Shallow geohazard analysis a growing area of concern

摘要

The last few years have seen a growing focus on the importance of shallow geohazard analysis offshore, with typical geohazards including shallow gas, abnormal pressure zones, gas hydrates, slope instability, and complex seabed morphologies. In all these cases, effective pre-drilling shallow hazard analysis is essential, with the results having a crucial impact on future production operations and drilling decisions. There are a number of benefits to conducting shallow hazard analysis in 3D seismic data as opposed to 2D. Chief among these is the increased spatial accuracy and the improved reliability of post- and pre-stack amplitudes.