CN106639961B - The closed rotating blowout preventer of under balance pressure drilling environmental protection - Google Patents
The closed rotating blowout preventer of under balance pressure drilling environmental protection Download PDFInfo
- Publication number
- CN106639961B CN106639961B CN201710072389.4A CN201710072389A CN106639961B CN 106639961 B CN106639961 B CN 106639961B CN 201710072389 A CN201710072389 A CN 201710072389A CN 106639961 B CN106639961 B CN 106639961B
- Authority
- CN
- China
- Prior art keywords
- sealing
- shell
- ring
- oil
- rotation assembly
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 230000007613 environmental effect Effects 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 227
- 239000003921 oil Substances 0.000 claims description 102
- 239000003292 glue Substances 0.000 claims description 29
- 238000004026 adhesive bonding Methods 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 22
- 239000010687 lubricating oil Substances 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000110 cooling liquid Substances 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 210000002445 nipple Anatomy 0.000 claims description 10
- 239000004519 grease Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000004781 supercooling Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 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
- E21B33/08—Wipers; Oil savers
- E21B33/085—Rotatable packing means, e.g. rotating 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)
- Earth Drilling (AREA)
Abstract
The invention discloses the closed rotating blowout preventers of under balance pressure drilling environmental protection, the rotating blowout preventer is made of rotation assembly (1) and shell (2) two parts, rotation assembly (1) is mounted on shell (2) by sealing ring (3), has been integrally formed the closed rotating blowout preventer of under balance pressure drilling environmental protection；There are two the grooves for being spaced 150 degree in the enclosure body (4) of shell (2), it is same on rotation assembly (1) shell (36) that there are two the boss for being spaced 150 degree, the uniqueness of setting angle between shell (2) and rotation assembly (1) is ensured that in this way, and sealing ring (3) seals up the sealing surface between rotation assembly (1) and shell (2).The mud that the present invention takes drilling rod out of out of well is sealed in the inside of rotating blowout preventer, and the environment effectively protected around well head in well head is fallen so as to avoid mud.
Description
Technical field
The present invention relates to mechanical devices, and in particular to the under balance pressure drilling environmental protection used in petroleum under balance pressure drilling is closed
Rotating blowout preventer.
Background technique
Under-balanced drilling technology has evolved into ripe, and its discovery and protection oil-gas Layer and improves bit speed etc.
Effect is also accepted.With the rapid development of petroleum industry, field of oil drilling is using under-balanced drilling technology as one kind
One preferred technique.Environmental renovation is carried out energetically by country simultaneously, and to the production equipment of petroleum industry, more stringent requirements are proposed.
All there is pollute environment to current rotating blowout preventer employed both at home and abroad in use.Specifically go out
During pulling out of hole now, when drilling rod is played on platform from shaft bottom, the mud in well can be taken out of well head by drilling rod, and fall
On ground and platform, greatly pollution is generated to ambient enviroment.
Summary of the invention
It is an object of the invention to: it provides a kind of under balance pressure drilling environmental protection closed rotating blowout preventer, avoids underbalance
Mud falls the technical problem of pollution ambient enviroment in drilling process, protects the environment around well head.
The technical solution of the invention is as follows: the closed rotating blowout preventer of under balance pressure drilling environmental protection is by rotation assembly and shell
Body two parts composition, rotation assembly are mounted on shell by sealing ring；There are two be spaced 150 degree in the enclosure body of shell
Groove, it is same there are two the boss at 150 degree of interval on the shell of rotation assembly, it ensures that between shell and rotation assembly in this way
The uniqueness of setting angle；By the withdrawal of jackscrew device, rotation assembly enters enclosure body and is mounted on shell, passes through jackscrew
Rotation assembly is firmly installed on shell by the elongation of device；Sealing ring seals up the sealing between rotation assembly and shell
Face, this completes the installations of the closed rotating blowout preventer of under balance pressure drilling environmental protection.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, sealing ring inner headed face is bonded with rotation assembly,
Periphery is designed to arc surface, is easier to form sealing into shell and therewith in this way, entire sealing ring is closely embedded in rotation
Turn in the fixing groove of assembly.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, on the inner hole of the enclosure body of shell there are two
The groove at 150 degree of interval, for being bumped into rotation assembly；The upper flange of enclosure body installs a cooling liquid inlet device, one
Cooling liquid outlet device, a lubricating oil inlet device and 12 jackscrew devices；Two have been milled on periphery in the middle part of enclosure body
A plane, is connected to large flange pipe nipple and small flange spool with bolt, steel gasket ring respectively, and large flange pipe nipple connects the plate that surges
Valve, small flange spool connect pressure sensor.
The lubricating oil inlet device is by seat, filler pressure under sealing bar, O-ring, the filler seat of honour, airtight and watertight padding, filler
Lid composition；Sealing bar top design enters the grease channel of rotation assembly at 60 degree of angle cones, sealing bar more convenient in this way
In, sealing bar is formed by O-ring and rotation assembly and is sealed, and is had screw thread in the middle part of sealing bar and is tightened on enclosure body by screw thread
On, sealing bar is threaded into and screws out rotation assembly by this, and sealing bar tail portion is equipped with threaded hole, for connecting lubricating oil pipe
Line；The filler seat of honour is in the inner hole of enclosure body, and airtight and watertight padding is on the filler seat of honour, and seat is mounted in airtight and watertight padding under filler
On, gland withstands seat under filler, and gland is tightened in enclosure body by screw thread, sealing bar by airtight and watertight padding with
Enclosure body forms sealing；Cooling liquid outlet device and cooling liquid inlet device are identical as the structure of lubricating oil inlet device.
