CN209817953U - New multifunctional tubing - Google Patents

Abstract

A new type of multi-functional oil pipe, comprising oil pipe, characterized in that: an outer pipe body is arranged on the outside of the oil pipe, and a thermal insulation cover or thermal insulation glue is provided in the annular space formed between the outer pipe body and the oil pipe, and one end of the oil pipe is connected to The double female connectors are threaded, and the other end is connected with the male and female connectors with threads. The utility model can reduce the energy consumption loss of the liquid in the lifting process of the shaft, and ensure the flow of the liquid at a relatively high temperature and flow rate. The fluidity of the fluid produced by the oil well in the wellbore becomes better, and the temperature of the wellhead of the produced fluid is effectively increased. It can better solve the problems of high construction cost and high production energy consumption caused by three-tube heat tracing, electric heating and other processes for oil field companies. Production wells realize cold production, which reduces production energy consumption and costs. Realize green and environment-friendly production in oil fields.

Description

New multifunctional tubing

technical field

The utility model relates to the technical field of petroleum and natural gas exploitation, in particular to a novel multifunctional oil pipe.

Background technique

For oil wells with high wax content and high freezing point, heat tracing is required during the production process, resulting in high production energy consumption and high production costs. During the flow of the produced oil in the wellbore, it will continuously dissipate heat to the formation, and the heat dissipation will cause the temperature of the liquid in the wellbore to gradually decrease, resulting in wax deposition or poor fluidity. The flow process of oil production liquid is: the liquid in the oil well flows into the cluster pipeline or oil storage device through the oil pump, oil pipe, and wellhead. During this process, the liquid at the bottom of the oil well has a relatively high temperature and good flow performance. When it reaches the upper part of the oil well, The wellhead temperature is low, and the liquid temperature drops relatively quickly, resulting in poor fluidity of the liquid. In order to ensure the fluidity of the oil, current heating methods such as electricity, fuel oil, and gas are used to heat the liquid to maintain the liquid temperature and keep the liquid at a good temperature. mobility, but this method has disadvantages such as energy consumption and environmental pollution.

Contents of the invention

In view of the deficiencies in the above technical problems, the purpose of this utility model is to provide a novel multifunctional oil pipe.

A novel multifunctional oil pipe, comprising oil pipe (4), characterized in that: an outer pipe body (3) is arranged outside the oil pipe (4), and an annular space formed between the outer pipe body (3) and the oil pipe (4) An insulation cover or insulation glue (6) is provided inside, and one end of the oil pipe (4) is connected with the double female joint (1) with a screw, and the other end is connected with the male and female joint (8) with a screw.

The heat preservation cover is wrapped on the outer wall of the oil pipe (4), and is fixed and protected by the outer pipe body (3).

The thermal insulation glue is injected into the annular space formed between the outer pipe body (3) and the oil pipe (4) through the suction channel (5) on the outer pipe body (3).

One or more suction passages (5) are provided on the outer tube body (3). After the suction is completed, a sealing plug is installed on the suction passage (5) upper cover.

For increasing the anticorrosion and wear resistance of the oil pipe (4), a plastic pipe (9) is installed inside the oil pipe (4).

The plastic pipe (9) is made of ultra-high molecular polyethylene material.

According to the length of the required tubing, multiple multifunctional tubing can be spliced together for use. When splicing, the male and female connectors (8) are screwed into the double female connector (1) of another multifunctional tubing as a tail pipe .

There are slots inside the double female joint (1) and the male and female joints (8), and a sealing ring (2) is placed in the slot to make the oil pipe (4) and the double female joint (1) and the male and female joints (8) Form a secondary sealing fit.

In order to prevent the outer tube body (3) from slipping, one end of the outer tube body (3) is connected with the double female joint (1) into one body, and the other end is connected with the male and female joints (8) into one body.

A centralizing frame (7) is arranged between the oil pipe (4) and the outer pipe body (3).

The utility model can reduce the energy consumption loss of the liquid in the lifting process of the shaft, and ensure the flow of the liquid at a relatively high temperature and flow rate. The fluidity of the fluid produced by the oil well in the wellbore becomes better, and the temperature of the wellhead of the produced fluid is effectively increased. It can better solve the problems of high construction cost and high production energy consumption caused by three-tube heat tracing, electric heating and other processes for oil field companies. Production wells realize cold production, which reduces production energy consumption and costs. Realize green and environment-friendly production in oil fields.

Description of drawings

Fig. 1 is the sectional structural representation of the utility model;

Fig. 2 is a schematic cross-sectional structural view of adding a plastic pipe in the oil pipe of Fig. 1 .

In the figure: double female joint 1, sealing ring 2, outer pipe body 3, oil pipe 4, suction channel 5, heat preservation cover or heat preservation glue 6, righting frame 7, male and female joint 8, plastic pipe 9, edge 10.

Detailed ways

Example 1

As shown in FIG. 1 , an insulation cover is wrapped on the outer wall of the oil pipe 4 and fixed by the outer pipe body 3 . The external thread of oil pipe 4 one end is screwed with the internal thread of double female joint 1, and the external thread of oil pipe 4 other ends is screwed with the internal thread of male and female joint 8. Inside the double female joint 1 and the male and female joint 8 are provided with a notch, and a sealing ring 2 is placed in the notch, so that the oil pipe 4 forms a secondary sealing fit with the double female joint 1 and the male and female joint 8.

