Method

Advantages

Limitations

Statistic of Measured Data (Database)

Can be used to analyze a large amount of data quickly and efficiently.

Results can be affected by outliers or incorrect data.

Core Discing

Can be used to determine rock properties such as strength and stiffness.

Operated at 10-3 m3 rock volume.

Sample size is limited and may not be representative of the entire formation.

Borehole Breakouts

Can be used to determine the orientation of stress in the rock surrounding the borehole.

Operated at 10−2 - 102 m3 rock volume.

Results can be affected by borehole deviation and the presence of drilling-induced fractures.

Relief of Large Rock Volumes (Back Analysis)

Can be used to determine the location and size of large rock volumes.

Operated at 102 - 103 m3 rock volume.

Results can be affected by the accuracy of the data and the assumptions made during the analysis.

Acoustic Method (Kaiser Effect)

Can be used to determine the mechanical properties of rock.

Operated at 10−3 m3 rock volume.

Results can be affected by the presence of fluid in the pores of the rock.

Strain Recovery Methods

Can be used to determine the deformation of rock.

Operated at 10−3 m3 rock volume.

Results can be affected by the accuracy of the data and the assumptions made during the analysis.