Use the Thermometer Skillfully to Eliminate Hidden Dangers in Time
Infrared thermometer is very sensitive to temperature, with high concentration, the temperature measurement range can be controlled within the range of 3 mm in diameter, and the temperature measurement distance can reach more than 10 meters. Temperature and its changes, so as to diagnose the problems of the equipment, and provide a reliable guarantee for preventing hidden dangers of equipment accidents. On the basis of on-site practice, technicians and worker technicians of Shengli Oilfield Gudong Oil Production Plant successfully used it to find pipeline leakage points and find abnormalities in electrical equipment, which brought many conveniences to the oilfield development site process and equipment management, and greatly reduced the workload. , reducing the difficulty of management.
Check for leaks with half the effort
For a long time, the single-well pipeline for polymer injection has often been punctured, leaked and perforated. Some of the puncture points are at a depth of 30-100 cm below the cement floor inside and outside the building of the polymer injection station. In order to repair the puncture point, it is first necessary to find the puncture point.
Inspired by the temperature-sensitivity of infrared thermometers, the technicians of Gudong Third Mining Center skillfully used the thermometers to quickly and accurately find the puncture points of pipelines under the cement floor inside and outside the station, achieving twice the result with half the effort.
Under normal circumstances, what is transported to the wellhead in the pipeline of the polymer injection well is a mixture of polymer mother liquor and sewage, and the temperature is about 40°C. Due to the different degrees of compaction and density of the underground cement and underground soil layers, the size of the pores is also different. The mixed solution from the leaking point migrates along the point with the highest porosity, turns and extends, and can be transferred for a maximum length of more than 10 meters. Then overflow from the weakest point, the overflow point. During the transfer of the mixture, the temperature gradually decreases, that is, the overflow point has the lowest temperature, while the puncture point has the highest temperature.
Therefore, when actually looking for leaks, as long as you hold the thermometer and move the thermometer along the path of temperature increase from the overflow point, as you approach the leak point, the temperature displayed by the thermometer will gradually increase until it reaches the highest temperature. Find the highest temperature point and find the puncture point. Multiple leak-finding tests have proved that using a thermometer to find puncture points saves time and effort, and the accuracy is 100%. This method can greatly reduce the scope of smashing the cement ground, reduce labor intensity and downtime of the polymer injection well, and improve work efficiency.
Since 2009, the above suggestions have been used to find leaks for 15 well times, with a success rate of 100%, shortening the pipeline processing time by 6 hours/well time on average, increasing the injection volume of polymer solution by 680 cubic meters, and reducing the time of shutting down for polymer injection.
Eliminate hidden dangers "heatstroke prevention and cooling"
At around 9 am a few days ago, the temperature in the polymer injection pump room was as high as 30°C. Wang Laiqing, the station manager and worker technician of the No. 8 injection station, started to inspect the injection equipment one by one with an infrared thermometer in his hand. Suddenly, he found that the crankcase temperature of a polymer injection pump was 2℃ higher than the previous day. If this hidden danger is not eliminated in time, it will directly endanger the normal operation of the polymer injection pump. So, he immediately set out to find out why. Analyzing that the operating frequency of the equipment has not changed, and checking that the motor current has not changed from the past, the possible temperature rise caused by the increase in equipment load has been ruled out, so he looked up the record of adding lubricating oil and asked about the situation of adding lubricating oil at that time. It turned out that the label of lubricating oil added was wrong. With the replacement of lubricating oil, the hidden danger of accident was eliminated in time.
Now, due to the reduction of the injection volume of the mother liquid in the polymer injection well, the operating frequency of the polymer injection pump is low, and some pumps operate at a frequency of about 18 Hz, which causes the motor to heat up and the temperature of the lubricating oil in the crankcase to be high. The temperature of some motor casings is close to 60°C, and the temperature of the lubricating oil in the crankcase is also above 50°C, which brings great hidden dangers to the long-term reliable operation of the equipment. Therefore, the workers use thermometers to intensively check the temperature of the motor casing, bearings and various parts of the crankcase of the polymer injection pump every day, and make records, and do the following "heatstroke prevention and cooling" work for the equipment in time.
One is to open the doors and windows of the pump room to speed up the air convection in the pump room and prevent the temperature rise of the motor and crankcase from being too high. The second is to take measures to remove the valve to increase the pump speed and reduce the low-speed operation of the motor. The third is to explore a reasonable lubricating oil filling level. When it is found that the temperature of the lubricating oil in the crankcase is too high, add lubricating oil to the pump running at low frequency to increase the liquid level and prevent the temperature from rising too high.
