Geology and hydrocarbon prospectivity of the deepwater Otway and Sorell basins, offshore southeastern Australia

As part of the Offshore Energy Security Program (2007-2011), Geoscience Australia (GA) undertook an integrated regional study of the deepwater Otway and Sorell basins to improve the understanding of the geology and petroleum prospectivity of the region. Major outputs of this study include:

- New interpretations of basement architecture and structural fabric resulting in the recognition of the Avoca-Sorell Fault System as a major control on sedimentary basin development,
- Extension of the tectonostratigraphic framework of Krassay et. al. (2004) into the deepwater Otway and Sorell basins, leading to new insights into their structural and accommodation histories of both basins, and
- Petroleum systems modelling indicating that these basins are mature for oil and gas generation.

作为2007—2011年海上能源安全计划（Offshore Energy Security Program）的组成部分，澳大利亚地球科学局（Geoscience Australia, GA）针对深水奥特韦盆地与索雷尔盆地开展了综合区域研究，旨在深化对该区域地质特征与油气勘探潜力的认知。本研究的主要产出包括：
- 完成基底构造架构与构造组构的全新解译，识别出阿沃卡-索雷尔断裂体系（Avoca-Sorell Fault System）是控制沉积盆地发育的核心构造因素；
- 将Krassay等学者2004年提出的构造地层框架（tectonostratigraphic framework）拓展至深水奥特韦盆地与索雷尔盆地，为两个盆地的构造演化与可容纳空间演化历史带来全新见解；
- 油气系统模拟（petroleum systems modelling）结果证实，上述两个盆地均已达到油气生成的成熟阶段。