Concurrent 1. Presentation for: Reservoir quality and diagenesis of the West Erregulla field, North Perth Basin, Western Australia
Matthew Wright A *A Strike Energy Limited, West Perth, WA, Australia.
The APPEA Journal 62 - https://doi.org/10.1071/AJ21302
Published: 3 June 2022
Abstract
Presented on Tuesday 17 May: Session 1
The West Erregulla field is the deepest onshore gas discovery in Australia today, with three wells drilled to more than 5000 m vertical depth. The reservoir quality has been preserved at depth by clay coating, which shows a similar trend with core from other shallower fields in the northern Perth Basin such as Waitsia and Beharra Springs Deep. The primary reservoir in the West Erregulla field is the Permian Kingia Sandstone that was deposited in a tidal estuary environment, which allowed for mixing of meteoric and saline waters. This depositional setting has been inferred from core, image logs and seismic interpretation. This setting resulted in quartz grains coated in chlorite/illite that has limited quartz overgrowth cements and maintained intergranular porosity. This paper presents Strike’s interpretations of the depositional environment that resulted in the anomalous depth–porosity trend based on core analysis, high-resolution borehole image log interpretation and cuttings.
To access the presentation click the link on the right. To read the full paper click here
Keywords: anomalous porosity, Beharra Springs Deep, clay coating, Kingia Sandstone, north Perth Basin, Permian, Strike Energy, Waitsia, West Erregulla.
Matthew Wright has over 15 years of oil and gas experience and graduated from Curtin University (Perth) with a B.Sc. in Geology. He spent the first 12 years of his career working with Baker Hughes supporting Australia and Asia Pacific operations as a log analyst and geosteering supervisor while being involved in advancements in both LWD and mudlogging technology. Matthew joined Strike Energy in early 2020 as a Senior Geoscientist just prior to the start of the West Erregulla appraisal campaign and is responsible for operations and formation evaluation. |
