Shallow Geophysical Techniques During Underwater Gas Pipeline Inspection

The methods and results of the monitoring of the trunk gas pipeline underwater transitions, connecting the largest West Siberian gas deposits with the European part of Russia and Western Europe, are considered. The conditions of the pipeline position under the bottom of a water barrier and their impact on the bottom soil mass movements on the pipeline conditions were investigated, and failure areas were identified. Based on the obtained data, a short-term forecast of the bottom soil displacement dynamics was made and recommendations for preventive maintenance and repairs were prepared.