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Borehole Geophysical Surveys / +44 (0)1939 210 710

Interpretation and reporting

In addition to the on-site capturing of well log data, EGS can further increase the value of an investigation by offering a comprehensive data processing, interpretation and reporting service.

All log data is verified, depth matched and borehole-corrected and can be digitised and composited in cutting edge software to suit any individual needs.

Visual well condition reports

A well condition report can help you identify any possible defects/unwanted ingress or casing leaks and plan for any remedial action. Data can be presented in a choice of formats such as digital video files and schematic construction logs.

Casing investigations – condition, thickness and cement-bond

We can help evaluate casing condition in existing, new-drill wells and decommissioning projects in a variety of ways. We can ascertain casing thickness, locate joins and collars, and determine cement-bond. We have experience in logging water and potable water boreholes, geothermal, solution mining and hydrocarbon boreholes.

Flow properties in groundwater studies

Interpretation of flowmeter logs can determine depth, direction and rate of groundwater flow in both individual well and across multi-well sites. This type of data is useful in a range of projects, from mineral water investigations to pollution control studies.

Litho-stratigraphic interpretation

Formation log interpretation can determine lithology and stratigraphy in a given borehole, identify zones of interest such as coal seams, marker beds or mineralised zones and correlate these across boreholes to provide a clear sub-surface picture. This can be used to reduce the need for costly top-to-bottom coring programmes by enabling more accurate spot-coring.

Mechanical and physical rock properties

Processing and interpretation of sonic (seismic) logs can help obtain a range of rock strength properties such as P- and S-Wave velocities, Poisson’s Ratio, Shear-, Bulk- and Youngs Modulus. Processing of radiometric logs can yield bulk density and porosity data, while fracture analysis can obtain stress-vector and rock-quality information.

Structural image log interpretation

We can interpret borehole image logs to provide information on structural features such as discontinuity type, dip, dip-direction, aperture and frequency. Structural information is corrected from apparent dip and direction to true dip and direction and can be referenced to magnetic or true north.