The jackscrew device is by seat, sealing ring pressure cap group under jackscrew bar, the sealing ring seat of honour, combined seal ring, sealing ring
At；For jackscrew bar top design at 45 degree of angle cones, the part that the shell of rotation assembly contacts is designed to 45 degree of groove,
This ensure that jackscrew bar can withstand the shell of rotation assembly with maximum intensity, there is screw thread in jackscrew bar front and is revolved by screw thread
Tightly on shell, jackscrew bar is threaded into and is screwed out by this；The sealing ring seat of honour is in the inner hole of shell, combined seal ring dress
On the sealing ring seat of honour, for seat on combined seal ring, sealing ring pressure cap withstands seat under sealing ring, sealing ring pressure cap under sealing ring
It is tightened on shell by screw thread, jackscrew bar is formed by combined seal ring and shell and sealed.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, rotation assembly is filled by gluing core apparatus, bearing
It sets, lower glue core composition；It glues core apparatus and lower glue core overall structure rotation assembly is connected by bearing arrangement；Rotation assembly is equipped with
Two groups of cooling passages and one group of grease channel；Two groups of cooling passages lead to the top seal of bearing arrangement, one-in-and-one-out
For infusing coolant liquid, the top of coolant liquid injection bearing device simultaneously comes out from the top of bearing arrangement, reinjects after supercooling
The top of bearing arrangement, continuous reciprocation cycle carry out the top oil sealing of cooling bearing device；Grease channel leads to bearing arrangement
Lower part, lubricating oil is injected into keeping certain pressure behind bearing arrangement lower part, the medium in one side equalizer bearing device outer well
Pressure, another aspect lubrication oil seal and bearing.
The gluing core apparatus includes actuating sleeve, nut, gluing core, gluing core cup, hexagon socket head cap screw, connection bolt；
There are four inclined slots to install kelly bar driver at the top of actuating sleeve；Core is glued by nut check in actuating sleeve bottom；Driving
For set by twice O-ring and gluing core cupuliform at sealing, actuating sleeve passes through 16 high-intensitive hexagon socket head cap screws and gluing core cup
Form close connection；When the rotation of kelly bar driver drives actuating sleeve, actuating sleeve just drives gluing core cup, gluing core to revolve together
Turn.
The bearing arrangement is by upper sealing body device, two groups of SL184948 roller bearings, two groups of SLI81248 thrust axis
It holds, shell, mandrel, lower seal device composition；Two groups of SL184948 roller bearings, two groups of SLI81248 thrust bearings are mounted in outer
In the annular space of shell-and-core axis, sealing body device is withstood above four groups of bearings, withstands lower seal device below, two groups
SL184948 roller bearing bears radial load, and two groups of SLI81248 thrust bearings bear axial load.
The upper sealing body device includes No.1 baffle, upper connector, upper press cover, lip shape oil sealing, spacer ring, oil sealing pressure
Plate, dormant bolt, dynamic sealing body, rotary oil seal and upper seal support；Upper connector right-handed thread screws on mandrel, by No.1 baffle
It blocks connector and is fixed on mandrel by hexagon socket head cap screw, prevent connector from disengaging from mandrel；Upper press cover is sitting in
On shell, upper press cover is connected together by hexagon socket head cap screw and shell, is sealed up by O-ring close between upper connector and shell
Cover；In upper press cover, centre is separated two No.1 lip shape oil sealings with spacer ring, and No.1 oil sealing pressing plate passes through dormant bolt for one
Number lip shape oil sealing is pressed in upper press cover, and upper press cover is formed by No.1 lip shape oil sealing and upper connector and sealed；Dynamic sealing body dress
On mandrel, is formed and sealed by O-ring and mandrel；Upper seal support is mounted under dynamic sealing body, has groove on upper seal support inner hole,
Groove is provided with No.1 rotary oil seal, and two No. two lip shape oil sealings are in upper seal support, and centre is separated with spacer ring, No. two oil sealings
Pressing plate is connect by dormant bolt with upper seal support, and No. two lip shape oil sealings are pressed in upper seal support, and upper seal support passes through O
Sealing surface between type circle and shell forms sealing；When mandrel drives upper connector and dynamic sealing body rotates, upper connector and
Dynamic sealing body and lip type oil sealing and rotary oil seal form dynamic sealing.
The lower seal device includes bottom sealing socket, hexagon socket head cap screw, No. three oil sealing pressing plates, dormant bolt, No. three
Lip shape oil sealing, spacer ring, No. two rotary oil seals, guidance tape, lower glue core seat, sheath and No. two baffles；Bottom sealing socket is mounted in shell bottom
Portion is connected together by hexagon socket head cap screw and shell, and the sealing surface between bottom sealing socket and shell is sealed up by O-ring；No. two
On the inner hole step of bottom sealing socket, two No. three lip shape oil sealings are back-to-back to be mounted in above No. two rotary oil seals rotary oil seal,
No. three lip shape oil sealings are placed back to back while sealing the pressure of medium both direction in the lubricating oil in bearing arrangement and well, and No. three
It being separated between lip shape oil sealing and No. two rotary oil seals with spacer ring, No. three oil sealing pressing plates are connect by dormant bolt with bottom sealing socket,
And No. three lip shape oil sealings are pressed in bottom sealing socket；Lower glue core seat left hand thread screws on mandrel, passes through O-ring and mandrel shape
At sealing, lower glue core seat is blocked by No. two baffles and is fixed on mandrel by hexagon socket head cap screw, prevents lower glue core seat from mandrel
Upper disengagement；There is groove on bottom sealing socket inner hole, groove is provided with guidance tape；When mandrel drives the rotation of lower glue core seat, lower glue core
Seat forms dynamic sealing with No. three lip type oil sealings and No. two rotary oil seals.
