Sensitivity study

Work undertaken to determine the likely sensitivity of electromagnetic surveying for a given geological situation.

Fast 1D (plane layer) modelling based on known or assumed parameters is used to provide rapid analysis. This helps to show whether the detection of economic reservoirs using electromagnetic methods is likely in a particular geological setting.

If the decision is made to proceed, a realistic and detailed 3D resistivity model is constructed and used to run a series of virtual surveys. This process helps to verify that an electromagnetic survey will add value. It also helps optimise the survey design, for example, by ensuring that most appropriate receiver spacing and source frequency mix are used.