Analysis of maintenance and management of explosion-proof equipment in oil drilling system

Oil resources are important resources applied in the development of modern social production, and have an important impact on social industrial production. The drilling process implementation is the main process of oil extraction, in the drilling process implementation, the use of modern drilling process system for production, so as to ensure that the efficiency of oil extraction is improved. However, in the application process of oil drilling system, drilling electronic equipment or mechanical equipment in the actual application process, the problem of explosion often occurs, thus causing a serious safety threat to oil drilling production. Therefore, in the process of oil resources production, should also focus on the reasonable application of explosion-proof equipment, do a good job in the maintenance and management of explosion-proof equipment, to enhance the overall protection of the oil drilling system.

I. oil drilling system explosion-proof equipment analysis

1, oil drilling system explosion-proof equipment application analysis

Oil drilling system explosion-proof equipment application is a common process in the application of oil drilling process, for the reasonable application of oil resources has a key role. In the oil drilling system work process, the application of modern electrical equipment is relatively more, so in the drilling system explosion-proof implementation, but also the application of different explosion-proof equipment. In the entire explosion-proof system application process, the main application of sealed, fireproof, positive pressure, explosion-proof, oil-immersed and other related equipment, the following analysis of different types of explosion-proof equipment:

(1) sealed explosion-proof equipment is mainly able to protect high-temperature equipment, in the oil drilling system, high-temperature equipment in the actual application process, easy to produce arc sparks, and then in the oil drilling process, there are also explosive problems. The use of sealed explosion-proof equipment, high-temperature equipment is easy to spray sparks position sealing treatment, enhance the application of drilling system safety.

(2) the application of fire-type explosion-proof equipment. In the drilling system equipment application process, cable application, mechanical device application may cause sparks or open flame problems, and then produce an explosion. The use of fire-resistant explosion-proof equipment can realize the mechanical sparks, impact explosion prevention.

(3) direct explosion-proof equipment. Direct explosion-proof equipment refers to the use of explosion-proof shell for explosion protection drilling system explosion-proof equipment. In the entire explosion-proof equipment application process, can realize the single fault equipment explosion isolation, thus preventing the occurrence of collateral explosion failure, thus realizing the effective prevention of explosion processing, to ensure that the implementation of explosion-proof failure is more reasonable.

2, drilling system explosion-proof equipment application level analysis

Drilling system application process, due to the different factors affecting the system, so the factors that cause the problem of explosion is also more, and according to the drilling system explosion impact level, the probability of explosion occurs differently also need to be divided into different levels of explosion-proof equipment.

(1) drilling system to implement the drilling process, the gas explosion problem is one of the more common problems, such as hydrogen sulfide gas in the mud pool area is prone to explosive failure problems. Therefore, the explosive gas analysis process should be completed in accordance with certain requirements of the explosion-proof level, the gas explosion prevention level is divided. Gas explosion explosion-proof level is set to Ⅱ B level.

(2) in the actual application of drilling equipment, spark explosion and open flame explosion level is relatively high, mainly due to the impact of spark explosion problem is relatively large, very easy to cause fire problems. Therefore, in the application of drilling equipment, the design of open-flame explosion-proof equipment is mainly Ⅱ A level.

II. oil drilling system explosion-proof equipment failure and maintenance methods summarized

Oil drilling system explosion-proof equipment application is very strict, not only need to use different types of explosion-proof equipment in accordance with the different needs of explosion-proof, but also in accordance with the explosion-proof requirements set different explosion-proof level. However, the oil drilling system is related to the extraction of the entire oil resources, so in the production chain, the drilling system needs to maintain a long time operation, and in the high-intensity, long-time working condition, the drilling system as well as the explosion-proof equipment will fail. Failure of explosion-proof equipment will cause explosion-proof performance to reduce, and even cause safety accidents. Therefore, in the current oil drilling system work process, should focus on explosion-proof equipment failure analysis and prevention of accidents.

(1) Explosion-proof clearance exceeds the problem. Oil drilling system explosion-proof equipment in the application process, the explosion-proof gap fault is very common, easy to cause the oil drilling system explosion risk. In the event of failure, the shell and cover between the fastening screws have been tightened, but the explosion-proof gap is still too poor. In the process of further analysis, the main reason for the explosion-proof gap failure is due to flange deformation, flange deformation leads to insufficient control of the explosion-proof gap, the sparks in the case overflow, and the external explosive gas to form an explosion accident. Oil drilling system explosion-proof equipment application process, should focus on the problem of explosion-proof gap failure to analyze and solve. In the actual solution process, you can choose to replace the flange to deal with the method, using a new flange device to control the explosion-proof gap, to prevent sparks from overflowing. At the same time, in order to reduce maintenance costs, you can also choose to repair the flange deformation problem, the use of screw wrenches can be completed to restore the flange, to achieve 95% to 100% of the deformation of the restoration, in order to ensure that the flange has a certain degree of explosion-proof ability to enhance the explosion-proof effect.

