CN106089143B - A kind of deepwater drilling three-level sealing globe joint - Google Patents
A kind of deepwater drilling three-level sealing globe joint Download PDFInfo
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- CN106089143B CN106089143B CN201610436789.4A CN201610436789A CN106089143B CN 106089143 B CN106089143 B CN 106089143B CN 201610436789 A CN201610436789 A CN 201610436789A CN 106089143 B CN106089143 B CN 106089143B
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- ball valve
- solenoid ball
- spherical surface
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- 238000007789 sealing Methods 0.000 title claims abstract description 135
- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 239000004576 sand Substances 0.000 claims abstract description 32
- 230000001105 regulatory Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000280 densification Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 210000003284 Horns Anatomy 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000023298 conjugation with cellular fusion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000021037 unidirectional conjugation Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000003014 reinforcing Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
- E21B33/038—Connectors used on well heads, e.g. for connecting blow-out preventer and riser
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
- E21B33/0355—Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
- E21B33/037—Protective housings therefor
Abstract
The present invention relates to a kind of deepwater drilling three-levels to seal globe joint, it is mainly made of core, anti-sand cover, sealing system, electromagnetic control system, automatic pressure difference regulating system.Core center is equipped with through-hole, and bottom is horn opening；The anti-sand cover is taper and ring-shaped combination anti-sand cover, and it is assembled to pass through stud by four pieces of taper thin plates；The sealing system is made of core, third level spherical surface combination sealing, third level sealing element, third level combination sealing, second level sealing element, second level spherical surface combination sealing, second level combination sealing, first order combination sealing, first order sealing element, first order spherical surface combination sealing, shell；Electromagnetic control system is by the first Solenoid ball valve, the second Solenoid ball valve, third Solenoid ball valve, the 4th Solenoid ball valve, the 5th Solenoid ball valve composition；Automatic pressure difference regulating system is made of level-one pressurized cylinder and two-stage supercharging cylinder；Good seal performance of the present invention；It is easy to operate, it is highly-safe；Suitable for deep water and ultra deepwater drilling.
Description
Technical field
The present invention relates to a kind of deepwater drilling three-levels to seal globe joint, both the Universal rotary connector of multistage ball face sealing,
More particularly to the globe joint suitable for offshore oil deepwater drilling device, belong to mechanical engineering engineering device technique field.
Background technique
In offshore oil deepwater drilling device, globe joint is a kind of connection dress between marine riser and preventer
It sets.Upper part connects marine riser, and lower part is fixed on preventer.Device external operating environment is seawater, and internal work environment is
The drilling fluid of high pressure, thus it is higher to the sealing requirements of globe joint.When marine riser and drill ship are by utilizing ocean current, stormy waves
Effect when, jointing can rotate in a circumferential direction and around the centre of sphere in 0~360 ° in -10 °~10 ° radial deflections around axis, to realize
This function needs a kind of good seal performance, is not only able to achieve and rotates in a circumferential direction, but also is able to achieve the attachment device of radial deflection,
Globe joint is the optimal selection for realizing the function.
Foreign countries are to the research that the research for the globe joint for being suitable for deep water is mostly to its terms of mechanics, such as U.S.
T.J.Kozik et al. has carried out detailed analysis to the complicated stress that globe joint is subject to, but does not relate to its detailed construction
And.It is domestic that well drilling of shallow sea is substantially only stayed in the research of globe joint at present, and mostly sealed using single-stage, meet not
Demand of the deepwater drilling to globe joint and its sealing technique, existing deepwater drilling connector generally use flexible coupling, so
And this connector so that its rotational angle is small, and is easy to produce fatigue rupture due to the limitation of flexible body.The present invention specially needle
A kind of three-level sealing suitable for deepwater drilling is had studied to high performance this technical problem of deep water globe joint is lacked at present
Globe joint.
