CN113464083B - Blowout prevention device for oil field oil exploitation - Google Patents
Blowout prevention device for oil field oil exploitation Download PDFInfo
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- CN113464083B CN113464083B CN202111025030.4A CN202111025030A CN113464083B CN 113464083 B CN113464083 B CN 113464083B CN 202111025030 A CN202111025030 A CN 202111025030A CN 113464083 B CN113464083 B CN 113464083B
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- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims 2
- 239000003208 petroleum Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- 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
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Abstract
The invention relates to the technical field of oil exploitation, in particular to a blowout prevention device for oil exploitation in an oil field. The technical problem is as follows: the existing explosion-proof blowout device cannot realize that the well closing blowout prevention operation is completed instantly after the drill is retracted, and the sealing effect of the device is influenced by excessive control transmission parts communicated with the outside. The technical scheme is as follows: a blowout prevention device for oil field oil exploitation comprises a trigger assembly, a plug assembly, a power transmission assembly and the like; the upper connecting pipe and the lower connecting pipe are connected with a trigger assembly in a sliding mode. According to the technical scheme provided by the invention, the components for controlling the pipe plugging and the drill withdrawing are set to be in a linkage state, and the components for controlling the pipe plugging are arranged in the pipe, so that the completion of the well closing operation is realized while the drill withdrawing is completed, the aim of quickly closing the well is fulfilled without excessive operation of workers, and the effect of improving the channel sealing property is also improved.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a blowout prevention device for oil exploitation in an oil field.
Background
The well drilling industry is high-risk and high-investment high-tech comprehensive engineering, and well control work is the central importance in safety production. When the underground mining is carried out, the change of the readings of the instruments needs to be warned all the time, the overflow is found in time, and the well closing is quickly and correctly, so that the effective method for preventing the blowout is realized.
When oil field exploitation is carried out, the pressure of a stratum is raised by oil field water injection, post workers need to report to a control center in time after finding an overflow condition, the control center commands each station responsible person to carry out well closing operation after drilling, and a plurality of well blowout prevention working procedures are started in sequence to prevent the well blowout phenomenon from polluting the ground, a skilled operator can respond in a short time and complete a set of well closing flow, but the well closing blowout prevention operation cannot be instantly completed after the well closing operation is completed.
In addition, the existing explosion-proof blowout device needs external control to realize channel plugging work, if the number of control transmission parts communicated with the outside in the channel is too large, the sealing effect of the explosion-proof blowout device during working is influenced, and the leakage phenomenon occurs when the pressure in the channel is too large.
In summary, the present apparatus provides a device that can automatically complete the plugging and closing operations from the inside of the channel with fast response during the drill retracting operation to solve the above problems.
Disclosure of Invention
In order to overcome the shortcoming that the prior explosion-proof blowout device can not realize the instant completion of well closing and blowout prevention operation after the completion of a drill retracting operation and the excessive operation and control transmission parts communicated with the outside inside of a channel can influence the sealing effect of the explosion-proof blowout device during the working, the technical problem is as follows: provides a blowout prevention device for oil field oil exploitation.
The technical scheme is as follows: a blowout prevention device for oil exploitation in an oil field comprises a trigger assembly, a plug assembly, a power transmission assembly, a clamping assembly, an upper connecting pipe, an upper pipe sleeve, a lower pipe sleeve, a side pipe sleeve, a switching pipe sleeve, a lower connecting pipe and a middle annular frame; an upper pipe sleeve is connected below the upper connecting pipe; a lower pipe sleeve is connected below the upper pipe sleeve; the right side of the lower pipe sleeve is connected with a side pipe sleeve; a switching pipe sleeve is connected below the lower pipe sleeve; a lower connecting pipe is connected below the switching pipe sleeve; the lower part of the inner side of the upper pipe sleeve is connected with a middle annular frame; a trigger assembly is connected between the upper connecting pipe and the lower connecting pipe; a sealing plug component is connected above the switching pipe sleeve; the right side of the sealing plug component is connected with a side pipe sleeve; the upper part of the sealing plug component is connected with the middle annular frame; the middle part of the trigger component contacts the sealing plug component; the middle annular frame is connected with a power transmission assembly; the upper right part of the power transmission component is connected with an upper pipe sleeve; the lower part of the power transmission assembly is connected with a switching pipe sleeve; a locking assembly is connected below the power transmission assembly; the locking assembly is connected with the sealing plug assembly;
the plug assembly comprises a valve seat, a bearing seat, a lower spring, an inner support, an annular sliding plate, a side spring and a valve ball; a valve seat is connected below the middle annular frame; a bearing seat is arranged above the adapter sleeve; a lower spring is connected between the bearing seat and the adapter sleeve; the lower part of the trigger component contacts the inner surface of the bearing seat; the inner surface of the side pipe sleeve is connected with an inner bracket; the inner surface of the inner support is connected with an annular sliding plate; a side position spring is connected between the right side of the annular sliding plate and the inner support; a valve ball is inserted at the left side of the annular sliding plate; the left side of the valve ball contacts the trigger component, and the valve ball is fixed with the valve seat through the inner support after the trigger component is separated from the contact; the front side and the rear side of the bearing seat are respectively provided with a group of locking grooves, and the clamping and locking component is contacted with the groups of locking grooves on the front side and the rear side of the bearing seat.
