July 2015
Arrow 08/07/2015 July Technical Luncheon - Technologies That Have Transformed the Exmouth into Australia's Premier Oil Producing Basin

Abstract

The oil and gas fields of the Exmouth Sub-basin, offshore WA, have presented a number of significant challenges to their exploitation since the first discoveries of heavy oil and lean gas were made in the late 1980s and early 1990s. Presently, some 20 oil and gas fields have been discovered in a variety of Late Jurassic to Cretaceous clastic reservoirs from slope turbidites to deltaic sands. Discovered oils are typically heavily biodegraded with densities ranging from 14–23° API and moderate viscosity. Seismic imaging is challenging across some areas due to pervasive multiples and gas escape features, while in other areas resolution is excellent. Most reservoirs are poorly cemented to unconsolidated and thus require sand control. Modest oil columns, most with gas caps, and variable permeability, present challenges for both maximising oil recovery and minimising the influx of water and gas. Oil-water emulsions also present difficulties for both maximising oil rate and metering production.

To date, more than 300 MMbbls have been produced from five developments (Enfield, Stybarrow, Vincent, Van Gogh and Pyrenees), and in 2013 the Macedon gasfield began production. This presentation focuses on the variety of technologies—geoscience, reservoir, drilling and production—that have underpinned the development of these challenging fields and in doing so, transformed the Exmouth into Australia’s premier oil producing basin.  The accompanying paper was prepared for the 2015 APPEA Conference and was a joint winner of the Alan Prince Award for the Best Peer-Reviewed Paper. 

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Arrow 30/07/2015 SPE Lectures Series- July Lecture: Introduction to Subsea Production Systems

With the increase in offshore deep water discoveries the architecture of subsea field developments and therefore the subsea production systems are changing rapidly. Subsea technology provides a means to technically and economically produce remote and/or deep water reserves by placing subsea equipment i.e. Wellhead, Tree system, Manifold etc. on the sea bed. The subsea production system can range in complexity from a single satellite well with a flowline linked to a fixed/floating platform, to several wells on a template or clustered around a manifold that transfers oil and gas to a fixed or floating facility or directly to onshore facilities.

 

August 2015
Arrow 22/08/2015 SPE WA Annual Fundraising Ball