Importance of Well Monitoring to Generate Correct Diagnostics and to Solve Formation Damage Problems—Case Studies

In highly unconsolidated formations, the production of<br>formation fluids is associated with the production of<br>formation sand. Sand production leads to reduced<br>productivity and excessive maintenance to both<br>downhole and surface equipment in most cases. Mostly<br>applied sand control method in Serbia is gravel pack,<br>and almost third of total oil production comes from wells<br>with gravel pack.