Cleverly using a thermometer to promptly eliminate hidden dangers
Checking for omissions is twice the result with half the effort
Over the years, there have been frequent occurrences of perforation and perforation in single well injection pipelines. Some of the puncture points are located 30-100cm below the cement floor inside and outside the injection station building. In order to repair the welding puncture and leakage points, it is necessary to first find the puncture and leakage points.
Inspired by the temperature sensitive characteristics of infrared thermometers, technicians at Gudong Third Mining Center cleverly used thermometers to quickly and accurately locate the leakage points of pipelines under the cement ground inside and outside the station, achieving twice the result with half the effort.
In general, the mixture of polymer mother liquor and sewage is transported to the wellhead in the polymer injection well pipeline, with a temperature of about 40 ℃. Due to the varying degrees of compaction and density of underground cement and soil layers, as well as differences in pore size, the mixed liquid coming out of the puncture point migrates along the areas with high porosity, turning and extending, and can transfer for more than 10 meters. It then overflows from the weak point, which is the overflow point. During the transfer process of the mixed liquid, the temperature gradually decreases, that is, the overflow point temperature * is low, while the puncture point temperature * is high.
Therefore, in actual leak detection, as long as the handheld thermometer starts from the overflow point and moves along the path of temperature increase, as it approaches the puncture point, the temperature displayed by the thermometer gradually increases until it reaches a high temperature. Once the high temperature point is found, the puncture point is found. Multiple leak detection tests have proven that using a thermometer to locate the puncture point is time-saving and labor-saving, with an accuracy of 100%. This method can greatly reduce the scope of smashing cement on the ground, reduce labor intensity and downtime of polymer injection wells, and improve work efficiency.
Since 2009, the above suggestions have been used to identify leaks 15 times, with a success rate of 100%. The average pipeline processing time has been shortened by 6 hours per well, the injection volume of polymer solution has been increased by 680 cubic meters, and the shutdown time for polymer injection has been reduced.
Eliminating hidden dangers and preventing heatstroke and cooling down
A few days ago at around 9am, the temperature in the polymer injection pump room reached as high as 30 ℃. After Wang Laiqing, the head of the No. 8 polymer injection station and a worker technician, took up his post and began inspecting the polymer injection equipment one by one with an infrared thermometer in hand. Suddenly, he noticed that the temperature of the crankcase of a polymer injection pump had increased by 2 ℃ compared to the previous day. If this hidden danger is not eliminated in a timely manner, it will directly endanger the normal operation of the polymer injection pump. So he immediately began to investigate the cause. After analyzing the operating frequency of the equipment and checking that the motor current did not change compared to the past, it was ruled out that the possible temperature increase caused by the increase in equipment load was ruled out. Therefore, he searched for the record of adding lubricating oil and inquired about the situation of adding lubricating oil at that time. Originally, the added lubricating oil had an incorrect grade. With the replacement of lubricating oil, the hidden dangers of accidents were promptly eliminated.
Now, due to the decrease in the injection volume of the polymer injection well mother liquor, the operating frequency of the polymer injection pump is relatively low. Some pumps operate at a frequency of around 18 hertz, resulting in motor heating and high lubricating oil temperature in the crankcase. Some motors have shell temperatures close to 60 ℃, and the lubricating oil temperature in the crankcase is also above 50 ℃, which poses significant risks to the long-term operation of the equipment. So, employees use thermometers to check the temperature of the motor casing, bearings, and various parts of the polymer injection pump crankcase every day, and keep records. They promptly provide the equipment with the following aspects of "heatstroke prevention and cooling" work.