(2) the introduction of port problems. Oil drilling system explosion-proof equipment application also has the introduction of the mouth problem. In the application of explosion-proof equipment, explosion-proof distribution box using steel wiring, steel pipe into the ground before the isolation seal. Appearance of non-sealing, it will lead to spark leakage, gas leakage and flame propagation leakage and other problems, which will lead to successive explosion problems. The safety threat of the introduction port problem is relatively large, so in the application process of the oil drilling system, attention should be paid to the introduction port failure problem. Plastic compression nut mechanical strength is not enough, can not reach enough tightening torque, and due to the environmental impact, easy to appear aging phenomenon, can not press the seal ring to play the role of sealing is the main reason for the introduction of port failure, so in the actual introduction of the port fault handling process, you can complete the material replacement of compression nut, replacement of stronger sealing, compression nut is better mechanical nut for the compression nut. Effective control has a very important role, but also can improve the control effect of the compression nut. It can also reduce the introduction of port failure problems.

(3) Fastener problems. Fastener problems are also common explosion-proof equipment failure problems, the causes of which are very similar to the gap failure. The main reason is due to the implementation of good fastening of explosion-proof devices, resulting in explosion-proof clearance problems, followed by sparks or arcs and external flammable gas contact explosion. In addition, the fastening screws are not tightened, also easy to cause the problem of low explosion strength. In the process of fastener problems, you can use the replacement of fasteners for troubleshooting. In addition, if the explosion-proof equipment metal failure is relatively small, you can use a wrench to tighten the fasteners to enhance the explosion-proof performance of the device.

(4) grounding faults. Oil drilling system explosion-proof equipment failures include serious corrosion of the ground connection. Due to serious corrosion of the grounding connection, resulting in increased contact resistance, or even false connection. After the failure of the electrical equipment, the equipment shell is electrified, and it is easy for personnel to be electrocuted. Once an electrical spark is generated, it will lead to an explosion. For the grounding connector corrosion failure should be well handled to ensure that its fault handling application is more effective, but also to maximize the effect of fault handling.

In the grounding fault comprehensive treatment process, can be used to prevent and deal with two measures. (1) for the prevention process, mainly in the wiring process coated with anti-corrosion protective layer, to enhance the service life of the grounding line, while in the grounding line fault prevention process, the requirements of the grounding line should be built to do a good job of moisture-proofing treatment to ensure that the surrounding dryness, can enhance the preventive effect. (2) grounding fault solution process, the main treatment method is to replace the grounding wire, replace the new grounding wire can realize the contact resistance increase, so as to realize the effective solution of explosion-proof fault.

III. oil drilling system explosion-proof equipment failure factor analysis

Oil drilling system explosion-proof equipment failure directly caused by the oil drilling equipment safety hazards, so in the application of explosion-proof equipment, should focus on the failure of the factors affecting the analysis. In this paper, the research process for the oil drilling base of explosion-proof equipment failure problems, in its failure analysis process, for the oil drilling base of the explosion-proof failure research, in the whole research found that in the year 128 explosion-proof equipment failure, 17.8% is due to the hidden problems caused by the electrical equipment, there are improper mechanical operation factors accounted for 26.1% of the impact of the failure, the maintenance of the failure of 36.1%. Timely failure accounted for 36.1%, other failures for about 10%. The following factors are analyzed:

(1) explosion-proof equipment in the application process, the impact of safety hazards is relatively large, easy to the application of explosion-proof equipment to cause certain effects. For example, in the operation of explosion-proof equipment, equipment operating temperature and humidity factors will cause a certain impact on the equipment. In terms of the problems summarized above, explosion-proof equipment wiring failure problems, is due to the corrosive effect of the grounding wire, thus forming a corrosion problem. And the corrosion problem is caused by changes in air temperature and humidity.

(2) mechanical operation failure factors. Drilling process implementation process, the application of mechanical devices and mechanical operation implementation is very critical. However, due to improper mechanical operation, it will also cause explosion-proof failure problems. For example, in the actual drilling implementation process, there is a drilling machinery on the explosion-proof device shell damage problems, resulting in explosion-proof equipment failure problems.

