Oil collecting and ball collecting device

Abstract

The utility model discloses a kind of oil collection ball device, belong to oil and gas gathering and transportation technical field.The device includes pressure monitoring unit, anti-backflow unit and ball collecting unit.Pressure monitoring unit is set on inlet station pipeline, for monitoring the pressure of single oil pipeline;Anti-backflow unit is swing check valve, connected downstream of pressure monitoring unit, allow fluid and wax removal ball one-way pass and can automatically prevent backflow;Ball collecting unit is set downstream of check valve, for collecting wax removal ball.The utility model is integrated by pressure monitoring, swing check anti-backflow and ball collecting function, effectively solve the wax removal ball jam problem caused by using lifting check valve in traditional valve group, and can monitor single pipe pressure in real time, automatically prevent fluid backflow, with operation reliable, maintenance convenient, strong adaptability and the like advantages.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas gathering and transportation technology, specifically relating to an oil gathering and collecting device for oil coming from oilfield well sites. Background Technology

[0002] With the widespread application of ambient temperature gathering and transportation technology in oilfields, oil well production relies entirely on its own temperature for transportation, and the produced oil is transported to downstream stations via unheated single-pipe mixed transport. To achieve closed-loop gathering and transportation of crude oil at ambient temperature, intelligent ball-launching devices are installed at well sites to ensure unobstructed flow in the waxy crude oil pipeline, and downstream stations are equipped with inlet valve groups to receive fluids from upstream well sites. Currently, traditional inlet valve groups have the following two problems during operation: First, lift-type check valves are installed at the inlet. Because the weight of the wax-removing ball is greater than the buoyancy of the crude oil, and the valve diameter is small, the wax-removing ball accumulates and gets stuck, affecting production operations; second, pressure transformers are not installed on the inlet pipelines of multiple well sites, only at the main manifold, making it impossible to accurately monitor the pressure of individual pipelines. Therefore, there is an urgent need for an integrated device that can effectively prevent ball jamming and fluid backflow, and can achieve real-time monitoring of the pressure of a single inlet pipeline to replace the traditional, easily jammed lift-type check valves and achieve accurate monitoring of the pressure of a single pipeline group. Utility Model Content

[0003] The purpose of this invention is to overcome the aforementioned deficiencies of the prior art and provide an oil collection and ball receiving device. This device integrates pressure monitoring, backflow prevention, and ball receiving functions, aiming to achieve accurate monitoring of the inlet pressure of the oil pipeline, effectively prevent fluid backflow caused by well group cross-pressure or upstream pipeline leakage, and ensure that the dewaxing balls can pass smoothly without getting stuck, making pipeline dewaxing operations more convenient, efficient, and safe.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: An oil collection and ball receiving device includes a pressure monitoring unit, an anti-backflow unit, and a ball receiving unit; the pressure monitoring unit is installed on the inlet pipeline and is used to monitor the pressure of a single oil inlet pipeline; the anti-backflow unit is connected to the pipeline upstream of the pressure monitoring unit and is configured to allow fluid and dewaxing balls to pass in one direction and prevent fluid backflow; the ball receiving unit is installed downstream of the anti-backflow unit and is used to collect dewaxing balls.

[0005] The anti-backflow unit is a check valve, which automatically prevents fluid from backflowing and impacting the pressure monitoring unit.

[0006] The check valve is a swing check valve, which includes a valve disc that can rotate around a pivot. The swing check valve is configured such that when the inlet pressure is lower than the outlet pressure, its valve disc automatically closes under the action of fluid pressure difference and its own weight.

[0007] The backflow prevention unit is a swing check valve, and the check valve includes a valve disc that can rotate around a pivot.

[0008] The swing check valve is configured such that when the inlet pressure is lower than the outlet pressure, its valve disc automatically closes under the action of fluid pressure difference and its own weight.

[0009] The ball receiving unit is equipped with a bypass pipeline, and a bypass valve is installed on the bypass pipeline. Ball receiving unit valves are installed at both ends of the ball receiving unit pipeline. During equipment maintenance, the ball receiving unit valve is closed and the bypass valve is opened to activate the bypass pipeline.

[0010] The bypass pipeline is equipped with a valve for activating the bypass during equipment maintenance.

[0011] The device is connected in parallel to multiple inlet pipelines, each of which is independently equipped with the pressure monitoring unit and the anti-backflow unit, and finally connected to the shared ball receiving unit after the pipeline is connected together.

[0012] The pressure monitoring unit is a pressure transmitter.

[0013] An inlet gate valve is also installed at the inlet end of the pressure monitoring unit.

[0014] The ball receiving unit is a ball receiving tube. The oil collecting and ball receiving device is configured to be installed in horizontal, vertical, or inclined pipelines.

[0015] The flow-through components of the oil collecting and ball receiving device are made of materials that are resistant to erosion, wear, and corrosion, or have undergone appropriate treatment.