Summary of the invention
It is an object of the invention to overcome current deepwater drilling globe joint there are technical problem, a kind of be applicable in is provided
Seal globe joint in the three-level of deepwater drilling, be suitable for 3000 meters of depth of waters, good seal performance, highly-safe, rotational angle it is big,
Multi-stage sealed globe joint.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of deepwater drilling three-level of the present invention seals globe joint, mainly by core, anti-sand cover, sealing system, electromagnetism control
System processed, automatic pressure difference regulating system composition.The core center is equipped with through-hole, and bottom is horn opening, welds at axle journal
It is connected to support ring, support ring is equipped with 8 screw holes, and the axis being able to achieve around spherojoint rotates in a circumferential direction in 0 °~360 °, around ball
The heart is in -10 °~10 ° radial deflections.
The anti-sand cover is taper and ring-shaped combination anti-sand cover, assembled by stud by four pieces of taper thin plates,
Its main body is taper, and top level welds annular sheet, and annular sheet is welded in bottom end vertically.Entire anti-sand cover passes through 8 screws
It is fixed in support ring, prevents anti-sand cover from moving up and down and rotating at the axle journal of core.The anti-sand cover can both prevent sundries from
Vertical direction falls into device opening, and can prevent sundries from entering device opening, taper from horizontal direction under ocean current effect
Anti-sand cover can also be such that the sundries being deposited on anti-sand cover falls to except device automatically under the effect of gravity, using reinforcing plate type assembly
Mode can make easy for installation and bear the torque that anti-sand cover in installation process overcomes seawater resistance to be subject to
The sealing system is by core, third level spherical surface combination sealing, third level sealing element, third level combination sealing,
Second level spherical surface combination sealing, second level sealing element, second level combination sealing, first order spherical surface combination sealing, first order sealing element,
First order combination sealing, shell composition.Third level sealing element is subdivision structure, is equipped with step at small end face outer diameter, in step
Third level combination sealing is installed, groove is equipped in the spherical surface of third level sealing element, third level spherical surface combination sealing is installed in groove；
Second level sealing element is monolithic construction, and step is equipped at large end face outer diameter, is equipped with groove in the spherical surface of second level sealing element,
Spherical surface combination sealing in the second level is installed in groove；First order sealing element is monolithic construction, is equipped with step at small end face outer diameter；
It is equipped with groove in the spherical surface of first order sealing element, first order spherical surface combination sealing is installed in groove.The spherical surface of every level-one sealing element
All sealed with the mating spherical surfaces of core, meanwhile, every level-one spherical surface combination sealing is all sealed with the mating spherical surfaces of core, prevents liquid
It is leaked from spherical surface；In addition, inner surface of outer cover both ends are respectively provided with a step, two grooves with " back-to-back " on step are recessed
Second level combination sealing and first order combination sealing are installed respectively in slot, prevent liquid from leaking from inner surface of outer cover, both the above
The sealing of form collectively constitutes the sealing system of device.
The electromagnetic control system is by the first Solenoid ball valve, the second Solenoid ball valve, third Solenoid ball valve, the 4th electromagnetic ball
Valve, the 5th Solenoid ball valve composition.First Solenoid ball valve is Solenoid ball valve open in usual, is parallel to the small end of level-one pressurized cylinder；Second
Solenoid ball valve is normally closed type Solenoid ball valve, is series at the big end of level-one pressurized cylinder, and third Solenoid ball valve is Solenoid ball valve open in usual,
It connects with the flange of high-pressure sealing chamber bottom, the 5th Solenoid ball valve is normally closed type Solenoid ball valve, is series at the big of level-one pressurized cylinder
End, it is then in parallel with the 4th Solenoid ball valve open in usual again.During the installation process, solenoid valve powers off, and Solenoid ball valve open in usual is equal
It opens, normally closed type Solenoid ball valve is turned off, and is realized and is filled the water in installation process from trend seal chamber, while making the work of two pressurized cylinders
It fills in and is maintained at big end under the pressure effect of seawater, guarantee that pressurization piston has enough strokes.After the installation is completed, electromagnetic ball
Valve is powered, and Solenoid ball valve open in usual is turned off at this time, and normally closed type Solenoid ball valve is opened, and forms two seal chambers.
