The scope of the Plan and this Summary includes drilling, completion and well maintenance activities (the petroleum activities) undertaken by Chevron Australia with either a Mobile Offshore Drilling Unit or well intervention vessel within a 500 m exclusion zone at well locations within the Gorgon and Jansz-Io Gas Fields, or any potential relief well locations.
The Jansz–Io gas fields are located within production licenses WA-36-L, WA-39-L and WA-40-L approximately 200 km off the north-west coast of Western Australia in water depths of approximately 1,350 m (Figure 1-1).
The Gorgon Gas fields are located within production licences WA-37-L and WA-38-L approximately 130 km off the north-west coast of Western Australia, and 65 km north- west of Barrow Island.
The Gorgon Gas Development has an anticipated life span of approximately 40 years.
The Plan covers petroleum activities within both the Gorgon and Jansz-Io Fields for a period of 5 years. At the end of this period, a revision of the Plan will be submitted to the Regulator for reassessment in accordance with Regulation 19 of the OPGGS(E)R. Specifically, the maximum duration (in whole years) of drilling activities:
Infill drilling – 2 years of 5 year EP duration;
Exploration and appraisal activities – 1 year of 5 year EP duration;
Well maintenance (scheduled or non-scheduled) – 1 year of 5 year EP duration; and
Plug and Abandonment of existing wells – 1 year of 5 year EP duration.
Once on location, individual drilling or well intervention activities are expected to take between 30 to 60 days to complete, at which time the MODU would move location or be demobilised from the field.
 
Note:  This information has been extracted from the EP Summary. Please refer to the attached EP Summary for more information.