CN213175591U

CN213175591U - Free-moving cock device in natural gas well

Info

Publication number: CN213175591U
Application number: CN202020156487.3U
Authority: CN
Inventors: 赵国栋; 韦琴
Original assignee: Chengdu Jiaguangzhi Technology Co ltd
Current assignee: Chengdu Jiaguangzhi Technology Co ltd
Priority date: 2020-02-09
Filing date: 2020-02-09
Publication date: 2021-05-11
Anticipated expiration: 2030-02-09

Abstract

The utility model discloses a freely remove cock device in natural gas well, including inner rotor, upper flow way pipe, go up the encapsulation nut, go up the gasket, go up sealed cushion, sealed rubber disc, lower sealed cushion, gasket, lower encapsulation nut, down the runner pipe down. The inner rotor is positioned in the upper runner pipe or the lower runner pipe, and the side wall of the rotating cylinder of the inner rotor is provided with a through hole; the transmission shaft of the inner rotor can be connected with a motor and other transmission devices to drive the inner rotor to rotate; the sealing rubber disc is positioned in the middle of the upper flow channel pipe and the lower flow channel pipe, the upper sealing rubber pad and the lower sealing rubber pad are positioned on two sides of the sealing rubber disc, and the upper sealing nut, the lower sealing nut, the upper gasket and the lower gasket are used for fixing the rubber sheet and the rubber disc. The invention has compact and simple structure and good sealing performance, can be used in cooperation with transmission devices such as a motor and the like, and can be flexibly suitable for various gas well conditions.

Description

Free-moving cock device in natural gas well

Technical Field

The utility model belongs to the technical field of well logging and well control in the oil, gas field production process, concretely relates to freely remove cock device in natural gas well.

Background

Natural gas plays an important role in national economy as one of important energy sources. All countries around the world strive to increase the capacity to cope with the demand for natural gas resources. And the liquid accumulation in the gas well can seriously affect the productivity of the gas well. Especially in the middle and later period of gas well production, the problem of liquid accumulation is particularly prominent. In order to improve the recovery ratio of the water-bearing gas well, measures must be taken periodically to drain the gas well so as to ensure the normal operation of gas production.

A mechanical plunger gas lift drainage gas recovery mode is used as a mechanical method, a gas-liquid interface is separated in a plunger sealing mode, and accumulated liquid above a plunger is lifted to a wellhead by utilizing the self energy in a gas well. The main disadvantages are intermittent, mechanical, and undetectable, which can affect continuous production operations. In another mechanical method, a leather bag is adopted for sealing, a flow channel switch is arranged in the leather bag, the switch is closed, underground pressure is filled, the leather bag is opened, and the leather bag and the inner wall of the well form sealing. However, the expansion and contraction of the leather bag with the structure are not easy to control, and the leather bag is very easy to tear in the using process.

Disclosure of Invention

In order to solve the above problem, the utility model provides a concrete technical scheme who adopts provides a free removal cock device in natural gas well, from the top down includes inner rotor, up-flow channel pipe, goes up encapsulation nut, goes up the gasket, goes up sealed cushion, sealed rubber plate, seals cushion, gasket, lower packing nut down, down the runner pipe down. The method is characterized in that: the upper runner pipe and the lower runner pipe are connected through threads; the inner rotor consists of a rotating cylinder and a transmission shaft, the rotating cylinder of the inner rotor is positioned in the runner pipe, and the rotating shaft of the inner rotor extends upwards out of the upper runner pipe; the sealing rubber disc is positioned in the middle of the upper runner pipe and the lower runner pipe; the upper gasket, the upper sealing rubber gasket, the lower gasket, the upper packaging nut and the lower packaging nut are used for fixing the sealing rubber disc.

In the free-moving plug device in the natural gas well, the side wall of the rotary cylinder of the inner rotor is provided with a plurality of through holes.

In the freely movable plug device in the natural gas well, the positions of the rotary cylinders of the inner rotor are two, and one is that the rotary cylinders of the inner rotor are positioned in the upper runner pipe and form a plug valve with the upper runner pipe; the other is that the rotating cylinder of the inner rotor is positioned in the lower runner pipe and forms a plug valve with the lower runner pipe.

