In the process of oil field development, screw pumps, as a common fluid transportation equipment, have many advantages, such as simple structure, reliable operation, and high efficiency. However, there are also some risks during the operation of the screw pump. The risks will be discussed below in terms of mechanical failure, reduced pump efficiency, pump sealing problems, pump overheating, abnormal pump noise, abnormal pump pressure, electrical safety issues, improper operation and environmental pollution. Identify.
1. Mechanical failure
Risk description: Mechanical failure refers to the damage or performance degradation of the mechanical parts of the screw pump, causing the pump to fail to work properly. Mechanical failures may be caused by a variety of factors, such as poor equipment quality, improper operation, and inadequate maintenance.
Preventive measures: Choose screw pump products with reliable quality, operate in strict accordance with operating procedures, conduct regular equipment maintenance and inspections, and promptly discover and deal with potential mechanical failures.
2. Pump efficiency decreases
Risk description: Pump efficiency decrease refers to the decrease in efficiency of the pump in the process of transporting fluid, which is manifested as a decrease in pump output power or an increase in energy consumption. Decreased pump efficiency may be caused by factors such as bearing wear, reduced sealing performance, and pipe blockage.
Preventive measures: Regularly check the wear of key components such as bearings and seals, promptly replace components with reduced performance, and regularly clean the pipelines at the pump inlet and outlet to ensure that the pipelines are unobstructed.
3. Pump sealing problem
Risk description: A pump sealing problem refers to the deterioration of the pump’s sealing performance, resulting in fluid leakage. Seal problems can be caused by seal ageing, wear, or external environmental factors.
Preventive measures: Choose seals suitable for working conditions, regularly check the wear of seals, promptly replace seals with reduced performance, strengthen daily inspections of equipment, and deal with leaks in a timely manner if found.
4. Pump overheated
Risk description: Pump overheating means that the temperature of the pump during operation is too high and exceeds the allowable range. Overheating of the pump can cause damage to the equipment or shorten its service life. Causes of overheating may include worn bearings, degraded seals, excessive fluid viscosity or insufficient flow.
Preventive measures: Regularly check the wear of bearings and seals to ensure that the fluid flow and viscosity are within a reasonable range, strengthen the heat dissipation design of the equipment, regularly clean the sediments in the pump body, and maintain good heat dissipation of the equipment.
5. Abnormal pump noise
Risk description: Abnormal pump noise refers to the noise generated by the pump during operation exceeding the normal range, which may be caused by a variety of factors, such as changes in fluid properties, mechanical failure, reduced sealing performance, etc. Abnormal noise not only affects equipment performance but may also have adverse effects on operators and the environment.
Preventive measures: Regularly check the mechanical parts and seals of the pump to ensure their normal operation, select the appropriate pump type according to the properties of the fluid, strengthen the vibration reduction and noise reduction design of the equipment, and reduce the impact of noise on the environment and human body.
6. Abnormal pump pressure
Risk description: Abnormal pump pressure refers to pressure fluctuations or pressure values deviating from the normal range during pump operation. Abnormal pump pressure may cause equipment damage or affect fluid delivery efficiency. Causes of abnormal pressure may include pipe blockage, reduced pump sealing performance, motor failure, etc.
Preventive measures: Regularly check key components such as pump seals and bearings to ensure their normal operation, strengthen daily inspections of equipment, and promptly discover and deal with potential abnormalities.
7. Electrical safety issues
Risk description: Electrical safety issues include electrical faults, leakage, static electricity and other safety issues related to electrical systems. These problems may cause harm to equipment and operators, affecting production safety and personal safety.
Preventive measures: Choose reliable electrical components, ensure that the equipment is well grounded, strengthen daily inspection and maintenance of the equipment, and conduct regular electrical safety inspections to ensure the safe operation of the equipment.
8. Improper operation
Risk description: Improper operation may include failure to follow operating procedures, illegal operations, misoperation, etc. These actions may lead to equipment damage, production accidents, or personal injury.
Preventive measures: Strengthen the training and education of operators to ensure that they are familiar with operating procedures and safety precautions, establish sound operating rules and regulations, strengthen supervision and management, and ensure standardized and safe operating behaviours.
9. Environmental pollution
Risk description: Environmental pollution may include improper discharge and treatment of waste gas, wastewater, solid waste and other pollutants, causing adverse effects on the environment. In addition, the noise generated during the operation of the equipment may also have an impact on the environment.
Preventive measures: Strengthen the classification collection and treatment of waste, reduce waste emissions, adopt environmentally friendly equipment and processes, reduce noise generation and transmission, strengthen equipment maintenance and repair, and reduce the impact of equipment damage and leakage on the environment.
To sum up, the risk identification of oilfield screw pumps includes mechanical failure, reduced pump efficiency, pump sealing problems, pump overheating, abnormal pump noise, abnormal pump pressure, electrical safety issues, improper operation and environmental pollution. In order to reduce these risks, it is necessary to take corresponding preventive measures to strengthen the daily management, maintenance and overhaul of equipment to ensure safe, stable and efficient operation of equipment, while also paying attention to environmental protection and safe production.