Intelligent crude oil gathering pipeline deposit deposition rate measuring device

Abstract

The utility model belongs to the technical field of oilfield gathering and transportation pipeline, and particularly relates to an intelligent crude oil gathering and transportation pipeline deposit deposition rate measuring device. The intelligent crude oil gathering and transportation pipeline deposit deposition rate measuring device comprises an oil storage tank, a dosing opening, a liquid inlet, a liquid outlet and a liquid flow backflow opening are arranged on the oil storage tank, further comprises a first test pipe and a second test pipe which are connected between the liquid outlet and the liquid flow backflow opening and are arranged in parallel, and a pressure transmitter is arranged at the connection of the liquid outlet and the first test pipe and the second test pipe. The utility model simulates the real working condition of crude oil gathering and transportation by continuously circulating the crude oil in the test pipe, judges the deposition condition of the deposit in the pipeline by the pressure change at the connection of the liquid outlet and the first test pipe and the second test pipe, and generates a deposit deposition rate curve by using a computer, thereby providing technical support for the design and optimization and reconstruction of the oilfield crude oil gathering and transportation pipeline.

Description

Technical Field

[0001] This utility model relates to the field of oilfield gathering and transportation pipeline technology, specifically to an intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device. Background Technology

[0002] my country's major onshore oilfields have successively entered a stage characterized by high wax content, high salinity, and high sulfur content. Common sediments in gathering and transportation pipelines include paraffin wax, bituminous substances, inorganic salts (CaCO3, BaSO4, FeS, etc.), and their complex scale. The significant differences in physical properties between different blocks and well batches make it difficult to predict sedimentation patterns uniformly. Summary of the Invention

[0003] This invention relates to an intelligent testing device for measuring the deposition rate of sediments in crude oil gathering and transportation pipelines. The purpose is to develop an intelligent testing device for measuring the deposition rate of sediments in crude oil gathering and transportation pipelines of different diameters and materials. This device can realize the analysis and velocity measurement of sediment deposition process in crude oil gathering and transportation pipelines under various complex working conditions (pressure, temperature, crude oil properties).

[0004] The technical solution of this utility model is as follows:

[0005] An intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device includes an oil storage tank, which is provided with a chemical dosing port, a liquid inlet, a liquid outlet and a liquid return port; it also includes a first test tube and a second test tube connected in parallel between the liquid outlet and the liquid return port; a pressure transmitter is provided at the connection between the liquid outlet and the first test tube and the second test tube.

[0006] The liquid outlet is connected to a liquid outlet pipeline; the liquid inlet end of the first test tube and the liquid inlet end of the second test tube are both connected to the liquid outlet pipeline; the liquid return port is connected to a liquid return pipeline; the liquid outlet end of the first test tube and the liquid outlet end of the second test tube are both connected to the liquid return pipeline; a pressure transmitter is installed on the liquid outlet pipeline.

[0007] An oil pump is also installed on the liquid outlet pipeline, and a flow meter is installed on the liquid return pipeline.

[0008] The oil storage tank is equipped with a heating device, which includes an electric heater and a heat transfer fluid.

[0009] The oil storage tank is also equipped with a temperature transmitter.

[0010] The oil storage tank is also equipped with a stirring device, which includes a motor located outside the oil storage tank and a stirring rod with a stirring paddle at the bottom; the top of the stirring rod passes through the oil storage tank and is connected to the motor.

[0011] The first test tube has a first inlet valve at the liquid inlet end and a first outlet valve at the liquid outlet end; the second test tube has a second inlet valve at the liquid inlet end and a second outlet valve at the liquid outlet end.

[0012] The first test tube and the second test tube are also connected to a drain line, and the drain line is equipped with a drain valve.

[0013] It also includes a computer, and the temperature transmitter, pressure transmitter, motor, first inlet valve, first outlet valve, second inlet valve, second outlet valve, drain valve and oil pump are all connected to the computer.

