The Waitsia-3 well will be drilled to a planned maximum total depth of 3706 m MDRT and is forecast to take approximately seven weeks in total to complete. The well is designed to appraise the gas potential in the southern extension of the Waitsia Field, with primary targets being conventional reservoirs in the Kingia and High Cliff Sandstones.
Waitsia-3 is the first of a two well appraisal drilling program planned for the Waitsia field in 2017.
David Biggs, CEO and Managing Director of AWE, said:
“Waitsia-3 and Waitsia-4 will be the last appraisal wells drilled prior to a Final Investment Decision (FID) for the Waitsia Stage 2 full field development. Both wells are expected to be completed as production wells if results are positive.
“AWE will review its Reserves and Resources for the Waitsia field at the completion of the two well drilling programme and prior to a FID.
“Stage 1A of the Waitsia Gas Project continues to exceed our pre-drill expectations. Excellent performance from multiple zones in the Senecio-3 and Waitsia-1 wells has confirmed a high quality conventional reservoir system in the Kingia and High Cliff Sandstones with excellent connectivity,” he said.
Waitsia Stage 1A supplies a Maximum Daily Quantity of 9.6 TJ/d under a 2.5 year take or pay agreement with Alinta. The gas from Stage 1A is produced via the Xyris Production Facility and delivered into the Parmelia pipeline where it is blended with gas from Beharra Springs to ensure it remains within pipeline specification for CO2.
“The quality of produced gas from the Waitsia field is very good with insignificant levels of inerts present. Methane constitutes 93% of produced gas and CO2 levels remain within our estimated range of 4 - 5%. This implies only minimal processing, such as simple CO2 extraction, will be required for Stage 2.
“Pre-Front End Engineering and Design (FEED) work for Stage 2 full field development is nearing completion and the joint venture will be in a position to commence FEED from June. The first term sheet for Stage 2 gas sales was agreed with AGL in February and we are aiming to contract substantial gas volumes in 2017 ahead of FID,” Biggs concluded.
The Waitsia-3 appraisal well is located approximately 19.8 km east-south-east of Dongara, Western Australia, and 10.8 km south of Waitsia-1. The approved work program for the Waitsia-3 appraisal well does not include hydraulic fracture stimulation.
The Joint Venture partners in L1/L2 are:
- AWE Limited (via subsidiaries) (Operator) 50.0%
- Origin Energy Resources Limited 50.0%