K voprosy analiza sil trenia voznikausih pod dejstviem staticeskih nagruzok pri likvadacii prihvativ buril’noj kolonny

The analysis of frictional force, arising up at freeze liquidation under the action of the static loadings of drill column is conducted. The results of analysis testify that the task of liberation of the frozen column under the action of the static loading has stochastic character: calculations made with and without taking dry friction into account give high and low bounds of values of longitudinal force, here the exact value of longitudinal force, between these scopes, has а character of stochastic variable. Decreasing longitudinal force is possible by diminishing of coefficient f due to utilizing more active liquids for arranging baths, and also utilizing vibration and impact devices.