The installation and operation of the closed rotating blowout preventer of under balance pressure drilling environmental protection: the flange in the bottom of shell passes through ring gasket
It is connected on the annular preventer or ram preventer of oil drilling well head, the bottom that top is connected to derrick by increasing pipe nipple
Portion realizes being fully sealed for wellhead equipment, and rotation assembly is mounted on shell by sealing ring, and 12 jackscrews are by rotation assembly
Firmly it is installed on shell；When drilling tool rotary drilling, drilling tool drives drive assembly, mandrel in rotation assembly to turn together
It is dynamic, shell, rotation assembly shell when drilling tool rotates, then do not turn with oil drilling wellhead assembly fixed static.
The invention has the following advantages that
1, using Monobloc structure, old-fashioned hydraulic cylinder structure is eliminated, realizes being fully sealed for wellhead equipment, it will
The mud that drilling rod is taken out of out of well is sealed in the inside of rotating blowout preventer, falls so as to avoid mud in well head, effective to protect
Protected the environment around well head, while being normally carried out drillng operation to preserve the ecological environment play the role of it is great.
2, specified static pressure 35MPa, specified dynamic pressure 17.5MPa, shell maximum diameter have reached 430mm, rotation assembly latus rectum
197mm is suitable for five and half and the use of following drilling rod；
3, the driving structure of rotation assembly is simple, firm and reliable connection, effectively prevents drilling rod and drives rotation assembly reversion
The problems such as caused thread looseness, seal failure；
4, discovery and effective protection oil-gas Layer, are conducive to during drilling well, effective protection environment simultaneously can save reservoir
Improvement expenses；
5, drilling speed is improved, bit life is improved；
6, prevent or reduce the undergrounds such as leakage, differential sticking complexity；
7, shorten exploration cycle, improve exploration efficiency；
8, it can be avoided the generation of gas blowout accident；
9, two groups of SL184948 roller bearings bear radial load, and two groups of SLI81248 thrust bearings bear axial load,
The two-way carrying of bearing makes the bearing capacity of rotation assembly obtain great reinforcement, while ability of righting is improved, and more has
The protection sealing element of effect；
10, the coefficient of friction of rotary oil seal only has the one third of lip type oil sealing, reduces dynamic sealing using rotary oil seal
Frictional force between body and rotary oil seal reduces the sealing surface wear between dynamic sealing body and rotary oil seal, improves product
Service life；
11, guiding takes up the effect of guiding, has and absorbs vibration performance, and has fabulous wear-resisting property and good do to move
Row characteristic；
12, when in use, bottom is mounted on annular blowout prevention to the closed rotating blowout preventer of under balance pressure drilling of the invention environmental protection
Device or ram preventer top, the bottom that top is connected to derrick by increasing pipe nipple, realize being fully sealed for wellhead equipment,
Avoid mud falls pollution environment；It is effective to the drilling tool of rotation in implementation under balance pressure drilling technique drillng operation with pressure
Sealing, and shunting function can be played；The closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention and hydraulic blow out preventer, drilling tool
Check-valves, the coordinative composition of equipments such as liquid-gas separator and non-snubbing service pressurizing device are in use, drilling with pressure can be carried out safely
With non-snubbing service operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention
Fig. 2 is the assembly structure diagram of Fig. 1
Fig. 3 is the right view of Fig. 2
Fig. 4 is the top view of Fig. 2
Fig. 5 is the A-A cross-sectional view of Fig. 4
Fig. 6 is the sealing ring schematic diagram of Fig. 1
Fig. 7 is the body diagram of Fig. 1
Fig. 8 is the right view of Fig. 7
Fig. 9 is the top view of Fig. 7
Figure 10 is the A-A cross-sectional view of Fig. 9
Figure 11 is the lubricating oil inlet device of Figure 10
Figure 12 is the jackscrew device of Figure 10
Figure 13 is the rotation assembly schematic diagram of Fig. 1
Figure 14 is the right view of Figure 13
Figure 15 is the gluing core apparatus of Figure 14
Figure 16 is the bearing arrangement of Figure 14
Figure 17 is the upper sealing body device of Figure 16
Figure 18 is the lower seal device of Figure 16
In figure: 1. rotation assembly, 2. shells, 3. sealing rings, 4. enclosure bodies, 5. cooling liquid inlet devices, 6.
Cooling liquid outlet device, 7. large flange pipe nipples, 8. small flange spools, 9. lubricating oil inlet devices, 10. jackscrew devices, 11.
Bolt, 12. steel gasket rings, 13. sealing bars, 14. O-rings, the 15. filler seats of honour, 16. airtight and watertight paddings, seat under 17. fillers,
18. gland, 19. jackscrew bars, the 20. sealing ring seats of honour, 21. combined seal rings, seat under 22. sealing rings, 23. sealings
Circle pressure cap, 24. gluing core apparatus, 25. bearing arrangements, 26. lower glue cores, 27. actuating sleeves, 28. hexagon socket head cap screws, 29.
