An intelligent oil well accompanying and descending production pipeline back pressure device

Abstract

The utility model relates to a kind of for oil well intelligentization accompanying drop production pipeline back pressure device, including a liquid storage tank, the liquid outlet of this liquid storage tank is connected with the inlet of a liquid pipeline, the outlet of this liquid pipeline is connected with the oil pipeline for conveying crude oil, further including a matching this liquid pipeline and can adjust the liquid flow of passing through this liquid pipeline adjustment part, further including a pressure sensor, it is installed in the oil pipeline, the adjustment part is electrically connected the pressure sensor.Pressure sensor is set on oil pipeline, the pressure of oil pipeline can be monitored in real time, and adjustment part is set, and the liquid flow of input can be adjusted in real time according to the pressure of real-time monitoring, liquid waste can be avoided.At the same time, this mode does not need manual operation, reduce cost, improve efficiency.

Description

Technical Field

[0001] This utility model relates to the fields of oil and gas exploration and development and petroleum engineering technology, and in particular to an intelligent backpressure reduction device for production pipelines in oil wells. Background Technology

[0002] A certain oilfield is a carbonate rock extra-heavy oil reservoir. The wellbore employs a dilution and viscosity reduction process. As the reservoir development enters the mid-to-late stage, it enters a medium-to-high water-cut phase. This high water-cut phase leads to oil-water separation, and the production pipeline to the heavy oil well is longer than 3 kilometers. The crude oil takes over 20 hours to flow through the surface pipeline before reaching the transfer station. Due to the prolonged residence time of the mixed solution in the pipeline, its fluidity decreases with decreasing temperature, causing increased back pressure at the wellhead and severely restricting normal well production. Currently, pump trucks and brine trucks are used to sweep the pipeline at the wellhead, or the dilution rate is increased to ensure normal well production. This results in significant special vehicle costs and an increased dilution ratio. Statistics show that the monthly cost of pump truck and brine truck sweeping due to high back pressure in this oilfield is 250,000 yuan, and the amount of oil used for dilution is increased by 150 tons. There is an urgent need for a device that can reduce the pressure in the inlet pipeline, avoiding waste of manpower, material resources, and financial resources while ensuring continuous production of heavy oil wells.

[0003] Therefore, there are superior technical solutions in the existing technology, such as the patent with publication number "CN209444321U", which discloses an automatic unattended chemical dosing device for viscosity reduction in heavy oil wells. This technical solution involves setting up a water storage tank that can monitor the liquid level and add water to it in real time according to the liquid level. When the water level is insufficient, it is automatically added, saving labor. However, this existing technology has a drawback: it cannot adjust the drainage volume of the water storage tank in real time, which may lead to water waste.

[0004] Therefore, how to provide an intelligent backpressure reduction device for oil well production pipelines that can solve the above-mentioned drawbacks has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To achieve the above objectives, this utility model provides an intelligent backpressure reduction device for oil well production pipelines, as detailed below:

[0006] An intelligent backpressure reduction device for oil well production pipelines includes a storage tank, the outlet of which is connected to the inlet of a fluid delivery pipeline, the outlet of which is connected to an oil delivery pipeline for transporting crude oil, an adjustment unit that matches the fluid delivery pipeline and is capable of adjusting the flow rate of the fluid passing through the fluid delivery pipeline, and a pressure sensor installed on the oil delivery pipeline. The adjustment unit is electrically connected to the pressure sensor.

[0007] Preferably, the adjustment unit includes a diaphragm pump, a PID controller, and a frequency converter that are electrically connected to each other. The diaphragm pump is installed on the infusion line, and the PID controller is electrically connected to the pressure sensor.

[0008] Preferably, the inlet of the storage tank is connected to a liquid supply source through a liquid supply pipeline, the liquid supply pipeline is equipped with a solenoid valve, the storage tank is equipped with a liquid level sensor for monitoring its liquid level, and also includes a controller, which is electrically connected to the solenoid valve and the liquid level sensor.

[0009] Preferably, the controller is a PLC controller.

[0010] Preferably, the infusion pipeline is equipped with a one-way valve, the flow direction of which is from the storage tank towards the infusion pipeline.

[0011] Preferably, the liquid storage tank is open.

[0012] The intelligent backpressure reduction device for oil well production pipelines provided by this utility model has the following beneficial effects:

[0013] By installing pressure sensors on the oil pipeline, the pressure can be monitored in real time. An adjustment mechanism can be incorporated to adjust the input fluid flow rate based on the monitored pressure, preventing fluid waste. Furthermore, this method eliminates the need for manual operation, reducing costs and increasing efficiency.

[0014] As a preferred option, the diaphragm pump uses frequency conversion control, which provides high accuracy in flow and pressure, and can accurately and promptly adjust the flow rate.

[0015] As a preferred option, components such as liquid level sensors are installed to enable automatic monitoring of the liquid level in the storage tank, ensuring a normal liquid supply.

[0016] As a preferred option, a one-way valve is installed to prevent crude oil from entering the storage tank.