The automatic pressure difference regulating system is made of level-one pressurized cylinder and two-stage supercharging cylinder.Level-one pressurized cylinder big end and second
Solenoid ball valve series connection, small end are in parallel with the first Solenoid ball valve.Two-stage supercharging cylinder big end is connected later again with the 5th Solenoid ball valve
It is in parallel with the 4th Solenoid ball valve：Two-stage supercharging cylinder big end side and low pressure seal chamber are connected by flange after parallel connection, small end and
High-pressure sealing chamber is connected by flange.After Solenoid ball valve is powered, normally closed type Solenoid ball valve is opened, and Solenoid ball valve open in usual is equal
It closes, level-one pressurized cylinder realizes that level-one is pressurized automatically, adjusts the pressure difference between low pressure seal chamber and seawater, and two-stage supercharging cylinder is automatic
It realizes two-stage supercharging, adjusts the drilling fluid in the pressure difference and high-pressure sealing chamber and device between high-pressure sealing chamber and low pressure seal chamber
Between pressure difference.In addition, drilling fluid enters high-pressure sealing chamber when first order seal fails, keep high pressure sealing cavity pressure fast
Speed increases, and the piston of two-stage supercharging cylinder is mobile to big end under pressure, is pressurized for low pressure seal chamber, automatic to reduce at this time two
Pressure difference between seal chamber plays automatic pressure difference adjustment effect.
It is an advantage of the invention that：It is big with rotational angle, good seal performance；It is easy to operate, it is highly-safe；Suitable for deep water
And ultra deepwater drilling.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of deepwater drilling three-level of the present invention seals globe joint；
Fig. 2 is electromagnetic control system schematic diagram of the invention；
Fig. 3 is positioning ring schematic diagram of the invention；
Fig. 4 is that the third level of the invention seals schematic diagram.
In figure：1. core, 2. support rings, 3. anti-sand covers, 4. upper end covers, 5. third level spherical surface combination sealings, 6. third level
Sealing element, 7. third level combination sealings, 8. first Solenoid ball valves, 9. level-one pressurized cylinders, 10. second Solenoid ball valves, 11. shells,
12. low pressure seal chamber, 13. positioning rings, 14. second level sealing elements, 15. second level spherical surface combination sealings, the combination of 16. second level are close
Envelope, 17. third Solenoid ball valves, 18. high-pressure sealing chambers, 19. first order combination sealings, 20. first order sealing elements, 21. first order
Spherical surface combination sealing, 22. lower covers, 23. two-stage supercharging cylinders, 24. the 4th Solenoid ball valves, 25. the 5th Solenoid ball valves.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing：
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of deepwater drilling three-level of the present invention seals globe joint, mainly by core 1,
Anti-sand cover 3, sealing system, electromagnetic control system, automatic pressure difference regulating system composition.1 center of core is equipped with through-hole, bottom
Portion is horn opening, and support ring is welded at axle journal, and support ring is equipped with 8 screw holes, is able to achieve the axis around spherojoint
It rotates in a circumferential direction in 0 °~360 °, is in -10 °~10 ° radial deflections around the centre of sphere.
The anti-sand cover 3 is taper and ring-shaped combination anti-sand cover, assembled by stud by four pieces of taper thin plates,
Its main body is taper, and top level welds annular sheet, and annular sheet is welded in bottom end vertically；Entire anti-sand cover 3 passes through 8 screws
It is fixed in support ring 2, prevents anti-sand cover 3 from moving up and down and rotating at the axle journal of core 1.The anti-sand cover 3 can both prevent miscellaneous
Object falls into device opening from vertical direction, and can prevent sundries from entering device opening from horizontal direction under ocean current effect,
Taper anti-sand cover can also be such that the sundries being deposited on anti-sand cover 3 falls to except device automatically under the effect of gravity；Using gusset
Formula erection method can make easy for installation and bear the torque that anti-sand cover 3 overcomes seawater resistance to be subject in installation process
The sealing system is by core 1, third level spherical surface combination sealing 5, third level sealing element 6, third level combination sealing
7, second level sealing element 14, second level spherical surface combination sealing 15, second level combination sealing 16, first order combination sealing 19, first
Grade sealing element 20, first order spherical surface combination sealing 21, shell 11 form.Third level sealing element 6 is subdivision structure, outside small end face
It is equipped with step at diameter, third level combination sealing 7 is installed in step, groove, peace in groove are equipped in the spherical surface of third level sealing element 6
Fill third level spherical surface combination sealing 5；Second level sealing element 14 is monolithic construction, is equipped with step at large end face outer diameter, second
It is equipped with groove in the spherical surface of grade sealing element 14, second level spherical surface combination sealing 15 is installed in groove；First order sealing element 20 is whole
Body formula structure is equipped with step at small end face outer diameter；Groove, installation first in groove are equipped in the spherical surface of first order sealing element 20
Grade spherical surface combination sealing 21.The spherical surface of every level-one sealing element is all sealed with the mating spherical surfaces of core, meanwhile, every level-one spherical surface combination
Sealing is all sealed with the mating spherical surfaces of core, prevents liquid from leaking from spherical surface；In addition, 11 inner surface both ends of shell are respectively provided with one
A step installs second level combination sealing 16 in groove respectively and the first order combines with two grooves of " back-to-back " on step
Sealing 19, prevents liquid from leaking from the inner surface of shell 11, and the sealing of both the above form collectively constitutes the sealing system of device.