In the free movement plug device in the natural gas well, a transmission shaft of the inner rotor is driven by a motor to rotate; and an O-shaped ring is arranged on a transmission rotating shaft of the inner rotor to improve the sealing property between the inner rotor and the upper runner pipe or the lower runner pipe.

In the free-moving plug device in the natural gas well, the side wall of the upper runner pipe is provided with a plurality of through holes.

In the free movement plug device in the natural gas well, the upper packaging nut and the lower packaging nut play roles in fixing the sealing rubber disc, the upper sealing rubber pad and the lower sealing rubber pad.

In the freely-moving plug device in the natural gas well, the upper gasket and the lower gasket are annular thin sheets and made of hard metal materials, so that the effect of auxiliary sealing is achieved.

In the freely-moving plug device in the natural gas well, the upper sealing rubber mat and the lower sealing rubber mat are annular soft sheets and play a role in auxiliary sealing.

In the freely movable plug device in the natural gas well, the sealing rubber disc is made of wear-resistant and oil-resistant rubber and is in contact with the inner wall of the natural gas well pipe to play a sealing role.

In the free-moving plug device in the natural gas well, the side wall of the lower runner pipe is provided with a plurality of through holes.

The utility model discloses a freely remove cock device in natural gas well, its interior rotor can rotate under transmission's such as motors drive, when the through-hole of inner rotor and the through-hole intercommunication of up-flow pipe or down-flow pipe, realizes switching on of runner. When the through hole of the inner rotor is not communicated with the through hole of the runner pipe, the runner is closed. The device realizes the on-off of the gas and liquid flow passages in the well by the control method, and achieves the purposes of gas lift drainage and free up-and-down movement of the device. The utility model discloses compact structure is simple, and sealing performance is good, can use with transmission such as motors cooperation, can be applicable to various gas well conditions in a flexible way. The utility model discloses it is used for the logging operation to do to articulate various interior detecting instrument of well.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is an external structural view of the present invention.

Fig. 3 is a schematic structural view of an inner rotor.

Wherein, 1, an inner rotor; 2. an upper runner pipe; 3. an upper packing nut; 4. an upper gasket; 5. an upper sealing rubber gasket; 6. sealing the rubber disc; 7. a lower sealing rubber pad; 8. a lower gasket; 9. a lower packing nut; 10. a lower runner pipe; 1a, a rotating drum; 1b, a transmission shaft.

Detailed Description

The utility model provides a freely remove cock device in natural gas well, its compact structure, sealing performance is good, can be through transmission's such as motors drive, upward movement under highly compressed promotion in the natural gas well. When the plug valve is opened, the upper and lower flow passage pipes are communicated, and the device can move downwards in the well under the action of the gravity of the device. The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, a free-running cock device in a natural gas well comprises a body 1, an inner rotor; 2. an upper runner pipe; 3. an upper packing nut; 4. an upper gasket; 5. an upper sealing rubber gasket; 6. sealing the rubber disc; 7. a lower sealing rubber pad; 8. a lower gasket; 9. a lower packing nut; 10. a lower runner pipe; 1a, a rotating drum; 1b, a transmission shaft.

Example 1 is described in detail below.

1. The upper flow path pipe 2 and the lower flow path pipe 10 are connected by a screw thread to form a flow path.

2. The sealing rubber plate 6 is fixed in the middle of the upper runner pipe 2 and the lower runner pipe 10, and the upper sealing rubber pad 5 and the lower sealing rubber pad 7 are respectively positioned above and below the sealing rubber plate 6. The sealing rubber disc 6, the upper sealing rubber pad 5 and the lower sealing rubber pad 7 can form close contact with the inner wall of the natural gas well pipe under the combined action, and the sealing effect is achieved. The upper gasket 4, the lower gasket 8, the upper packing nut 3 and the lower packing nut 9 play a role in fixing the sealing rubber disc and the upper and lower sealing rubber pads.

3. The rotating cylinder 1a of the inner rotor 1 is arranged in the upper runner pipe 2, and the transmission shaft 1b above the inner rotor 1 extends out of the upper runner pipe 2 and can be connected with a transmission device such as a motor.