A suction passage 5 is provided on the outer tube body 3, and the suction passage 5 is used to suck heat-conducting substances or gases in the heat-preserving annular space. After the suction is completed, the suction passage 5 is covered with a plug. In order to prevent the outer tube body 3 from slipping, one end of the outer tube body 3 is integrally connected with the double female joint 1 by welding, and the other end is integrally connected with the male and female joints 8 by welding. A centralizing frame 7 is arranged between the oil pipe 4 and the outer pipe body 3 , and the main function of the centralizing frame 7 is to make the outer pipe body 3 and the oil pipe 4 concentric.

As shown in Figure 2, in order to improve the anticorrosion and wear resistance of the oil pipe 4, a plastic pipe 9 is added inside the oil pipe 4, and the plastic pipe 9 is made of ultra-high molecular polyethylene material, in order to prevent the plastic pipe 9 from slipping , the two ends of the plastic pipe 9 are bent outwards to have edge portions 10 that closely fit with the oil pipe 4 .

According to the length of the required oil pipe, multiple multifunctional oil pipes can be spliced together for use. When splicing, the male and female joints 8 are screwed into the double female joints 1 of another multifunctional oil pipe as tail pipes.

Example 2

As shown in Figure 1, an outer pipe body 3 is provided outside the oil pipe 4, and one or more suction passages 5 are opened on the outer pipe body 3, and the thermal insulation glue is filled outside through the suction passages 5 provided on the outer pipe body 3. In the annular space formed between the pipe body 3 and the oil pipe 4.

One or more suction channels 5 are opened on the outer pipe body 3, and the above-mentioned suction channels 5 are not only used for filling thermal insulation glue, but also used for sucking heat-conducting substances or gases in the thermal insulation annular space. After the suction is completed, a sealing plug is installed on the suction channel 5 upper cover.

The external thread at one end of the oil pipe 4 is screwed with the internal thread of the double female joint 1 , and the external thread at the other end of the oil pipe 4 is screwed with the internal thread of the male and female joint 8 . Notches are provided inside the double female joint 1 and the male and female joint 8, and the sealing ring 2 is placed in the notch, so that the oil pipe 4 forms a secondary sealing fit with the double female joint 1 and the male and female joint 8.

In order to prevent the outer tube body 3 from slipping, one end of the outer tube body 3 is integrally connected with the double female joint 1 by welding, and the other end is integrally connected with the male and female joints 8 by welding. A centralizing frame 7 is arranged between the oil pipe 4 and the outer pipe body 3 , and the main function of the centralizing frame 7 is to make the outer pipe body 3 and the oil pipe 4 concentric.

As shown in Figure 2, in order to improve the anticorrosion and wear resistance of the oil pipe 4, a plastic pipe 9 is added inside the oil pipe 4, and the plastic pipe 9 is made of ultra-high molecular polyethylene material, in order to prevent the plastic pipe 9 from slipping , the two ends of the plastic pipe 9 are bent outwards to have edge portions 10 that closely fit with the oil pipe 4 .

According to the length of the required oil pipe, multiple multifunctional oil pipes can be spliced together for use. When splicing, the male and female joints 8 are screwed into the double female joints 1 of another multifunctional oil pipe as tail pipes.

Claims (10)

1. The utility model provides a novel multi-functional oil pipe, includes, oil pipe (4), its characterized in that: an outer pipe body (3) is arranged outside the oil pipe (4), a heat insulation sleeve or heat insulation glue (6) is arranged in an annular space formed between the outer pipe body (3) and the oil pipe (4), one end of the oil pipe (4) is in threaded connection with the double-female connector (1), and the other end of the oil pipe is in threaded connection with the male-female connector (8).

2. The novel multifunctional oil pipe of claim 1, characterized in that: the heat insulation sleeve is wrapped on the outer wall of the oil pipe (4) and is fixed and protected through the outer pipe body (3).

3. The novel multifunctional oil pipe of claim 1, characterized in that: the heat-preservation glue is filled into an annular space formed between the outer pipe body (3) and the oil pipe (4) through a suction channel (5) on the outer pipe body (3).

4. The novel multifunctional oil pipe of claim 1, characterized in that: one or more suction channels (5) are arranged on the outer tube body (3), and after suction is finished, the suction channels (5) are covered with plugs.

5. The novel multifunctional oil pipe of claim 1, characterized in that: in order to improve the corrosion resistance and the wear resistance of the oil pipe (4), a plastic pipe (9) is additionally arranged inside the oil pipe (4).

6. The novel multifunctional oil pipe of claim 5, characterized in that: the plastic pipe (9) is made of an ultrahigh molecular polyethylene material.

7. The novel multifunctional oil pipe of claim 1, characterized in that: according to the length of the needed oil pipe, a plurality of multifunctional oil pipes can be spliced together for use, and during splicing, the male joint (8) and the female joint (8) are used as tail pipes to be screwed into the double-female joint (1) of another multifunctional oil pipe.

8. The novel multifunctional oil pipe of claim 1, characterized in that: the inside at two female joint (1) and public female joint (8) has all been seted up the notch, has all placed sealing washer (2) in the notch, makes oil pipe (4) and two female joint (1) and public female joint (8) form the secondary seal cooperation.

9. The novel multifunctional oil pipe of claim 4, characterized in that: in order to prevent the outer pipe body (3) from slipping, one end of the outer pipe body (3) is connected with the double female connectors (1) into a whole, and the other end of the outer pipe body is connected with the male and female connectors (8) into a whole.

10. The novel multifunctional oil pipe of claim 8, wherein: a righting frame (7) is arranged between the oil pipe (4) and the outer pipe body (3).