Preferably, the trigger assembly comprises a fixed rod and a movable pin; a fixed rod is connected between the upper connecting pipe and the lower connecting pipe; the outer surface of the middle part of the fixed rod is connected with a movable pin; the outer surface of the moving pin contacts the closure assembly.
Preferably, the left side and the right side of the fixing rod are respectively provided with a convex strip structure.
Preferably, a plurality of groups of tooth grooves are formed in the right side of the moving pin at equal intervals from top to bottom.
Preferably, the power transmission assembly comprises a first rotating shaft, a first straight gear, a first worm, a second rotating shaft, a first worm wheel, a second straight gear, a sliding rotating ring, an outer toothed ring, an inner toothed ring, a third rotating shaft and a third straight gear; a first rotating shaft is connected to the upper right of the middle annular frame; the front side of the outer surface of the first rotating shaft is connected with a first straight gear; the rear side of the outer surface of the first rotating shaft is connected with a first worm; a second rotating shaft is connected to the lower right inside the upper pipe sleeve; a first worm wheel is connected above the outer surface of the second rotating shaft; the first worm is meshed with the first worm wheel; a second straight gear is connected below the outer surface of the second rotating shaft; a sliding rotating ring is connected above the side surface of the middle annular frame; the outer side of the sliding rotating ring is connected with an outer gear ring; the second spur gear is meshed with the outer gear ring; the inner side of the sliding rotating ring is connected with an inner gear ring; the front group and the rear group of the middle annular frame are respectively connected with a group of third rotating shafts; a switching pipe sleeve is connected below the third rotating shaft; a third straight gear is connected above the outer surface of the third rotating shaft; the third spur gear is meshed with the inner gear ring; the lower part of the outer surface of the third rotating shaft is connected with a latch assembly.
Preferably, the locking assembly comprises a first shaft sleeve, a double-groove fixing frame, a left lock pin, a right lock pin and a compression spring; a group of first shaft sleeves are connected below the outer surfaces of the front and rear groups of third rotating shafts respectively; the outer surface of the first shaft sleeve is connected with a double-groove fixing frame; the left side of the double-groove fixing frame is connected with a left lock pin; the right side of the double-groove fixing frame is connected with a right lock pin; compression springs are respectively connected between the double-groove fixing frame and the left lock pin and between the double-groove fixing frame and the right lock pin; the lower surfaces of the left lock pin and the right lock pin are both contacted with the lock groove of the bearing seat.
Preferably, tangent plane structures are arranged above the left lock pin and the right lock pin.
Preferably, the device also comprises an auxiliary ball shifting assembly, the left side of the middle annular frame is provided with the auxiliary ball shifting assembly, and the auxiliary ball shifting assembly comprises a left bushing, a left rotating wheel, a first bevel gear, a fourth rotating shaft, a second bevel gear, a second worm, a shaft seat, a fifth rotating shaft, a second worm gear, a second shaft sleeve, a torsion spring and a shifting lever; the left side of the upper pipe sleeve is connected with a left bushing; the rear side of the outer surface of the left bushing is connected with the middle annular frame; the inner surface of the left bushing is connected with a left rotating wheel; the rear side of the rotating shaft part of the left rotating wheel is connected with a first bevel gear; the left side of the middle annular frame is connected with a fourth rotating shaft; a switching pipe sleeve is connected below the fourth rotating shaft; a second bevel gear is connected above the outer surface of the fourth rotating shaft; the first bevel gear is meshed with the second bevel gear; a second worm is connected below the outer surface of the fourth rotating shaft; the left side of the inner part of the lower pipe sleeve is connected with a shaft seat; the right side of the shaft seat is connected with a fifth rotating shaft; the middle part of the outer surface of the fifth rotating shaft is connected with a second worm wheel; the second worm is meshed with the second worm wheel; the front side and the rear side of the outer surface of the fifth rotating shaft are respectively connected with a group of second shaft sleeves; a torsion spring is connected between the second shaft sleeve and the shaft seat; a deflector rod is connected below the second shaft sleeve.
Preferably, the right front and the right rear of the bearing seat are respectively provided with a slotted structure which is respectively aligned with the two groups of deflector rods.
