Offshore well - oil/gas (market for offshore well - oil/gas)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. This is an immobile infrastructure representing the drilling of an offshore well for oil or/and gas exploration extraction. The infrastructure represents all the types of offshore drilling. The rotary drilling method is predominantly used in wells for finding and producing oil/natural gas. The offshore drilling activity requires space for both supply and disposal. A temporary area of about 0.2 ha is required for the storage of the roughing cement and other supplies (chemicals fuels) for a well of about 3 400 m depth. The drilling time is about 2 months. The stress on the benthos (animal and plant life of the seabed) as a disposal site is assumed for the duration of one year. Thus per meter drilled about 260 m2 of seabed is severely impacted. The process includes all energy uses materials and emissions for drilling of an offshore bore hole and finishing of the well. No differences depending on depth of sea and type of geological formation are taken into account. The cut-off classification is allocatable product. The activity type is market activity. The reference product amount is 1.