CN217538643U - Automatic locking sealing connecting device for acidizing and fracturing operations - Google Patents
Automatic locking sealing connecting device for acidizing and fracturing operations Download PDFInfo
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- CN217538643U CN217538643U CN202221731608.8U CN202221731608U CN217538643U CN 217538643 U CN217538643 U CN 217538643U CN 202221731608 U CN202221731608 U CN 202221731608U CN 217538643 U CN217538643 U CN 217538643U
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Abstract
The utility model provides an automatic locking seals connecting device for acidizing fracturing operation, relates to acidizing fracturing operation technical field, connect body, sub-unit connection body and blowout prevention pipe string including upper portion, the up end and the lower terminal surface of sub-unit connection body all adopt flange structure, the lower terminal surface of upper portion connection body provides the sealed profile of being connected with sub-unit connection body up end, is equipped with automatic latch segment, connecting pin axle and locking hydraulic cylinder assembly on the connection body of upper portion, automatic latch segment installs in the recess at upper portion connection body top, the top of automatic latch segment is provided with the locking ring, the top center fixedly connected with guide cap of locking ring, the connecting pin axle is used for connecting body and automatic latch segment with upper portion, locking hydraulic cylinder assembly lower extreme fixed connection is on the outer wall of upper portion connection body, and upper end fixed connection is on the locking ring, the technical scheme of the utility model be convenient for on-the-spot blowout prevention pipe string automatic installation butt joint, improve work efficiency, avoid the potential safety hazard.
Description
Technical Field
The utility model relates to an acidizing fracturing operation technical field, concretely relates to automatic locking seals connecting device for acidizing fracturing operation.
Background
With the increasing development technology and means of new wells of oil and gas fields, coiled tubing operation and horizontal well perforation fracturing are applied more and more widely in recent years, and coiled tubing blowout preventer string well control devices are applied to control bottom hole pressure in the two operation processes so as to avoid well blowout accidents. Due to the particularity of the blowout preventer string, the height of the equipment assembly is about more than ten meters, and the blowout preventer string is usually lifted by a large-tonnage crane on an operation site and then manually connected to a lower wellhead by site workers. In addition, the conventional blowout-preventing pipe string is connected in a union mode, the union nut is heavy in weight, so that the nut is very laborious to tighten and disassemble, and the installation precision can be ensured only by continuously communicating a site crane driver with an operator through an interphone and adjusting the angle and the position of the blowout-preventing pipe string. In the operation mode, time and labor are wasted, and the operation mode is a great potential safety hazard for field operators.
SUMMERY OF THE UTILITY MODEL
Not enough to above prior art, the utility model aims to provide an automatic locking seals connecting device for acidizing fracturing operation can solve current blowout preventer string installation and waste time and energy, has very big potential safety hazard problem to the site worker moreover.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an automatic locking seals connecting device for acidizing fracturing operation, includes upper portion connection body, sub-unit connection body and prevents spouting the pipe cluster, the up end and the lower terminal surface of sub-unit connection body all adopt the flange structure, the lower terminal surface of upper portion connection body provides the sealed profile of being connected with sub-unit connection body up end, pass through bolted connection between upper portion connection body and the sub-unit connection body, be equipped with automatic locking piece, connecting pin axle and locking hydraulic cylinder assembly on the connection body of upper portion, automatic locking piece installs in the recess at upper portion connection body top, automatic locking piece's top is provided with the locking ring, the top center fixedly connected with guide cap of locking ring, connecting pin axle is used for connecting upper portion connection body and automatic locking piece, locking hydraulic cylinder assembly lower extreme fixed connection is on the outer wall of upper portion connection body, and upper end fixed connection is on the locking ring.
Preferably, the number of the locking cylinder assemblies is three, and the three locking cylinder assemblies are equidistantly distributed on the outer wall of the upper connecting body.
Preferably, locking hydraulic cylinder assembly includes upper portion hydraulic cylinder protector and lower part hydraulic cylinder protector, bolted connection is passed through on the locking ring at the top of upper portion hydraulic cylinder protector, bolted connection is passed through on the outer wall of upper portion connector body in the both sides of lower part hydraulic cylinder protector, the bottom threaded connection of upper portion hydraulic cylinder protector has the pilot lever, switch cylinder liner and master cylinder have been cup jointed through the screw in that the lower part hydraulic cylinder protector is inside, the bottom threaded connection of master cylinder has the cylinder cap, still includes the piston rod, the lower pot head of piston rod is established in the piston, the piston install in the master cylinder and with master cylinder inner wall clearance fit, the piston passes through lock nut and fixes on the piston rod, the upper end of piston rod is passed through lock nut and is fixed on upper portion hydraulic cylinder protector.
Preferably, a tension spring is further arranged between the outer wall of the automatic locking block and the upper connecting body.
Preferably, the outer end of the connecting pin shaft is provided with a grease nipple.
Preferably, the lower end of the blowout prevention pipe string is provided with two dovetail grooves, a sealing ring is installed in each dovetail groove, two sealing profiles are arranged inside the lower connecting body, and an annular pressure test channel is arranged on the outer circular surface of the upper end face of the lower connecting body.
Preferably, an oil path adapter is arranged between the locking hydraulic cylinder assembly and the upper connecting body, the outer wall of the upper connecting body is provided with a closed cavity oil port and an opened cavity oil port, and the upper connecting body is internally provided with a closed oil path distribution cavity and an opened oil path distribution cavity which are respectively communicated with the closed cavity oil port and the opened cavity oil port.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, the automatic locking block depends on the connecting pin shaft arranged in the upper connecting body as a rotating shaft, and the position fixation under the initial state is realized through the external tension spring device, when the blowout prevention pipe string is lowered, the bulge in the locking block can firstly contact the blowout prevention pipe string and realize that the locking block rotates towards the center of a well mouth and is finally fixed on the matching surface of the blowout prevention pipe string to realize the locking; the locking hydraulic cylinder assembly is connected with the locking ring and moves up and down under the action of a remote pressure source, so that the locking function of the system after locking is realized.
2. The utility model discloses in, the direction cap is the horn mouth design, through the bolt fastening in the top of locked loop, when preventing spouting the pipe cluster and transferring, can effectively guarantee to prevent spouting among the leading-in automatic locking sealing connecting device of pipe cluster.
3. The utility model discloses in, grease nipple is installed to connecting pin axle one end to applying lubricating oil to round pin axle inside, the rotation of the automatic latch segment of being convenient for.
4. The utility model discloses in, blowout preventer string lower extreme adopts twice sealing device, and each sealing washer all adopts the dovetail design, avoids the damage of sealing washer when blowout preventer string transfers to the at utmost.
5. The utility model discloses in, the up end off-round surface of sub-unit connection body is provided with annular pressure testing passageway for after blowout prevention pipe cluster installation is accomplished, carry out pressure test to the inside twice sealing washer of body is connected on upper portion and verify, in order to guarantee the security performance before the operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a perspective view of an automatic locking sealing connection device for acidizing and fracturing operations according to the present invention;
FIG. 2 is a schematic view of the locking state of the automatic locking block of the automatic locking sealing connecting device for acidizing and fracturing operations;
FIG. 3 is a schematic view of an open state of an automatic locking block of the automatic locking sealing connection device for acidizing and fracturing operations according to the present invention;
FIG. 4 is a cross-sectional view of the center of an automatic locking, sealing and connecting device for acidizing and fracturing operations, shown in the free open position;
fig. 5 is a cross-sectional view of the locked and unlocked center of the automatic locking sealing connection device for acidizing and fracturing operations after the connection of the blowout preventer string;
fig. 6 is a cross-sectional view of the center of the automatic locking and sealing connection device for acidizing and fracturing operations, which is locked and locked after being connected to the blowout preventer string;
fig. 7 is a central cross-sectional view of the inside opening and closing of the distribution oil circuit of the automatic locking sealing connecting device upper connecting body for acidizing and fracturing operations provided by the utility model.
Fig. 8 is a partial central cross-sectional view of an automatic locking seal connection device locking cylinder assembly for acidizing fracturing operations as provided by the present invention.
Description of reference numerals:
1-upper connecting body, 2-lower connecting body, 3-blowout prevention pipe string, 4-bolt, 5-automatic locking block, 6-connecting pin shaft, 7-locking hydraulic cylinder assembly, 701-upper hydraulic cylinder protector, 702-lower hydraulic cylinder protector, 703-indicating rod, 704-switch cylinder sleeve, 705-master cylinder, 706-cylinder cover, 707-piston rod, 708-piston, 8-locking ring, 9-guide cap, 10-locking nut, 11-tension spring, 12-grease nozzle, 13-dovetail groove, 14-annular pressure test channel, 15-oil way adapter, 16-closed cavity oil port, 17-opened cavity oil port, 18-closed oil way distribution cavity and 19-opened oil way distribution cavity.
Detailed Description
The invention will be described in detail, with reference to the drawings, by way of example, and it is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the broad invention.
As shown in fig. 1-8, an automatic locking and sealing connection device for acidizing and fracturing operations comprises an upper connection body 1, a lower connection body 2 and a blowout preventer string 3, the upper end face and the lower end face of the lower connection body 2 both adopt flange structures, the lower end face of the upper connection body 1 provides a sealing profile connected with the upper end face of the lower connection body 2, the upper connection body 1 and the lower connection body 2 are connected through bolts 4, an automatic locking block 5, a connecting pin 6 and a locking hydraulic cylinder assembly 7 are arranged on the upper connection body 1, the automatic locking block 5 is installed in a groove in the top of the upper connection body 1, a locking ring 8 is arranged above the automatic locking block 5, the top center of the locking ring 8 is connected with a guide cap 9 through the bolts 4, the connecting pin 6 is used for connecting the upper connection body 1 with the automatic locking block 5, the number of the locking hydraulic cylinder assemblies 7 is three, the three locking hydraulic cylinder assemblies 7 are equidistantly distributed on the outer wall of the upper connection body 1, the lower end of the locking cylinder assemblies 7 are connected on the outer wall of the upper connection body 1 through the bolts 4, and the locking ring assemblies 7 are moved through the locking cylinder assemblies 8.
In the embodiment, the lower end face of the lower connecting body 2 is provided with a standard flange for connecting a lower wellhead device, and the upper end face is provided with a specially designed flange for butting with the upper connecting body 1; and a sealing profile is arranged at the matching part of the lower connecting body 2 and the upper connecting body 1 and is used for separating and protecting a hydraulic source. The upper connecting body 1 is provided with an automatic locking block groove and a connecting pin shaft fixing hole, and the automatic locking block 5 rotates by taking the connecting pin shaft 6 as a rotating shaft to lock and unlock the blowout preventer string 3; the locking hydraulic cylinder assembly 7 is connected with the locking ring 8 and moves up and down under the action of a remote pressure source to realize the locking function after the system is locked; the top of the locking ring 8 is provided with the guide cap 9, the guide cap 9 is in a horn mouth design and is fixed above the locking ring 8 through the bolt 4, and when the blowout preventer string 3 is placed, the blowout preventer string 3 can be effectively guided into the automatic locking and sealing connecting device.
Further, in this embodiment, the locking hydraulic cylinder assembly 7 includes an upper hydraulic cylinder protector 701 and a lower hydraulic cylinder protector 702, the top of the upper hydraulic cylinder protector 701 is connected to the locking ring 8 through a bolt 4, two sides of the lower hydraulic cylinder protector 702 are connected to the outer wall of the upper connecting body 1 through bolts 4, the bottom of the upper hydraulic cylinder protector 701 is connected with an indicating rod 703 in a threaded manner, and the indicating rod 703 is used for displaying an on-off state of the locking hydraulic cylinder assembly; a switch cylinder sleeve 704 and a main oil cylinder 705 are sequentially sleeved in the lower hydraulic cylinder protector 702 through threads, and the switch cylinder sleeve 704 is used for distributing the trend of oil ways; the bottom of the main oil cylinder 705 is in threaded connection with a cylinder cover 706 and further comprises a piston rod 707, the lower end of the piston rod 707 is sleeved in the piston 708, the piston 708 is installed in the main oil cylinder 705 and is in clearance fit with the inner wall of the main oil cylinder 705, the piston 708 is fixed on the piston rod 707 through a locking nut 10, and the upper end of the piston rod 707 is fixed on the upper hydraulic cylinder protector 701 through the locking nut 10.
Further, in this embodiment, a tension spring 11 is further disposed between the outer wall of the automatic locking block 5 and the upper connecting body 1, and the tension spring 11 can fix the position of the automatic locking block 5 in the initial state. When the blowout preventer string 3 is placed downwards, the protrusion inside the automatic locking block 5 can firstly contact the blowout preventer string 3, the automatic locking block 5 rotates towards the center of a wellhead through the connecting pin shaft 6, and finally the automatic locking block is fixed on the matching surface of the blowout preventer string 3 to realize locking.
Further, in this embodiment, a grease nipple 12 is installed at the outer end of the connecting pin 6 so as to apply grease to the inside of the connecting pin 6, thereby facilitating the rotation of the automatic locking piece 5.
Further, in this embodiment, two dovetail grooves 13 are formed in the lower end of the blowout preventer string 3, and a seal ring is installed in the dovetail groove 13, so that damage to the seal ring when the blowout preventer string 3 is lowered is avoided to the greatest extent. The inside of lower part connecting body 2 is provided with twice seal profile for after the blowout preventer 3 is transferred and is accomplished, form effective seal. An annular pressure test channel 14 is arranged on the outer circular surface of the upper end face of the lower connecting body 2 and used for carrying out pressure test verification on two sealing rings inside the upper connecting body 1 after the blowout preventer string 3 is installed, so that the safety performance before operation is guaranteed.
Further, in this embodiment, an oil path adapter 15 is disposed between the locking cylinder assembly 7 and the upper connecting body 1, so that the hydraulic oil distributed by the upper connecting body 1 can smoothly enter the opening cavity and the closing cavity of the locking cylinder assembly 7. The outer wall of the upper connecting body 1 is provided with a closed cavity oil port 16 and an opened cavity oil port 17, the inside of the upper connecting body 1 is provided with a closed oil path distribution cavity 18 and an opened oil path distribution cavity 19 which are respectively communicated with the closed cavity oil port 16 and the opened cavity oil port 17, and synchronous operation of a plurality of locking hydraulic cylinder assemblies 7 can be realized only through one hydraulic source.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the application concept of the present invention within the technical scope disclosed in the present invention.
Claims (7)
1. The utility model provides an automatic locking seals connecting device for acidizing fracturing operation, includes upper portion connecting body (1), sub-unit connection body (2) and blowout preventer cluster (3), the up end and the lower terminal surface of sub-unit connection body (2) all adopt flange structure, the lower terminal surface of upper portion connecting body (1) provides the sealed profile of being connected with sub-unit connection body (2) up end, be connected its characterized in that through bolt (4) between upper portion connecting body (1) and sub-unit connection body (2): be equipped with automatic locking piece (5), connecting pin axle (6) and locking hydraulic cylinder assembly (7) on upper portion connection body (1), install in the recess at upper portion connection body (1) top automatic locking piece (5), the top of automatic locking piece (5) is provided with locking ring (8), the top center fixedly connected with direction cap (9) of locking ring (8), connecting pin axle (6) are used for connecting upper portion connection body (1) and automatic locking piece (5), locking hydraulic cylinder assembly (7) lower extreme fixed connection is on the outer wall of upper portion connection body (1), and upper end fixed connection is on locking ring (8).
2. An automatic lock-tight seal connection for acid fracturing operations as claimed in claim 1, wherein: the number of locking hydraulic cylinder assemblies (7) is three, and three locking hydraulic cylinder assemblies (7) equidistance distribute on the outer wall of body (1) is connected on upper portion.
3. An automatic locking seal connection for acid fracturing operations as claimed in claim 2 wherein: the locking hydraulic cylinder assembly (7) comprises an upper hydraulic cylinder protector (701) and a lower hydraulic cylinder protector (702), the top of the upper hydraulic cylinder protector (701) is connected to a locking ring (8) through a bolt (4), the two sides of the lower hydraulic cylinder protector (702) are connected to the outer wall of an upper connecting body (1) through bolts (4), the bottom of the upper hydraulic cylinder protector (701) is in threaded connection with an indicating rod (703), a switch cylinder sleeve (704) and a main cylinder (705) are sequentially sleeved in the lower hydraulic cylinder protector (702) through threads, the bottom of the main cylinder (705) is in threaded connection with a cylinder cover (706), the locking hydraulic cylinder assembly further comprises a piston rod (707), the lower end of the piston rod (707) is sleeved in the piston (708), the piston (708) is installed in the main cylinder (705) and is in clearance fit with the inner wall of the main cylinder (705), the piston (708) is fixed to the piston rod (707) through a locking nut (10), and the upper end of the piston rod (707) is fixed to the upper hydraulic cylinder protector (701) through the locking nut (10).
4. An automatic locking seal connection for acid fracturing operations as claimed in claim 1 wherein: and a tension spring (11) is also arranged between the outer wall of the automatic locking block (5) and the upper connecting body (1).
5. An automatic locking seal connection for acid fracturing operations as claimed in claim 1 wherein: and a grease nipple (12) is arranged at the outer end of the connecting pin shaft (6).
6. An automatic locking seal connection for acid fracturing operations as claimed in claim 1 wherein: two dovetail grooves (13) have been seted up to the lower extreme of blowout preventer cluster (3), install the sealing washer in dovetail groove (13), the inside of sub-unit connection body (2) is provided with twice sealed profile, the up end external circular surface of sub-unit connection body (2) is provided with annular pressure testing passageway (14).
7. An automatic locking seal connection for acid fracturing operations as claimed in claim 1 wherein: an oil way adapter (15) is arranged between the locking hydraulic cylinder assembly (7) and the upper connecting body (1), the outer wall of the upper connecting body (1) is provided with a cavity closing oil port (16) and a cavity opening oil port (17), and a closed oil way distribution cavity (18) and an opened oil way distribution cavity (19) which are respectively communicated with the cavity closing oil port (16) and the cavity opening oil port (17) are arranged in the upper connecting body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221731608.8U CN217538643U (en) | 2022-07-07 | 2022-07-07 | Automatic locking sealing connecting device for acidizing and fracturing operations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221731608.8U CN217538643U (en) | 2022-07-07 | 2022-07-07 | Automatic locking sealing connecting device for acidizing and fracturing operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217538643U true CN217538643U (en) | 2022-10-04 |
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ID=83422880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221731608.8U Active CN217538643U (en) | 2022-07-07 | 2022-07-07 | Automatic locking sealing connecting device for acidizing and fracturing operations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217538643U (en) |
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2022
- 2022-07-07 CN CN202221731608.8U patent/CN217538643U/en active Active
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