(3) maintenance work is not in place. In the petroleum explosion-proof equipment maintenance, the lack of systematic system, equipment maintenance, operation and integrated management has not formed a unified efficiency, the departments have not reached a good cooperation, although each department has its own responsibilities, but due to the entire explosion-proof device and drilling system has a holistic, if the management and operation and maintenance of the links to the problem of disconnect, it will also result in the maintenance of the device in place of the problem, which affects the actual maintenance effect. In addition, the lack of management systems and related systems, operation and maintenance personnel in the work, there is also a “formalized” problem, many coal mine equipment maintenance personnel in the routine work, the lack of attention to equipment maintenance, the emergence of minor faults lack of rapid processing mechanism, thus affecting the failure to deal with the effect.

(4) in the process of explosion-proof device application, causing device failure of other factors are relatively more. For example, in the selection process of the device, there are explosion-proof level is not suitable for drilling equipment, thus affecting the application of explosion-proof equipment. In addition, the installation process of explosion-proof device is not in place, also easy to cause failure problems. Therefore, in its fault handling process, should focus on the explosion-proof fault comprehensive analysis.

IV. oil drilling system explosion-proof equipment management points implementation

Oil drilling system explosion-proof equipment management, for the comprehensive application of oil drilling system has a very important role, can maximize the application of oil drilling process. In the face of oil drilling system explosion-proof equipment failure, should focus on strengthening the oil drilling system explosion-proof equipment management, through the management and maintenance of good implementation, to enhance the application of explosion-proof equipment.

(1) rational selection of explosion-proof equipment. Reasonable selection of explosion-proof equipment can enhance the failure prevention effect of explosion-proof equipment, choose the equipment suitable for oil drilling system, can reduce the environmental factors, other factors on the impact of explosion-proof equipment.

① In the process of selecting equipment, should be used in accordance with the type of equipment for comprehensive analysis of faults, to ensure that the prevention of faults is more reasonable. For example, in the application of drilling system equipment, cable applications, mechanical devices may cause sparks or open flame problems, followed by an explosion. The use of fire-type explosion-proof equipment can be realized on the mechanical sparks, the impact of the problem of explosion prevention.

② according to the explosion-proof level of reasonable choice of equipment. Currently, according to relevant legal literature, oil drilling system explosion-proof equipment is mainly divided into Ⅱ A, Ⅱ B, Ⅱ C, etc., in accordance with the needs of different explosion-proof level, to complete the effective processing of explosion-proof technology to ensure that troubleshooting is more effective, but also enhance the effect of explosion-proof troubleshooting to ensure that the implementation of its explosion-proof is more reasonable and effective, to enhance the effectiveness of explosion-proof device applications.

(2) do a good job of faulty maintenance. The above article summarizes the equipment application process, the lack of a systematic maintenance system, resulting in poor maintenance results and other issues. Therefore, in the application process of explosion-proof equipment failure, should focus on the comprehensive treatment and analysis of explosion-proof failure, while establishing a good maintenance system.

① Do a good job of regular maintenance and comprehensive maintenance program. Oil drilling explosion-proof equipment application cycle is long, and the use of high intensity, so it should be a good regular maintenance program, regular part of the explosion-proof equipment for fault checking, to complete a good treatment of minor faults, to prevent the escalation of faults. In addition, the maintenance process, should establish a good comprehensive maintenance work. Not only for explosion-proof equipment failure repair, but also for other electrical equipment failure repair, through a comprehensive maintenance work, to complete a comprehensive treatment of the fault, to prevent the failure of the collateral effects.

② The use of scientific and reasonable fault handling methods. The above summarizes the application of explosion-proof devices in the process of wiring corrosion faults, explosion-proof gap faults and other problems, but also puts forward the fault handling methods. In accordance with the above troubleshooting methods to prepare a scientific and reasonable common troubleshooting program and troubleshooting process, through good troubleshooting to ensure that the application of explosion-proof devices more reasonable.

③the fault handling process, should also establish a good cleanup and cleaning program to ensure that the operating environment of the equipment, but also to maximize the application of explosion-proof devices, so as to achieve the good application of explosion-proof devices, improve the quality of equipment handling.

(3) explosion-proof device installation and use of standardized development. The above article suggests that the explosion-proof device application process, poor installation process, poor use will cause failure problems. Therefore, in the current explosion-proof device failure prevention process, the requirement to do a good job of explosion-proof device installation and use of the process system, requiring the use of personnel in accordance with the installation and use of the process of failure prevention and treatment, to ensure that the failure of the treatment is more effective, to enhance the effect of fault handling.

Conclusion

This paper analyzes the maintenance and management of explosion-proof equipment for oil drilling system, the article briefly describes the faults and factors affecting the explosion-proof equipment for oil drilling system, and also puts forward the fault handling methods and equipment management methods. Hopefully, it can help the good application of explosion-proof equipment in oil drilling system.