CN210888879U

CN210888879U - Oil drainage device for thermal production well

Info

Publication number: CN210888879U
Application number: CN201921610401.3U
Authority: CN
Inventors: 杨宇尧; 刘勇; 尹海; 刘建新; 肖鲜东; 季天星; 王建民; 骆向杰
Original assignee: Karamay Ennengsheng Petroleum Science & Technology Co ltd
Current assignee: Karamay Ennengsheng Petroleum Science & Technology Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-30
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to a thermal production well bleeder, including the inner tube, there is the outer tube through threaded connection on the outer wall of inner tube, keeps off the ring under having through threaded connection in the bottom mouth of outer tube, is equipped with in the cavity between outer tube and the inner tube and leans on the sealed ring that keeps off on the inner tube outer wall, is equipped with inner tube draining hole on the sealed inner tube outer wall that keeps off the ring top, be equipped with interior high temperature seal circle and outer high temperature seal circle on the inner wall that keeps off ring bottom mouth and the outer wall respectively, the below of interior high temperature seal circle is equipped with the pressure cap of being connected through screw thread and sealed fender ring, is equipped with outer tube pressure releasing. The utility model discloses a thermal production well bleeder structural design is reasonable, and when the workover need carry the tubular column, suppress in the oil pipe and press, pressure passed the interior outer tube annular space from the inner tube pressure relief hole when oil pipe suppressed and presses, sealed fender ring upper end atress, sealed fender ring, outer high temperature sealing member, interior high temperature sealing member, the whole downstream of pressure cap cut off behind the shear pin and are kept off by the fender ring down, and outer tube pressure relief hole is opened, forms the draining passageway.

Description

Oil drainage device for thermal production well

Technical Field

The utility model relates to a thermal recovery well bleeder.

Background

In the well repairing process of an oil well, the oil pipe is subjected to conventional operation, crude oil is fully adhered to the inside and outside of the oil pipe and can be brought to the ground, particularly thick oil, the viscosity of the crude oil is high, the adhesive force is large, the oil pipe column is fully adhered with the crude oil, when the oil pipe is placed on the ground, the crude oil can drip on the ground, the treatment difficulty is large, and the environment is polluted. At present, crude oil in a well can not fall to the ground under the requirement of environmental protection, so that an oil drainage device for a thermal production well is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a thermal recovery well bleeder.

The utility model discloses a thermal production well bleeder, including the inner tube, there is the outer tube through threaded connection on the outer wall of inner tube, keeps off the ring under threaded connection in the bottom mouth of outer tube, is equipped with in the cavity between outer tube and the inner tube and leans on the sealed ring that keeps off on the inner tube outer wall, is equipped with inner tube draining hole on the sealed inner tube outer wall that keeps off the ring top, is equipped with the shear pin on the outer tube that keeps off the ring outside sealed, and the inner of shear pin is fixed on the outer wall that keeps off the ring sealed, be equipped with interior high temperature seal circle and outer high temperature seal circle on the inner wall that keeps off ring bottom mouth sealed and the outer wall respectively, and the below of interior high temperature seal circle is equipped with the pressure cap of being.

The utility model discloses a thermal recovery well bleeder, the junction of outer tube and inner tube is sealed through last high temperature seal circle, and the top port inner wall of outer tube supports to lean on the outer wall at last high temperature seal circle.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a thermal production well bleeder structural design is reasonable, and when the workover need carry the tubular column, suppress in the oil pipe and press, pressure passed the interior outer tube annular space from the inner tube pressure relief hole when oil pipe suppressed and presses, sealed fender ring upper end atress, sealed fender ring, outer high temperature sealing member, interior high temperature sealing member, the whole downstream of pressure cap cut off behind the shear pin and are kept off by the fender ring down, and outer tube pressure relief hole is opened, forms the draining passageway.

Drawings

Fig. 1 is a schematic structural view of an oil drainer for a thermal production well according to an embodiment of the present invention.

In the figure:

1. an inner tube; 2. an outer tube; 3. a lower baffle ring; 4. a sealing baffle ring; 5. an inner pipe oil drainage hole; 6. shearing the nails; 7. an inner high-temperature sealing ring; 8. an outer high temperature seal ring; 9. pressing the cap; 10. an outer tube pressure relief hole; 11. and an upper high-temperature sealing ring.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1, a thermal production well bleeder, including inner tube 1, there is outer tube 2 through threaded connection on the outer wall of inner tube 1, have lower fender ring 3 through threaded connection in the bottom mouth of outer tube 2, be equipped with in the cavity between outer tube 2 and the inner tube 1 and lean on the sealed fender ring 4 that leans on the inner tube outer wall, be equipped with inner tube draining hole 5 on the outer wall of inner tube 1 above sealed fender ring 4, be equipped with shear pin 6 on the outer tube 2 in the sealed fender ring 4 outside, the inner of shear pin 6 is fixed on the outer wall bottom of sealed fender ring 4, be equipped with interior high temperature seal circle 7 and outer high temperature seal circle 8 on the inner wall of sealed fender ring 4 mouth and the outer wall respectively, the below of interior high temperature seal circle 7 is equipped with the pressure cap 9 of being connected with sealed fender ring 4 through the screw thread, is equipped.

The utility model discloses a thermal production well bleeder, outer tube 2 is sealed through last high temperature seal circle 11 with the junction of inner tube 1, and the top mouth inner wall of outer tube 2 supports and leans on the outer wall at last high temperature seal circle 11.

The utility model discloses a thermal production well bleeder structural design is reasonable, and when the workover need carry the tubular column, suppress in the oil pipe and press, pressure passed the interior outer tube annular space from the inner tube pressure relief hole when oil pipe suppressed and presses, sealed fender ring upper end atress, sealed fender ring, outer high temperature sealing member, interior high temperature sealing member, the whole downstream of pressure cap cut off behind the shear pin and are kept off by the fender ring down, and outer tube pressure relief hole is opened, forms the draining passageway.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a thermal production well bleeder, includes inner tube (1), its characterized in that: the outer wall of the inner pipe (1) is connected with an outer pipe (2) through threads, a lower baffle ring (3) is connected in a bottom port of the outer pipe (2) through threads, a sealing baffle ring (4) which is abutted against the outer wall of the inner pipe (1) is arranged in a cavity between the outer pipe (2) and the inner pipe (1), an inner pipe oil drainage hole (5) is arranged on the outer wall of the inner pipe (1) above the sealing baffle ring (4), a shear pin (6) is arranged on the outer pipe (2) at the outer side of the sealing baffle ring (4), the inner end of the shear pin (6) is fixed on the outer wall of the sealing baffle ring (, the inner wall and the outer wall of the bottom end opening of the sealing retaining ring (4) are respectively provided with an inner high-temperature sealing ring (7) and an outer high-temperature sealing ring (8), a pressing cap (9) connected with the sealing retaining ring (4) through threads is arranged below the inner high-temperature sealing ring (7), and an outer tube pressure relief hole (10) is formed in the outer tube (2) on the outer side of the pressing cap (9).

2. The thermal well drain of claim 1, wherein: the joint of the outer pipe (2) and the inner pipe (1) is sealed through an upper high-temperature sealing ring (11), and the inner wall of the top port of the outer pipe (2) abuts against the outer wall of the upper high-temperature sealing ring (11).