Preferably, the locking device further comprises an auxiliary locking assembly, the auxiliary locking assembly is arranged on the right side of the middle annular frame, and the auxiliary locking assembly comprises a right bushing, a right rotating wheel, a third bevel gear, a sixth rotating shaft, a fourth bevel gear, a third shaft sleeve, a side bracket, a first wedge block, a spring slider, an arc-shaped clamping plate and a second wedge block; the right side of the upper pipe sleeve is connected with a right bushing; the rear side of the outer surface of the right bushing is connected with the middle annular frame; the inner surface of the right bushing is connected with a right rotating wheel; the rear side of the rotating shaft part of the right rotating wheel is connected with a third bevel gear; the right side of the middle annular frame is connected with a sixth rotating shaft; the upper side of the outer surface of the sixth rotating shaft is connected with a fourth bevel gear; the third bevel gear is meshed with the fourth bevel gear; a third shaft sleeve is connected to the lower side of the outer surface of the sixth rotating shaft; the rear side of the third shaft sleeve is connected with a side bracket; the right side of the side bracket is connected with a first wedge-shaped block; the inner surface of the side pipe sleeve is connected with two groups of spring sliding blocks which are respectively positioned at the front side and the rear side of the valve ball; an arc-shaped clamping plate is connected between the two groups of spring sliding blocks; a second wedge-shaped block is connected above the arc-shaped clamping plate; the first wedge block is tightly attached to the second wedge block.
The beneficial effects are that: according to the technical scheme provided by the invention, the technical problems that the existing explosion-proof blowout device cannot realize that the well closing blowout prevention operation is completed instantly after the drill is retracted, and the sealing effect of the explosion-proof blowout device during the operation is influenced due to too many operation transmission parts communicated with the outside in the channel are solved.
Firstly, components for collecting the drill and controlling pipeline plugging are set to be in a linkage state, so that the completion of the well closing operation is realized while the drill is collected, and the aim of quickly closing the well is guaranteed without excessive operation of workers;
and secondly, the component for controlling the pipeline plugging is arranged inside the pipeline, and the component for controlling the pipeline plugging is not required to be additionally arranged and communicated with the outside, so that the effect of improving the channel sealing property is realized.
Drawings
FIG. 1 is a front view of the present application;
FIG. 2 is a front sectional view of the present application;
FIG. 3 is a front view of the internal components of the present application;
FIG. 4 is a schematic illustration of a first perspective view of the power transfer assembly of the present application;
FIG. 5 is a schematic illustration of a second perspective view of the power transfer assembly of the present application;
FIG. 6 is a perspective view of a closure assembly of the present application;
FIG. 7 is a perspective view of an auxiliary ball kicking assembly according to the present application;
FIG. 8 is a perspective view of the latch assembly of the present application;
FIG. 9 is a partial perspective view of the latch assembly of the present application;
FIG. 10 is a perspective view of the secondary lock assembly of the present application;
fig. 11 is a perspective view of the socket of the present application.
Part names and serial numbers in the figure: 1-upper connection pipe, 2-upper pipe, 3-lower pipe, 4-side pipe, 5-adapter pipe, 6-lower connection pipe, 7-middle ring bracket, 101-fixed rod, 102-moving pin, 201-valve seat, 202-socket seat, 203-lower spring, 204-inner bracket, 205-annular slide plate, 206-side spring, 207-valve ball, 301-first rotating shaft, 302-first straight gear, 303-first worm, 304-second rotating shaft, 305-first worm gear, 306-second straight gear, 307-sliding rotating ring, 308-outer toothed ring, 309-inner toothed ring, 310-third rotating shaft, 311-third straight gear, 401-first shaft sleeve, 402-double-groove fixing bracket, 403-left locking pin, 404-right lock pin, 405-compression spring, 501-left bushing, 502-left rotating wheel, 503-first bevel gear, 504-fourth rotating shaft, 505-second bevel gear, 506-second worm, 507-shaft seat, 508-fifth rotating shaft, 509-second worm gear, 510-second shaft sleeve, 511-torsion spring, 512-deflector rod, 601-right bushing, 602-right rotating wheel, 603-third bevel gear, 604-sixth rotating shaft, 605-fourth bevel gear, 606-third shaft sleeve, 607-side bracket, 608-first wedge block, 609-spring sliding block, 610-arc clamping plate and 611-second wedge block.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
A blowout prevention device for oil field oil exploitation is shown in figures 1-3 and 7 and comprises a trigger assembly, a plug assembly, a power transmission assembly, a locking assembly, an upper connecting pipe 1, an upper pipe sleeve 2, a lower pipe sleeve 3, a side pipe sleeve 4, a switching pipe sleeve 5, a lower connecting pipe 6 and a middle annular frame 7; an upper pipe sleeve 2 is connected to the lower part of the upper connecting pipe 1 through a bolt; the lower part of the upper pipe sleeve 2 is connected with a lower pipe sleeve 3 through a bolt; a side pipe sleeve 4 is welded at the right side of the lower pipe sleeve 3; a switching pipe sleeve 5 is welded below the lower pipe sleeve 3; the lower part of the adapter sleeve 5 is connected with a lower connecting pipe 6 through a bolt; a middle annular frame 7 is welded below the inner side of the upper pipe sleeve 2; a trigger assembly is connected between the upper connecting pipe 1 and the lower connecting pipe 6 in a sliding manner; a sealing plug component is fixedly connected above the switching pipe sleeve 5; the right side of the sealing plug component is fixedly connected with a side pipe sleeve 4; the upper part of the sealing plug component is fixedly connected with a middle annular frame 7; the middle part of the trigger component contacts the sealing plug component; the middle annular frame 7 is connected with a power transmission component; the upper right part of the power transmission component is rotatably connected with the upper pipe sleeve 2; the lower part of the power transmission component is rotationally connected with a switching pipe sleeve 5; a locking component is fixedly connected below the power transmission component; the latch assembly contacts the bung assembly.
