Wellsite geohazards are a demonstrable problem in many basins around the world, and often manifest as shallow gas or shallow water inflows. These features can be identified from seismic amplitude data. However, the magnitude of the pore pressure is compromised due to a general lack of log and other data due to the depth of the 20 inch casing shoe (which can be >4000 feet in some basins). Understanding the magnitude of this anomalous pressure has implications for site investigation but also for planning of wells to assess deeper stratigraphic target.
Geohazards and geopressure are intimately linked within the overburden; it is this real-world connection that forms the basis for a collaborative approach to their analysis and understanding. Both geohazards and geopressure have to be considered when planning a well: Fugro Geoconsulting and Ikon Science say that it makes sense for these factors to be assessed and considered together in a single project, with integrated deliverables to the client.