由 LLOG 运营的 Seadrill West Neptune 钻井船于 2024 年 9 月 5 日启动位于美国墨西哥湾近海的 Who Dat South 勘探井 MC 545-1（LLOG）。

Who Dat South 位于 Who Dat 浮式生产系统 (FPS) 以西约 11 公里处，水深约 780 米。该井将测试两个振幅支撑的中新世浊积岩储层前景，较浅的目标类似于 Who Dat 油田内的生产区。

该井将采用斜井钻探，总测量深度约为 7,500 米，预计钻探和评估需要 50-60 天。该井位于 Who Dat G 海底歧管（6 公里）和 Who Dat FPS（11 公里）的回接距离内。

独立专家 Netherland Sewell and Associates 此前曾估计，Who
Dat South 勘探区包含 3100 万桶油当量（BOE）的无风险 2U 勘探资源，相当于 Karoon 的净收入权益净额 760 万桶油当量。地质成功概率评估为 52%。

The Seadrill West Neptune drillship, operated by LLOG, spudded the Who Dat South exploration well, MC 545-1 (LLOG), located offshore in the US Gulf of Mexico on 5 September 2024.

Who Dat South lies approximately 11 km west of the Who Dat Floating Production System (FPS), in a water depth of approximately 780 m. The well will test two amplitude-supported Miocene turbidite reservoir prospects, with the shallower target analogous to productive zones within the Who Dat fields.

The well will be drilled as a deviated hole with a total measured depth of approximately 7,500 m and is expected to take 50-60 days to drill and evaluate. The well lies within tie-back distance to both the Who Dat G subsea manifold (6 km) and the Who Dat FPS (11 km).

Independent expert Netherland Sewell and Associates has previously estimated that the Who
Dat South prospect contains 31 million barrels of oil equivalent (BOE) of gross unrisked Prospective 2U Resources, equivalent to 7.6 million BOE net to Karoon on a Net Revenue Interest basis. The geological probability of success is assessed at 52 percent.