As shown in fig. 2-3 and 7, the trigger assembly includes a fixed bar 101 and a moving pin 102; a fixed rod 101 is connected between the upper connecting pipe 1 and the lower connecting pipe 6 in a sliding way; the outer surface of the middle part of the fixed rod 101 is connected with a movable pin 102 in a sliding way; the outer surface of the moving pin 102 contacts the closure assembly.
The left and right sides of the fixing rod 101 are respectively provided with a convex strip structure.
A plurality of groups of tooth grooves are formed in the right side of the moving pin 102 at equal intervals from top to bottom.
As shown in fig. 5, 6 and 11, the plug assembly includes a valve seat 201, a socket 202, a lower spring 203, an inner bracket 204, an annular slide plate 205, a side spring 206 and a valve ball 207; a valve seat 201 is fixedly connected below the middle annular frame 7; a bearing seat 202 is arranged above the adapter sleeve 5; a lower spring 203 is fixedly connected between the bearing seat 202 and the adapter sleeve 5; the lower portion of the moving pin 102 contacts the inner surface of the socket 202; an inner bracket 204 is fixedly connected with the inner surface of the side pipe sleeve 4; an annular sliding plate 205 is connected to the inner surface of the inner support 204 in a sliding manner; a side spring 206 is fixedly connected between the right side of the annular sliding plate 205 and the inner bracket 204; a valve ball 207 is inserted at the left side of the annular sliding plate 205; the left side of the valve ball 207 contacts the moving pin 102; the front and rear sides of the receptacle 202 are respectively provided with a set of locking grooves, and the latch assembly contacts the sets of locking grooves on the front and rear sides of the receptacle 202.
As shown in fig. 4 and 5, the power transmission assembly includes a first rotating shaft 301, a first spur gear 302, a first worm 303, a second rotating shaft 304, a first worm wheel 305, a second spur gear 306, a sliding swivel 307, an outer toothed ring 308, an inner toothed ring 309, a third rotating shaft 310, and a third spur gear 311; a first rotating shaft 301 is rotatably connected to the upper right of the middle annular frame 7; a first straight gear 302 is fixedly connected to the front side of the outer surface of the first rotating shaft 301; a first worm 303 is fixedly connected to the rear side of the outer surface of the first rotating shaft 301; a second rotating shaft 304 is rotatably connected to the lower right inside the upper pipe sleeve 2; a first worm wheel 305 is fixedly connected above the outer surface of the second rotating shaft 304; the first worm 303 engages a first worm gear 305; a second spur gear 306 is fixedly connected below the outer surface of the second rotating shaft 304; a sliding rotating ring 307 is connected above the side surface of the middle annular frame 7 in a sliding way; an outer gear ring 308 is fixedly connected to the outer side of the sliding rotating ring 307; the second spur gear 306 engages the outer toothed ring 308; an inner gear ring 309 is fixedly connected to the inner side of the sliding rotating ring 307; the front group and the rear group of the middle annular frame 7 are respectively connected with a group of third rotating shafts 310 in a rotating way; the lower part of the third rotating shaft 310 is rotatably connected with the switching pipe sleeve 5; a third spur gear 311 is fixedly connected above the outer surface of the third rotating shaft 310; the third spur gear 311 engages the inner toothed ring 309; the locking component is fixedly connected below the outer surface of the third rotating shaft 310.
As shown in fig. 7-9, the latch assembly includes a first bushing 401, a double-slot mount 402, a left latch 403, a right latch 404, and a compression spring 405; a group of first shaft sleeves 401 are fixedly connected below the outer surfaces of the front and rear groups of third rotating shafts 310; a double-groove fixing frame 402 is fixedly connected to the outer surface of the first shaft sleeve 401; the left side of the double-groove fixing frame 402 is connected with a left lock pin 403 in a sliding manner; the right side of the double-groove fixing frame 402 is slidably connected with a right locking pin 404; a compression spring 405 is respectively connected between the double-groove fixing frame 402 and the left lock pin 403 and the right lock pin 404; the lower surfaces of the left and right locking pins 403, 404 each contact the locking groove of the socket 202.
Tangent plane structures are arranged above the left lock pin 403 and the right lock pin 404.
Firstly, the device is fixed at the wellhead, the upper end of the fixed rod 101 is connected with hoisting equipment of an oil well, the lower end of the fixed rod 101 is connected with drilling equipment, and the hoisting equipment drives the fixed rod 101 to slide along the inner surface of the movable pin 102 so that the drilling equipment performs drilling operation.