Nut, 30. gluing cores, 31. gluing core cups, 32. connect bolts, seal body device, 34. SL184948 Roller Shafts on 33.
It holds, 35. SLI81248 thrust bearings, 36. shells, 37. mandrels, 38. lower seal devices, 39. No.1 baffles, 40.
Upper connector, 41. No.1 lip shape oil sealings, 42. spacer rings, 43. upper press covers, 44. dynamic sealing bodies, 45. No.1 rotary oil seals,
46. No.1 oil sealing pressing plate, 47. dormant bolts, 48. upper seal supports, 49. bottom sealing sockets, 50. sheaths, 51. lower glue cores
Seat, 52. guidance tapes, 53. No. two baffles, 54. No. two lip shape oil sealings, 55. No. two lip shape oil sealings, 56. No. two rotary oil seals,
57. No. two oil sealing pressing plates, 58. No. three oil sealing pressing plates.
Specific embodiment
As shown in Fig. 1 to Fig. 6, the closed rotating blowout preventer of under balance pressure drilling environmental protection is by 2 two parts of rotation assembly 1 and shell
Composition；Rotation assembly 1 is mounted on shell 2 by sealing ring 3；150 degree of interval is recessed there are two in the enclosure body 4 of shell 2
Slot, it is same there are two the boss at 150 degree of interval on the shell 36 of rotation assembly 1, shell 2 and rotation assembly 1 are ensured that in this way
Between setting angle uniqueness；By the withdrawal of jackscrew device 10, rotation assembly 1 is mounted on shell 2 into enclosure body 4
On, by the elongation of jackscrew device 10, rotation assembly 1 is firmly installed on shell 2；Sealing ring 3 seals up rotation assembly 1
Sealing surface between shell 2, this completes the installations of the closed rotating blowout preventer of under balance pressure drilling environmental protection.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, sealing ring is as shown in fig. 6,3 inner circle of sealing ring
Face is bonded with rotation assembly 1, and periphery is designed to arc surface, is easier to form sealing into shell 2 and therewith in this way, entire close
Seal 3 is closely embedded in the fixing groove of rotation assembly 1.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, shell as shown in Fig. 7 to Figure 10, shell 2
There are two the grooves for being spaced 150 degree on 4 inner hole of enclosure body, for being bumped into rotation assembly 1；The upper flange of enclosure body 4 is installed
There are 5, one, cooling liquid inlet device, 6, one, cooling liquid outlet device, 9,12 jackscrew devices of lubricating oil inlet device
10；Two planes have been milled on 4 middle part periphery of enclosure body, have been connected to large flange pipe nipple 7 with bolt 11, steel gasket ring 12 respectively
With small flange spool 8, large flange pipe nipple 7 connects liquid-operated flat valve, and small flange spool 8 connects pressure sensor.
As shown in figure 11, the lubricating oil inlet device 9 is filled out by sealing bar 13, O-ring 14, the filler seat of honour 15, sealing
Seat 17 under material 16, filler, gland 18 form；13 top design of sealing bar is at 60 degree of angle cones, sealing more convenient in this way
Bar 13 enters in the grease channel of rotation assembly 1, and sealing bar 13 is formed by O-ring 14 and rotation assembly 1 and sealed, sealing bar
There is screw thread at 13 middle parts and is tightened in enclosure body 4 by screw thread, and sealing bar 13 is threaded into and screws out rotation assembly by this
1,13 tail portion of sealing bar is equipped with threaded hole, for connecting lubricating oil pipe line；The filler seat of honour 15 is mounted on the inner hole of enclosure body 4
In, airtight and watertight padding 16 is mounted on the filler seat of honour 15, and seat 17 is mounted in airtight and watertight padding 16 under filler, and gland 18, which is withstood, to be filled out
Expect that lower seat 17, gland 18 are tightened on shell 2 by screw thread, sealing bar 13 passes through airtight and watertight padding 16 and 4 shape of enclosure body
At sealing；Cooling liquid outlet device 5 and cooling liquid inlet device 6 are identical as the structure of lubricating oil inlet device 9.
As shown in figure 12, the jackscrew device 10 is by jackscrew bar 19, the sealing ring seat of honour 20, combined seal ring 21, sealing
Enclose lower seat 22, sealing ring pressure cap 23 forms；19 top design of jackscrew bar at 45 degree of angles cone, the shell 36 of rotation assembly 1 with
The part of contact be designed to 45 degree of groove, this ensure that jackscrew bar 19 can withstand rotation assembly 1 with maximum intensity
There are screw thread in shell 36,19 front of jackscrew bar and are tightened in enclosure body 4 by screw thread, jackscrew bar 19 by this be threaded into and
It screws out；The sealing ring seat of honour 20 is mounted in the inner hole of enclosure body 4, and combined seal ring 21 is mounted on the sealing ring seat of honour 21, close
Seat 22 is mounted on combined seal ring 21 under seal, and sealing ring pressure cap 23 withstands seat 22 under sealing ring, and sealing ring pressure cap 23 passes through
Screw thread is tightened in enclosure body 4, and jackscrew bar 19 is formed by combined seal ring 21 and enclosure body 4 and sealed.
