WO2024007462A1

WO2024007462A1 - Isolation packer device of novel sealing structure for heavy oil thermal recovery well

Info

Publication number: WO2024007462A1
Application number: PCT/CN2022/123150
Authority: WO
Inventors: 陈树人; 陈芙蓉
Original assignee: 昊星宇(天津)科技发展有限公司
Priority date: 2022-07-06
Filing date: 2022-09-30
Publication date: 2024-01-11

Abstract

An isolation packer device of a sealing structure for a heavy oil thermal recovery well, comprising an enlarged bottom plate (7), an oil pipe bracket (5), and an oil-gas well casing pipe (9). The oil pipe bracket is engaged at the top of the enlarged bottom plate, the oil-gas well casing pipe is mounted at the bottom of the enlarged bottom plate by means of bolts, a sealing ring (10) is sleeved in the oil-gas well casing pipe, and a limiting sleeve (2) is welded to the top of the oil pipe bracket. The isolation packer device has an obvious anti-leakage effect, can erect an oil pipe, is convenient to mount and dismount, and is suitable for being widely popularized and used.

Description

A new sealing structure isolation packer device for heavy oil thermal recovery wells

Technical field

The utility model relates to the technical field of petroleum extraction, and in particular to an isolation packer device with a new sealing structure used for heavy oil thermal recovery wells.

Background technique

Heavy oil mining refers to the act of digging and extracting oil where there is oil storage. In the process of oil extraction, oil and gas flow from the reservoir to the bottom of the well, and then rise from the bottom of the well to the wellhead. Oil extraction requires the use of to the isolation packer unit.

The traditional isolation packer device has the following shortcomings: 1. The leakage prevention effect of the isolation packer device is not obvious; 2. The oil pipe cannot be erected, and it is inconvenient to install and disassemble. To this end, we propose a new sealing structure isolation packer device for heavy oil thermal recovery wells.

Utility model content

The main purpose of this utility model is to provide an isolation packer device with a new sealing structure for heavy oil thermal recovery wells, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

An isolation packer device with a new sealing structure for heavy oil thermal recovery wells, including an enlarged bottom plate, a tubing bracket and an oil and gas well casing. A tubing bracket is clamped on the top of the enlarged bottom plate. The enlarged bottom plate The bottom of the oil and gas well casing is installed with bolts, and the inner sleeve of the oil and gas well casing is provided with a sealing ring. The top of the oil pipe bracket is welded with a limited sleeve.

Further, bolt clamping plates are welded to both ends of the bottom of the oil pipe bracket, and the bolt clamping plates are fixed to the enlarged bottom plate through mounting bolts, and a separation sleeve is provided in the oil pipe bracket.

Furthermore, one side of the limiting pipe sleeve is provided with a threaded sleeve hole and a locking bolt is installed in the threaded sleeve hole. Loosen the locking bolt in the threaded sleeve hole to facilitate adjusting the oil pipe up and down and extending the oil pipe into the oil well. Different depths are available to meet different usage needs.

Further, an oil pipe is provided in the limiting pipe sleeve and the oil pipe runs through the separation sleeve and the sealing ring. The sealing ring is made of TPU material to improve the sealing effect between the oil and gas well casing and the oil pipe, prevent leakage, and has high elasticity. Resistant to acid and alkali corrosion, durable.

Further, the sealing ring is made of TPU material.

Compared with the existing technology, the utility model has the following beneficial effects:

1. This utility model is an isolation packer device with a new sealing structure for heavy oil thermal recovery wells. Unscrew the locking bolt in the threaded sleeve hole to facilitate the up and down adjustment of the oil pipe and extend the oil pipe into different positions in the oil well. depth to meet different usage needs. The bolt clamping plate and mounting bolts are used to easily fix the oil pipe bracket and facilitate installation and removal.

2. This utility model is an isolation packer device with a new sealing structure for heavy oil thermal recovery wells. The oil pipe bracket is used to stabilize the erection of the oil pipe, and the sealing ring is made of TPU material to improve the oil and gas well casing. The sealing effect between the pipe and the oil pipe prevents leakage, and is highly elastic, resistant to acid and alkali corrosion, and durable. The use of separation sleeves further achieves a sealing effect, isolates the inside and outside, and has a significant protective effect.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an isolation packer device with a new sealing structure used in heavy oil thermal recovery wells according to the present invention.

Figure 2 is a schematic diagram of the sealing ring structure of an isolation packer device with a new sealing structure used in heavy oil thermal recovery wells according to the present invention.

In the picture: 1. Oil pipe; 2. Limit pipe sleeve; 3. Threaded sleeve; 4. Locking bolt; 5. Oil pipe bracket; 6. Installation bolt; 7. Enlarged base plate; 8. Separation sleeve; 9. Oil and gas Well casing; 10. Seal ring; 11. Bolt clamping plate.

