Publication Name: The Sedimentary Basins of WA
Authors: K.E. Jonasson & R.F. Reiser
Publication Volume: 3
Date Published: December 2002
Number of Pages: 30
Reference Type: Book Section
Abstract:
The Blina Oil Field, a Famennian carbonate reefal structure situated on the Lennard Shelf in the onshore Canning Basin, was discovered in 1981 by Home Oil Australia. Blina 1 intersected a 58 m oil column in the Late Devonian Nullara Limestone and 50--60 m of possible oil saturation (currendy considered 9 m gross) in the Early Carboniferous Yellow Drum Formation. Oil production commenced in October 1983. Currendy, three wells are producing. Future plans for the Blina Oil Field include recompletions to access considerable bypassed oil. The development of vugs in the carbonate reservoirs has resulted in excellent porosity, and oil migration is believed to have occurred either simultaneously with the development of this secondary porosity, or shordy thereafter. Fracturing of the Nullara Limestone during the Mid-Late Carboniferous Meda Movement resulted in increased vertical permeability. Several major plays involving the Frasnian reef complex, over which the Nullara Limestone is draped, are yet to be fully tested. These include the main reef, fore-reef section, and sub-reef unconformity play. There is also an untested deep gas playsin the Ordovician section.