[0014] The technical advantages of this utility model are as follows:

[0015] This invention utilizes the continuous circulation of crude oil within a test pipe to simulate real-world crude oil gathering and transportation conditions. By analyzing the pressure changes at the connection points between the liquid outlet and the first and second test pipes, the deposition status of sediments in the pipeline is determined. Furthermore, a computer-generated sediment deposition rate curve provides technical support for the design and optimization of crude oil gathering and transportation pipelines in oil fields. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Reference numerals: 1. Liquid inlet; 2. Stirring device; 3. Dosing port; 4. Oil storage tank; 5. Electric heater; 6. Heat transfer fluid; 7. Oil pump; 8. Temperature transmitter; 9. Pressure transmitter; 10. Computer; 11. Drain valve; 13. First inlet valve; 14. Second inlet valve; 15. First test tube; 16. Second test tube; 17. Flow meter; 19. First outlet valve; 20. Second outlet valve. Detailed Implementation

[0018] Example 1

[0019] An intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device includes an oil storage tank 4, which is provided with a chemical dosing port 3, a liquid inlet 1, a liquid outlet and a liquid return port; it also includes a first test tube 15 and a second test tube 16 connected in parallel between the liquid outlet and the liquid return port; a pressure transmitter 9 is provided at the connection between the liquid outlet and the first test tube 15 and the second test tube 16.

[0020] The specific implementation process of this embodiment is as follows:

[0021] Determination of scaling rate in first test tube 15: Single well production fluid is introduced into oil storage tank 4 through liquid inlet 1, the first test tube 15 is connected to oil storage tank 4, the connection between the second test tube 16 and oil storage tank 4 is disconnected, and the single well production fluid is circulated in the first test tube 15 at a fixed flow rate. The pressure change on pressure transmitter 9 is recorded and observed.

[0022] Determination of scaling rate in the second test tube 16: Disconnect the connection between the first test tube 15 and the oil storage tank 4; add key ions to the oil storage tank 4 through the dosing port 3, maintaining the same experimental parameters as the scaling rate determination process in the first test tube 15; connect the second test tube 16 and the oil storage tank 4, allowing the single-well production fluid to circulate in the second test tube 16 at a fixed flow rate; record and observe the pressure changes on the pressure transmitter 9; based on the pressure changes before and after the pressure transmitter 9, determine the deposition status of the sediment, and then obtain the sediment deposition rate curve.

[0023] Example 2

[0024] Based on Embodiment 1, the following additional features are included: the liquid outlet is connected to a liquid outlet pipeline; the liquid inlet end of the first test tube 15 and the liquid inlet end of the second test tube 16 are both connected to the liquid outlet pipeline; the liquid return port is connected to a liquid return pipeline; the liquid outlet end of the first test tube 15 and the liquid outlet end of the second test tube 16 are both connected to the liquid return pipeline; and a pressure transmitter 9 is provided on the liquid outlet pipeline.

[0025] Example 3

[0026] Based on Embodiment 2, the method further includes: an oil pump 7 is installed on the liquid outlet pipeline, and a flow meter 17 is installed on the liquid return pipeline. The oil pump 7 enables quantitative delivery.

[0027] Example 4

[0028] Based on Embodiment 3, the method further includes: a heating device is provided inside the oil storage tank 4, the heating device including an electric heater 5 and a heat transfer fluid 6. A temperature transmitter 8 is also provided inside the oil storage tank 4, enabling the single-well produced fluid inside the oil storage tank 4 to be heated to and maintained at the target temperature;

[0029] It also includes: a stirring device 2 installed inside the oil storage tank 4, the stirring device 2 including a motor located outside the oil storage tank 4, and a stirring rod with a stirring paddle at the bottom; the top of the stirring rod passes through the oil storage tank 4 and is connected to the motor. The stirring device 2 is used to uniformly heat the produced fluid from the single well.

[0030] Example 5

[0031] Based on Embodiment 4, the method further includes: a first inlet valve 13 at the liquid inlet end of the first test tube 15 and a first outlet valve 19 at the liquid outlet end of the first test tube 15; a second inlet valve 14 at the liquid inlet end of the second test tube 16 and a second outlet valve 20 at the liquid outlet end of the second test tube 16. The first test tube 15 and the second test tube 16 are also connected to a drain line, and a drain valve 11 is provided on the drain line. The method also includes a computer 10, and the temperature transmitter 8, pressure transmitter 9, motor, first inlet valve 13, first outlet valve 19, second inlet valve 14, second outlet valve 20, drain valve, and oil pump 7 are all connected to the computer 10.

