CN213205651U

CN213205651U - Oil is flowmeter in pit based on distributed optical fiber device

Info

Publication number: CN213205651U
Application number: CN202022235819.XU
Authority: CN
Inventors: 刘涛畴
Original assignee: Tianjin Fangzhou Baiwei Energy Technology Co ltd
Current assignee: Tianjin Fangzhou Baiwei Energy Technology Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-05-14
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a petroleum flowmeter in pit based on distributed optical fiber device relates to petroleum flowmeter in pit technical field. The utility model provides an oil is flowmeter in pit based on distributing type optical fiber device, includes the sleeve pipe in the pit, the sleeve pipe inner wall in the pit is provided with the tubular column in the pit, tubular column inner wall one side in the pit is provided with optic fibre in the pit, optic fibre outer wall in the pit is provided with the optical fiber protector, optic fibre other end fixedly connected with connecting rod in the pit, connecting rod other end fixedly connected with connecting device, connecting device other end fixedly connected with flowmeter, flowmeter top fixedly connected with calculator. The utility model discloses a setting of optical fiber protector, when the optical fiber device put into the oil field well through the tubular column in the pit, the optical fiber protector can effectually protect the optical fiber device, makes the more accuracy of optical fiber device transmission data in the oil field well.

Description

Oil is flowmeter in pit based on distributed optical fiber device

Technical Field

The utility model relates to a flowmeter technical field in the oil well specifically is a flowmeter in the oil well based on distributed optical fiber device.

Background

Generally, an oil-gas well is only intensively metered at a ground wellhead or an oil production plant during production, the flow is only generally monitored, the underground produced liquid and gas can only be uniformly recorded on the ground, the characteristics of the underground actual multiphase flow, the temperature, the pressure and the like cannot be monitored on line, the underground multi-layer combined production is particularly related to, and the monitoring cannot be carried out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a petroleum flowmeter in pit based on distributed optical fiber device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an oil is flowmeter in pit based on distributing type optical fiber device, includes the sleeve pipe in the pit, the sleeve pipe inner wall in the pit is provided with the tubular column in the pit, tubular column one side inner wall in the pit is provided with optic fibre in the pit, optic fibre outer wall in the pit is provided with the optical fiber protector, optic fibre other end fixedly connected with connecting rod in the pit, connecting rod other end fixedly connected with connecting device, connecting device other end fixedly connected with flowmeter, flowmeter top fixedly connected with calculator.

Preferably, connecting device contains the connecting piece, connecting piece one end is provided with the external screw thread connecting piece, the connecting rod inner wall is provided with the internal thread, internal thread and external screw thread connecting piece phase-match.

Preferably, a first sealing ring and a second sealing ring are respectively arranged between the external thread connecting piece and the connecting piece.

Preferably, the other end of the connecting piece is fixedly connected with a threaded connecting rod, and the threaded connecting rod is connected with the connecting piece body through a thread and a thread.

Preferably, the equal fixedly connected with nut in connecting piece body both ends, be provided with the rand between nut inner wall and the connecting piece body, be provided with the bent angle in the rand, bent angle one end fixedly connected with clamp ring, be provided with the third sealing washer between clamp ring one end and the connecting piece body inner wall, the connecting piece body intermediate position is provided with connecting portion.

Preferably, nut one end fixedly connected with link, the nut other end fixedly connected with interface.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this oil is flowmeter in pit based on distributed optical fiber device, through optical fiber protector's setting, when optical fiber device put into the oil field well through the tubular column in the pit, optical fiber protector can effectually protect optical fiber device, makes optical fiber device transmission data more accurate in the oil field well.

(2) This oil flowmeter in pit based on distributed optical fiber device, through connecting device's setting, the nut and the clamping ring that set up on the connecting piece body guarantee sealed effect to the connecting piece body.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the connection device of the present invention;

fig. 3 is a schematic structural diagram of the connection device of the present invention.

In the figure: 1. a downhole casing; 2. a downhole tubular string; 3. a downhole optical fiber; 4. an optical fiber protector; 5. a connecting rod; 6. a connecting device; 7. a flow meter; 8. a calculator; 9. an external threaded connector; 10. a first seal ring; 11. a connecting member; 12. a second seal ring; 13. a threaded connecting rod; 14. a thread; 15. bending the corner; 16. a collar; 17. a compression ring; 18. a third seal ring; 19. a connector body; 20. a connecting end; 21. a nut; 22. an interface; 23. a connecting portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1-3, the utility model provides a technical solution: the utility model provides a flowmeter in petroleum well based on distributing type optical fiber device, includes casing pipe 1 in the pit, casing pipe 1 inner wall in the pit is provided with tubular column 2 in the pit, 2 one side inner walls in tubular column in the pit are provided with optic fibre 3 in the pit, 3 outer walls in the pit optic fibre are provided with

optical fiber protector

4, 3 other end fixedly connected with connecting rod 5 in the pit, 5 other end fixedly connected with connecting

rod

6, 6 other end fixedly connected with flowmeters 7 of connecting device, 7 top fixedly connected with calculators 8 of flowmeter.

