Drill cuttings on the sea bed. Field experiment on recolonization and chemical changes. Phase 1. Adjoined biotests
1986
Bakke, T. | Ormerod, K. | Bakke, T. - Project manager
Acute toxicity of four types of water and oil based drill cuttings were tested by a series of biotests before and after 9 months exposure on the sea floor at 11 meters depth. Generally the cuttings were ranked with decreasing toxicity in the following way: diesel washed cutting - briquetted diesel cuttings - low aromatic cuttings - water based cuttings - sea bed sediment (reference). Exposure on the sea floor did not significantly change this order of ranking, but the oil based cuttings became more toxic with time to some organisms (shrimps, cod larvae), less toxic to others (algae, barnacle larvae, cod eggs)
显示更多 [+] 显示较少 [-]Mobil Exploration Norway Inc. on behalf of the Statfjord Unit Owners
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