澳大利亚奥特韦盆地发现新气田

原标题：澳大利亚奥特韦盆地发现新气田

中国石化新闻网讯 据油田技术1月15日报道，奥特韦盆地合资企业（合资企业）的运营商奥特韦能源有限公司（Otway Energy Pty Ltd）表示，Nangwarry-1井的钻探已导致新的气田气发现，目前正在对该井进行进一步评估和测试。该井于2019年12月31日钻至深度为4300 m。

这是过去两年来，该地区连续第三次发现。随着Nangwarry-1、Haselgrove-3 ST1（Beach Energy Ltd）和Donbey-1 DW1（Beach/Cooper Energy Ltd）的发现，Penola海槽正在恢复活力。这些油井证明了南澳大利亚陆上奥特韦盆地这一部分的潜力，以及Vintage在维多利亚州拥有的更大的许可区。

目前，通过测井分析、压力数据和气体取样，在Pretty的山丘砂岩顶部确认了至少65m的总气柱。由于井下条件具有挑战性，获得的测井数据质量不足以解决中景山砂岩中存在的碳氢化合物。然而，在这一段钻井过程中遇到的天然气，给了大家继续探测的鼓励。

因此，运营商建议在套管就位后对该砂岩进行评估。一旦合资公司同意，Vintage将更新市场计划，进一步定义和生产测试储层段。

洪伟立 摘译自 油田技术

原文如下：

Gas discovery made in Australia's Otway Basin

The operator of the Otway Basin joint venture (JV), Otway Energy Pty Ltd, has advised that the drilling of the Nangwarry-1 well has resulted in a new field gas discovery, with the well currently being cased for further evaluation and testing. The well was drilled to total depth at a measured depth of 4300 m in the Pretty Hill Formation on 31 December 2019.

This is the third successive discovery within this region over the past two years. A reinvigoration of the Penola Trough is underway with discoveries now at Nangwarry-1, Haselgrove-3 ST1 (Beach Energy Ltd) and Dombey-1 DW1 (Beach/Cooper Energy Ltd). These wells vindicate the potential of this part of the onshore Otway Basin, both in South Australia as well as the larger licence area held by Vintage in Victoria.

A gross gas column of at least 65 m has now been confirmed in the top of the Pretty Hill Sandstone by log analysis, pressure data and gas sampling. Because of challenging down-hole conditions, log data obtained beneath this zone is of insufficient quality to resolve the presence of hydrocarbons in the mid-Pretty Hill Sandstone. Gas shows encountered during drilling of this section, however, have provided encouragement.

Accordingly, the operator has advised that evaluation of this sandstone will take place after casing is in place. Vintage will update the market with plans to further define and production test the reservoir sections once these have been agreed by the JV.