110242242B (en) | 2019-07-11 | Follow-up rotary annular blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242242A true CN110242242A (en) | 2019-09-17 |
| CN110242242B CN110242242B (en) | 2024-06-28 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898319A (en) * | 2023-02-24 | 2023-04-04 | 四川新为橡塑有限公司 | Compound annular preventer of two rubber cores |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705801A (en) * | 2009-11-06 | 2010-05-12 | 宝鸡石油机械有限责任公司 | combined annular blowout preventer |
| CN103470207A (en) * | 2013-10-09 | 2013-12-25 | 盐城亚雄机械制造有限公司 | Annular preventer with internally-arranged circulating water cooling system |
| RU2527054C1 (en) * | 2013-07-08 | 2014-08-27 | Закрытое акционерное общество "Научно-производственное предприятие "СибБурМаш" | Spherical circular rotary preventer |
| CN106065769A (en) * | 2016-08-12 | 2016-11-02 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | Drilling and repairing well annular preventer |
| CN210217683U (en) * | 2019-07-11 | 2020-03-31 | 西安宇星石油机械新技术开发有限公司 | Follow-up type rotary annular blowout preventer |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705801A (en) * | 2009-11-06 | 2010-05-12 | 宝鸡石油机械有限责任公司 | combined annular blowout preventer |
| RU2527054C1 (en) * | 2013-07-08 | 2014-08-27 | Закрытое акционерное общество "Научно-производственное предприятие "СибБурМаш" | Spherical circular rotary preventer |
| CN103470207A (en) * | 2013-10-09 | 2013-12-25 | 盐城亚雄机械制造有限公司 | Annular preventer with internally-arranged circulating water cooling system |
| CN106065769A (en) * | 2016-08-12 | 2016-11-02 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | Drilling and repairing well annular preventer |
| CN210217683U (en) * | 2019-07-11 | 2020-03-31 | 西安宇星石油机械新技术开发有限公司 | Follow-up type rotary annular blowout preventer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898319A (en) * | 2023-02-24 | 2023-04-04 | 四川新为橡塑有限公司 | Compound annular preventer of two rubber cores |
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