Ground diluting device for heavy oil well

Abstract

The utility model provides a heavy oil well ground diluting device which comprises a main pipeline, a first branch pipeline and a second branch pipeline, the first branch pipeline and the second branch pipeline are both connected with the output end of the main pipeline, the output end of the first branch pipeline and the output end of the second branch pipeline are communicated to a production pipeline and a well respectively, and a pressure reducing valve is arranged on the first branch pipeline. Thin oil enters the first branch pipeline and the second branch pipeline through the main pipeline respectively and enters the production pipeline and the well through the first branch pipeline and the second branch pipeline respectively. The ground thin oil mixing device for the heavy oil well can reduce the viscosity of crude oil in an incoming production pipeline of the heavy oil well, solves the problem of frequent pipeline sweeping due to high return pressure, reduces the use amount of thin oil in the well, and improves the yield of the oil well.

Description

Technical Field

[0001] The utility model belongs to the technical field of heavy oil exploitation, and in particular relates to a surface dilution device for a heavy oil well. Background Art

[0002] At present, most of the heavy oil wells adopt centralized dilution. The dilution process is as follows: the mixed dilution oil enters the high-pressure dilution pump of the meter transfer station, and is distributed to each single well by the high-pressure branch line. The amount of dilution oil is controlled by the wellhead high-pressure automatic flow meter valve group to enter the heavy oil well for dilution production. Due to the high viscosity of the oil, low temperature, long pipeline, low pressure, and reduced diameter after anti-corrosion treatment, the back pressure is high during normal production, resulting in frequent well closure and line sweeping, which seriously affects the oil well production and pipeline operation. Utility Model Content

[0003] One purpose of the utility model is to provide a surface dilution device for heavy oil wells to reduce the viscosity of crude oil in the production pipeline of the heavy oil well entering the station, solve the problem of frequent line sweeping due to high back pressure, reduce the amount of thin oil in the well, and increase the output of the oil well.

[0004] According to the utility model, a surface dilution device for a heavy oil well is provided, comprising: a main line, a first branch pipeline and a second branch pipeline both connected to the output end of the main line, the output ends of the first branch pipeline and the second branch pipeline are respectively connected to the production pipeline and the well, and a pressure reducing valve is arranged on the first branch pipeline, the diluted oil enters the first branch pipeline and the second branch pipeline respectively via the main line, and enters the production pipeline and the well respectively via the first branch pipeline and the second branch pipeline.

[0005] In a preferred embodiment, the main line is provided with a stop valve, a check valve and a filter in sequence along the path direction of the diluted oil.

[0006] In a preferred embodiment, the first branch pipeline is provided with a stop valve, the pressure reducing valve, a pressure gauge and a flow meter in sequence along the path direction of the diluted oil.

[0007] In a preferred embodiment, the second branch pipeline is provided with a stop valve, a pressure gauge and a flow meter in sequence along the path direction of the diluted oil.

[0008] In a preferred embodiment, a pressure relief valve is further provided downstream of the flow meter.

[0009] In a preferred embodiment, a stop valve is provided downstream of the pressure relief valve.

[0010] In a preferred embodiment, the surface dilution device for heavy oil wells further comprises a first connecting pipeline connected to the output end of the first branch pipeline, and the output end of the first connecting pipeline is connected to the production pipeline.

[0011] In a preferred embodiment, the surface dilution device for heavy oil wells further comprises a second connecting pipeline connected to the output end of the first branch pipeline, and the output end of the second connecting pipeline is connected to the output end of the second branch pipeline.

[0012] In a preferred embodiment, a stop valve is provided on the first connecting pipeline.

[0013] In a preferred embodiment, a stop valve is provided on the second connecting pipeline.

[0014] The utility model has at least the following technical effects:

[0015] According to the utility model, a main line and a first branch pipeline and a second branch pipeline both connected to the output end of the main line are provided. Since the output ends of the first branch pipeline and the second branch pipeline are connected to the production pipeline and the well respectively, the diluted oil enters the first branch pipeline and the second branch pipeline respectively through the main line, and enters the production pipeline and the well respectively through the first branch pipeline and the second branch pipeline, so that a part of the diluted oil entering through the main line can be diverted to the first branch pipeline, and sent to the production pipeline after reducing the pressure therein, and the other part is diverted to the second branch pipeline and injected into the well by high pressure, so as to achieve quantitative dilution in the well and the production pipeline at the same time, reduce the viscosity of crude oil in the production pipeline of the heavy oil well entering the station, solve the problem of high back pressure, reduce the amount of diluted oil in the well, and increase the output of the oil well; at the same time, save process construction, crude oil transshipment and labor costs, reduce safety management risks, and achieve the purpose of increasing production and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural diagram of a surface dilution device for a heavy oil well according to an embodiment of the utility model is schematically shown.

[0017] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present utility model and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the utility model, it is necessary to understand that the terms "downstream", "inside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0020] In the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 As shown, the surface dilution device 100 for heavy oil wells described in the utility model comprises: a main line 1, a first branch pipeline 11 and a second branch pipeline 12 both connected to the output end of the main line 1, wherein the output ends of the first branch pipeline 11 and the second branch pipeline 12 are respectively connected to the production pipeline and the well, and a pressure reducing valve 5 is provided on the first branch pipeline 11, and the diluted oil enters through the input end of the main line 1, and enters the first branch pipeline 11 and the second branch pipeline 12 respectively through the output end of the main line 1, and enters the production pipeline and the well respectively through the first branch pipeline 11 and the second branch pipeline 12.