As shown in fig. 3, the connecting device 6 comprises a connecting piece 11, an external thread connecting piece 9 is arranged at one end of the connecting piece 11, an internal thread is arranged on the inner wall of the connecting rod 5, and the internal thread is matched with the external thread connecting piece 9.

As shown in fig. 3, a first seal ring 10 and a second seal ring 12 are respectively provided between the male threaded connector 9 and the connector 11.

As shown in fig. 2 and 3, the other end of the connecting member 11 is fixedly connected with a threaded connecting rod 13, and the threaded connecting rod 13 is threadedly connected with a connecting member body 19 through threads 14.

As shown in fig. 3, nuts 21 are fixedly connected to both ends of the connector body 19, a collar 16 is disposed between an inner wall of the nut 21 and the connector body 19, a bend 15 is disposed in the collar 16, a pressing ring 17 is fixedly connected to one end of the bend 15, a third sealing ring 18 is disposed between one end of the pressing ring 17 and the inner wall of the connector body 19, and a connecting portion 23 is disposed at a middle position of the connector body 19.

As shown in fig. 3, one end of the nut 21 is fixedly connected with the connecting end 20, and the other end of the nut 21 is fixedly connected with the interface 22.

The working principle is as follows: firstly, a downhole casing 1 is placed in an oil field well, a downhole pipe column 2 and a downhole optical fiber 3 are placed in the downhole casing 1, the other end of the downhole optical fiber 3 is completely soaked in downhole fluid, the other end of the downhole optical fiber 3 is connected to one end of a connecting piece 11 through a connecting rod 5 in a threaded manner, a first sealing ring 10 and a second sealing ring 12 which are arranged between the connecting rod 5 and the connecting piece 11 effectively ensure the air tightness of the connecting rod 5 and the connecting piece 11, the other end of the connecting piece 11 is connected to one end of a connecting piece body 19 through a threaded connecting rod 13 and a thread 14, a nut 21 is arranged on the outer wall of the connecting piece body 19, a clamping ring 16 is arranged between the nut 21 and the connecting piece body 19, a bend 15 is arranged in the clamping ring 16, the bend 15 and a pressing ring 17 ensure the air tightness between the connecting piece body 19 and the nut 21, and a, nut 21 one end is connected on the link 20 of connecting piece body 19, and the other end of nut 21 is connected on interface 22, can carry out the quick connection of optical fiber 3 on flowmeter 7 in the pit through connecting device 6, and the fluid in the pit carries out the quick actual data that calculates fluid in the pit through calculator 8 on flowmeter 7, connects the actual data in the pit with the pit at the flowmeter 7 other end through the transmission equipment of peripheral hardware and carries out the analysis and arrangement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An oil downhole flowmeter based on a distributed optical fiber device, comprising a downhole casing (1), characterized in that: the underground pipe casing (1) inner wall is provided with tubular column (2) in the pit, tubular column (2) one side inner wall is provided with optic fibre (3) in the pit, optic fibre (3) outer wall in the pit is provided with optic fibre protector (4), optic fibre (3) other end fixedly connected with connecting rod (5) in the pit, connecting rod (5) other end fixedly connected with connecting device (6), connecting device (6) other end fixedly connected with flowmeter (7), flowmeter (7) top fixedly connected with calculator (8).

2. The petroleum downhole flowmeter based on the distributed optical fiber device as claimed in claim 1, wherein: connecting device (6) contain connecting piece (11), connecting piece (11) one end is provided with external screw thread connecting piece (9), connecting rod (5) inner wall is provided with the internal thread, internal thread and external screw thread connecting piece (9) phase-match.

3. The petroleum downhole flowmeter based on the distributed optical fiber device as claimed in claim 2, wherein: a first sealing ring (10) and a second sealing ring (12) are respectively arranged between the external thread connecting piece (9) and the connecting piece (11).

4. The petroleum downhole flowmeter based on the distributed optical fiber device as claimed in claim 2, wherein: the other end of the connecting piece (11) is fixedly connected with a threaded connecting rod (13), and the threaded connecting rod (13) is connected with a connecting piece body (19) through threads (14).

5. The downhole petroleum flowmeter based on the distributed fiber optic device of claim 4, wherein: the connecting piece is characterized in that nuts (21) are fixedly connected to two ends of the connecting piece body (19), a clamping ring (16) is arranged between the inner wall of the nut (21) and the connecting piece body (19), a bending angle (15) is arranged in the clamping ring (16), a pressing ring (17) is fixedly connected to one end of the bending angle (15), a third sealing ring (18) is arranged between one end of the pressing ring (17) and the inner wall of the connecting piece body (19), and a connecting portion (23) is arranged in the middle of the connecting piece body (19).

6. The downhole petroleum flowmeter based on the distributed fiber optic device of claim 5, wherein: nut (21) one end fixedly connected with link (20), nut (21) other end fixedly connected with interface (22).