When the post worker finds that the abnormal overflow phenomenon occurs, the post worker reports to the control center, and a responsible person controls the hoisting equipment to collect the drill, so that the hoisting equipment drives the fixed rod 101 to slide upwards along the inner surface of the movable pin 102 to enable the drilling equipment to be collected upwards, when the drilling equipment contacts the lower surface of the movable pin 102, the drilling equipment drives the movable pin 102 to move upwards, and when the drilling equipment drives the movable pin 102 to move upwards away from the valve ball 207, the side spring 206 in a compressed state initially pushes the annular sliding plate 205 to move leftwards along the inner support 204, so that the valve ball 207 is pushed into the bearing seat 202.
Then, when the tooth space on the right side of the moving pin 102 moving upward continuously engages with the first straight gear 302, the moving pin 102 drives the first straight gear 302 to rotate, the first straight gear 302 drives the first rotating shaft 301 to rotate, the first rotating shaft 301 drives the first worm 303 to rotate, the first worm 303 engages with the first worm wheel 305 to drive the second rotating shaft 304 to rotate, the second rotating shaft 304 drives the second straight gear 306 to rotate, the second straight gear 306 engages with the outer toothed ring 308 to drive the sliding rotating ring 307 and the inner toothed ring 309 to rotate along the middle ring frame 7, the inner toothed ring 309 engages with the third straight gear 311 to drive the third rotating shaft 310 to rotate, the third rotating shaft 310 drives the first shaft sleeve 401 to rotate, the first shaft sleeve 401 drives the double-groove fixing frame 402, the left lock pin 403 and the right lock pin 404 to rotate out of the side lock groove of the socket 202, so that the socket 202 is unlocked, and the socket 202 is pushed by the lower spring 203 in an initial compressed state to jack up the valve ball 207 to be closely attached to the lower portion of the valve socket 201, the well closing operation is completed while the drill retracting operation is completed.
After the pressure of the formation is released by the pressure relief device, the valve ball 207 can be separated from the valve seat 201 by pressing down the valve ball 207, the socket 202 and the lower spring 203 are driven to compress downwards while the valve ball 207 is pressed down, the socket 202 is clamped back into the left lock pin 403 and the right lock pin 404 for locking, and finally the valve ball 207 is pushed back into the side pipe sleeve 4 to complete the well opening operation.
Example 2
On the basis of embodiment 1, as shown in fig. 1, 5 and 7, the device further comprises an auxiliary ball-shifting assembly, the left side of the middle annular frame 7 is provided with the auxiliary ball-shifting assembly, and the auxiliary ball-shifting assembly comprises a left bushing 501, a left rotating wheel 502, a first bevel gear 503, a fourth rotating shaft 504, a second bevel gear 505, a second worm 506, a shaft seat 507, a fifth rotating shaft 508, a second worm gear 509, a second shaft sleeve 510, a torsion spring 511 and a shifting lever 512; a left bushing 501 is fixedly connected to the left side of the upper pipe sleeve 2; the rear side of the outer surface of the left bushing 501 is fixedly connected with a middle annular frame 7; the inner surface of the left bushing 501 is rotatably connected with a left rotating wheel 502; a first bevel gear 503 is fixedly connected to the rear side of the rotating shaft part of the left rotating wheel 502; the left side of the middle annular frame 7 is rotatably connected with a fourth rotating shaft 504; the lower part of the fourth rotating shaft 504 is rotatably connected with a switching pipe sleeve 5; a second bevel gear 505 is fixedly connected above the outer surface of the fourth rotating shaft 504; the first bevel gear 503 engages the second bevel gear 505; a second worm 506 is fixedly connected below the outer surface of the fourth rotating shaft 504; a shaft seat 507 is fixedly connected to the left side of the inner part of the lower pipe sleeve 3; the right side of the shaft seat 507 is rotatably connected with a fifth rotating shaft 508; a second worm wheel 509 is fixedly connected to the middle of the outer surface of the fifth rotating shaft 508; the second worm 506 engages a second worm gear 509; a group of second shaft sleeves 510 is fixedly connected to the front side and the rear side of the outer surface of the fifth rotating shaft 508; a torsion spring 511 is fixedly connected between the second shaft sleeve 510 and the shaft seat 507; a driving lever 512 is fixedly connected below the second shaft sleeve 510.
The right front and the right rear of the bearing seat 202 are respectively provided with a slotted structure aligned with the two groups of deflector rods 512.
In order to more efficiently complete the well opening operation, the hoisting device is controlled to drive the fixed rod 101 to slide downwards, so that the drilling device pushes the ball pressing device 207 to simultaneously drive the bearing seat 202 and the lower spring 203 to compress downwards, the moving pin 102 moves downwards along with the drilling device and simultaneously drives the first straight gear 302 to rotate in the opposite direction, the double-groove fixing frame 402, the left lock pin 403 and the right lock pin 404 are rotated and reset, when the bearing seat 202 passes through the left lock pin 403 and the right lock pin 404, the bearing seat 202 pushes the bearing seat 202 into the double-groove fixing frame 402 along the top tangent plane of the left lock pin 403 and the right lock pin 404, and after the side locking groove of the bearing seat 202 locks the left lock pin 403 and the right lock pin 404, the compressed compression spring 405 simultaneously drives the left lock pin 403 and the right lock pin 404 to lock into the side locking groove of the bearing seat 202 to complete the locking operation.
