Sea Lion and West Seahorse Drilling Campaign (VIC/P57 and VIC/L31)
|Submitted by||Carnarvon Hibiscus Pty Ltd|
|Submission date||18 November, 2014|
|Decision date||08 July, 2015|
|Link to previously accepted EP|
Ms Leonie Chapman
Carnarvon Hibiscus Pty Ltd (‘CHPL’), as nominated titleholder (on behalf of a Joint Venture comprising of 3D Oil Limited and HIREX), under the Offshore Petroleum & Greenhouse Gas Storage (Environment) Regulations 2009 (‘Environment Regulations’) will undertake exploration drilling at the Sea Lion‐1 well location to explore for hydrocarbons resources in the Exploration Permit VIC/P57.
The Sea Lion‐1 location lies in a water depth of 24m in the Gippsland Basin approximately 6.5km from the Victorian coast. The coordinates of the well are - Latitude: 38o 10’ 28.34”S : Longitude: 147o 33’ 8.26’E
The Sea Lion‐1 exploration well will be drilled by the jack‐up MODU, West Telesto. At least one support vessel will be in attendance at the rig site at all times. Supply vessels will transit between Geelong (marine supply base location) and Sea Lion‐1 providing drilling equipment, casing and drill pipe to the MODU. Helicopter support, for activities such as crew change or medical emergency, will be based from Essendon.
Key activities are as follows:
Drilling of top‐hole sections using seawater and high viscosity sweeps;
Installation and cementing of steel casing in the hole;
Installation of a surface‐mounted blowout preventer;
Drilling of production section using a closed loop system for recirculation of water‐based muds (WBM) and separation of drill cuttings;
Drilling bottom hole section to the planned depth;
Formation evaluation and logging including Vertical Seismic Profiling (VSP); and
On completion, the well will either be plugged and abandoned, or suspended.
Drill cuttings generated during the drilling of the top‐hole sections will be discharged directly to the seabed. For the bottom‐hole section, drill cuttings will be returned to the drill rig and discharged at sea surface.
Drilling of the Sea Lion exploration well is expected to commence in Q3 2015 with the well taking approximately 25‐30 days to drill (weather dependent).
Note: This information has been extracted from the EP Summary. Please refer to the attached EP Summary for more information.