Detailed ways

In order to make it easy to understand the technical means, creative features, objectives and effects of the present utility model, the present utility model will be further elaborated below in conjunction with specific implementation modes.

As shown in Figure 1-2, a new sealing structure isolation packer device for heavy oil thermal recovery wells includes an expanded floor 7, a tubing bracket 5 and an oil and gas well casing 9. The expanded floor 7 The oil pipe bracket 5 is clamped on the top. The oil and gas well casing 9 is installed at the bottom of the enlarged bottom plate 7 through bolts, and the oil and gas well casing 9 is equipped with a sealing ring 10. The top of the oil pipe bracket 5 is welded with a limited position. Pipe sleeve 2.

Among them, bolt clamping plates 11 are welded at both ends of the bottom of the oil pipe bracket 5. The bolt clamping plates 11 are fixed on the enlarged bottom plate 7 through mounting bolts 6. A separation sleeve 8 is provided inside the oil pipe bracket 5. .

In this embodiment, as shown in Figure 1, the bolt clamping plate 11 and the mounting bolts 6 are used to facilitate the fixation of the oil pipe bracket 5 and facilitate installation and disassembly.

Wherein, one side of the limiting pipe sleeve 2 is provided with a threaded sleeve hole 3 and a locking bolt 4 is installed in the threaded sleeve hole 3 .

In this embodiment, as shown in Figure 1, loosen the locking bolt 4 in the threaded hole 3 to facilitate the up and down adjustment of the oil pipe 1 and extend the oil pipe 1 into different depths in the oil well to meet different usage requirements.

Wherein, the limiting pipe sleeve 2 is provided with an oil pipe 1, and the oil pipe 1 penetrates the separation sleeve 8 and the sealing ring 10.

Wherein, the sealing ring 10 is made of TPU material.

In this embodiment, as shown in Figure 2, the sealing ring 10 is made of TPU material to improve the sealing effect between the oil and gas well casing 9 and the oil pipe 1, prevent leakage, and has high elasticity, acid and alkali corrosion resistance, and durability.

It should be noted that this utility model is an isolation packer device with a new sealing structure for heavy oil thermal recovery wells. During operation, the locking bolt 4 in the threaded sleeve hole 3 is loosened to facilitate the up and down adjustment of the oil pipe 1 , extend the oil pipe 1 into the oil well to different depths to meet different usage requirements. Use the bolt clamping plate 11 and the mounting bolts 6 to fix the oil pipe bracket 5 for easy installation and disassembly. Use the oil pipe bracket 5 to lift the oil pipe 1 To stabilize the erection, the sealing ring 10 is made of TPU material to improve the sealing effect between the oil and gas well casing 9 and the oil pipe 1, prevent leakage, and has high elasticity, acid and alkali corrosion resistance, and durability. The separation sleeve 8 is further used. It has a sealing effect, isolates the inside and outside, and has a significant protective effect.

The basic principles and main features of the present utility model and the advantages of the present utility model are shown and described above. Those skilled in the industry should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model can be There will also be various changes and improvements in the new model, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the present utility model is defined by the appended claims and their equivalents.

Claims

An isolation packer device with a new sealing structure for heavy oil thermal recovery wells, including an enlarged bottom plate (7), a tubing bracket (5) and an oil and gas well casing (9), characterized in that: the enlarged bottom plate The oil pipe bracket (5) is clamped on the top of (7), and the oil and gas well casing (9) is installed at the bottom of the enlarged bottom plate (7) through bolts, and the oil and gas well casing (9) is equipped with a sealing ring (9). 10), a limited pipe sleeve (2) is welded to the top of the oil pipe bracket (5).
A new sealing structure isolation packer device for heavy oil thermal recovery wells according to claim 1, characterized in that: bolt clamping plates (5) are welded to both ends of the bottom of the oil pipe bracket (5) 11), the bolt clamping plate (11) is fixed on the enlarged base plate (7) through mounting bolts (6), and a separation sleeve (8) is provided in the oil pipe bracket (5).
An isolation packer device with a new sealing structure for heavy oil thermal recovery wells according to claim 1, characterized in that: one side of the limiting pipe sleeve (2) is provided with a threaded sleeve hole (3 ) and the locking bolt (4) is installed in the threaded hole (3).
A new sealing structure isolation packer device for heavy oil thermal recovery wells according to claim 1, characterized in that: an oil pipe (1) is provided in the limiting pipe sleeve (2) and the oil pipe ( 1) Pass through the separation sleeve (8) and sealing ring (10).
An isolation packer device with a new sealing structure for heavy oil thermal recovery wells according to claim 1, characterized in that: the sealing ring (10) is made of TPU material.