Routine maintenance of slotted casing

Slotted casing is a kind of filtering equipment, which consists of three parts: support rod, mesh and pipe body. The support rod should be made of materials with high tensile strength and good corrosion resistance, such as stainless steel, high-strength steel, etc. The stainless steel connection method uses flange connection. Slotted casing is widely used in petroleum, chemical industry, food, pharmaceutical, environmental protection and other fields. It can effectively purify the medium and meet the requirements of various production processes. So do you know how to properly maintain and service slotted casing in daily life?

Selection of slotted casing

When selecting slotted casing specifications, factors such as the flow rate, viscosity, and pressure of petroleum liquids need to be taken into consideration. Generally speaking, smaller mesh sizes will filter out smaller particles, but will also slow flow and increase the risk of clogging. For substances with high flow, low viscosity, and large particles, you can choose a slotted sleeve with a larger outer diameter and length to ensure sufficient flow and passing area. During use, you also need to pay attention to the cleaning and replacement cycle of the tube, and clean or replace the slotted casing in time to ensure normal filtration efficiency.

Processing and assembly of slotted casing

Slotted casing require processing and assembly before use. During this process, you need to pay attention to the following aspects:

1. The processing and rolling of grooved casing must be appropriate. If the pressure is too small, the solder joints will not be strong; if the pressure is too high, the structure of the screen tube will be damaged and bring hidden dangers to use;

2. The welding requirements of pipes are high, and they must be firm, even, and defect-free, because the pipes will withstand considerable external force when in use;

3. When assembling, pay attention to the tightness of the interface to avoid leakage.

Cleaning and maintenance of slotted casing

Before use, the slotted casing must be cleaned to ensure that there are no impurities remaining inside the entire tube. Usually, cleaning agents are used for cleaning. After cleaning, the tubes also need to be maintained. This is also very important. If it is neglected, it will affect the performance of the tube.

During the use of the slotted casing, if the resistance is found to increase, it means that a large amount of debris has accumulated inside the pipe. At this time, the screen tube needs to be disassembled and cleaned in time. When cleaning, pay special attention to not scratching the grooved sleeve to avoid affecting the filtering effect. After cleaning, dry it in time

Installation and protection of slotted casing

When installing slotted casing, attention should be paid to reasonable layout to ensure the smoothness and efficiency of the entire production process. When installing, you need to pay attention to the following points:

1. The installation location must be appropriate. You should choose a location with good ventilation and light. At the same time, you should avoid direct exposure to sunlight, rain and snow to avoid damage to the slotted casing.

2. Avoid damaging the slotted casing during installation. If secondary processing is necessary, be careful not to damage the structure of the slotted casing and take protective measures.

3. Effective protective measures must be taken during use. For example, set up protective railings around the pipe to prevent unnecessary vandalism.

Inspection and replacement of slotted casing

Slotted casing will inevitably be damaged during use, and the effective service life of the pipe is also limited. Therefore, regular inspection and replacement are required during use. During inspection, attention should be paid to preventing high-pressure water impact, scratches, etc. Each inspection should be recorded and the use of slotted casing should be noted in the record. When replacing the grooved casing, it is necessary to select the appropriate pipe, and it also needs to be cleaned and maintained after replacement.

The characteristics of slotted casing in these two aspects can be summarized as follows

Advantages: The completion process is simple, the construction time is short, the cost is low, no filling is required, the safety factor is high, the completion cycle is greatly shortened, the operation efficiency is improved, and a lot of material and financial resources are saved.

Disadvantages: The sand control accuracy is not high, the sand control effect is short, and there is no filling method for oil well production. In large open-hole completions, the slotted casing is easily blocked by sediment, etc., and it is necessary to increase production and repair the well. If you want higher accuracy, you can choose oil screen casing, compared with slotted casing, it is more expensive and more suitable for environmental engineering or water resources management projects with higher filtration accuracy.

In short, the correct use of slotted casing is very important in the production process. Only correct and reasonable use and maintenance can ensure its function and safety and inject stronger power into our production work.