Project Profile
Location: 180km east of Port Hedland, Canning Basin, onshore north-western Australia
Area: 3,614 sq km
Drilling Depth: 2,000-3,000m
STP-EPA-0107 is located onshore north-western Australia in the Canning Basin. The area comprises 45 graticular blocks with an area of approximately 3,614 sq km. STP-EPA-0107 is 180km east of Port Hedland and close to the Pilbara Mining District. The potential to access significant mining infrastructure (roads, railways, airstrips, gas pipelines etc.) make this a unique area of the Canning Basin.
STP-EPA-0107 contains the Wallal Graben which is interpreted to be over 5.5 km deep in this area. Proven, organic-rich Ordovician source rocks have been penetrated by numerous nearby wells to the east and are interpreted to have been deposited within the Wallal Graben. The possible presence of these source rocks, numerous potential reservoirs coupled with a mid-basin ridge evident on the seismic data make STP-EPA-0107 a prospective block. The dominant northwest/southeast structural grain of this area has been set up by extensional tectonics in the Ordovician.
The Ordovician extension initiated the growth of a major rotational fault that forms the south-west margin of the Wallal Graben with down to northeast rotation. 2D seismic data interpretation clearly defines a “mid-basin ridge” structure that consists of a tilted fault block from Basement to late Ordovician levels and associated anticlinal drape of the overlying Devonian and Permian sediments. This structure (Prospect A) extends for in excess of 20 km on the interpreted seismic data with its northern extent located in adjacent STP-EPA-0106. Potential exists for a “roll-over” structure along the main basin margin fault system and also a sub-crop play along the eastern margin of the half graben. These constitute higher risk plays but will comprehensively interpreted and evaluated.
The Goldwyer Formation unconventional play may exist within STP-EPA-0107. This target is interpreted to be favourably located in the oil/condensate maturity window and is within easy drilling depth (2,000-3,000m). Horizontal wells with multi-stage fracture stimulation programs may enable the economic extraction of hydrocarbons from this interval. There are no satisfactory well ties for accurate correlation of stratigraphic units into the Wallal Graben. Due to the confined nature of the depositional environment, it is postulated that the source rocks within the Wallal Graben may be richer than those deposited in the other areas of the Canning Basin where increased oceanic circulation and less anoxic conditions prevailed. The Goldwyer Formation interpreted within the Wallal Graben is modelled to be thermally mature for hydrocarbon generation and is favourably located within the oil/condensate maturity window.
Operator:
Oilex Ltd: Operator with 100% interest