The electromagnetic control system is by the first Solenoid ball valve 8, the second Solenoid ball valve 10, third Solenoid ball valve 17, the 4th electricity
Magnetic ball valve 24, the 5th Solenoid ball valve 25 composition.First Solenoid ball valve 8 is Solenoid ball valve open in usual, is parallel to level-one pressurized cylinder 9
Small end；Second Solenoid ball valve 10 is normally closed type Solenoid ball valve, is series at the big end of level-one pressurized cylinder 9, third Solenoid ball valve 17 is
Solenoid ball valve open in usual is connected with the flange of 18 bottom of high-pressure sealing chamber, and the 5th Solenoid ball valve 25 is normally closed type Solenoid ball valve, string
It is coupled to the big end of two-stage supercharging cylinder 23, it is then in parallel with the 4th Solenoid ball valve 24 open in usual again.During the installation process, solenoid valve
Power-off, Solenoid ball valve open in usual are opened, and normally closed type Solenoid ball valve is turned off, and are realized and are infused in installation process from trend seal chamber
Water, while the piston of two pressurized cylinders being made to be maintained at big end under the pressure effect of seawater, it is enough to guarantee that pressurization piston has
Stroke.After the installation is completed, Solenoid ball valve is powered, and Solenoid ball valve open in usual is turned off at this time, and normally closed type Solenoid ball valve is opened, shape
At two seal chambers.
The automatic pressure difference regulating system is made of level-one pressurized cylinder 9 and two-stage supercharging cylinder 23.9 big end of level-one pressurized cylinder with
The series connection of second Solenoid ball valve 10, small end are in parallel with the first Solenoid ball valve 8.23 big end of two-stage supercharging cylinder and the 5th Solenoid ball valve 25
In parallel with the 4th Solenoid ball valve 24 again after series connection, 23 big end side of two-stage supercharging cylinder and low pressure seal chamber 12 pass through method after parallel connection
Orchid is connected, and small end and high-pressure sealing chamber 18 are connected by flange.After Solenoid ball valve is powered, normally closed type Solenoid ball valve is beaten
Open, Solenoid ball valve open in usual is turned off, and level-one pressurized cylinder 9 realizes level-one pressurization automatically, adjust low pressure seal chamber 12 and seawater it
Between pressure difference, two-stage supercharging cylinder 23 realizes two-stage supercharging automatically, adjusts the pressure between high-pressure sealing chamber 18 and low pressure seal chamber 12
The pressure difference between drilling fluid in difference and high-pressure sealing chamber 18 and device.In addition, when first order sealing element 20 fails, drilling fluid
Into high-pressure sealing chamber 18,18 pressure of high-pressure sealing chamber is made to increase sharply, the piston of two-stage supercharging cylinder 23 under pressure to
Big end is mobile, is pressurized for low pressure seal chamber 12, and the automatic pressure difference reduced between two seal chambers at this time plays automatic pressure difference and adjusts and makees
With.