Then, the hoisting equipment is controlled to drive the fixing rod 101 and the drilling equipment to move upwards away from the valve ball 207, then the left rotating wheel 502 is manually rotated to drive the first bevel gear 503 to rotate, the first bevel gear 503 is meshed with the second bevel gear 505 to drive the fourth rotating shaft 504 to rotate, the fourth rotating shaft 504 drives the second worm 506 to rotate, the second worm 506 is meshed with the second worm wheel 509 to drive the fifth rotating shaft 508 to rotate, the fifth rotating shaft 508 drives the shifting rod 512 to rotate upwards through the second sleeve 510, meanwhile, the torsion spring 511 is twisted, the shifting rod 512 penetrates through the side opening of the bearing seat 202 to push the valve ball 207 into the annular sliding plate 205 rightwards, then the hoisting equipment is controlled to drive the fixing rod 101 and the drilling equipment to move downwards, and the drilling equipment is pressed into the side pipe sleeve 4 from the left side of the valve ball 207 to complete the well opening operation.
Example 3
On the basis of the embodiment 2, as shown in fig. 1, 4 and 10, the locking device further comprises an auxiliary locking assembly, the auxiliary locking assembly is arranged on the right side of the middle annular frame 7, and the auxiliary locking assembly comprises a right bushing 601, a right rotating wheel 602, a third bevel gear 603, a sixth rotating shaft 604, a fourth bevel gear 605, a third shaft bushing 606, a side bracket 607, a first wedge block 608, a spring sliding block 609, an arc-shaped clamping plate 610 and a second wedge block 611; a right bushing 601 is fixedly connected to the right side of the upper pipe sleeve 2; the rear side of the outer surface of the right bushing 601 is fixedly connected with a middle annular frame 7; the inner surface of the right bushing 601 is rotatably connected with a right rotating wheel 602; a third bevel gear 603 is fixedly connected to the rear side of the rotating shaft part of the right rotating wheel 602; the right side of the middle annular frame 7 is rotatably connected with a sixth rotating shaft 604; a fourth bevel gear 605 is fixedly connected to the upper side of the outer surface of the sixth rotating shaft 604; third bevel gear 603 engages fourth bevel gear 605; a third shaft sleeve 606 is fixedly connected to the lower side of the outer surface of the sixth rotating shaft 604; a side bracket 607 is fixedly connected to the rear side of the third shaft sleeve 606; the right side of the side bracket 607 is bolted with a first wedge block 608; the inner surface of the side pipe sleeve 4 is connected with two groups of spring sliding blocks 609, and the two groups of spring sliding blocks 609 are respectively positioned at the front side and the rear side of the valve ball 207; an arc-shaped clamping plate 610 is fixedly connected between the two groups of spring sliding blocks 609; a second wedge block 611 is fixedly connected above the arc-shaped clamping plate 610; the first wedge block 608 abuts the second wedge block 611.
If the well opening state needs to be kept when the drill retracting work is finished, before the drill retracting work is carried out, the right rotating wheel 602 is manually rotated to drive the third bevel gear 603 to rotate, the third bevel gear 603 is meshed with the fourth bevel gear 605 to drive the sixth rotating shaft 604 to rotate, the sixth rotating shaft 604 drives the side bracket 607 and the first wedge block 608 to move downwards through the third shaft sleeve 606, the first wedge block 608 pushes the second wedge block 611 to drive the arc-shaped clamping plate 610 to move downwards, meanwhile, the spring sliding block 609 compresses downwards, the arc-shaped clamping plate 610 clamps the left side of the valve ball 207, then the rotating state of the right rotating wheel 602 is locked through the equipment lock, and the well opening state can be still kept after the drill retracting work is finished.
It should be understood that the above description is for exemplary purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.