[0017] As a preferred option, the water storage tank is open-topped, with a simple structure that maintains internal and external pressure balance at all times, preventing the tank from expanding and rupturing, which could cause brine leakage and environmental pollution. It also facilitates maintenance and cleaning of suspended solids and oil stains in the water storage tank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a specific embodiment of the intelligent oil well backpressure reduction production pipeline device provided by this utility model.

[0019] Legend:

[0020] 1. Storage tank, 2. Infusion pipeline, 3. Oil pipeline, 4. Pressure sensor, 5. Diaphragm pump, 6. PID controller, 7. Supply pipeline, 8. Solenoid valve, 9. Liquid level sensor, 10. Controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Combination Figure 1 This utility model provides an intelligent backpressure reduction device for production pipelines in oil wells, including a storage tank 1, the outlet of which is connected to the inlet of a fluid delivery pipeline 2, the outlet of which is connected to an oil delivery pipeline 3 for transporting crude oil, an adjustment part that matches the fluid delivery pipeline 2 and can adjust the flow rate of the liquid passing through the fluid delivery pipeline 2, and a pressure sensor 4 that is installed on the oil delivery pipeline 3. The adjustment part is electrically connected to the pressure sensor 4.

[0023] A pressure sensor 4 is installed on the oil pipeline 3 to monitor the pipeline pressure in real time. An adjustment unit is also included to adjust the input liquid flow rate in real time based on the monitored pressure, thus preventing liquid waste. Furthermore, this method eliminates the need for manual operation, reducing costs and improving efficiency.

[0024] like Figure 1 As shown, in one specific embodiment, the adjustment unit includes a diaphragm pump 5, a PID controller 6, and a frequency converter that are electrically connected. The diaphragm pump 5 is installed on the infusion line 2, and the PID controller 6 is electrically connected to the pressure sensor 4.

[0025] The diaphragm pump 5 adopts frequency conversion control, which has high accuracy in flow and pressure, and can accurately and timely adjust the flow.

[0026] Among them, such as Figure 1 As shown, in one specific embodiment, the inlet of the liquid storage tank 1 is connected to a liquid supply source through a liquid supply pipeline 7. A solenoid valve 8 is installed on the liquid supply pipeline 7. A liquid level sensor 9 for monitoring its liquid level is installed on the liquid storage tank 1. It also includes a controller 10, which is electrically connected to the solenoid valve 8 and the liquid level sensor 9.

[0027] By installing components such as a liquid level sensor 9, the liquid level in the storage tank 1 can be automatically monitored to ensure a normal liquid supply.

[0028] The controller 10 is a PLC controller.

[0029] In one specific embodiment, the infusion pipeline 2 is equipped with a one-way valve, the flow direction of which is from the storage tank 1 toward the oil pipeline 3.

[0030] A one-way valve is installed to prevent crude oil from entering storage tank 1.

[0031] In one specific implementation, such as Figure 1 As shown, the storage tank 1 is an open-top design. The open design of the storage tank 1 simplifies its structure, maintains internal and external pressure balance, prevents tank expansion and rupture that could lead to brine leakage and environmental pollution, and facilitates maintenance and cleaning of suspended solids and oil stains within the tank.

[0032] Primarily used for water supply in high-pressure wells with water pipeline networks, it enables intelligent water supply, effectively improving the timeliness of water supply to the accompanying well, reducing manpower workload, increasing the efficiency of oil well inspection, ensuring the normal operation of oil wells, and reducing the risk of oilfield water overflow and environmental pollution caused by untimely inspections. It has broad prospects for widespread application.

Claims

1. A device for intelligent backpressure reduction of production pipelines in oil wells, characterized in that, The device includes a storage tank, the outlet of which is connected to the inlet of a liquid delivery pipeline, the outlet of which is connected to an oil delivery pipeline for transporting crude oil, an adjustment unit that matches the liquid delivery pipeline and is capable of adjusting the flow rate of liquid passing through the liquid delivery pipeline, and a pressure sensor that is installed on the oil delivery pipeline. The adjustment unit is electrically connected to the pressure sensor.

2. The intelligent backpressure reduction device for production pipelines in oil wells according to claim 1, characterized in that, The adjustment unit includes a diaphragm pump, a PID controller, and a frequency converter that are electrically connected. The diaphragm pump is installed on the infusion pipeline, and the PID controller is electrically connected to the pressure sensor.

3. The intelligent backpressure reduction device for production pipelines in oil wells according to claim 2, characterized in that, The inlet of the storage tank is connected to a liquid supply source through a liquid supply pipeline. A solenoid valve is installed on the liquid supply pipeline. A liquid level sensor for monitoring the liquid level is installed on the storage tank. The tank also includes a controller that is electrically connected to the solenoid valve and the liquid level sensor.

4. The intelligent backpressure reduction device for production pipelines in oil wells according to claim 3, characterized in that, The controller is a PLC controller.

5. The intelligent backpressure reduction device for production pipelines in oil wells according to claim 4, characterized in that, The infusion pipeline is equipped with a one-way valve, which directs the flow from the storage tank toward the infusion pipeline.

6. The intelligent backpressure reduction device for production pipelines in oil wells according to claim 5, characterized in that, The storage tank is open.

Images