In core 1 there is support ring 2 to prevent anti-sand cover 3 from occurring at the axle journal of core 1 to support fixed anti-sand cover 3
It moves up and down or rotates；Anti-sand cover 3 uses taper and ring-shaped combination anti-sand cover, can both prevent sundries from falling into device from vertical direction
Opening, and can prevent sundries from entering device opening from horizontal direction under ocean current effect, taper anti-sand cover can also make to accumulate
Sundries on anti-sand cover 3 is fallen to except device automatically under the effect of gravity, can make to install using reinforcing plate type erection method
It is convenient, and the torque that anti-sand cover 3 overcomes seawater resistance to be subject in installation process can be born；Upper end cover 4 and third level sealing element 6 are all
Using subdivision structure, it is easily installed and measures；Sealing system includes two kinds of seal forms, wherein third level sealing element 6, the third level
Combination sealing 7, positioning ring 13, second level sealing element 14, second level combination sealing 16, shell 11, first order sealing element 20, first
Grade combination sealing 19 is the first seal form, mainly prevents liquid from leaking along inner surface of outer cover, third level sealing element 6, the
Three-level spherical surface combination sealing 5, second level sealing element 14, second level spherical surface combination sealing 15, first order sealing element 20, first order ball
Face combination sealing 21, core 1 are second of seal form, mainly prevent liquid from leaking along spherical surface, the sealing of both forms
Collectively constitute the sealing system of device；Electromagnetic control system realizes the automatic charging device of seawater during the installation process and guarantees level-one
Pressurized cylinder 9, two-stage supercharging cylinder 23 piston be in big end bottom, guarantee that pressurized cylinder can work normally, while realizing and installing
Two seal chambers are separated automatically after finishing, low pressure seal chamber 12 and high-pressure sealing chamber 18 are automatically formed under the action of pressurized cylinder；
Automatic pressure difference regulating system is made of level-one pressurized cylinder 9 and two-stage supercharging cylinder 23, and level-one pressurized cylinder 9 realizes level-one pressurization automatically,
The pressure difference between low pressure seal chamber 12 and seawater is adjusted, two-stage supercharging cylinder 23 realizes two-stage supercharging automatically, adjusts high-pressure sealing chamber
The pressure difference between drilling fluid in pressure difference between 18 and low pressure seal chamber 12 and high-pressure sealing chamber 18 and device.In addition, when the
When primary seal part 20 fails, drilling fluid enters high-pressure sealing chamber 18, so that 18 pressure of high-pressure sealing chamber is increased sharply, two-stage supercharging
The piston of cylinder 23 is mobile to big end under pressure, is pressurized for low pressure seal chamber 12, automatic to reduce between two seal chambers at this time
Pressure difference, play automatic pressure difference adjustment effect.
Claims (3)
1. a kind of deepwater drilling three-level seals globe joint, mainly by core (1), anti-sand cover (3), sealing system, Electromagnetic Control
System, automatic pressure difference regulating system composition, it is characterised in that：Core (1) center is equipped with through-hole, and bottom is tubaeform opens
Mouthful, support ring is welded at axle journal；The anti-sand cover (3) is taper and ring-shaped combination anti-sand cover, is passed through by four pieces of taper thin plates
Stud is assembled, and main body is taper, and top level welds annular sheet, and annular sheet is welded in bottom end vertically；It is described
Sealing system is sealed by third level spherical surface combination sealing (5), third level sealing element (6), third level combination sealing (7), the second level
Part (14), second level spherical surface combination sealing (15), second level combination sealing (16), first order combination sealing (19), the first order are close
Sealing (20), first order spherical surface combination sealing (21), shell (11) composition；The electromagnetic control system is by the first Solenoid ball valve
(8), the second Solenoid ball valve (10), third Solenoid ball valve (17), the 4th Solenoid ball valve (24), the 5th Solenoid ball valve (25) composition；
First Solenoid ball valve (8) is Solenoid ball valve open in usual, is parallel to the small end of level-one pressurized cylinder (9)；Second Solenoid ball valve (10) is
Normally closed type Solenoid ball valve is series at the big end of level-one pressurized cylinder (9)；Third Solenoid ball valve (17) is Solenoid ball valve open in usual, with
The flange of high-pressure sealing chamber (18) bottom is connected；5th Solenoid ball valve (25) is normally closed type Solenoid ball valve, is series at two-stage supercharging
The big end of cylinder (23), it is then in parallel with the 4th Solenoid ball valve (24) open in usual again；The automatic pressure difference regulating system is by level-one
Pressurized cylinder (9) and two-stage supercharging cylinder (23) composition；Level-one pressurized cylinder (9) big end is connected with the second Solenoid ball valve (10), small end
It is in parallel with the first Solenoid ball valve (8)；Two-stage supercharging cylinder (23) big end is electric with the 4th again after connecting with the 5th Solenoid ball valve (25)
Magnetic ball valve (24) is in parallel, and two-stage supercharging cylinder (23) big end side and low pressure seal chamber (12) are connected by flange after parallel connection, small
End is connected with high-pressure sealing chamber (18) by flange.
