Yoorn-1, Jelen-1 and Parnassus-1 Exploration Drilling and Geophysical Survey

Closed 13 Dec 2021

Opened 12 Nov 2021


Full details of this EP including published Documents.
All open for comment EP's.
Santos WA Northwest Pty Ltd (Santos) proposes to drill three exploration wells in petroleum exploration permits WA-499-P, WA-546-P and WA-208-P, known as Yoorn-1, Jelen-1 and Parnassus-1 respectively.

The permits are in Commonwealth waters located approximately 103 kilometres, 87 km and 87 km respectively offshore from Dampier in Western Australia (WA).

As part of the preparatory work required to safely undertake the drilling, a geophysical site survey is required at WA-546-P and WA-208-P (Jelen-1 and Parnassus-1) to assess the shallow seabed soils suitability to provide a safe foundation for a jack-up Mobile Offshore Drilling Unit (MODU).

This Environment Plan (EP) covers the geophysical surveys at WA-546-P and WA-208-P, drilling activities at Yoorn-1, Jelen-1 and Parnassus-1 and all MODU, vessel, ROV and helicopter operations within the operational area (the activity).

The geophysical survey in WA-546-P and WA-208-P is planned for a window between Q2 and Q4 in 2022. Allowing for potential down time, for example due to weather, the activity may extend to up to 20 days.

Drilling activity durations for each well are estimated in the table below. Durations are dependent on operational down time, contingency operations (e.g. sidetrack or re-spud if required) and delays due to unfavourable weather.

Well Estimated Estimated
Duration Spud
Yoorn-1 90 days Q2–Q3 2022
Parnassus-1 50 days Q4 2023
Jelen-1 50 days Q4 2023

Providing your comment

The public comment process provides an opportunity for community members to have their say on environmental management aspects of proposed oil and gas activities. To make a submission click on the link below.

If your comments contain sensitive information or if you are unable to use this platform for any reason please refer to our Public comment on environment plans brochure for alternative options to have your say.

Please be aware that information that is irrelevant to NOPSEMA’s decision making criteria cannot be considered, such as statements of fundamental objection to oil and gas activity, comments that contain personal threats or profanities, SPAM mail, comments made through online social media channels, petitions and comments that pose questions to NOPSEMA and or/the titleholder. NOPSEMA takes threats of a personal nature seriously and will consider legal action should the public comment process be misused to make personal threats to any NOPSEMA employee.