[0016] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model include: 1. Precise pressure monitoring: This utility model can monitor the operating pressure of each well site pipeline in real time and accurately by installing a pressure monitoring unit (such as a pressure transmitter) on each single inlet pipe, and promptly judge the operating status of the upstream pipeline, providing direct basis for production scheduling and fault diagnosis.

[0017] 2. High-efficiency anti-backflow and ball passage: This utility model uses a swing check valve as the anti-backflow unit. Its valve disc has a large opening stroke and low flow resistance, which can not only effectively prevent crude oil backflow and gathering and transportation losses caused by upstream pipeline leakage, but also ensure that the wax cleaning ball (especially the rubber ball) can pass smoothly through the valve cavity, fundamentally solving the problem of ball jamming in traditional lift check valves.

[0018] 3. Convenient maintenance: The ball receiving unit of this utility model is equipped with a bypass pipeline with a valve. When it is necessary to inspect or clean the ball receiving unit, the bypass can be opened to isolate the main unit, realizing maintenance without stopping production and greatly improving the convenience of operation and system operating efficiency.

[0019] 4. High adaptability and reliability: This utility model has a compact structure, simple process, and its installation position is not limited by the pipeline direction. It has sufficient strength and rigidity. At the same time, its key components have the characteristics of resistance to airflow erosion, scratch resistance, wear resistance, and corrosion resistance, ensuring that the device can operate safely and stably for a long time in harsh oilfield environments, and has broad prospects for promotion and application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a process flow diagram of this utility model.

[0022] In the picture: 1. Pressure monitoring unit; 2. Backflow prevention unit; 3. Ball receiving unit; 4. Bypass valve; 5. Inlet gate valve; 6. Ball receiving unit valve; 7. Main manifold; 8. Purge unit line. Detailed Implementation

[0023] 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.

[0024] like Figure 1 and Figure 2As shown, the oil collecting and ball receiving device provided by this utility model, in a preferred embodiment, can simultaneously handle multiple well site inlet pipelines. Each inlet pipeline is sequentially equipped with an inlet gate valve 5, a pressure monitoring unit 1, and an anti-backflow unit 2. The pressure monitoring unit 1 is used to detect the system pressure in real time and output a signal. In a preferred embodiment, the pressure monitoring unit 1 can be a pressure transmitter or a pressure sensor. The anti-backflow unit 2 is used to prevent fluid from flowing backward. In a preferred embodiment, the anti-backflow unit 2 can be a swing check valve, a lift check valve, or a one-way valve. After passing through their respective anti-backflow units 2, the incoming fluid from multiple inlet pipelines converges into a common main manifold. 7. Then, it enters a shared ball receiving unit 3, which is located downstream of the anti-backflow unit 2. It is used to receive and accommodate the dewaxing balls after the dewaxing operation is completed at the end of the pipeline. In a preferred embodiment, the ball receiving unit can be a ball receiving cylinder with an openable closed structure. When it is necessary to remove the dewaxing balls, the structure can be opened for operation. A bypass pipeline with valve 4 is connected in parallel at both ends of the ball receiving unit 3. The pressure monitoring unit 1 is set on a single set of inlet pipelines to monitor the pressure of a single set of inlet oil pipelines. The anti-backflow unit 2 is connected to the pipeline upstream of the pressure monitoring unit 1 and is configured to allow the fluid and dewaxing balls to pass through in one direction and prevent the fluid from flowing back.

[0025] Furthermore, the anti-backflow unit 2 is a check valve, which can automatically prevent fluid from backflowing and impacting the pressure monitoring unit 1.

[0026] The check valve is a swing check valve, which includes a valve disc that can rotate around a pivot. The swing check valve is configured such that when the inlet pressure is lower than the outlet pressure, its valve disc automatically closes under the action of fluid pressure difference and its own weight.

[0027] Furthermore, the ball receiving unit 3 is provided with a bypass pipeline, and a bypass valve 4 is provided on the bypass pipeline. Ball receiving unit valves 6 are provided at both ends of the ball receiving unit 3 pipeline. During device maintenance, the ball receiving unit valve 6 is closed and the bypass valve 4 is opened to activate the bypass pipeline.

[0028] Furthermore, the device is connected in parallel to multiple inlet pipelines, each of which is independently equipped with the pressure monitoring unit 1 and the anti-backflow unit 2, and finally connected to the shared ball receiving unit 3 after the pipeline is connected together.

[0029] Furthermore, the pressure monitoring unit 1 is a pressure transmitter.

[0030] Furthermore, a gate valve 5 is also provided at the inlet end of the pressure monitoring unit 1.

[0031] Furthermore, the ball receiving unit 3 is a ball receiving tube. Furthermore, the oil collecting and ball receiving device is configured to be flexibly installed on horizontal, vertical, or inclined pipelines according to the actual layout of the pipelines on site, without changing the structure of the device itself, thus having wide adaptability.

