Transocean钻井平台驶入奥特威盆地进行多井天然气勘探活动

2025年4月12日
Transocean Equinox 半潜式钻井平台已抵达澳大利亚东南部近海的奥特威盆地,领先于多方合作伙伴奥特威勘探钻井计划。

Transocean  Equinox半潜式钻井平台已抵达澳大利亚东南部近海的奥特威盆地,领先于多方合作伙伴的奥特威勘探钻井计划 (OEDP)。

根据 3D Energi 4 月 10 日发布的新闻稿,该钻井平台已与由康菲石油澳大利亚公司牵头的四家运营商组成的财团签订了至少 16 口井的钻探合同。

目前,合资公司预计 OEDP 第一阶段钻探活动将于 2025 年第三季度开始,具体时间取决于是否获得监管部门的批准以及是否出现任何运营延误,例如天气停工。

初步计划包括维多利亚州和塔斯马尼亚州近海VIC/P79和T/49P勘探许可证,在水深53米至200米范围内钻探最多六口勘探井。今年已签订了第一阶段的两口确定井合同,第二阶段(2026-2028年)将签订最多四口可选井合同。

在监管机构接受钻井环境计划后,海底调查将于本月在 VIC/P79 上进行,并在海洋条件允许的情况下持续约四周。

最终确定油井位置将在完成两份许可证的地下三维地震解释研究后进行。

为获得 NOPSEMA 的油井作业和安全批准而进行的准备工作也在继续,其中包括提交和审查油井作业管理计划以及安全案例修订。

该钻探计划的目标是发现可以供应澳大利亚东海岸市场的商业天然气资源,以确保持续发电、工业生产和住宅供暖。

3D Energi 表示,随着巴斯海峡天然气田产量下降,加上东海岸持续的能源危机,此次活动对于维持维多利亚州及更广泛地区的天然气供应至关重要,预计从 2029 年开始澳大利亚南部将出现结构性供应缺口。

勘探重点将放在奥特威盆地近海、靠近现有基础设施且具有直接碳氢化合物迹象的低风险天然气勘探区。

原文链接/Offshore_Mag

Transocean rig sails in for multi-well Otway Basin gas campaign

April 12, 2025
The Transocean Equinox semisub has arrived in the Otway Basin offshore southeast Australia, ahead of the multi-partner Otway Exploration Drilling Program.

The Transocean Equinox semisubmersible drilling rig has arrived in the Otway Basin offshore southeast Australia, ahead of the multi-partner Otway Exploration Drilling Program (OEDP).

According to 3D Energi's April 10 news release, the rig is contracted for a minimum 16-well drilling campaign for a consortium of four operators, led by ConocoPhillips Australia.

Currently, the co-venturers expect the OEDP Phase 1 drilling campaign to start in third-quarter 2025, depending on receipt of regulatory approvals and any operational delays, such as weather downtime.

The initial planned program comprises up to six exploration wells in water depths ranging from 53 m to 200 m across the VIC/P79 and T/49P exploration permits offshore Victoria and Tasmania. Two firm wells have been contracted for Phase 1 this year, followed by up to four optional wells in Phase 2 (2026-2028).

Following acceptance of the drilling environment plan by the regulator, seabed surveys should get underway this month over VIC/P79 and continue for about four weeks, ocean conditions permitting.

Final determination of the well locations will follow completion of subsurface 3D seismic interpretation studies across both permits.

Preparations also continue for securing well operations and safety approvals from NOPSEMA, which involves the submission and review of a well operations management plan and the safety case revision.

The goal of the drilling program is to discover commercial gas volumes that could supply Australia’s East Coast market to ensure continued power generation, industrial processes and residential heating.

As production from the Bass Strait gas fields declines, combined with the ongoing East Coast energy crisis, 3D Energi said the campaign could be critical to maintaining gas supplies to Victoria and the broader region, with structural supply gaps expected from 2029 in southern Australia.

The exploration focus will be on low-risk gas prospects with direct hydrocarbon indications in the offshore Otway Basin, with proximity to existing infrastructure.