Claims (10)
1. A blowout prevention device for oil exploitation in an oil field comprises an upper connecting pipe (1), an upper pipe sleeve (2), a lower pipe sleeve (3), a side pipe sleeve (4), a switching pipe sleeve (5), a lower connecting pipe (6) and a middle annular frame (7); an upper pipe sleeve (2) is connected below the upper connecting pipe (1); a lower pipe sleeve (3) is connected below the upper pipe sleeve (2); the right side of the lower pipe sleeve (3) is connected with a side pipe sleeve (4); a switching pipe sleeve (5) is connected below the lower pipe sleeve (3); a lower connecting pipe (6) is connected below the switching pipe sleeve (5); a middle annular frame (7) is connected to the lower part of the inner side of the upper pipe sleeve (2); it is characterized by also comprising a triggering component, a sealing plug component, a power transmission component and a locking component; a trigger assembly is connected between the upper connecting pipe (1) and the lower connecting pipe (6); a sealing plug component is connected above the switching pipe sleeve (5); the right side of the sealing plug component is connected with a side pipe sleeve (4); the upper part of the sealing plug component is connected with a middle annular frame (7); the middle part of the trigger component contacts the sealing plug component; the middle annular frame (7) is connected with a power transmission assembly; the upper right part of the power transmission component is connected with an upper pipe sleeve (2); a switching pipe sleeve (5) is connected below the power transmission assembly; a locking assembly is connected below the power transmission assembly; the latch assembly contacts the bung assembly;
the sealing plug assembly comprises a valve seat (201), a bearing seat (202), a lower spring (203), an inner support (204), an annular sliding plate (205), a side spring (206) and a valve ball (207); a valve seat (201) is connected below the middle annular frame (7); a bearing seat (202) is arranged above the adapter sleeve (5); a lower spring (203) is connected between the bearing seat (202) and the adapter sleeve (5); the lower part of the trigger component contacts the inner surface of the bearing seat (202); the inner surface of the side pipe sleeve (4) is connected with an inner bracket (204); the inner surface of the inner support (204) is connected with an annular sliding plate (205); a side spring (206) is connected between the right side of the annular sliding plate (205) and the inner bracket (204); a valve ball (207) is inserted at the left side of the annular sliding plate (205); the left side of the valve ball (207) contacts the trigger component, and the valve ball (207) is fixed with the valve seat (201) through the inner support (204) after the trigger component is separated from the contact; the front side and the rear side of the bearing seat (202) are respectively provided with a group of locking grooves, and the locking components are contacted with the groups of locking grooves on the front side and the rear side of the bearing seat (202).
2. The blowout preventer according to claim 1, wherein the trigger assembly comprises a fixed rod (101) and a movable pin (102); a fixed rod (101) is connected between the upper connecting pipe (1) and the lower connecting pipe (6); the outer surface of the middle part of the fixed rod (101) is connected with a movable pin (102); an outer surface of the moving pin (102) contacts the closure assembly.
3. The blowout preventer according to claim 2, wherein the fixing rod (101) is provided with a protruding strip structure on each of the left and right sides.
4. The blowout prevention device for oil field petroleum exploitation according to claim 2, wherein a plurality of groups of tooth grooves are formed in the right side of the moving pin (102) at equal intervals from top to bottom.
5. The oilfield oil exploitation blowout prevention device according to claim 4, wherein the power transmission assembly comprises a first rotating shaft (301), a first straight gear (302), a first worm (303), a second rotating shaft (304), a first worm gear (305), a second straight gear (306), a sliding rotating ring (307), an outer toothed ring (308), an inner toothed ring (309), a third rotating shaft (310) and a third straight gear (311); a first rotating shaft (301) is connected to the upper right of the middle annular frame (7); the front side of the outer surface of the first rotating shaft (301) is connected with a first straight gear (302); the rear side of the outer surface of the first rotating shaft (301) is connected with a first worm (303); a second rotating shaft (304) is connected to the lower right inside the upper pipe sleeve (2); a first worm wheel (305) is connected above the outer surface of the second rotating shaft (304); the first worm (303) engages a first worm gear (305); a second spur gear (306) is connected below the outer surface of the second rotating shaft (304); a sliding rotating ring (307) is connected above the side surface of the middle annular frame (7); the outer side of the sliding rotating ring (307) is connected with an outer gear ring (308); the second spur gear (306) engages the outer toothed ring (308); the inner side of the sliding rotating ring (307) is connected with an inner gear ring (309); the front side and the rear side of the middle annular frame (7) are respectively connected with a group of third rotating shafts (310); a switching pipe sleeve (5) is connected below the third rotating shaft (310); a third spur gear (311) is connected above the outer surface of the third rotating shaft (310); the third spur gear (311) is meshed with the inner toothed ring (309); the lower part of the outer surface of the third rotating shaft (310) is connected with a clamping lock component.
6. The blowout preventer according to claim 5, wherein the latch assembly comprises a first bushing (401), a double-groove holder (402), a left latch (403), a right latch (404), and a compression spring (405); a group of first shaft sleeves (401) are respectively connected below the outer surfaces of the front and rear groups of third rotating shafts (310); the outer surface of the first shaft sleeve (401) is connected with a double-groove fixing frame (402); the left side of the double-groove fixing frame (402) is connected with a left lock pin (403); the right side of the double-groove fixing frame (402) is connected with a right lock pin (404); a compression spring (405) is respectively connected between the double-groove fixing frame (402) and the left lock pin (403) and the right lock pin (404); the lower surfaces of the left lock pin (403) and the right lock pin (404) are both contacted with the lock groove of the bearing seat (202).
7. The blowout preventer according to claim 6, wherein a tangent structure is arranged above each of the left locking pin (403) and the right locking pin (404).
8. The blowout preventer for oil field oil exploitation according to claim 7, further comprising an auxiliary ball-shifting assembly, wherein the left side of the middle annular frame (7) is provided with the auxiliary ball-shifting assembly, and the auxiliary ball-shifting assembly comprises a left bushing (501), a left rotating wheel (502), a first bevel gear (503), a fourth rotating shaft (504), a second bevel gear (505), a second worm (506), a shaft seat (507), a fifth rotating shaft (508), a second worm gear (509), a second shaft sleeve (510), a torsion spring (511) and a shifting lever (512); the left side of the upper pipe sleeve (2) is connected with a left bushing (501); the rear side of the outer surface of the left bushing (501) is connected with a middle annular frame (7); the inner surface of the left bushing (501) is connected with a left rotating wheel (502); a first bevel gear (503) is connected to the rear side of the rotating shaft part of the left rotating wheel (502); the left side of the middle annular frame (7) is connected with a fourth rotating shaft (504); the lower part of the fourth rotating shaft (504) is connected with a switching pipe sleeve (5); a second bevel gear (505) is connected above the outer surface of the fourth rotating shaft (504); the first bevel gear (503) engages the second bevel gear (505); a second worm (506) is connected below the outer surface of the fourth rotating shaft (504); the left side of the inner part of the lower pipe sleeve (3) is connected with a shaft seat (507); the right side of the shaft seat (507) is connected with a fifth rotating shaft (508); the middle part of the outer surface of the fifth rotating shaft (508) is connected with a second worm wheel (509); the second worm (506) engages a second worm gear (509); the front side and the rear side of the outer surface of the fifth rotating shaft (508) are respectively connected with a group of second shaft sleeves (510); a torsion spring (511) is connected between the second shaft sleeve (510) and the shaft seat (507); a deflector rod (512) is connected below the second shaft sleeve (510).
9. The blowout preventer for oil recovery in oil fields according to claim 8, wherein the right front and the right rear of the bearing seat (202) are respectively provided with a slotted structure aligned with the two groups of deflector rods (512).
10. The blowout preventer for oil recovery in oil fields according to claim 9, further comprising an auxiliary locking assembly, wherein the auxiliary locking assembly is arranged on the right side of the middle annular frame (7), and comprises a right bushing (601), a right rotating wheel (602), a third bevel gear (603), a sixth rotating shaft (604), a fourth bevel gear (605), a third shaft sleeve (606), a side bracket (607), a first wedge block (608), a spring slider (609), an arc-shaped snap plate (610) and a second wedge block (611); the right side of the upper pipe sleeve (2) is connected with a right bushing (601); the rear side of the outer surface of the right bushing (601) is connected with a middle annular frame (7); the inner surface of the right bushing (601) is connected with a right rotating wheel (602); a third bevel gear (603) is connected to the rear side of the rotating shaft part of the right rotating wheel (602); the right side of the middle annular frame (7) is connected with a sixth rotating shaft (604); a fourth bevel gear (605) is connected to the upper side of the outer surface of the sixth rotating shaft (604); the third bevel gear (603) engages the fourth bevel gear (605); a third shaft sleeve (606) is connected to the lower side of the outer surface of the sixth rotating shaft (604); a side bracket (607) is connected with the rear side of the third shaft sleeve (606); the right side of the side bracket (607) is connected with a first wedge-shaped block (608); the inner surface of the side pipe sleeve (4) is connected with two groups of spring sliding blocks (609), and the two groups of spring sliding blocks (609) are respectively positioned at the front side and the rear side of the valve ball (207); an arc-shaped clamping plate (610) is connected between the two groups of spring sliding blocks (609); a second wedge-shaped block (611) is connected above the arc-shaped clamping plate (610); the first wedge block (608) abuts the second wedge block (611).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025030.4A CN113464083B (en) | 2021-09-02 | 2021-09-02 | Blowout prevention device for oil field oil exploitation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025030.4A CN113464083B (en) | 2021-09-02 | 2021-09-02 | Blowout prevention device for oil field oil exploitation |
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| CN113464083A CN113464083A (en) | 2021-10-01 |
| CN113464083B true CN113464083B (en) | 2021-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5086802A (en) * | 1990-10-22 | 1992-02-11 | Spears Harry L | Safety check valve |
| CN205277360U (en) * | 2016-01-05 | 2016-06-01 | 延长油田股份有限公司 | Automatic blowout preventer of oil pumping motor -pumped well |
| CN205858253U (en) * | 2016-07-05 | 2017-01-04 | 中国石油天然气股份有限公司 | Wellhead blowout preventor |
| CN210714573U (en) * | 2019-07-02 | 2020-06-09 | 中国石油天然气股份有限公司 | Automatic blowout preventer for polished rod breaking-off wellhead |
| CN211370338U (en) * | 2019-11-04 | 2020-08-28 | 鄂静 | Self-adaptive large-angle eccentric wear prevention wellhead sealing device |
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