Research and application of combined wall protection technology for drilling in a certain gold mine

Abstract:

During the drilling construction in a gold mine in the western mountainous area， multiple layers of severely fractured strata were encountered. Punching was used to deal with the accident， which took a long time and resulted in multiple collapse accidents during subsequent construction， making it difficult to proceed smoothly. The single method such as casing wall protection， cement slurry wall fixation， and flushing liquid wall protection， cannot meet the construction requirements due to economic， construction period， safety， and other reasons. For this purpose， a combination of casing， cement slurry， and green anti collapse flushing solution was used for wall protection during construction. The upper fractured formation was protected by casing， the middle fractured formation was reinforced with cement slurry， and the lower fractured formation was protected by green anti collapse flushing solution. Practice has proven that this method has shortened the project duration by 33.56% and saved 11.70% of the costs， providing valuable experience for drilling in similar geological pits.