[0032] The specific implementation process of this embodiment is as follows:

[0033] Temperature control: Set the target temperature on the computer 10; add the single-well produced fluid into the oil storage tank 4 through the liquid inlet 1; the temperature transmitter 8 measures the temperature of the single-well produced fluid in real time and uploads it to the computer 10; the computer 10 automatically starts the electric heater 5 and the agitator 2 to uniformly heat the single-well produced fluid in the oil storage tank 4 to the target temperature and maintain a constant temperature.

[0034] Determination of scaling rate in the first test tube 15: Open the first inlet valve 13 and the first outlet valve 19 via computer 10, and close the second inlet valve 14 and the second outlet valve 20; start the oil pump 7 to make the single-well produced fluid circulate in the first test tube 15 at a fixed flow rate, set the circulation time on computer 10 (continuous or intermittent), and record and observe the pressure change on pressure transmitter 9 on computer 10.

[0035] Scaling rate determination in the second test tube 16: Key ions are added through the dosing port 3, and the mixture is stirred to adjust the experimental parameters of the single-well produced fluid after dosing to be consistent with the scaling rate determination process in the first test tube 15; the first inlet valve 13 and the first outlet valve 19 are closed by the computer 10, and the second inlet valve 14 and the second outlet valve 20 are opened; the oil pump 7 is started to make the single-well produced fluid after dosing circulate in the second test tube 16 at a fixed flow rate, and the circulation time is set on the computer 10 (it can be continuous or intermittent), and the pressure change on the pressure transmitter 9 is recorded and observed on the computer 10.

[0036] Plotting Time vs. Pressure Variation: The basic production data of the single well (including wax deposition temperature and concentrations of calcium, barium, iron, carbonate, and sulfate ions), the basic production data of the single well after chemical dosing (including wax deposition temperature and concentrations of calcium, barium, iron, carbonate, and sulfate ions), data from temperature transmitter 8, pressure transmitter 9, flow meter 17, and experimental time data are all uploaded to computer 10 to plot the time vs. pressure variation. Based on the pressure changes before and after pressure transmitter 9, the deposition status of the sediment is determined, and thus the sediment deposition rate curve is obtained.

Claims

1. An intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device, comprising an oil storage tank (4), wherein the oil storage tank (4) is provided with a chemical dosing port (3), a liquid inlet (1), a liquid outlet and a liquid return port; characterized in that, It also includes a first test tube (15) and a second test tube (16) connected in parallel between the liquid outlet and the liquid return port; a pressure transmitter (9) is provided at the connection between the liquid outlet and the first test tube (15) and the second test tube (16).

2. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 1, characterized in that: The liquid outlet is connected to a liquid outlet pipeline; the liquid inlet end of the first test tube (15) and the liquid inlet end of the second test tube (16) are both connected to the liquid outlet pipeline; the liquid return port is connected to a liquid return pipeline; the liquid outlet end of the first test tube (15) and the liquid outlet end of the second test tube (16) are both connected to the liquid return pipeline; a pressure transmitter (9) is provided on the liquid outlet pipeline.

3. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 2, characterized in that: An oil pump (7) is also installed on the liquid outlet pipeline, and a flow meter (17) is installed on the liquid return pipeline.

4. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 3, characterized in that: The oil storage tank (4) is equipped with a heating device, which includes an electric heater (5) and a heat transfer fluid (6).

5. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 4, characterized in that: The oil storage tank (4) is also equipped with a temperature transmitter (8).

6. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 5, characterized in that: The oil storage tank (4) is also equipped with a stirring device (2). The stirring device (2) includes a motor located outside the oil storage tank (4) and a stirring rod. The bottom of the stirring rod is equipped with a stirring paddle. The top of the stirring rod passes through the oil storage tank (4) and is connected to the motor.

7. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 6, characterized in that: The first test tube (15) is provided with a first inlet valve (13) at the liquid inlet end and a first outlet valve (19) at the liquid outlet end; the second test tube (16) is provided with a second inlet valve (14) at the liquid inlet end and a second outlet valve (20) at the liquid outlet end.

8. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 7, characterized in that: The first test tube (15) and the second test tube (16) are also connected to a drain line, and a drain valve (11) is provided on the drain line.

9. The intelligent crude oil gathering and transportation pipeline sediment deposition rate measuring device according to claim 8, characterized in that: It also includes a computer (10), and the temperature transmitter (8), pressure transmitter (9), motor, first inlet valve (13), first outlet valve (19), second inlet valve (14), second outlet valve (20), drain valve and oil pump (7) are all connected to the computer (10).

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