In the closed rotating blowout preventer of under balance pressure drilling environmental protection of the invention, rotation assembly is as shown in Figure 13 and Figure 14, rotation
Turn assembly 1 to be made of gluing core apparatus 24, bearing arrangement 25, lower glue core 26；Gluing core apparatus 24 is connected by bearing arrangement 25
Lower glue core 26 is integrally formed rotation assembly 1；Rotation assembly 1 is equipped with two groups of cooling passages, one group of grease channel；Two groups cold
But liquid channel leads to the top seal of bearing arrangement 25, and one-in-and-one-out is used to infuse coolant liquid, coolant liquid injection bearing device 25
Top simultaneously comes out from the top of bearing arrangement 25, and the top of bearing arrangement 25 is reinjected after supercooling, and continuous reciprocation cycle is come
The top oil sealing of cooling bearing device 25；Grease channel leads to the lower part of bearing arrangement 25, and lubricating oil is injected into bearing arrangements
Keep certain pressure behind 25 lower parts, the pressure medium in one side equalizer bearing device outer well, another aspect lubrication oil seal and
Bearing.
As shown in figure 15, the gluing core apparatus 24 include actuating sleeve 27, nut 29, gluing core 30, gluing core cup 31,
Hexagon socket head cap screw 28, connection bolt 32；There are four inclined slots to install kelly bar driver at actuating sleeve 27 top；It is logical to glue core 30
It crosses nut 29 and is locked at 27 bottom of actuating sleeve；Actuating sleeve 27 is formed and is sealed by twice O-ring and gluing core cup 31, actuating sleeve 27
Close connection is formed by 16 high-strength hexagon socket-head bolts 28 and gluing core cup 31；When kelly bar driver drives actuating sleeve 27
When rotation, actuating sleeve 27 just drives gluing core cup 31, gluing core 30 to rotate together.
As shown in figure 16, the bearing arrangement 25 is by 33, two groups of SL184948 roller bearings 34, two of upper sealing body device
Group SLI81248 thrust bearing 35, shell 36, mandrel 37, lower seal device 38 form；Two groups of SL184948 roller bearings 34,
Two groups of SLI81248 thrust bearings 35 are mounted in the annular space of shell 36 and mandrel 37, and seal dress is withstood above four groups of bearings
33 are set, withstands lower seal device 38 below, two groups of SL184948 roller bearings 34 bear radial load, and two groups of SLI81248 are pushed away
Power bearing 35 bears axial load.
As shown in figure 17, the upper sealing body device 33 includes No.1 baffle 39, upper connector 40, upper press cover 43, lip
Shape oil sealing, oil sealing pressing plate, dynamic sealing body 44, No.1 rotary oil seal 45 and upper seal support 48；Upper 40 right-handed thread of connector screws in
On mandrel 37, No.1 baffle 39 is fixed on mandrel 37 by hexagon socket head cap screw and blocks upper connector 40, prevents connector 40
It is disengaged from mandrel 37；Upper press cover 43 is sitting on shell 36 and is connected together by hexagon socket head cap screw and shell, is sealed up by O-ring
Sealing surface between upper connector 40 and shell 36；Two No.1 lip shape oil sealings 41 that centre spacer ring 42 separates are mounted on pressure
In lid 43, No.1 lip shape oil sealing 41 is pressed in upper press cover 43 by No.1 oil sealing pressing plate 46 by dormant bolt 47, upper press cover 43
It is formed and is sealed by No.1 lip shape oil sealing 41 and upper connector 40；Dynamic sealing body 44 is mounted on mandrel 37, passes through O-ring and core
Axis 37 forms sealing；Upper seal support 48 is mounted under dynamic sealing body 44, has groove on 48 inner hole of upper seal support, groove is provided with one
Number rotary oil seal 45, intermediate two No. two lip shape oil sealings 54 separated with spacer ring are in upper seal support 48, No. two oil sealing pressing plates
57 are connect with upper seal support 48 and No. two lip shape oil sealings 54 are pressed in upper seal support 48, upper seal support 48 by dormant bolt
Sealing is formed by the sealing surface between O-ring and shell 36；When mandrel 37 drives upper connector 40 and dynamic sealing body 44 to rotate
When, upper connector 40 and dynamic sealing body 44 and lip type oil sealing and rotary oil seal form dynamic sealing.
As shown in figure 18, the lower seal device 38 includes the oil sealing pressing plate 58, three of bottom sealing socket 49, three lip shape
55, No. two rotary oil seals 56 of oil sealing, guidance tape 52, lower glue core seat 51, sheath 50 and No. two baffles 53；Bottom sealing socket 49 is mounted on
36 bottom of shell, is connected together by hexagon socket head cap screw and shell 36, is sealed up between bottom sealing socket 49 and shell 36 by O-ring
Sealing surface；No. two rotary oil seals 56 are mounted on the inner hole step of bottom sealing socket 49, and two No. three lip shape oil sealings 55 are back-to-back
Above No. two rotary oil seals 56, No. three lip shape oil sealings 55 are placed back to back while sealing the lubricating oil in bearing arrangement and well
The pressure of interior medium both direction is separated between No. three lip shape oil sealings 55 and No. two rotary oil seals 56 with spacer ring, No. three oil sealing pressures
Plate 58 is connect by dormant bolt with bottom sealing socket 49, and No. three lip shape oil sealings 55 are pressed in bottom sealing socket 49；Lower glue core
51 left hand threads of seat screw on mandrel 37, are formed and are sealed by O-ring and mandrel 37, No. two baffles 53 are solid by hexagon socket head cap screw
It is scheduled on mandrel 37 and blocks lower glue core seat 51, prevent lower glue core seat 51 from disengaging from mandrel 37；There is ditch on 49 inner hole of bottom sealing socket
Slot, groove are provided with guidance tape 52；When mandrel 37 drives lower glue core seat 51 to rotate, lower glue core seat 51 and No. three lip type oil sealings 55
Dynamic sealing is formed with No. two rotary oil seals 56.