2. a kind of deepwater drilling three-level according to claim 1 seals globe joint, it is characterised in that：Third level sealing element
(6) it is subdivision structure, step is equipped at small end face outer diameter, third level combination sealing (7) are installed in step, third level sealing element
(6) it is equipped with groove in spherical surface, third level spherical surface combination sealing (5) are installed in groove；Second level sealing element (14) is monoblock type
Structure is equipped with step at large end face outer diameter, and groove is equipped in the spherical surface of second level sealing element (14), installs the second level in groove
Spherical surface combination sealing (15)；First order sealing element (20) is monolithic construction, is equipped with step at small end face outer diameter；The first order is close
It is equipped with groove in the spherical surface of sealing (20), first order spherical surface combination sealing (21) are installed in groove；Shell (11) inner surface both ends
It is respectively provided with a step, there are two grooves of " back-to-back " on step, it is close that the combination of the installation second level is respectively corresponded in two grooves
(16) and first order combination sealing (19) are sealed, prevents liquid from leaking from the inner surface of shell (11).
3. a kind of deepwater drilling three-level according to claim 1 seals globe joint, it is characterised in that：When Solenoid ball valve is logical
After electricity, normally closed type Solenoid ball valve is opened, and Solenoid ball valve open in usual is turned off；Level-one pressurized cylinder (9) realizes level-one pressurization automatically,
Adjust the pressure difference between low pressure seal chamber (12) and seawater；Two-stage supercharging cylinder (23) realizes two-stage supercharging automatically, adjusts high densification
It seals in the pressure difference between chamber (18) and low pressure seal chamber and high-pressure sealing chamber (18) and deepwater drilling three-level sealing globe joint
Pressure difference between drilling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436789.4A CN106089143B (en) | 2016-06-16 | 2016-06-16 | A kind of deepwater drilling three-level sealing globe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436789.4A CN106089143B (en) | 2016-06-16 | 2016-06-16 | A kind of deepwater drilling three-level sealing globe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089143A CN106089143A (en) | 2016-11-09 |
| CN106089143B true CN106089143B (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610436789.4A Active CN106089143B (en) | 2016-06-16 | 2016-06-16 | A kind of deepwater drilling three-level sealing globe joint |
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| CN (1) | CN106089143B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5314024A (en) * | 1992-08-10 | 1994-05-24 | Cooper Industries, Inc. | Angular and radial self-aligning coupling |
| CN2743533Y (en) * | 2004-11-05 | 2005-11-30 | 张凤 | Multifunction eruption proof device |
| CN201310313Y (en) * | 2008-11-07 | 2009-09-16 | 中国石油天然气股份有限公司 | Blowout preventer of sucker rod |
| US8960306B2 (en) * | 2012-12-21 | 2015-02-24 | Hydril Usa Manufacturing Llc | Annular blowout preventer and lower marine riser package connector unit |
| CN205154090U (en) * | 2015-11-30 | 2016-04-13 | 张国军 | Transfer oblique wear -resisting packing box |
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2016
- 2016-06-16 CN CN201610436789.4A patent/CN106089143B/en active Active
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| Publication number | Publication date |
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| CN106089143A (en) | 2016-11-09 |
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