Geomechanical Data


One of the ways to physically test mechanical properties of rocks is through special core analysis. Many of these original core analyses no longer exist or were never carried out on the formations that are now prospective gas intervals.  The Core Database for UKCS wells provides us with the available SCAL data to calibrate our geomechanical properties. As a Release Agent we have access to all exploration, appraisal and development data for the UKCS.

CGG can now offer a Geomechanical Dataset alongside our Formation Description Logs for all UK Wells."

We understand how important it is to have a reliable set of mechanical properties and stress directions in order to develop models of the sub-surface.

With the increasing need and interest in the UK’s shale deposits, CGG has digitized and composited all available data for UK onshore wells to present them in a modern, corrected, workstation-ready product.

  • Data available for UK Onshore Wells 

  • Thoroughly QC’d and corrected data 

  • Shear data has been created using a combination of popular methods 

  • Geomechanical properties 

  • Minimum and maximum horizontal stress identification 

The elastic and mechanical properties are an important factor affecting many aspects of drilling and the completion of wells. The outputs of this data can be incorporated into a Mechanical Earth Model for further modelling.

The sonic log can provide an incredible amount of information about a formation, especially if the shear sonic data is available. Unfortunately this is not always the case, especially in heritage data. There are a large number of theoretical and empirical methods recognized as providing an estimate of shear sonic data. Stringent QC is performed to make sure that the sonic data being used is of high quality and that any data has been corrected for the borehole environment prior to use.

We can combine the compressional and shear sonic data with density to provide us with the elastic properties of a rock. This can identify qualities of a rock like brittleness and the areas that might be more susceptible to hydraulic fracturing compared to others.

Geomechanical property includes:

  • Bulk Modulus 

  • Shear Modulus 

  • Poisson’s Ratio 

  • Young’s Modulus 

  • Fluids Brine 

  • Fluids Dry Gas 

  • Pressure Gradient 

  • Temperature Gradient 

  • Shear Velocity 

  • Compressional Velocity 

  • Empirical velocity 

  • Minimum and Maximum Horizontal Stress 

  • Calliper 

Data Management - Aberdeen


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Formation Description Logs

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