Fugro Environmental have conducted decommissioning, post-drill and monitoring surveys for clients in the oil and gas industry. These surveys typically include assessing the physico-chemical and faunal abundance and comparing the results with the pre-installation baseline survey to evaluate the impacts as a result of the development.
The equipment is industry standard and permanently mobilised on all vessels in the Fugro Survey Ltd. fleet. Specialist decommissioning equipment include ROV samplers and corers for working within 500m zones and processing contaminated sediments. Additional equipment and resources are stored and maintained at the Great Yarmouth office. Sediment Profile Imagery technology is available to readily quantify over 20 physical, chemical and biological parameters using camera photography and computer based image analysis.
When conducting post-drill and monitoring surveys it is essential that the same laboratory methodologies are followed for the physico-chemical analysis and faunal identification. This allows for accurate comparison of datasets and enables more robust statistical interrogation of the results. Sophisticated statistical packages are use to run analysis of similarities (ANOSIM) to assess significant differences between multivariate datasets. Parametric analysis of variance (ANOVA) are run on univariate physico-chemical data and faunal indices to assess any spatial or temporal differences within the samples.
The results are interpreted in detailed reports and comprehensively displayed in appropriately geo-referenced figures, using the latest Surfer contouring and 3D surface mapping software package.