4. The inner rotor 1 rotates by a fixed angle under the driving of a transmission device such as a motor, so that the through hole of the rotating cylinder 1a of the inner rotor 1 is communicated with the through hole of the upper runner pipe 2, and the runners above and below the sealing rubber disc 6 are communicated to form a runner. The plug means may be moved downhole under its own weight.

5. The inner rotor 1 rotates at a fixed angle under the traction of a transmission device such as a motor, so that the through hole of the rotating cylinder 1a of the inner rotor 1 is not communicated with the through hole of the upper runner pipe 2, and the runners above and below the sealing rubber disc 6 are closed. The plug cock device moves up to the well head under the action of the pressure difference between the upper part and the lower part of the sealing rubber disc in the well, and lifts accumulated liquid above the sealing rubber disc 6 to the well head.

Example 2 is specifically carried out as follows.

3. The rotating cylinder 1a of the inner rotor 1 is arranged in the lower runner pipe 10, and the transmission shaft 1b above the inner rotor 1 extends out of the upper runner pipe 2 and can be connected with a transmission device such as a motor.

4. The inner rotor 1 rotates at a fixed angle under the traction of a transmission device such as a motor, so that the through hole of the rotating cylinder 1a of the inner rotor 1 is communicated with the through hole of the lower runner pipe 10, and the runners above and below the sealing rubber disc 6 are communicated to form a runner. The plug means may be moved downhole under its own weight.

5. The inner rotor 1 rotates at a fixed angle under the traction of a transmission device such as a motor, so that the through hole of the rotary cylinder 1a of the inner rotor 1 is not communicated with the through hole of the lower runner pipe 10, and the runners above and below the sealing rubber disc 6 are closed. The plug cock device moves up to the well head under the action of the pressure difference between the upper part and the lower part of the sealing rubber disc in the well, and lifts accumulated liquid above the sealing rubber disc 6 to the well head.

The present invention is not limited to the above best mode, and any person can make structural changes under the teaching of the present invention, all with the present invention having the same or similar technical solution, all fall within the protection scope of the present invention.

Claims

1. The utility model provides a free removal cock device in natural gas well, from the top down includes inner rotor, up-flow channel pipe, goes up packing nut, goes up the gasket, goes up sealed cushion, sealed rubber plate, seals cushion down, gasket, packing nut down, down the runner pipe, its characterized in that: the upper runner pipe and the lower runner pipe are connected through threads; the inner rotor consists of a rotating cylinder and a transmission shaft, the rotating cylinder of the inner rotor is positioned in the runner pipe, and the rotating shaft of the inner rotor extends upwards out of the upper runner pipe; the sealing rubber disc is positioned in the middle of the upper runner pipe and the lower runner pipe; the upper gasket, the upper sealing rubber gasket, the lower gasket, the upper packaging nut and the lower packaging nut are used for fixing the sealing rubber disc.

2. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the side wall of the rotary drum of the inner rotor is provided with a plurality of through holes.

3. A free running plug assembly in a natural gas well according to claim 2, wherein: the positions of the rotary cylinders of the inner rotor are two, one is that the rotary cylinders of the inner rotor are positioned in the upper runner pipe and form a plug valve with the upper runner pipe; the other is that the rotating cylinder of the inner rotor is positioned in the lower runner pipe and forms a plug valve with the lower runner pipe.

4. A free running plug assembly in a natural gas well according to claim 2, wherein: the transmission shaft of the inner rotor is driven by a motor to rotate; an O-shaped ring is arranged on a transmission rotating shaft of the inner rotor to improve the sealing performance between the inner rotor and the upper runner pipe or the lower runner pipe.

5. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the side wall of the upper runner pipe is provided with a plurality of through holes.

6. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the upper packaging nut and the lower packaging nut play a role in fixing the sealing rubber disc, the upper sealing rubber pad and the lower sealing rubber pad.

7. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the upper gasket and the lower gasket are annular sheets and made of hard metal materials, and have the function of auxiliary sealing.

8. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the upper sealing rubber gasket and the lower sealing rubber gasket are annular soft sheets and play a role in auxiliary sealing.

9. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the sealing rubber disc is made of wear-resistant and oil-resistant rubber and is in contact with the inner wall of the natural gas well pipe to play a sealing role.

10. A free running plug assembly in a natural gas well as claimed in claim 1, wherein: the side wall of the lower runner pipe is provided with a plurality of through holes.