The installation and operation of the closed rotating blowout preventer of under balance pressure drilling environmental protection: the flange in the bottom of shell passes through ring gasket
It is connected on the annular preventer or ram preventer of oil drilling well head, the bottom that top is connected to derrick by increasing pipe nipple
Portion realizes being fully sealed for wellhead equipment, and rotation assembly is mounted on shell by sealing ring, and 12 jackscrews will rotate total
At being firmly installed on shell；When drilling tool rotary drilling, drive assembly, mandrel in drilling tool drive rotation assembly are together
Rotation, shell, rotation assembly shell drilling tool rotate when, then do not turn with oil drilling wellhead assembly fixed static.
Claims (7)
1. the closed rotating blowout preventer of under balance pressure drilling environmental protection, the rotating blowout preventer is by rotation assembly (1) and shell (2) two parts
Composition, rotation assembly (1) are mounted on shell (2) by sealing ring (3)；There are two intervals in the enclosure body (4) of shell (2)
150 degree of groove, it is same there are two the boss at 150 degree of interval on the shell (36) of rotation assembly (1), shell is ensured that in this way
(2) between rotation assembly (1) setting angle uniqueness；By the withdrawal of jackscrew device (10), rotation assembly (1) enters shell
Body ontology (4) is mounted on shell (2), and by the elongation of jackscrew device (10), rotation assembly (1) is firmly installed on shell
(2) on；Sealing ring (3) seals up the sealing surface between rotation assembly (1) and shell (2), and this completes under balance pressure drillings
The installation of the closed rotating blowout preventer of environmental protection；It is characterized by: sealing ring (3) inner headed face is bonded with rotation assembly (1), sealing ring
(3) periphery is designed to arc surface, and such sealing ring (3) is easier to form sealing, entire sealing ring into shell (2) and therewith
(3) it is closely embedded in the fixing groove of rotation assembly (1)；There are two intervals 150 on enclosure body (4) inner hole of shell (2)
The groove of degree, for being bumped into rotation assembly (1)；The upper flange of enclosure body (4) installs cooling liquid inlet device (5), one
A cooling liquid outlet device (6), a lubricating oil inlet device (9) and 12 jackscrew devices (10)；In the middle part of enclosure body (4)
Two planes have been milled on periphery, are connected to large flange pipe nipple (7) with bolt (11), steel gasket ring (12) respectively and small flange is short
It saves (8), large flange pipe nipple (7) connects liquid-operated flat valve, and small flange spool (8) connects pressure sensor；Rotation assembly (1) is by upper
Glue core apparatus (24), bearing arrangement (25), lower glue core (26) composition；Core apparatus (24) are glued to pass through under bearing arrangement (25) connection
Glue core (26) is integrally formed rotation assembly (1)；Rotation assembly (1) is equipped with two groups of cooling passages and one group of grease channel；
Two groups of cooling passages lead to the top seal of bearing arrangement (25), and one-in-and-one-out is for infusing coolant liquid, coolant liquid injection bearing
The top of device (25) simultaneously comes out from the top of bearing arrangement (25), and the top of bearing arrangement (25) is reinjected after supercooling,
Continuous reciprocation cycle carrys out the top oil sealing of cooling bearing device (25)；Grease channel leads to the lower part of bearing arrangement (25), will
Certain pressure, the medium pressure in one side equalizer bearing device outer well are kept behind lubricating oil injection bearing device (25) lower part
Power, another aspect lubrication oil seal and bearing.
2. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 1, it is characterised in that: lubricating oil inlet
Device (9) is by seat (17) under sealing bar (13), O-ring (14), the filler seat of honour (15), airtight and watertight padding (16), filler, gland
(18) it forms；Sealing bar (13) top design enters rotation assembly (1) at 60 degree of angle cones, more convenient in this way sealing bar (13)
Grease channel in, sealing bar (13) is formed by O-ring (14) and rotation assembly (1) and is sealed, and is had in the middle part of sealing bar (13)
Screw thread is simultaneously tightened on enclosure body (4) by screw thread, and sealing bar (13) is threaded into and screws out rotation assembly (1) by this,
Sealing bar (13) tail portion is equipped with threaded hole, for connecting lubricating oil pipe line；The filler seat of honour (15) is mounted on the interior of enclosure body (4)
Kong Zhong, airtight and watertight padding (16) are mounted on the filler seat of honour (15), and seat (17) is mounted on airtight and watertight padding (16) under filler, filler pressure
Lid (18) is withstood seat under filler (17), and gland (18) is tightened on shell (2) by screw thread, and sealing bar (13) passes through sealing
Filler (16) and enclosure body (4), which are formed, to be sealed；Cooling liquid outlet device (5) and cooling liquid inlet device (6) and lubricating oil into
Mouth device (9) structure is identical.
3. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 1, it is characterised in that: jackscrew device
(10) by seat (22), sealing ring pressure cap (23) under jackscrew bar (19), the sealing ring seat of honour (20), combined seal ring (21), sealing ring
Composition；Jackscrew bar (19) top design at 45 degree of angle cones, design by the part that the shell (36) of rotation assembly (1) contacts
At 45 degree of groove, this ensure that jackscrew bar (19) can withstand the shell (36) of rotation assembly (1), jackscrew with maximum intensity
There is screw thread in bar (19) front and is tightened on enclosure body (4) by screw thread, and jackscrew bar (19) is threaded into and is screwed out by this；
The sealing ring seat of honour (20) is mounted in the inner hole of enclosure body (4), and combined seal ring (21) is mounted on the sealing ring seat of honour (20),
Seat (22) is mounted on combined seal ring (21) under sealing ring, and sealing ring pressure cap (23) withstands seat under sealing ring (22), sealing ring
Pressure cap (23) is tightened on enclosure body (4) by screw thread, and jackscrew bar (19) passes through combined seal ring (21) and enclosure body (4)
Form sealing.
4. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 1, it is characterised in that: gluing core apparatus
It (24) include actuating sleeve (27), nut (29), gluing core (30), gluing core cup (31), hexagon socket head cap screw (28), connection bolt
(32)；There are four inclined slots to install kelly bar driver at the top of actuating sleeve (27)；Core (30) are glued to lock by nut (29)
In actuating sleeve (27) bottom；Actuating sleeve (27) is formed by twice O-ring and gluing core cup (31) and is sealed, and actuating sleeve (27) passes through
16 high-strength hexagon socket-head bolts (28) form with gluing core cup (31) and closely connect；When kelly bar driver drives actuating sleeve
(27) when rotating, actuating sleeve (27) just drives gluing core cup (31), gluing core (30) to rotate together.
5. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 1, it is characterised in that: bearing arrangement
(25) by upper sealing body device (33), two groups of SL184948 roller bearings (34), two groups of SLI81248 thrust bearings (35), shells
(36), mandrel (37), lower seal device (38) composition；Two groups of SL184948 roller bearings (34), two groups of SLI81248 thrusts
Bearing (35) is mounted in the annular space of shell (36) and mandrel (37), and sealing body device (33) is withstood above four groups of bearings, under
Face is withstood lower seal device (38), and two groups of SL184948 roller bearings (34) bear radial load, two groups of SLI81248 thrusts
Bearing (35) bears axial load.
6. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 5, it is characterised in that: described is upper close
Sealing body device (33) includes No.1 baffle (39), upper connector (40), upper press cover (43), lip shape oil sealing, oil sealing pressing plate, dynamic sealing
Body (44), No.1 rotary oil seal (45) and upper seal support (48)；Upper connector (40) right-handed thread screws on mandrel (37), No.1
Baffle (39) is fixed on mandrel (37) by hexagon socket head cap screw and blocks upper connector (40), prevents connector (40) from mandrel
(37) it is disengaged on；Upper press cover (43) is sitting on shell (36) and is connected together by hexagon socket head cap screw and shell, is sealed up by O-ring
Sealing surface between upper connector (40) and shell (36)；The intermediate two No.1 lip shape oil sealings (41) separated with spacer ring (42) are pacified
In upper press cover (43), No.1 lip shape oil sealing (41) is pressed on upper pressure by dormant bolt (47) by No.1 oil sealing pressing plate (46)
It covers in (43), upper press cover (43) is formed by No.1 lip shape oil sealing (41) and upper connector (40) and sealed；Dynamic sealing body (44) peace
On mandrel (37), is formed and sealed by O-ring and mandrel (37)；Upper seal support (48) is mounted under dynamic sealing body (44),
There is groove on upper seal support (48) inner hole, groove is provided with No.1 rotary oil seal (45), intermediate two No. two separated with spacer ring
In upper seal support (48), No. two oil sealing pressing plates (57) are connect by dormant bolt with upper seal support (48) lip shape oil sealing (54)
And No. two lip shape oil sealings (54) are pressed in upper seal support (48), upper seal support (48) passes through between O-ring and shell (36)
Sealing surface formed sealing；When connector (40) in mandrel (37) drive and dynamic sealing body (44) rotate, upper connector (40)
Dynamic sealing is formed with dynamic sealing body (44) and lip type oil sealing and rotary oil seal.