[0032] Furthermore, all flow-through components of the oil collecting and ball-collecting device are made of or treated with materials that are resistant to erosion, wear, and corrosion to adapt to the working medium. These flow-through components refer to all parts that come into direct contact with the transported medium (such as crude oil, oil-gas mixtures, and dewaxing balls). Specifically, in this embodiment, these mainly include, but are not limited to: the inlet pipe section, the inner wall of the ball-collecting cylinder, the guide elbow, the valve cavity and valve core, and connecting pipelines. These components directly bear the erosion, abrasion, and chemical corrosion of the medium, therefore, special requirements are placed on their materials. Working principle and process: Normal operating conditions: When the upstream well site pipeline is operating normally, valve 4 is closed and valve 6 is open. The oil and gas mixed transport medium enters the oil gathering and ball collecting device from the upstream inlet pipeline of the well site, flowing through the inlet gate valve 5, pressure transmitter, and swing check valve. The fluid pressure pushes the valve disc of the swing check valve to open, and the medium passes smoothly. During this process, the pressure transmitter continuously monitors and transmits the real-time pressure data of the pipeline. After the medium from all the inlet pipelines merges, it enters the main manifold and reaches the ball collecting cylinder of the ball collecting unit 3, where the wax-removing balls are captured. Subsequently, the clean medium is transported to the downstream station.

[0033] Anti-backflow operation: When a pipeline in an upstream well site leaks, causing its pressure to drop abnormally and fall below the downstream manifold pressure, the valve disc of the swing check valve on that pipeline will quickly and automatically close under the action of fluid pressure difference and its own gravity. This effectively prevents fluid from other normal pipelines from flowing back to the faulty pipeline through the manifold, thus avoiding crude oil loss and safety risks.

[0034] Maintenance conditions: When it is necessary to maintain or clean the ball receiving tube of ball receiving unit 3, the bypass valve 4 on the bypass pipeline can be opened first, and then the ball receiving unit valves 6 at both ends of the ball receiving tube of ball receiving unit 3 can be closed. This will isolate the ball receiving tube of ball receiving unit 3 from the process for maintenance. The production of the entire well group's oil pipeline can continue through the bypass pipeline without being affected.

[0035] Each of the aforementioned inlet pipelines is connected to a single-volume purging pipeline 8, which is normally closed and is used to purge or measure a single pipeline when needed.

[0036] This utility model device is particularly suitable for oil and gas mixed transportation conditions with a temperature of 10-20℃ and a pressure of 0.5-1.5MPa. By using stainless steel or wear-resistant and corrosion-resistant alloy materials for the flow-through components of the device, a long service life is ensured under these conditions.

[0037] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0040] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. An oil collecting and ball receiving device, characterized in that: It includes a pressure monitoring unit (1), an anti-backflow unit (2), and a ball collection unit (3); the pressure monitoring unit (1) is installed on the inlet pipeline and is used to monitor the pressure of a single oil inlet pipeline; the anti-backflow unit (2) is connected to the pipeline upstream of the pressure monitoring unit (1) and is configured to allow fluid and dewaxing balls to pass through in one direction and prevent fluid backflow; the ball collection unit (3) is installed downstream of the anti-backflow unit (2) and is used to collect dewaxing balls.

2. The oil collecting and ball receiving device according to claim 1, characterized in that: The anti-backflow unit (2) is a check valve, which can automatically prevent fluid from back-flowing and impacting the pressure monitoring unit (1).

3. The oil collecting and ball receiving device according to claim 2, characterized in that: The check valve is a swing check valve, which includes a valve disc that can rotate around a pivot. The swing check valve is configured such that when the inlet pressure is lower than the outlet pressure, its valve disc automatically closes under the action of fluid pressure difference and its own weight.

4. The oil collecting and ball receiving device according to claim 1, characterized in that: The ball receiving unit (3) is provided with a bypass pipeline, and a bypass valve (4) is provided on the bypass pipeline. Ball receiving unit valves (6) are provided at both ends of the ball receiving unit (3) pipeline. When the device is under maintenance, the ball receiving unit valve (6) is closed and the bypass valve (4) is opened to activate the bypass pipeline.

5. The oil collecting and ball receiving device according to claim 1, characterized in that: The device is connected in parallel to multiple inlet pipelines. Each inlet pipeline is independently equipped with the pressure monitoring unit (1) and the anti-backflow unit (2), and finally connected to the common ball receiving unit (3) after the pipeline is connected together.

6. The oil collecting and ball receiving device according to claim 1, characterized in that: The pressure monitoring unit (1) is a pressure transmitter.

7. The oil collecting and ball receiving device according to claim 6, characterized in that, An inlet gate valve (5) is also provided at the inlet end of the pressure monitoring unit (1).

8. The oil collecting and ball receiving device according to claim 1, characterized in that: The ball receiving unit (3) is a ball receiving tube.

9. The oil collecting and ball receiving device according to claim 1, characterized in that: The oil collecting and ball receiving device is configured to be installed in horizontal, vertical, or inclined pipelines.

10. An oil collecting and ball receiving device according to any one of claims 1-9, characterized in that: The flow-through components of the oil collecting and ball receiving device are made of materials that are resistant to erosion, wear, and corrosion, or have undergone appropriate treatment.

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