The domestically produced CPLog instrument was slowly pulled out of the wellhead, marking the completion of the logging construction of the deepest geothermal well in Xiongan New Area, Anre 1 well. The success rate of instrument lowering into the well reached 100%, and the rate of excellent data reached 100%.
Anre 1 Well is a geothermal test well located in the northeast of Anxin County People's Government in Xiong'an New Area. It is designed to have a vertical depth of 4,500 meters and a completion depth of 2,002 meters. After receiving the logging task, PetroChina Logging North China Branch actively carried out preliminary communication, technical exchanges, and reporting plans with Party A, and immediately established a technical management team. In view of the characteristics of large boreholes and soft formations that are prone to collapse, a large borehole centralizer was specially selected, and the instrument lowering speed was strictly controlled. At the same time, the instrument was strictly calibrated for temperature to ensure that the relevant data of the geothermal wells were fully and accurately obtained.
During the construction, after the C4676 operation team of the branch arrived at the well site, they immediately held a multi-party coordination meeting to clarify the risk control measures. The operation engineer kept a close eye on the well logging curve, and the team leader conducted a thorough inspection and monitored the winch operation throughout the process. In the end, it took only 6 hours to successfully complete the measurement of 7 curves including well temperature, well diameter, and continuous inclination, completing all construction tasks at a high speed and efficiency.