DownholeFiguresTVAcceptance siteDiary
At 8 o'clock in the morning, I and the company's after-sales engineer came to the customer company early to wait and rushed to the equipment acceptance site with the personnel of the unit.
At about 9 o'clock in the morning, we arrived at the equipment acceptance site, and the well used for the acceptance was a groundwater monitoring environmental protection well, the monitoring range was 60 meters, and the diameter of the wellhead was 50mm. The problem of the well to be measured is that the pumping body of the sampling operation is lowered to the depth of about 40 meters of the monitoring well, and it is known that the depth of the well is 60 meters when the environmental protection well is drilled at that time, and the sampling is carried out at a depth of about 30 meters this year after the well is washed.
At this stage, it is necessary to sample and analyze the depth of about 40 meters of well, and the results can not be decentralized when the sampling pump is decentralized, and now it is necessary to check the well condition of the environmental protection monitoring well, whether the well itself is 40 meters or the sampling pump can not be decentralized. This requires the use of underground digital TV.
Like the general underground monitoring equipment, it is necessary to use a crane and install the heaven and earth wheel. And our underground digital TV instruments are easy and quick to assemble, small in size, and easy to carry. We only need to assemble the connection line and the probe, and our equipment includes data transmission section, storage section, image acquisition section and front and rear centralizer section, etc., which is very suitable for environmental monitoring wells.
The image effect after the well is good, and no fault points were found to be about 30 meters, which is consistent with the fault section of the pre-logging analysis may be between 40 meters. In order to better find the leakage, we continued to lower the probe slowly, and when we lowered it to 39 meters, we could faintly see a black object stuck in the wall of the well. At that time, we were all very happy, and finally found the problem, and then we continued to lower slowly, and when we approached the problem point, we saw a screen-like object stuck here through the overhead lens of our underground digital TV, and then we switched the look probe to look at some wellheads in the surrounding well wall, and fortunately there were only scratches but they were not affected.
The search for the problem is very successful, and it takes a short time, after packing up the equipment and returning to the customer unit, take out the recorded underground ** and screenshots to analyze the problem point, the customer leader through this ** clearly see a situation in the underground is very satisfied, not only to find the problem, but also to make the follow-up work can be carried out, and there is no need to consider the problem of re-drilling the well.