7. the closed rotating blowout preventer of under balance pressure drilling environmental protection according to claim 5, it is characterised in that: close under described
Sealing body device (38) includes bottom sealing socket (49), No. three oil sealing pressing plates (58), No. three lip shape oil sealings (55), No. two rotary oil seals
(56), guidance tape (52), lower glue core seat (51), sheath (50) and No. two baffles (53)；Bottom sealing socket (49) is mounted on shell
(36) bottom is connected together by hexagon socket head cap screw and shell (36), seals up bottom sealing socket (49) and shell (36) by O-ring
Between sealing surface；No. two rotary oil seals (56) are mounted on the inner hole step of bottom sealing socket (49), two No. three lip shape oil sealings
(55) back-to-back to be mounted in above No. two rotary oil seals (56), No. three lip shape oil sealings (55) are placed back to back while sealing bearing arrangement
The pressure of medium both direction in interior lubricating oil and well, between No. three lip shape oil sealings (55) and No. two rotary oil seals (56) with every
Circle separates, and No. three oil sealing pressing plates (58) are connect by dormant bolt with bottom sealing socket (49), and No. three lip shape oil sealings (55) are pressed
Tightly in bottom sealing socket (49)；Lower glue core seat (51) left hand thread screws on mandrel (37), is formed by O-ring and mandrel (37)
Sealing, No. two baffles (53) are fixed on mandrel (37) by hexagon socket head cap screw blocks lower glue core seat (51), prevents lower glue core seat
(51) it is disengaged from mandrel (37)；There is groove on bottom sealing socket (49) inner hole, groove is provided with guidance tape (52)；When mandrel (37)
When driving lower glue core seat (51) rotation, lower glue core seat (51) and No. three lip type oil sealings (55) and No. two rotary oil seals (56) form dynamic
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072389.4A CN106639961B (en) | 2017-02-10 | 2017-02-10 | The closed rotating blowout preventer of under balance pressure drilling environmental protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072389.4A CN106639961B (en) | 2017-02-10 | 2017-02-10 | The closed rotating blowout preventer of under balance pressure drilling environmental protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106639961A CN106639961A (en) | 2017-05-10 |
| CN106639961B true CN106639961B (en) | 2019-05-21 |
Family
ID=58844866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710072389.4A Active CN106639961B (en) | 2017-02-10 | 2017-02-10 | The closed rotating blowout preventer of under balance pressure drilling environmental protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639961B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190162041A1 (en) * | 2017-11-28 | 2019-05-30 | Weatherford Technology Holdings, Llc | Pressure control device with composite annular seal assembly |
| CN109577903B (en) * | 2018-12-27 | 2024-04-09 | 中国石油天然气集团有限公司 | Rotary assembly of rotary blowout preventer easy to disassemble and assemble |
| CN111021981B (en) * | 2019-11-22 | 2022-03-04 | 中国石油天然气集团有限公司 | Positive and negative circulation internal blowout preventer and positive and negative circulation internal blowout prevention method |
| CN112065316A (en) * | 2020-09-25 | 2020-12-11 | 中国石油集团渤海钻探工程有限公司 | Special wellhead sealing device for gas drilling |
| CN112253035A (en) * | 2020-10-09 | 2021-01-22 | 盐城市荣嘉机械制造有限公司 | Well drilling blowout prevention structure and device thereof |
| CN114635663B (en) * | 2021-10-26 | 2023-08-15 | 中国石油天然气集团有限公司 | Closed-loop control method of rotary blowout preventer |
| CN117948077B (en) * | 2024-03-27 | 2024-06-14 | 山西泰宝科技有限公司 | Rotary assembly sealing device of rotary blowout preventer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662181A (en) * | 1992-09-30 | 1997-09-02 | Williams; John R. | Rotating blowout preventer |
| CN2405005Y (en) * | 1999-11-24 | 2000-11-08 | 四川石油管理局 | Ratary blow-out preventer for drilling |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN103939046A (en) * | 2013-01-22 | 2014-07-23 | 中国石油天然气集团公司 | Low-pressure light rotating control head without external cooling lubrication pump station |
-
2017
- 2017-02-10 CN CN201710072389.4A patent/CN106639961B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662181A (en) * | 1992-09-30 | 1997-09-02 | Williams; John R. | Rotating blowout preventer |
| CN2405005Y (en) * | 1999-11-24 | 2000-11-08 | 四川石油管理局 | Ratary blow-out preventer for drilling |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN103939046A (en) * | 2013-01-22 | 2014-07-23 | 中国石油天然气集团公司 | Low-pressure light rotating control head without external cooling lubrication pump station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106639961A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106639961B (en) | The closed rotating blowout preventer of under balance pressure drilling environmental protection | |
| CN103459764B (en) | Preventer | |
| US9284811B2 (en) | Universal rotating flow head having a modular lubricated bearing pack | |
| US4448255A (en) | Rotary blowout preventer | |
| CN203770201U (en) | Mechanical sealing device capable of bearing high pressure | |
| US20010050168A1 (en) | Pump drive head with stuffing box | |
| CN101182760B (en) | Under balance drilling revolution control device | |
| CN203784244U (en) | Top driving device sealing structure | |
| CN109751402B (en) | Vehicle-mounted coalbed methane drill power head reduction gearbox | |
| CN103573206B (en) | Rotary assembly of active sealing type rotary blowout preventer | |
| CN202249752U (en) | Seal transmission shaft | |
| CN202012301U (en) | Drill rod lifting and extracting device for rotary drilling rig | |
| CN108716362B (en) | Hydraulic bearing screw drilling tool | |
| CN1081283C (en) | Drilling rotary blowout preventer | |
| CA2801788A1 (en) | Rotating flow control diverter | |
| CN201496025U (en) | Hydraulic rotary well plugging device | |
| CN202300195U (en) | Power head for axially feeding water and gas | |
| CN114704217A (en) | Annular hydraulic locking type rotary control head device | |
| CN209041555U (en) | A kind of permanent magnet direct-driven mechanical seal driving device | |
| US2207199A (en) | Blowout preventer | |
| CN208122809U (en) | A kind of rotating blowout preventer | |
| CN202441310U (en) | Hydraulic control well closing device | |
| CN2405005Y (en) | Ratary blow-out preventer for drilling | |
| US20080257555A1 (en) | Linear Drive Assembly with Rotary Union for Well Head Applications and Method Implemented Thereby | |
| CN208396674U (en) | Underground heat underbalance well high temperature resistant anti-splash device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |