CN217206384U

CN217206384U - Blowout control device for oil well four-way bypass damage working condition

Info

Publication number: CN217206384U
Application number: CN202220518054.7U
Authority: CN
Inventors: 刘金明; 孙宝京; 乔永生; 樊毓萱; 张文华; 孙亮; 刘娜娜; 吴修华
Original assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-08-16
Anticipated expiration: 2032-03-09

Abstract

A damaged blowout control device of a four-way bypass connector of a wellhead comprises an upper support rod, a lower support rod, a connecting seat and a flow guide pipe, wherein the upper support rod is connected to the upper part of the connecting seat, the lower support rod is connected to the lower part of the connecting seat, and a transverse sealing mechanism is arranged on the connecting seat; the transverse sealing mechanism comprises a leather cup adjusting cylinder, the leather cup adjusting cylinder is connected to the connecting seat, a guide pipe is sleeved in the leather cup adjusting cylinder, the two ends of the guide pipe extend out of the leather cup adjusting cylinder, one end of the guide pipe is connected with a pull rod, a sealing leather cup is sleeved between the pull rod and the leather cup adjusting cylinder on the guide pipe, and the other end of the guide pipe is connected with an adjusting nut. The utility model discloses an advance and retreat of pull rod makes the sealing leather cup insert in the cross by-pass mouth and the extrusion expansion, accomplishes robbing of damaging special operating mode to the cross by-pass and spouts, can control the well head overflow fast effectively and rush to spout, can accomplish the sealed of bypass pore, can resume again and establish the passageway.

Description

Blowout control device for oil well four-way bypass damage working condition

Technical Field

The utility model relates to a device that is used for rush-spraying when the oil well takes place the blowout and causes four-way bypass interface fracture, in time control well head overflow with rush-spraying to resume the well head, reduce environmental destruction and economic loss that the blowout brought. Belongs to the technical field of oil field emergency well control equipment.

Background

The blowout rescue technology is an important technical support for implementing oil field well control emergency rescue, the oil field is matched with equipment through technical innovation, certain emergency rescue capacity is achieved, the serialized emergency blowout rescue equipment and tools are complete, and possible blowout events in operation construction processes such as blowout preventer flashboard failure and four-way flange puncture can be handled in an emergency mode. But the emergency disposal for the blowout event under the special working condition still has the defects, for example, the blowout event under the special working condition of the blowout occurs when the four-way bypass of the wellhead is damaged, and no quick and effective emergency disposal equipment is provided.

At present, the special working condition treatment of blowout caused by breakage of a four-way bypass connector of an oil well device has two modes: firstly, the organization rush repair personnel carry out multi-turn rush repair by using the existing rush repair equipment, the consumed time is long, and the damage risk is brought to the rush repair personnel; secondly, under the condition of poor blowout control degree, blowout rush repair cannot be implemented, and corresponding treatment measures can be taken only after the blowout potential is reduced or blowout is stopped, so that huge environmental pollution and property loss are brought.

When blowout occurs, the four-way bypass interface is broken, blowout cannot be performed through a conventional blowout rescue tool at present, and no effective emergency treatment exists, because the wellhead four-way bypass damages equipment for generating blowout, the damaged four-way bypass interface cannot be sealed quickly and timely, and the channel cannot be established, so that blowout rescue treatment can be performed on the broken special working condition of the four-way bypass.

Disclosure of Invention

The utility model discloses damage not enough of blowout technique existence when taking place the blowout to current oil field well head cross bypass, provide one kind can effectively deal with the oil well cross bypass that well head cross bypass damaged the well blowout fast and damage the blowout device that rush to spout that damages the operating mode.

The utility model discloses a device is spouted soon of oil well cross bypass damage operating mode adopts following technical scheme:

the device comprises an upper support rod, a lower support rod, a connecting seat and a guide pipe, wherein the upper support rod is connected to the upper part of the connecting seat, the lower support rod is connected to the lower part of the connecting seat, and a transverse sealing mechanism is arranged on the connecting seat; the transverse sealing mechanism comprises a leather cup adjusting cylinder, the leather cup adjusting cylinder is connected to the connecting seat, a guide pipe is sleeved in the leather cup adjusting cylinder, the two ends of the guide pipe extend out of the leather cup adjusting cylinder, one end of the guide pipe is connected with a pull rod, a sealing leather cup is sleeved between the pull rod and the leather cup adjusting cylinder on the guide pipe, and the other end of the guide pipe is connected with an adjusting nut.

A distance adjusting mechanism is arranged between the upper supporting rod and the connecting seat, and a longitudinal position adjusting mechanism is arranged between the lower supporting rod and the connecting seat. The distance adjusting mechanism comprises a transverse adjusting seat sleeved on the upper supporting rod, the lower part of the transverse adjusting seat is connected with a longitudinal adjusting seat, and the longitudinal adjusting seat is connected with the connecting seat. And a positioning screw is arranged on the transverse adjusting seat. So as to fix the position of the transverse adjusting seat on the upper supporting rod. The inner hole of the longitudinal adjusting seat is internally provided with an internal thread, the lower part of the transverse adjusting seat is provided with an external thread, and the longitudinal adjusting seat is connected with the transverse adjusting seat through a thread. The longitudinal position adjusting mechanism comprises a connecting rod and a pin shaft, the lower supporting rod is connected with the lower part of the connecting seat through the connecting rod, and the connecting rod is connected with the lower part of the connecting seat through the pin shaft. The longitudinal position adjustment of the lower supporting rod is realized through the connecting rod.

The leather cup adjusting cylinder is connected with an adjusting rod and a flow blocking cover, and the flow blocking cover plays a role in facilitating operation of the adjusting rod).

The pull rod is of a hollow taper head structure.

The guide pipe is provided with a guide key, and a guide groove matched with the guide key is arranged in an inner hole of the leather cup adjusting cylinder. Through the cooperation of guide key and guide way for the honeycomb duct removes in a leather cup regulation section of thick bamboo.

The flow guide pipe is connected with a ball valve and an output connector.

When the blowout control device is applied, the upper supporting rod and the lower supporting rod are respectively installed on the upper flange and the lower flange of the wellhead, and the sealing leather cup is adjusted to be aligned to the bypass port. The pull rod drives the sealing leather cup to be inserted into the bypass port of the four-way valve, then the pull rod retreats to drive the sealing leather cup to extrude and expand and tightly press the sealing leather cup on the inner wall of the bypass valve, the four-way valve is sealed, and the rush spray under special working conditions is realized.

The utility model discloses use the upper support rod and the bottom suspension fagging pole to fix at the well head, advance and retreat through the pull rod makes the sealed packing cup insert in the cross bypass mouth and the extrusion expansion, the completion damages the rush-spraying of special operating mode to the cross bypass, can control the well head overflow fast effectively and rush-spraying, when fracture of oil well cross bypass clamp head or bypass valve damage, when leading to the bypass to leak the condition that takes place the blowout, through the mode of reestablishing sealed passageway, can accomplish the sealed in bypass pore, can resume again and establish the passageway, do benefit to follow-up processing, thereby resume the well head, reduce environmental damage and economic loss that the blowout brought.

Drawings

FIG. 1 is the structural schematic diagram of the blowout control device of the oil well four-way bypass damage working condition of the utility model.

In the figure: 1. the adjustable hydraulic steering device comprises a bolt, 2 a nut, 3 an upper supporting rod, 4 a positioning screw, 5 a transverse adjusting seat, 6 a longitudinal adjusting seat, 7 a guide key, 8 a pull rod, 9 a bolt, 10 a sealing leather cup, 11 a lower supporting rod, 12 an adjusting nut, 13 a reducing joint, 14 a ball valve, 15 an output joint, 16 an adjusting rod, 17 a flow blocking cover, 18 a pin shaft, 19 a connecting rod, 20 a nut, 21 a leather cup adjusting cylinder, 22 a connecting seat, 23 a flow guide pipe and 24 a handle.

Detailed Description

Wellhead four-way bypass interface damage rush-spraying device, its function can seal the wellhead four-way bypass joint who damages at the emergent in-process of speedily carrying out rescue work of blowout, realizes that special operating mode blowout is emergent to rush-spraying.

As shown in fig. 1, the device includes an upper support bar 3, a lower support bar 11, a connection holder 22, and a guide pipe 23. The upper support rod 3 is connected to the upper part of the connecting seat 22, the lower support rod 11 is connected to the lower part of the connecting seat 22, and the connecting seat 22 is provided with a transverse sealing mechanism.

Go up bracing piece 3 and connect the upper portion at connecting seat 22, go up the cover and be equipped with horizontal adjustment seat 5 on bracing piece 3, be provided with set screw 4 on the horizontal adjustment seat 5. The transverse adjusting seat 5 is sleeved on the upper supporting rod 3 and can transversely move on the upper supporting rod 3, and after the position of the transverse adjusting seat 5 on the upper supporting rod 3 is adjusted, the positioning screw 4 is screwed down to be fixed. The lower part of the horizontal adjusting seat 5 is connected with a longitudinal adjusting seat 6, and the longitudinal adjusting seat 6 is connected with a connecting seat 22. That is, the upper support rod 3 is connected with the connecting seat 22 through the transverse adjusting seat 5 and the longitudinal adjusting seat 6. The structure of the longitudinal adjusting seat 6 can be the same as that of the transverse adjusting seat 5, and the longitudinal adjusting seat is sleeved on the lower part of the transverse adjusting seat 5 and fixed by screws after the position is adjusted. Or the inner hole of the longitudinal adjusting seat 6 is provided with an internal thread, the lower part of the transverse adjusting seat 5 is provided with an external thread, and the longitudinal adjusting seat 6 is connected with the transverse adjusting seat 5 through the threads. The position adjustment of the connecting seat 22 is realized through the transverse adjusting seat 5 and the longitudinal adjusting seat 6, so that a transverse sealing mechanism on the connecting seat 22 is positioned at a damaged position (a wellhead four-way bypass interface fracture position).

The lower support rod 11 is connected with the lower part of the connecting seat 22 through a connecting rod 19, the upper end of the connecting rod 19 is connected with the lower part of the connecting seat 22 through a pin shaft 18, and the lower end of the connecting rod 19 is provided with external threads and is connected with the lower support rod 11 through a nut 20. The longitudinal position adjustment of the lower support rod 11 is achieved by means of a connecting rod 19 and a nut 20, so that the lower support rod 11 can be mounted on the wellhead lower flange and support the adjustment seat 6.

The transverse sealing mechanism that sets up on connecting seat 22 includes that the leather cup adjusts a section of thick bamboo 21, and a leather cup is adjusted a section of thick bamboo 21 and is connected on connecting seat 22, and the honeycomb duct 23 is equipped with to the cover in the leather cup is adjusted a section of thick bamboo 21, is provided with guide key 7 on the honeycomb duct 23, is provided with the guide way in the hole of a section of thick bamboo 21 correspondingly is adjusted to the leather cup, through the cooperation of guide key 7 with the guide way for honeycomb duct 23 removes in a leather cup is adjusted a section of thick bamboo 21. The two ends of the guide pipe 23 extend out of the leather cup adjusting cylinder 21, one end of the guide pipe is connected with the pull rod 8, the pull rod 8 is of a hollow taper head structure, the sealing leather cup 10 is sleeved between the pull rod 8 and the leather cup adjusting cylinder 21 on the guide pipe 23, and the sealing leather cup 10 is axially positioned through the taper head on the pull rod 8. The other end of the draft tube 23 is provided with an external thread and is connected with an adjusting nut 12, the adjusting nut 12 leans against the end surface of the connecting seat 22, and the adjusting nut 12 is provided with a handle 24; this end is also connected in turn to a ball valve 14 and an output coupling 15 via a reducer coupling 13. The leather cup adjusting cylinder 21 is connected with an adjusting rod 16 and a flow blocking cover 17 (playing a flow blocking role and facilitating the operation of the adjusting rod). The draft tube 23 and the adjusting nut 12 form a spiral moving mechanism, the draft tube 23 can move in the leather cup adjusting cylinder 21 by rotating the adjusting nut 12, the pull rod 8 connected to the front end of the draft tube 23 moves together, and the sealing leather cup 10 can be inserted into a fracture part of a well head. The pull rod 8, the sealing leather cup 10, the leather cup adjusting cylinder 21 and the guide pipe 23 form a transverse sealing mechanism, and the handle 16, the adjusting nut 12 and the guide key 7 form a telescopic sealing mechanism.

The application process of the blowout control device is as follows.

Go up bracing piece 3 and install on the flange on the well head through bolt 1 and nut 2, lower support rod 11 passes through bolt 9 and installs on the flange under the well head, makes last bracing piece 3 and lower support rod 11 parallel with the by-pass mouth axis that will rush to spout, adjusts sealed leather cup 10 and aims at the by-pass mouth, realizes that whole rush to spout the device fixed on well head four-way bypass connects. Adjust the distance of going up bracing piece 3 and connecting seat 22 through vertical regulation seat 6, adjust the distance of lower support bar 11 and connecting seat 22 through swivel nut 20, come to carry out vertical regulation to the device. Leaving the ball valve 14 in an open state.

The adjusting nut 12 is rotated clockwise through the handle 24, the pull rod 8 drives the sealing leather cup 10 to be inserted into a four-way bypass opening, then the adjusting rod 16 is rotated clockwise and the adjusting nut 12 is rotated anticlockwise, the pull rod 8 retreats, the sealing leather cup 10 is driven to be extruded and expanded, the sealing leather cup is pressed on the inner wall of the four-way bypass, the four-way bypass is sealed, and the rush spray under special working conditions is realized. The ball valve 14 is closed to effect a seal that damages the bypass. When the ball valve 14 is opened during discharging, the liquid flow can be discharged through the reducer union 13, the ball valve 14 and the output union 15. The ball valve 14 arranged at the rear part of the draft tube 23 can play a role of a throttle valve, and the ball valve 14 can be used for controlling well closing and well killing after the front end is sealed.

Claims

1. The utility model provides a device is robbed and spouted in damage of well head cross bypass interface which characterized by: the device comprises an upper support rod, a lower support rod, a connecting seat and a guide pipe, wherein the upper support rod is connected to the upper part of the connecting seat, the lower support rod is connected to the lower part of the connecting seat, and a transverse sealing mechanism is arranged on the connecting seat; the transverse sealing mechanism comprises a leather cup adjusting cylinder, the leather cup adjusting cylinder is connected to the connecting seat, a guide pipe is sleeved in the leather cup adjusting cylinder, the two ends of the guide pipe extend out of the leather cup adjusting cylinder, one end of the guide pipe is connected with a pull rod, a sealing leather cup is sleeved between the pull rod and the leather cup adjusting cylinder on the guide pipe, and the other end of the guide pipe is connected with an adjusting nut.

2. The wellhead four-way bypass interface damage blowout control device as claimed in claim 1, which is characterized in that: a distance adjusting mechanism is arranged between the upper supporting rod and the connecting seat, and a longitudinal position adjusting mechanism is arranged between the lower supporting rod and the connecting seat.

3. The wellhead four-way bypass interface damage blowout control device as claimed in claim 2, which is characterized in that: the distance adjusting mechanism comprises a transverse adjusting seat sleeved on the upper supporting rod, the lower part of the transverse adjusting seat is connected with a longitudinal adjusting seat, and the longitudinal adjusting seat is connected with the connecting seat.

4. The wellhead four-way bypass interface damage blowout control device as claimed in claim 3, which is characterized in that: and a positioning screw is arranged on the transverse adjusting seat.

5. The wellhead four-way bypass interface damage blowout control device as claimed in claim 3, which is characterized in that: the inner hole of the longitudinal adjusting seat is internally provided with an internal thread, the lower part of the transverse adjusting seat is provided with an external thread, and the longitudinal adjusting seat is connected with the transverse adjusting seat through a thread.

6. The wellhead four-way bypass interface damage blowout control device as claimed in claim 2, which is characterized in that: the longitudinal position adjusting mechanism comprises a connecting rod and a pin shaft, and the connecting rod is connected to the lower portion of the connecting seat through the pin shaft.

7. The wellhead four-way bypass interface damage blowout control device as claimed in claim 1, which is characterized in that: the leather cup adjusting cylinder is connected with an adjusting rod and a flow blocking cover.

8. The wellhead four-way bypass interface damage blowout control device as claimed in claim 1, which is characterized in that: the pull rod is of a hollow taper head structure.

9. The wellhead four-way bypass interface damage blowout control device as claimed in claim 1, which is characterized in that: the guide pipe is provided with a guide key, and a guide groove matched with the guide key is arranged in an inner hole of the leather cup adjusting cylinder.

10. The wellhead four-way bypass interface damage blowout control device as claimed in claim 1, which is characterized in that: the flow guide pipe is connected with a ball valve and an output connector.