RESEARCH OF OPERATION MODES OF GAS WELLS IN COMPLICATED CONDITIONS

The influence of the properties of reservoir rocks on sand intrusions in wells is considered. It is concluded that the mountain rock should be considered not from the point of view of its strength, but from the point of view of the type of cementing substance and its distribution. When predicting sand manifestations, it is necessary to take into account the internal stresses of the rocks, and also the change in these stresses during drilling, perforation, and reservoir operation due to their violation initial state.

This article presents an analysis of the main causes of sand production during the operation of gas wells and the negative consequences of sand production for gas production equipment. It has been established that water breakthrough, reservoir depletion, and pressure drop at the bottom of wells due to their frequent shutdown are the main prerequisites for the removal of sand from the bottom hole formation zone. Sand mining is associated with such negative consequences as plugging in wells, erosion of underground and surface equipment, and collapse of the roof of the bottom hole formation zone and production strings.