[0022] According to the utility model, a main line 1, a first branch line 11 and a second branch line 12 are provided, both of which are connected to the output end of the main line 1. Since the output ends of the first branch line 11 and the second branch line 12 are connected to the production pipeline and the well respectively, the diluted oil enters the first branch line 11 and the second branch line 12 respectively through the main line 1, and enters the production pipeline and the well respectively through the first branch line 11 and the second branch line 12, so that a part of the diluted oil entering through the main line 1 can be diverted to the first branch line 11, and sent to the production pipeline after reducing the pressure therein, and the other part is diverted to the second branch line 12 and injected into the well by high pressure, so as to achieve quantitative dilution in the well and the production pipeline at the same time, reduce the viscosity of crude oil in the production pipeline of the heavy oil well entering the station, solve the problem of high back pressure, reduce the amount of diluted oil in the well, and increase the output of the oil well; at the same time, save process construction, crude oil transshipment and labor costs, reduce safety management risks, and achieve the purpose of increasing production and efficiency.

[0023] In one or more embodiments, the main line 1 is provided with a stop valve 2, a check valve 3 and a filter 4 in sequence along the path direction of the lean oil, wherein the stop valve 2 provided on the main line 1 is used to cut off the flow of the lean oil in the main line 1, the check valve 3 can prevent the lean oil in the main line 1 from flowing back, and the filter 4 can remove impurities in the lean oil in the main line 1.

[0024] In one or more embodiments, the first branch pipeline 11 is provided with a stop valve 2, a pressure reducing valve 5, a pressure gauge 6 and a flow meter 7 in sequence along the path direction of the lean oil, wherein the stop valve 2 provided on the first branch pipeline 11 is used to cut off the flow of the lean oil in the first branch pipeline 11, the pressure reducing valve 5 is used to reduce the pressure of the lean oil in the first branch pipeline 11, and the pressure gauge 6 and the flow meter 7 are respectively used to detect the pressure and flow of the lean oil in the first branch pipeline 11.

[0025] In one or more embodiments, the second branch pipeline 12 is provided with a stop valve 2, a pressure gauge 6 and a flow meter 7 in sequence along the path direction of the lean oil, wherein the stop valve 2 provided on the second branch pipeline 12 is used to cut off the flow of the lean oil in the second branch pipeline 12, and the pressure gauge 6 and the flow meter 7 are used to detect the pressure and flow of the lean oil in the second branch pipeline 12, respectively.

[0026] In one or more embodiments, a pressure relief valve 8 is further provided downstream of the flow meter 7 on the first branch pipeline 11 and the second branch pipeline 12 to ensure that the pressure in the first branch pipeline 11 and the second branch pipeline 12 is below a set value.

[0027] In one or more embodiments, the first branch pipeline 11 and the second branch pipeline 12 are both provided with a stop valve 2 downstream of the pressure relief valve 8 to cut off the flow of the diluted oil.

[0028] In one or more embodiments, the surface dilution device 100 for heavy oil wells described in the utility model further includes a first connecting pipeline 9 connected to the output end of the first branch pipeline 11, and the output end of the first connecting pipeline 9 is connected to the production pipeline.

[0029] In one or more embodiments, the heavy oil well surface dilution device 100 described in the utility model further includes a second connecting pipeline 10 connected to the output end of the first branch pipeline 11 , and the output end of the second connecting pipeline 10 is connected to the output end of the second branch pipeline 12 .

[0030] In one or more embodiments, a stop valve 2 is provided on the first connecting pipeline 9 .

[0031] In one or more embodiments, a stop valve 2 is disposed on the second connecting pipeline 10 .

[0032] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A surface dilution device for heavy oil wells, characterized in that: include: a main pipeline, a first branch pipeline and a second branch pipeline both connected to the output end of the main pipeline, the output ends of the first branch pipeline and the second branch pipeline are connected to the production pipeline and the well respectively, and a pressure reducing valve is arranged on the first branch pipeline, The diluted oil enters the first branch pipeline and the second branch pipeline respectively through the main pipeline, and enters the production pipeline and the well respectively through the first branch pipeline and the second branch pipeline.

2. The surface dilution device for heavy oil wells according to claim 1, characterized in that: The main line is provided with a stop valve, a check valve and a filter in sequence along the path direction of the diluted oil.

3. The surface dilution device for heavy oil wells according to claim 2, characterized in that: The first branch pipeline is provided with a stop valve, the pressure reducing valve, a pressure gauge and a flow meter in sequence along the path direction of the diluted oil.

4. The surface dilution device for heavy oil wells according to claim 2, characterized in that: The second branch pipeline is provided with a stop valve, a pressure gauge and a flow meter in sequence along the path direction of the diluted oil.

5. The surface dilution device for heavy oil wells according to claim 3 or 4, characterized in that: A pressure relief valve is also provided downstream of the flow meter.

6. The surface dilution device for heavy oil wells according to claim 5, characterized in that: A stop valve is arranged downstream of the pressure relief valve.

7. The surface dilution device for heavy oil wells according to claim 1, characterized in that: The system also includes a first connecting pipeline connected to an output end of the first branch pipeline, and the output end of the first connecting pipeline is connected to a production pipeline.

8. The surface dilution device for heavy oil wells according to claim 7, characterized in that: It also includes a second connecting pipeline connected to the output end of the first branch pipeline, and the output end of the second connecting pipeline is connected to the output end of the second branch pipeline.

9. The surface dilution device for heavy oil wells according to claim 7, characterized in that: The first connecting pipeline is provided with a stop valve.

10. The surface dilution device for heavy oil wells according to claim 8, characterized in that: The second connecting pipeline is provided with a stop valve.

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